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Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1): 37–51
DOI: 10.17581/bp.2021.10106
37
©Botanical Garden-Instute FEB RAS. 2021
ABSTRACT
Syntaxonomic diversity of the vegetation in the southern tundra subzone of the
Tazovsky Peninsula is represented by six associations, three subassociations and
three variants. Four associations (Dicrano maji–Salicetum lanatae Khitun ass. nov. hoc
loco, Sphagno girgensohnii–Betuletum nanae Khitun ass. nov. hoc loco, Empetro subhol-
arctici–Eriophoretum vaginati Khitun ass. nov. hoc loco, Eriophoro leiocarpi–Caricetum
rotundatae Khitun ass. nov. hoc loco), the three subassociations (Hierochloo alpinae–
Hylocomietum splendentis empetretosum subholarctici Khitun subass. nov. hoc loco, Eri-
ophoro leiocarpi–Caricetum rotundatae typicum Khitun subass. nov. hoc loco, Eriophoro
leiocarpi–Caricetum rotundatae caricetosum chordorrhizae Khitun subass. nov. hoc loco)
and the three variants are described for the rst time. A high degree of similarity
was found between vegetation of the Tazovsky Peninsula and vegetation of the
southern part of the Gydansky Peninsula (the typical tundra subzone). They have
four of six associations in common, whereas with the northern part of the typical
tundra there is only one association in common.
Keywords: the Arctic, the Tazovsky Peninsula, tundra, mires, vegetation classica-
tion, syntaxonomy
РЕЗЮМЕ
Телятников М.Ю., Хитун О.В., Чернядьева О.В., Кузьмина Е.Ю., Ер
мо хи на К.А. К синтаксономическому разнообразию Тазовского полу
ост рова, российская Арктика. Cинтаксономическое разнообразие юж
ных тундр северовосточной части Тазовского полуострова представлено
6 ассоциациями, 3 субассоциациями и 3 вариантами, из которых 4 ассоциа-
ции (Dicrano maji–Salicetum lanatae Khitun ass. nov. hoc loco, Sphagno girgensohnii–
Betuletum nanae Khitun ass. nov. hoc loco, Empetro subholarctici–Eriophoretum vaginati
Khitun ass. nov. hoc loco, Eriophoro leiocarpi–Caricetum rotundatae Khitun ass. nov.
hoc loco), 3 субассоциации (Hierochloo alpinae–Hylocomietum splendentis empetretosum
subholarctici Khitun subass. nov. hoc loco, Eriophoro leiocarpi–Caricetum rotundatae
typicum Khitun subass. nov. hoc loco, Eriophoro leiocarpi–Caricetum rotundatae
caricetosum chordorrhizae Khitun subass. nov. hoc loco) и 3 варианта описаны
впервые. Выявлено высокое сходство растительности района исследований
с растительностью южой части типичных тундр Гыданского полуострова (4
из 6 описанных ассоциаций общие) и низкое сходство с растительностью
северной части типичных тундр того же полуострова (общей является всего
1 ассоциация).
Ключевые слова: Арктика, Тазовский полуостров, тундры, болота, классификация
растительности, синтаксономия
Michael Yu. Telyatnikov 1*
e-mail: arct-alp@mail.ru
Olga V. Khitun 2
e-mail: khitun-olga@yandex.ru
Irina V. Czernyadjeva 2
e-mail: irinamosses@yandex.ru
Ekaterina Yu. Kuzmina 2
e-mail: ekuzmina@yandex.ru
Ksenia A. Ermokhina 3
e-mail: diankina@gmail.com
1 Central Siberian Botanical Garden SB
RAS, Novosibirsk, Russia
2 Komarov Botanical Institute RAS,
St. Petersburg, Russia
3 A.N. Severtsov Institute of Ecology and
Evolution RAS, Moscow, Russia
* corresponding author
Manuscript received: 07.12.2020
Review completed: 04.03.2021
Accepted for publication: 20.03.2021
Published online: 24.03.2021
Michael Yu. Telyatnikov1*, Olga V. Khitun2, Irina V. Czernyadjeva2,
Ekaterina Yu. Kuzmina2 & Ksenia A. Ermokhina3
A contribution to the syntaxonomic
diversity of the Tazovsky Peninsula,
Arctic Russia
There have been a limited number of vegetation studies
on the Tazovsky Peninsula. The rst such surveys date back
to Go vorukhin’s (1933) inventory of reindeer summer pas
tures and Nikolaeva’s (1941) description of shrub vege ta
tion, both based on dominant approach methodology. An
im portant contribution to the study of the regional vege ta-
tion was the creation of the map “Vegetation of the West
Si berian Plain” (Il'ina1976) followed by the legend issued as
a se pa rate book (Il'ina et al. 1985). However, this book and
the map provide only general information, also based on
do mi nant approach. Since 1986, a few studies of zonal dif-
fe ren tiation of the plant cover, focused primarily on ora,
were carried out on the Tazovsky and Gydansky Peninsulas
(e.g., Rebristaya et al. 1989, Khitun 1989, 1998, 2005). The
latest research in the area was mainly devoted to the anth-
ro po genic transformation of vegetation, which follows the
local gas-oil industry development (e.g., Valeyeva & Mos-
kov chenko 2008, Moskovchenko et al. 2016, 2017).
Our study is the rst application of the oristicsocio lo
gical (BraunBlanquet) approach to the classication of ve
ge tation of the Tazovsky Peninsula. It is also our contri bu-
tion to the Arctic Vegetation Archive international project
(Walker et al. 2018; https://avarus.space).
The aim of our study is to classify southern tundra sub-
zone vegetation and identify syntaxonomic diversity in the
north west of the Tazovsky Peninsula.
Study area
Geology and topography. The Tazovsky Peninsula, as
well as the Gydansky Peninsula, lies in the north of the West
Si be rian Plain. The terrain is formed by the 200 to 250 m
thick layer of negrained Quaternary sedimentary de po
38 Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Telyatnikov et al.
sits. The geomorphology reects the Pleistocene – Ho lo
cene marine transgressions and regressions. Overall, ve
geo mor phological levels (terraces) are distinguished in the
West Siberian Arctic. At the study site, the 3rd marine ter race
with an elevation 30 to 45 m above sea level (a.s.l.) is present
(Ogo rodnov et al. 1971). The topography is represented by
at gently rolling watershed hills dissected by water tracks
and meandering streams. Lakes and wetlands are numerous
both in riverine valleys and on poorly drained areas of lower
water shed hills. The region lies entirely within the zone of
con tinuous permafrost and therefore the area shows many
cryo genic features, such as nonsorted circles and earth
hum mocks, ice-wedge polygons, high-centered poly gonal
tun dra-mire complexes, thermokarst lakes and drai ned
ther mokarst basins, locally called “khasyrei”. Deep ra vines
form at the edges of the terrace starting from the ice wedge
thaw. Sandy and loamy deposits predominate in the study
area. On the watersheds formed by sandy deposits, areas
of ero ded sand lacking vegetation (sometimes rather exten-
ded) appear due to deation. A consequence of water log
ging of soils is accumulation of the thick peat horizons,
which is the most general characteristic of subarctic tundra
in West Siberia (Khitun 2005).
Climate. The area belongs to the arctic belt in the Re-
gion of the Atlantic inuence (Antonov et al. 1986). Cyc
lo nic circulation causes large diurnal amplitudes of air
tem pe ra ture, high frequency of strong winds and cloudy
sky, as well as re la tively intense precipitation (Simonov
1977). Accor ding to: https://weatherarchive.ru/Pogoda/
Yamburg (28.06.2020) mean annual air temperature in
Yam burg (the clo sest station to the study site, see Fig. 1) for
the pe riod from 2014 to 2019 is 5.9°C. The mean July tem
pe ra ture is +13.1˚C; mean January temperature is 22.9°C.
Pre ci pi ta tion in this region is 330–380 mm, of which 75 %
falls du ring sum mer and autumn (Ogo rodnov et al. 1971).
Zonal position and general overview of vegetation.
The study area is located within the southern tundra sub-
zone (Gorodkov 1935, Chernov & Matveyeva 1997), which
is also called the southern hypoarctic tundra subzone (Yur-
tsev 1994) and it coincides with subzone E, or the low
shrub sub zone on the Circumpolar Arctic Vegetation Map
(CAVM Team 2003). In the system of geobotanical division
of the Arctic by Aleksandrova (1980), the subarctic tundra
is divided into three belts (in contrast to the mentioned
above schemes with only two subdivisions) and the study
area be longs to the southern belt of the subarctic tundra
sub zone, at its border with the middle belt. We compare
our associations with those distinguished previously on the
Gy dan sky Peninsula (Telyatnikov et al. 2019) in the typical
tundra subzone (Gorodkov 1935, Chernov & Matveyeva
1997). The latter is also called the northern hypoarctic tund-
ra (Yurtsev 1994) and it coincides with subzone D, or the
erect dwarf shrub subzone (CAVM Team 2003). According
to the system of Aleksandrova (1980) that study was carried
out in the northern belt of the subarctic tundra subzone.
Hereafter we use the abbreviations: STS, southern tundra
subzone; TTS, typical tundra subzone.
The characteristic feature of vegetation in the STS is
the pre do mi nance of low deciduous shrubs, primarily Betu-
la nana and to a lesser extent Salix glauca and S. lanata, in
zo nal communities on watershed hills. Erect dwarf shrubs
Vac cinium uliginosum subsp. microphyllum, V. vitis-idaea subsp.
minus, Ledum palustre subsp. decumbens are present and abun-
dant in the majority of communities except those that are
per manently waterlogged. Tall (up to 2.5 m) willow thi-
ckets (Salix lanata, S. glauca, S. phylicifolia) with herbaceous
un der story occupy the relatively steep slopes of hollows
and lake basins and riparian habitats. Lower (1–1.5 m) wil
low thickets with developed herb–moss understory usual ly
grow at the bottom of wider hollows. Alder (Alnus fruti co sa)
in the studied locality was found rarely, as solitary shrubs
on slopes. Oligotrophic hypoarctic and boreal spe cies
dominate in all types of vegetation in this subzone. Pro per
arctic species grow either in snowbeds (Ranunculus niva lis,
Salix polaris, S. arctica) or on the edges of exposed, wind-
blown hilltops (Armeria maritima, Hierochloë alpina, Salix num-
mu la ria, Pachypleurum alpinum).
Various variants of low- and dwarf-shrub dominated
tund ra with a well-developed lichen-moss ground layer
are wide spread on watershed hills with a better drainage.
Figure 1 Study sites (circled numbers): 1 – upper reaches of the
Verkh nyaya Yareiyakha River; 2 – Lake Parisento surroundings; 3 –
basin of the Tanama River middle reaches. Our eldwork revealed
that the boundaries of the TTS should be essentialy shifted north-
wards compare to their position in Yurtsev (1994): dashed lines
– borders as in Yurtsev (1994); dotted lines – borders according
to Khitun (2005), Telyatnikov et al. (2019) and Telyatnikov et al.
(in print)
39
Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Syntaxonomic diversity of the Tazovsky Peninsula, the Arctic
Dwarf birch-Sphagnum spp. communities with very dense
shrub layers populate the slope edges of low watershed
hills and lake terraces. Betula nana + Ledum palustre s. l. +
Erio pho rum vaginatum communities with thick moss mats
cover large atcentered polygons (30 to 40 cm high) in
the tund ra–mire complexes, which are common on the lo
wer water sheds with a poorer drainage. Sedge (Carex rotun-
da ta, Eriophorum angustifolium) – moss mires occur in the
troughs between the polygons. Sedge-moss mires domi-
na ted by Carex rotundata and C. chordorrhiza, cover the
bot toms of drained thermokarst basins, whereas Carex
con co lor dominated communities with or without a moss
layer occupy more saturated habitats, along water tracks
and streams. Psammophytic communities with abundant
grasses, herbs and dwarf shrubs grow on various eroded
steep sandy slopes.
MATERIAL AND METHODS
Sampling and data analysis
The study site is located approximately 35 km to the
north of Yamburg settlement, in the upper reaches of the
Verkh nyaya Yareiyakha River at 68°13'N 75°12'E (Fig. 1,
site 1). Olga Khitun conducted vegetation sampling between
27 July and 8 August 2017. Plots locations were subjectively
cho sen in areas of homogenous vegetation in visually dif fe-
rent communities along several transects established in the
area. Plot sizes varied from 25 to 100 m2. In total, 65 re le vés
were sampled, 37 of which are used in this paper. Bet ween
8 July and 7 August 2017, Olga Khitun carried out si mi lar
investigations at two sites in the southern part of the TTS
on the Gydansky Peninsula: in the surroundings of the Pa-
ri sen to Lake, 70°06'N 75°36'E (Fig. 1, site 2) and in the
basin of the Tanama River middle reaches, 69°56'N 78°50'E
(Fig. 1, site 3). At those sites, 215 relevés were sampled, 75
of them are used in another publication (Telyatnikov et al.
in press). However, initially all relevés were analysed to ge-
ther in MegaTab (see below), and 19 relevés from the Gy-
dan sky Peninsula are considered here because they belong
to synataxa common for both subzones.
We use the modied BraunBlanquet coverabundance
scale (Mirkin & Naumova 1998) to score the cover of each
spe cies: 1 < 1 %; 2 = 1–5 %; 3 = 6–10 %; 4 = 11–25 %; 5 =
26–50 %; 6 = 51–75 %; 7 = 76–100 %. At each relevé, we
re cor ded the complete species composition (including mos-
ses and lichens) and cover-abundance scores for each spe-
cies. The percentage cover of major plant growth forms was
vi sually estimated. Canopy height, thickness of moss layer
and depth of soil organic horizons were measured with a
ruler. Soil texture was estimated according to Bogolubov et
al. (2001) after digging small soil pits. Coordinates and alti-
tude of plots were taken with Garmin eTrex 10.
We classied the vegetation according to the Braun
Blan quet sorted-table method (Westhoff & van der Maarel
1978). The relevés were entered in the TURBOVEG data-
base (Hennekens & Schaminée 2001), thereafter a sorted
table was derived in the MegaTab program (Hennekens
1996) and a dichotomous hierarchy of groups of relevés
was con structed using the TWINSPAN program (Hill 1979)
and transformed by M.Yu. Telyatnikov into a hierarchy of
syn taxa. At this stage, we identied diagnostic (character),
dif fe rential and constant species; we discarded transitional,
between syntaxa, relevés.
Nomenclature
The nomenclature of the described syntaxa is in accor-
dance with the International Code of Phytosociological
No menclature (Theurillat et al. 2021). Diagnostic species
of the class Loiseleurio procumbentis–Vaccinietea Eggler ex
Schu bert 1960, are given in accordance with “Vegetation
of Europe…″ (Mucina et al. 2016) and the paper of
Erma kov (2012). Diagnostic species of the class Oxycocco-
Sphagnetea Br.Bl. et Tx. ex Westhoff et al. 1946 are cited
after Lavri nen ko & Lavrinenko (2015) and also ″Vegetation
of Europe…″ (Mucina et al. 2016) and of the class
Scheuchzerio–Cari cetea nigrae (Nordh. 1936) Tx. 1937 – after
Lavrinenko et al. (2016).
The nomenclature of the species followed Sekretareva
(2004) for vascular plants, Ignatov et al. (2006) for mosses, ,
Potemkin & Sofronova (2009) for liverworts and Esslinger
(2016) for lichens.
The synoptic table presents syntaxa with their constancy
class in each community: + = present in 1 to 10 % of re
cords; I = 11–20 %; II = 21–40 %; III = 41–60 %; IV =
61–80 %; V = 81–100 %.
In the description of nomenclatural type relevés (holo-
types), to avoid the repetition of headings and long names of
localities throughout this paper we write in the following order:
1) relevé number in the table and, in parentheses, in the da-
ta base, for example, 3(276);
2) table No (T1 for Table 1 or T2 for Table 2);
3) region is YamalNenets Autonomous Area (YaNAA);
4) locality is indicated by number as in Figure 1 (1, Verkh
nyayaYareiyakha; 2, Parisento; 3, Tanama);
5) coordinates (latitude, N and longitude, E);
6) elevation, m above sea level (a.s.l.);
7) plot surface area (m2, most commonly it was 100 m2).
This is followed by the information about habitat (topo-
gra phy, soil, cover of growth forms); date of observation
(ddmmyyyy); author; and, nally, list of species in the typus
relevé with cover abundance scores.
RESULTS
Dwarf shrub tundra in relatively dry
wind-exposed habitats
We placed tundra communities of relatively dry habitats
in the class Loiseleurio procumbentis–Vaccinietea Eggler ex
Schu bert 1960, order Deschampsio exuosae–Vaccinietalia myr
ti lli Dahl 1957 and alliance Loiseleurio–Arctostaphylion Kalli o la
ex Nordhagen 1943.
The Loiseleurio procumbentis–Vaccinietea includes dwarf
shrub ve ge tation on dry acidic ha bitats with thin snow cover
in al pine and arctic regions of the northern hemisphere.
Diag nostic species of the class are: Alectoria ochroleuca, Aula-
com nium turgidum, Betula na na, Cladonia bellidifolia, C. stel la ris,
Di phasiastrum alpinum, Flavo cet ra ria cucullata, F. nivalis, Hie ro chloё
alpina, Huperzia arc ti ca, Lycopodium annotinum subsp. pun gens,
L. clavatum subsp. monostachyon, Ochrolechia fri gi da, Pedi cu la ris
40 Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Telyatnikov et al.
lapponica, Stereo cau lon paschale, Sphaerophorus glo bo sus, Vac cinium
vitis-idaea subsp. minus, V. uliginosum subsp. microphyllum.
The Deschampsio exuosae–Vaccinietalia myrtilli includes
dwarf shrub or low shrub dominated tund ra vegetation of
the Arctic and mountain tundra of the nor thern Eurasia
and the islands and archipelagos of the Arctic Ocean. Diag
nos tic species of the order are: Betula nana, Carex arctisibirica.
The Loiseleurio–Arctostaphylion includes mountain and
low land tundra of northern Eurasia, Svalbard, Island and
Green land. Diagnostic species of the alliance are Alectoria
ochroleuca and Flavocetraria nivalis. Within this alliance, we
place two variants and one subassociation of the association
described earlier.
Hierochloo alpinae–Hylocomietum splendentis (Table 1,
rel. 1–14; Table 3)
Diagnostic species: Hierochloё alpina, Polytrichum hyper bo-
reum, Alectoria ochroleuca;
Differential species: Festuca ovina, Luzula confusa, Salix
num mularia, Bryocaulon divergens, Flavocetraria nivalis, Bryoria
nitidula, Racomitrium lanuginosum.
Distribution and ecology. This association is described
from the nor thern part of the TTS on the Gydansky Pe nin-
sula (Telyat ni kov et al. 2019). These communities occupy dry,
often slightly convex, marginal parts of the hilltops and ad ja-
cent upper parts of slopes with shallow snow accu mu lation.
Structure and composition. Such communities in Russian
li terature are commonly called “spotted” tundra because
they have comp lex horizontal structure including small
pat ches of bare ground surrounded by vegetated rims and
small troughs. Communities have a sparse upper layer (up to
20 cm high) of grass straw and closed ground layer for med
by prost rate dwarf shrubs and cryptogams. The cover va lues
vary bet ween 25 and 55 % of dwarf shrubs, 20 to 60 % of
li chens and 30 to 70 % of mosses (Telyatnikov et al. 2019).
Hierochloo alpinae–Hylocomietum splendentis empet re-
to sum subholarctici subass. nov. hoc loco (Table 1, rel.
1–14; Table. 3, Fig. 2A)
Differential species: Empetrum subholarcticum, Arctous alpi-
na, Calamagrostis neglecta.
Holotypus: 3 (276); T1; YaNAA; 1; 68°12′25.8″N 75°13′25.5″E;
47; 100.
Relevé. Well-drained marginal part of the hilltop with ex-
pres sed po ly gonal cracks; dry nonsorted circles and small
earth hum mocks are almost completely overgrown with
vegetation. In cli nation 2°. Aspect 202°. Soil: the dark
brown peaty hu mus organic horizon is 1–2 cm thick and
the mineral ho rizon is light yellowish-brown with a sandy
tex ture. The cover of lichens is 70 %, of mosses 30 %,
shrubs 15 %, dwarfshrubs 10 %, herbs 15 %. 04.08.2017.
O.V. Khitun.
List of species: Alectoria ochroleuca 5, Polytrichum hyperboreum
4, Bryo caulon divergens 4, Betula nana 4, Cladonia stygia 3, Ca la-
ma g ros tis neglecta 3, Carex arctisibirica 3, Dicranum elongatum 3,
Po lytrichum juniperinum 3, Alectoria nigricans 2, Bryoria nitidula 2,
Cladonia gracilis s. l. 2, Cetraria islandica 2, Flavocetraria cucullata
2, Hierochloё alpina 2, Ochrolechia frigida 2, Pogonatum dentatum
2, Salix glauca 2, Vaccinium uliginosum subsp. microphyllum 2,
Arctous alpina 1, Aulacomnium turgidum 1, Bistorta elliptica 1,
B. vivipara 1, Cladonia arbuscula 1, C. chlorophaea 1, C. cornuta
1, C. pleurota 1, Cetraria laevigata 1, C. aculeata 1, Eriophorum
vaginatum 1, Empetrum subholarcticum 2, Festuca ovina 2,
Flavocetraria nivalis 1, Gymnomitrion coralloides 1, Sphenolobus
minutus 1, Ledum palustre subsp. decumbens 2, Luzula confusa 1,
Pedicularis labradorica 1, Pertusaria panyrga 1, Pleurozium schreberi
1, Poa alpigena 1, Pohlia sp. 1, Salix nummularia 1, S. pulchra 1,
Vaccinium vitis-idaea subsp. minus 1.
Distribution and ecology. The communities of the
subass. empetretosum subholarctici occur in the STS on the Ta-
zov sky Peninsula and in the sou thern part of the TTS on
the Gy dansky peninsula. They occupy well-drained parts of
wa ter sheds such as the edges of hilltops, the upper parts
of hill slopes and river ter races; at altitudes varying bet-
ween 24 and 57 m a.s.l. Com pared to the association, in
sub association the cover of shrubs and lichens is higher,
and the cover of herbs, dwarf shrubs and mosses is lower.
The subassociation splits into two variants.
Variant typicum (Table 1, rel. 1–6; Table 3; Fig. 2A)
Differential species are the same as for the subassociation.
Distribution and ecology. These communities occur in
the STS on the Ta zov sky Peninsula on well-drained parts
of watersheds and upper parts of their slopes with an in-
cli nation of 1 to 15° and within an altitude range of 43 to
57 m. The micro to po gra phy is polygonal with at polygons
15 to 20 m in dia me ter divided by cracks of ap pro xi mately
0.5 m in width. The or ga nic horizons range in thick ness
from 2 to 3 cm and con sist of dark brown mucky peat; the
un derlying mineral ground is yellow sand or sandy loam.
Structure and composition. These communities have two
ver ti cal strata. Low shrubs, pre do mi nant ly dwarf birch, (15
to 25 %, rarely 5 %) and herbs, pre do mi nant ly Calamagrostis
neg lec ta and Carex arctisibi ri ca, (10 to 25 %) form a sparse
even ly dis tri buted overstory, usual ly 10 to 15 cm height.
The dwarf shrub–cryptogam un der story is closed, with li
chens cover of 70 to 90 % that serves as a back ground for
mos ses (up to 35 %) and se pa rate patches (5 to 10 %) of
prost rately growing in this con di tions dwarf shrubs such as
Le dum palustre subsp. de cum bens, Vaccinium uliginosum subsp.
mic rophyllum, V. vitis-idaea subsp. mi nus. Alectoria ochroleuca
and Cladonia stygia are the most abun dant among the lichens,
and Polytrichum hyperboreum and Dic ra num elongatum are pre do-
mi nant among the mosses.
Variant Aconogonon ochreatum (Table 1, rel. 7–14; Tabl. 3;
Fig. 2B)
Differential species: Tanacetum bi pin na tum, Aconogonon och-
rea tum, Ca rex quasivaginata, Campanula ro tun di folia.
Distribution and ecology. These phyto coe no ses occur in
the southern part of the TTS on the Gydansky Pe ninsula
and in the STS on the Tazovsky Peninsula. They occupy
windswept mar gi nal parts of watershed hills and the up per
Figure 2 Photographs of the described plant communities on the Tazovsky Peninsula. A – Hierochloo alpinae–Hylocomietum splendentis subass.
em pet retosum subholarctici var. typicum on welldrained part of the watershed hill; B – Hierochloo alpinae–Hylocomietum splendentis subass. empetretosum
subholarctici var. Aconogonon ochreatum on the gentle convex slope of the watershed hill; C – Dicrano maji–Salicetum lanatae on the bottom of the
hol low at the watershed hillslope; D – Sphagno girgensohnii–Betuletum nanae on the lake terrace; E – Empetro subholarctici–Eriophoretum vaginati on
the polygons in tundra–mire complex on the at low watershed; F – Eriophoro leiocarpi–Caricetum rotundatae subass. typicum in the wet trough bet-
ween polygons of tundra–mire complex; G – Eriophoro leiocarpi–Caricetum rotundatae subass. caricetosum chordorrhizae on the bottom of the drai-
ned lakebed; H – Carici stantis–Warnstoretum exannulatae var. War nstora sarmentosa on the bottom of the wet hollow in the watershed hill slope
41
Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Syntaxonomic diversity of the Tazovsky Peninsula, the Arctic
42 Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Telyatnikov et al.
Table 1. Associations Hierochloo alpinae–Hylocomietum splendentis (var. typicum – A, and var. Aconogonon ochreatum – B), Dicrano maji–
Salicetum lanatae (C), Sphagno girgensohnii–Betuletum nanae (D) and Empetro subholarctici–Eriophoretum vaginati (E)
SYNTAXON CODE A B C D E A B C D E
Locality
T
T
T
T
T
T
G1
G2
G2
G2
T
Т
T
T
G2
G2
G2
T
T
T
T
Т
Т
Т
Т
Т
Т
Т
Т
Т
Т
Cover total, %:
90
95
90
90
100
95
60
95
95
80
60
95
60
95
95
100
100
100
100
100
100
100
95
100
100
100
100
100
100
100
100
Cover shrubs, %
25
20
15
25
20
5
5
10
1
5
5
25
1
10
50
50
60
20
50
70
80
80
5
5
5
5
5
5
15
Cover dwarf shrubs, %
5
10
10
10
5
10
20
35
5
20
10
20
35
10
5
10
15
10
10
5
10
10
30
20
25
30
20
25
20
15
25
Cover lichens, %
70
70
70
70
80
90
20
40
50
40
30
70
20
80
1
1
2
50
5
40
20
20
30
90
90
50
90
80
50
80
20
Cover mosses,%
35
15
35
10
35
5
10
35
30
30
5
5
15
5
90
65
40
45
90
90
100
100
90
70
40
40
65
70
90
40
70
Cover herbs, %
25
15
15
15
20
10
15
20
20
25
10
20
15
10
70
50
50
30
20
20
25
35
40
15
15
65
30
30
35
60
70
Height shrubs (cm)
5
15
10
60
10
5
5
3
15
5
2
25
50
10
60
120
100
70
160
40
35
80
10
15
15
15
15
8
15
15
20
Aspect (°)
360
135
202
202
270
157
-
112
292
90
202
202
338
315
135
315
45
292
292
180
225
360
135
-
338
225
22
-
90
90
-
Inclination of slope (°)
1
1
2
15
2
5
0
2
5
28
25
8
35
3
5
5
20
1
1
5
1
3
1
0
1
2
1
0
1
1
0
Altitude ( m a.s.l.)
53
57
47
44
47
43
38
24
25
30
39
37
39
34
26
34
9
36
35
49
55
51
49
47
50
49
47
43
48
51
52
Total number of species
30
27
44
32
42
27
26
52
40
52
30
26
51
29
36
38
63
41
35
26
30
23
28
23
24
26
22
28
19
25
35
Number of vascular plants species
9
10
19
17
15
12
20
29
26
28
18
15
26
16
18
23
46
28
23
13
11
12
7
8
11
8
9
10
7
7
9
Number of lichen species
13
13
17
11
17
11
2
14
9
17
9
8
18
11
5
4
5
5
4
4
11
5
15
10
9
13
7
9
7
15
18
Number of moss species
8
4
8
4
10
4
4
9
5
7
3
3
7
2
13
11
12
8
8
9
8
6
6
5
4
5
6
9
5
3
8
Relevé nr: in the database
233
235
276
277
290
294
39
110
123
134
278
279
283
286
153
186
216
281
282
246
257
258
234
241
244
245
248
242
251
254
255
In the table
1
2
3*
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18*
19
20
21*
22
23
24
25
26
27*
28
29
30
31
Number of relevés 6 8 6 39
Diagnostic species of Hierochloo alpinae–Hylocomietum splendentis
Hierochloё alpina (L-V) 3221· 131 · 1 2 2 2 1 · · · · · · · · · · · · · · · · · V 2 V 2 · · ·
Polytrichum hyperboreum 434331 · 3131 2 · · · · 1 · · · · · ········· V4IV 3I 1 · ·
Alectoria ochroleuca (LA, LV) 5 5 5 1 6 5 · · · · 2 · · 5 ········235 · 43343 V 5 II 4· · V 4
Differential species of Hierochloo alpinae–Hylocomietum splendentis
Festuca ovina 1 · 2 2 · 2 1 1 2 2 2 1 2 2 · · · 1 1 · 1 · · · · · · · · · · IV 2 V 2 II 1 II 1 ·
Luzula confusa · 1 1 1 1 1 · 1 1 1 1 1 · 1 · · 1 · · · · · · · · · · · · · · V 1 IV1 I 1 · ·
Salix nummularia · · 1 1 · 2 32 · 31 · 32·················III1 IV3···
Bryocaulon divergens 1 1 4·46 · · · 1 · · 1 6 · · · · · · · · 1 1 1 · · · · 1 1 V 4II 4· · III 1
Flavocetraria nivalis (LA, LV, RcDe) 1 · 1 1 1 2 · · · 3 3 ··1···········13· · 1 · V 1 II 3· · II 2
Bryoria nitidula · 1 3·11·······1················1IV2 I1 · · I1
Racomitrium lanuginosum (Sh) · · · · 3132 · · · · 1 · ················· II2 II2 · · ·
Differential species in subass. empetretosum subholarctici and var. typicum
Empetrum subholarcticum 22221213222242 · · · · 1 1111111111·1 V 2 V 3I 1 V 1 V 1
Arctous alpina 2 · 2 2 · 334·323 3 2 · · · · 1 ············IV2 V3I 1 · ·
Calamagrostis neglecta 4 3 3 · 2 · · · 2 · 1 31 1 · · 1 2 3222 · 1 · · 1 · · · · IV 3IV 2 III2 V 1 II 1
Differential species in var. Aconogonon ochreatum
Tanacetum bipinnatum · · · · · · 2 1 2 1 2 1 · 2 · 1 1 1 · · · · · · · · · · · · · · V 2 III 1 · ·
Aconogonon ochreatum · · · · · 1 1 2 2 · 2 2 2 1 · · · · · · · · · · · · · · · · · I 1 V 2 · · ·
Carex quasivaginata · · · · · · · 1 2 1 1 · 1 · · · · · · · · · · · · · · · · · · · IV 1 · · ·
Campanula rotundifolia · · · · · · 1 1 · 1 1 · 1 1 · · 1 · · · · · · · · · · · · · · · IV 1 I 1 · ·
Differential species in Dicrano maji–Salicetum lanatae
Carex stans ········1·····53·31 · · 1 · · · · · · · · · · I 1 IV 4II 1 ·
Dicranum majus ··············3 3 132············ · · V3· ·
Polemonium acutiorum · · · · · · · · 1 · · · · · 1 1 1 1 2 · · · · · · · · · · · · · I 1 V 1 · ·
Aulacomnium palustre (O-S) ··············13· 2 1 1 · · · · · · · · · · · · · IV 2 II 1 ·
Differential species in Sphagno girgensohnii–Betuletum nanae
Sphagnum girgensohnii ··············3· · 1 · 5 5 6 · · · · · · · · · · · II 2 V 6 ·
Polytrichum commune ·················41333········3· · II 4V3I3
Differential species in.Empetro subholarctici-Eriophoretum vaginati
Cladonia stellaris (L-V) 14·41 · · · · · · 6 1 · · · · · · 1 · · 1 5 1 1 1 1 1 5 · IV 4II 4· II 1 V 3
Sphagnum lenense ······················5 · · · 3154 4 · · · · IV 4
Diagnostic combination of species in alliance Rubo chamaemori–Dicranion elongati (Rc-De)
Cetraria islandica 1124· · 32431431 · 1 · · · 444 ·331 1 1 1 · 1 IV 2 V 3I 1 V 4IV 2
Cladonia stygia 35355·····45·······51·356555564V4II 4· IV 4V 5
Dicranum elongatum 33323····1··1·········331313 3 · 5 V 3II 1 ·· V 3
Ledum palustre subsp. decumbens ·3222· 2222· 22· · · 11· 111544444444 IV 2 IV 2 II 1 V 1 V 4
Diagnostic species in class Salicetea herbaceae (Sh)
Salix polaris ········21····13331············ · II2 V3· ·
Carex lachenalii ········1·····132 1 · · · · · · · · · · · · · · I 1 IV2 · ·
Conostomum tetragonum ·······2······················· · I2 · · ·
Pohlia drummondii ················1·············· · · I1 · ·
Ranunculus nivalis ··············111·············· · · III1 · ·
Ranunculus pygmaeus ················1·············· · · I1 · ·
Sibbaldia procumbens ·················1············· · · I1 · ·
Diagnostic species in order Deschampsio exuosae–Vaccinietalia myrtilli (D-V)
Carex arctisibirica ·33331 2 · 2 1 1 1 1 · · · 1 · · 3· · · · · · 2 2 · · · V 3IV 2 I 1 II 3II 2
Diagnostic species in class Loiseleurio procumbentis–Vaccinietea (L-V)
Betula nana (D-V, O-S, Rc-De) 44444223222423·12326772223·3·3 4 V4V3IV 2 V 7 IV 3
Vaccinium uliginosum subsp. microphyllum (O-S, Rc-De) ·1231 · 2 31 · 2 331 · · 1 1 31111222132 · 1 IV 2 V 3III 2 V 1 V 2
Flavocetraria cucullata 3 3 214431 · 333341·····3·4333· 5 3 3 3 V3V3I 1 II 3V3
Vaccinium vitis-idaea subsp. minus (Rc-De) 1 1 1 1 2 · 2 2 1 2 · 1 2 · · · 1 · 1 1 3322121211·3V 1 IV 2 II 1 V 3V 2
Aulacomnium turgidum 1 · 1 · 3· · 1 · · · 1 1 · 1 · 1 · 1 1 3 3 · · · 1 · · · · 1 III 2 II 1 III 1 V 3II 1
Huperzia arctica (O-S) ········1···11················· · II1 · · ·
Lycopodium annotinum subsp. pungens ············1····11············ · I1 II1 · ·
Ochrolechia frigida ··2····2·2····················1 I2 II2 · · I1
Sphaerophorus globosus ·········3··1·················· · II2 · · ·
Cladonia bellidiora ········1······················ · I1 · · ·
Diphasiastrum alpinum ·················1············· · · I1 · ·
Lycopodium clavatum subsp. monostachyon ········1······················ · I1 · · ·
Pedicularis lapponica ···················1··········· · · · II1 ·
Stereocaulon paschale ········3······················ · I3···
43
Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Syntaxonomic diversity of the Tazovsky Peninsula, the Arctic
Table 1 Continued.
SYNTAXON CODE A B C D E A B C D E
Diagnostic species in class Oxycocco–Sphagnetea (O-S)
Andromeda polifolia subsp. pumila (Rc-De) ········1···············211··1· · I1 · · III1
Eriophorum vaginatum ··1·1···············1·32363435 6 II 1 · · II 1 V 4
Polytrichum strictum (Rc-De) ···················4······3· · · · · · · II 4I3
Rubus chamaemorus (Rc-De) ··············4····334533243444 · · I 4V3V4
Sphagnum balticum ······················55·45 · 5 · 3· · · · IV 5
Sphagnum capillifolium ················ ······3· · · · · · · · · · · I 3
Sphagnum compactum ···························4· · · · · · · I 4
Sphagnum fuscum ·······················45 · · · · · · · · · · II 4
Sphagnum russowii ··············3················ · · I3· ·
Other species
Alectoria nigricans · · 2 · 1 · · · · · 1 · · 3· · · · · · · · · · · · · · · 1 · II 1 II 2 · · I 1
Antennaria villifera · · · · · · · 1 · · 1 · 1 1 · · 1 1 · · · · · · · · · · · · · · III 1 II 1 · ·
Arctocetraria andrejevii ···········4·····52············ · I4II 4· ·
Armeria scabra ······1111····················· · III1 · · ·
Bistorta elliptica · · 1 · · · · 1 · · · · 1 1 · · · 1 1 · · · · · · · · · · · · I 1 II 1 II 1 · ·
Bistorta vivipara · · 1 · · · · 1 1 1 · 1 · · 1 32 1 1 · · · · · · · · · · · · I 1 III 1 V 2 · ·
Bryum sp. ····1··········11·············· I1 · II1 · ·
Calamagrostis holmii ·······2·1·····1··············· · II2 I1 · ·
Cetraria aculeata ··11···1····1·················· II1 II1 · · ·
Cetraria laevigata · · 1 1 1 · · · · 1 1 31 1 · · · · · · 1 · 1 1 1 1 1 3 3 3 3 III 1 IV 2 · II 1 V 3
Cetrariella delisei ·······4 4 · · · 1 · 1 · 1 5 3············ · II4IV 3· ·
Cladonia amaurocraea 1 1 · · · 1 · · · 1 · · 1 · · · · · · · 1 · 3331535 1 1 III 1 II 1 · II 1 V 3
Cladonia arbuscula 4 4 131 1 · · 1 1 4114·······111·····11 V3IV 3· II 1 III 1
Cladonia cenotea ····1···············1·1······11 I1 · · II1 II1
Cladonia chlorophaea 1 · 1 · 1 · · 2 · · · · 1 1 1 1 1 · · · · · 1 · · 1 · · · · 1 III 1 II 1 III 1 · II 1
Cladonia cocciferal 1 · · · · · · 2 2 1 · · 1 · · · 1 · · · · · · · · · · · · · · I 1 III 2 I 1 · ·
Cladonia cornuta ··1·1···············331 · · 1 · · · · 1 II 1 · · IV 3II 1
Cladonia cyanipes ····················1····1···3· · · · II 1 II 3
Cladonia gracilis s.l. 1 1 2 · · · · 1 · · · 1 1 · 1 1 · 313· · · · · · · 1 · · 1 III 1 II 1 IV2 II 3II 1
Cladonia pleurota · · 1113· · · · · · · · · · · · · · 1 · 1 · · 1 · · · · 1 IV 2 · · II 1 II 1
Cladonia subfurcata ·1······3··············111·1·1· I1 I3· · III 1
Cladonia sulphurina ······················1······11 · · · · II1
Cladonia uncialis ·1··1···21····················· II1 II2 · · ·
Dicranum laevidens ···············3····3·3···3 4 ·3· · · I 3II 3III3
Equisetum arvense subsp. boreale · · · 2 · 1 1 1 · 32 2 1 · 3432 1 1 · · · · · · · · · · · II 2 IV 2 V 3II 1 ·
Eriophorum angustifolium · · · · 1 · · · · · · · · · 1 1 1 · · 1 · · · · · · · 1 · · · I 1 · III 1 II 1 I 1
Festuca rubra subsp. arctica ·······111······1·············· · II1 I1 · ·
Gymnomitrion coralloides · · 1 · · · 1 · · · 1 · 2 3················· I1 II2 · · ·
Hylocomium splendens ·······4······13132253········1 · I4V 2 V 4I 1
Orthocaulis binsteadii · 1 · · 1 1 · · · · · · · · · · · · · · · 1 · 1 · · 1 · · · III 1 · · · II 1
Pachypleurum alpinum ·······111······1·············· · II1 I1 · ·
Peltigera scabrosa ··············11·31 · 1 3· · · · · · · · · · · IV 2 IV 2 ·
Pertusaria dactylina ····1·····1··············1····· I1 I1 · · I1
Petasites frigidus ··············131·············· · · III2 · ·
Pleurozium schreberi · · 1 · · · · · · 1 · · · · · · 1 · 1 4·1·····3· · 1 I 1 I 1 II 1 IV 3II 2
Poa alpigena · · 1 1 · · · 1 1 1 · · · · 1 · 1 1 · 1 · · · · · · · · · · · II 1 II 1 III1 II 1 ·
Poa arctica ···············2····1······1··· · · I2 II1 I1
Pogonatum dentatum 1 · 2 1 · · 1 2 · 1 1 · 1 · · · · · · · · · · · · · · · · · · III 1 IV 1 · · ·
Pohlia nutans 1·······1·····1················ I1 I1 II1 · ·
Polytrichum juniperinum · · 3·3·······1··1····1···13· · · · · II 3I 1 I 1 II 1 II 2
Polytrichum piliferum · · · · · 1 2 · 3···31················· I1 III3···
Ptilidium ciliare · · · 1 · · · 1 · 3· · · · · 1 1 1 1 1 1 1 · · · · · 1 · · 1 I 1 II 2 IV1 V 1 II 1
Pyrola minor ················111············ · · III1 · ·
Ranunculus propinquus ··············121·············· · · III2 · ·
Salix glauca 1 1 2 · 1 1 · 1 · 1 1 · · · · 43132 2 · · · · · · · · · · V 1 II 1 IV3IV 2 ·
Salix lanata ·········1····55635 · · 1 · · · · · · · · 1 · I 1 V 5 II 1 I 1
Salix pulchra 1 · 1 · 1 · · · · 2 · · · · · · 1 · · · · · · · · · · · · · 1 III 1 I 2 I 1 · I 1
Sanionia uncinata · · · · · · · · · 1 · 1 1 · 5 5 5 363· · · · · 1 · 1 · · · · II 1 V 5 II 3II 1
Sphenolobus minutus 1 1 1 · 1 · · · · · · 1 1 · · · · · 1 · 1 1 · · 1 1 1 · · IV 1 II· 1 I 1 II 1 III1
Stellaria peduncularis · · · · · · · · · 1 · · 1 · 1 1 1 · · · · · · · · · · · · · · · II 1 III 1 · ·
Stereocaulon alpinum ·······212······1·············· · II2 I1 · ·
Thamnolia vermicularis 1 1 · 1 · 1 · 2 · 1 · · 1 1 · · · · · · · · · ·······3IV 1 III 1 · · I 3
Toeldia coccinea ···1·····11·1··········· · · · · · · · I 1 II 1 I 1 · ·
Trisetum spicatum · · · 1 · · · 1 · 1 · · 1 · · · · 1 · · · · · · · · · · · · · I 1 II 1 I 1 · ·
Veratrum lobelianum ···············2222············ · · IV2 · ·
Viola epipsiloides ················221············ · · III2 · ·
Note. Single occurrence: Alopecurus alpinus 17(1); Arctagrostis latifolia 5(1); Artemisia borealis 7(1); A. tilesii 16(1), 17(1); Astragalus alpinus subsp.
arc ticus 17(1); Calamagrostis lapponica 4(1), 22(1); C. neglecta subsp. groenlandica 4(2), 6(1); Carex aquatilis 22(3); C. rariora 18(1), 30(1); C. rotundata
5(1), 29(1); Cerastium jenisejense 17(1); Corallorrhiza trida 17(1); Dryas octopetala subsp. subincisa 7(2), 8(2); Dupontia scheri 15(1); Eremogone polaris
13(1); Erio phorum russeolum subsp. leiocar pum 25(1); E. russeolum subsp. russeolum 15(2); E. scheuchzeri 16(1); Hedysarum hedysaroides subsp. arcticum
17(1); Juncus biglumis 9(1); J. tridus 13(1); Lagotis minor 8(1), 17(1); Luzula multiora subsp. frigida 18(1), 19(1); L. wahlenbergii 15(1); Lychnis sibirica
subsp. samojedorum 7(1); Myosotis asiatica 17(1); M. palustris 19(1); Oxyria digyna 10 (1), 17(1); Parnassia palustris subsp. neogaea 17(1); Pedicularis
com pac ta 17(1); P. hirsuta 8(1); P. interioroides 16(1), 17(1); P. labradorica 3(1), 18(1); Pinguicula vulgaris 25(1); Polemonium boreale 7(1), 14(1); Pyrola
ro tun di folia 9(1); Rumex acetosa subsp. pseudoxyria 13(1); R. graminifolius 7(1); Salix arctica 16(1); S. lapponum 19(1); S. myrtilloides 5(1); S. phylicifolia
19(2), 22(1); S. reptans 17(1), 26(1); Saxifraga cernua 17(1); S. hieracifolia 16(1); S. nelsoniana 17(1); Solidago lapponica 13(1), 18(1); Trisetum sibiricum
subsp. litorale 17(1); Trollius asiaticus 17(1); Valeriana capitata 8(1). Lichens: Arthrorhaphis alpina 10(1); Asahinea chrysantha 10(1); Cetraria nigricans
6(1),13(1); Cladonia deformis 23(1); C. macrophylla 30 (1); C. verticillata-vulcani 6(1), 13(1); Dactylina arctica 5(1), 10(1); Icmadophila ericetorum 23(1);
Lobaria linita 8(1); Peltigera aphthosa 22(1), 31(1); P. leucophlebia 8(1), 17(1); P. malacea 13(1), 22(1); P. rufescens 8(1); Pertusaria panyrga 3(1);
Protopannaria pezizoides 8(1); Stereocaulon sp. 18(4). Mosses: Brachythecium sp. 15(1); B. turgidum 16(1), 17(1); Bryum pseudotriquetrum 16(1),
17(1); Calliergon cordifolium 18(1); Straminergon stramineum 15(3); Ceratodon pur pureus 1(1); Climacium dendroides 8(1); Dicranum acutifolium 10(3);
D. spadiceum 8(3), 9(1); Distichium capillaceum 1(1); Kiaeria glacialis 9(4); Oncophorus wahlenbergii 5(1), 15(1); Paludella squarrosa 15(3); Plagiomnium
cuspidatum 16(1), 17(1); Pohlia sp. 3(1), 10(1); Polytrichastrum alpinum 30(1); Polytrichum jensenii 28(3), 29(1); P. longisetum 5(1).
Author: O.V. Khitun. Localities: YamalNenets Autonomous Area. T – the Tazovsky Peninsula, upper reaches of the Verkhnyaya Yarei ya
kha (Fig. 1, site 1): 1 – 68°13′10.2″ 75°12′47.7″, 31.07.2017; 2 – 68°13′12.5″ 75°12′52.3″, 31.07.2017; 3 – 68°12′25.8″ 75°13′25.5″, 04.08.2017;
4 – 68°12′25.3″ 75°13′25.1″, 04.08.2017; 5 – 68°12′32.7″ 75°13′39.7″, 06.08.2017; 6 – 68°12′06.8″ 75°13′49.2″ 06.08.2017; 11 – 68°12′24.9″
75°13′24.5″ 04.08.2017; 12 – 68°12′24.8″ 75°13′24.2″, 04.08.2017; 13 – 68°12′23.0″ 75°13′23.2″, 04.08.2017; 14 – 68°12′05.0″ 75°13′08.8″,
04.08.2017; 18 – 68°12′23.3″ 75°13′23.5″, 04.08.2017; 19 – 68°12′23.1″ 75°13′22.6″, 04.08.2017; 20 – 68°13′30.3″ 75°13′25.0″, 02.08.2017; 21
– 68°14′17.2″ 75°14′48.8″, 03.08.2017; 22 – 68°14′18.4″ 75°14′45.4″, 03.08.2017; 23 – 68°13′11.0″ 75°12′49.5″, 31.07.2017; 24 – 68°13′20.6″
75°13′07.3″, 02.08.2017; 25 – 68°13′27.8″ 75°13′20.3″, 02.08.2017; 26 – 68°13′29.6″ 75°13′23.6″, 02.08.2017; 27 – 68°13′15.5″ 75°13′21.1″,
02.08.2017; 28 – 68°13′22.6″ 75°13′10.5″, 02.08.2017; 29 – 68°13′14.5″ 75°13′48.1″, 02.08.2017; 30 – 68°13′13.2″ 75°14′31.0″, 02.08.2017;
31 – 68°14′03.4″ 75°14′25.1″, 03.08.2017; G1 – the Gydansky Peninsula, basin of the Tanama River middle reaches (Fig.1, site 3): 7 –
69°56′45.9″ 78°50′44.4″, 14.07.2017; G2 – the Gydansky Peninsula, Lake Parisento surroundings (Fig.1, site 2): 8 – 70°05′26.0″ 75°34′54.6″,
21.07.2017; 9 – 70°06′02.7″, 75°36′39.0″, 22.07.2017; 10 – 70°05′45.4″, 75°38′08.7″, 23.07.2017; 15 – 70°05′21.6″, 75°38′44.6″, 24.07.2017;
16 – 70°04′60.0″, 75°41′56.2″, 25.07.2017; 17 – 70°02′17.1″, 75°43′37.6″, 27.07.2017. * – nomenclatural type.
44 Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Telyatnikov et al.
parts of their steep slopes with
va rious aspects, at ele va tions
bet w een 24 and 39 m a.s.l. The
soil organic horizon is poorly
de veloped, peaty, 1–3 cm thick;
the underlying mineral ground
is sand.
Structure and composition.
The sparse (10 to 25 %) upper
la yer of shrubs (Betula nana,
usual ly 1–10 %) and herbs is
usual ly up to 10 cm height. Ca rex
arc ti sibirica, Hie ro chloё alpina, Fes-
tuca ovina, Aco no go non ochre a tum,
Tanacetum bi pin na tum and Equi-
setum arvense subsp. bo reale are
the most abundant herbs. The
dwarf shrub-cryp to gam ground
layer is wellde ve loped, 1–3 cm
thick, do mi na ted by lichens (20–
80 %) and mos ses (5–35 %),
with pat ches of prostrate dwarf
shrubs such as Arctous alpina,
Em pet rum sub ho larc ticum, Salix
num mu laria (up to 35 %). Flavo-
cet ra ria cucu l lata, Thamnolia ver mi-
cu la ris, Cet ra ria is lan di ca, Cla do nia
ar bus cula pre vail among li chens.
Po ly tri chum hy per bo reum, P. pili fe-
rum and Ra comitrium lanuginosum
are abundant among mosses.
Low shrub
communities in mesic
habitats
Dicrano maji–Salicetum lana-
tae ass. nova hoc loco (Table
1, rel. 15–19; Table 3; Fig. 2C)
Low willow thickets with horse-
tail and moss under sto rey we
do not refer yet to any higher
syn ta xo no mical unit. By their
com po si tion and structure, they
are tran si tio nal bet ween three
classes: snowbed vegetation
Sa li ce tea her ba ceae Br.Bl. 1948,
dwarf shrub tundra Loiseleurio
pro cum ben tis–Vaccinietea Eggler
ex Schu bert 1960 and sedge
mires Scheuch ze rio–Caricetea nigrae
(Nordh. 1936) Tx. 1937.
Table 2. Associations Eriophoro leiocarpi–Caricetum rotundatae (subass. typicum – F, subass.
caricetosum chordorrhizae – G) and Carici stantis–Warnstoretum exannulatae (H)
SYNTAXON CODE F G H F G H
Locality
G1
G1
G2
G2
G2
T
T
T
T
T
G1
G2
T
T
T
T
T
G1
G2
G2
G2
T
Cover total, %:
90
100
100
100
100
100
100
100
90
100
90
100
100
100
100
100
100
95
90
90
100
100
Cover shrubs, %
1
–
–
5
1
10
–
5
1
1
1
1
1
–
–
5
–
1
–
–
–
–
Cover dwarf shrubs, %
10
–
–
5
–
–
–
5
1
1
5
–
1
–
–
1
–
–
–
–
–
–
Lichens, %
–
–
–
1
–
5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Mosses, %
70
40
90
90
90
100
90
100
70
100
35
95
100
90
100
100
80
50
55
70
40
100
Herbs, %
40
45
50
80
80
85
85
50
65
90
50
90
80
65
80
80
100
50
55
80
50
15
Height shrubs (cm)
10
–
–
10
10
20
–
35
30
20
15
15
25
–
–
15
–
10
–
–
–
–
Aspect (°)
–
135
–
338
–
–
90
180
–
135
180
–
–
–
–
–
–
–
360
–
–
90
Inclination of slope (°)
0
1
0
1
0
0
1
2
0
2
1
0
0
0
0
0
0
0
1
0
0
1
Altitude (m a.s.l.)
17
24
30
20
34
52
44
48
45
38
17
30
51
51
54
53
54
21
25
26
21
44
Total number of species
11
14
13
21
16
22
5
10
8
18
17
18
12
7
9
13
8
14
12
10
8
4
Number of vascular plant species
7
7
5
10
6
7
3
7
6
9
8
8
8
5
5
7
6
8
6
2
4
1
Number of lichens species
–
–
–
4
–
10
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Number of moss species
4
7
8
7
10
5
2
3
2
9
9
10
4
2
4
6
2
6
6
8
4
3
Relevé nr.: in the database
49
87
191
204
207
239
249
253
243
289
8
189
261
262
263
267
268
2
135
143
175
250
Relevé nr.: in the table
1
2
3
4*
5
6
7
8
9
10
11
12
13*
14
15
16
17
18
19
20
21
22
Number of relevés 98 5
Differential species in Eriophoro leiocarpi-Caricetum rotundatae and subass. typicum
Carex rotundata (Cr) 45555574655663335 · · · · · V 6 V 5 ·
Eriophorum russeolum subsp. leiocarpum 32235535343· 2 2 · · 5 · 32 · · V 4IV 4II 3
Polytrichum jensenii (Cr) 3333131 2 · 3232 · 1 3·3· · · · V 3IV 3I4
Luzula wahlenbergii · · 1 1 1 · 1 1 · · · 1 1 · · · 2 · · · · · III 1 II 2 ·
Differential species in subass. caricetosum chordorrhizae
Carex chordorrhiza (S-C) 3····3· · · · 3215614 4 · · · · II 3V 5 I 4
Carex rariora (Cr, Sp) · 2 3·3· · · · 1 2 423363·3· · · II 3V4I3
Sphagnum aongstroemii ···5·····3·35 5 5 · · · · · · · I 5 IV 5 ·
Differential species in ass. Carici stantis–Warnstoretum exannulatae
Warnstora exannulata (De) ·3 3 ·4····31 · · · 6 · · 4 4 54 3 II 4II 5 V 4
Straminergon stramineum (De, S-C) ··111··········3··313·II 1 I 3IV 3
Differential species in var. Warnstora sarmentosa
Warnstora sarmentosa (De) ···········3·····3 3 3 3 3 · I 3V3
Differential combination of species in suballiance Caricenion rariorae (Cr)
Eriophorum russeolum subsp. russeolum (Sb) · 1 · · · 3···4· · · · 1 1 · 1 3· · · II 3II 3II 2
CDiagnostic species in alliance Sphagnion baltici (Sb)
Sphagnum balticum (Cr) 3355457754 3 ·3· · · · · · · · · V 6 II 4·
Diagnostic species in alliance Drepanocladion exannulati (De) and class Scheuchzerio–Caricetea nigrae (S-C)
Aulacomnium palustre · · 2 · 2 · · · · 2 2 2 · · · · · · · 1 · · II 2 II 2 I 1
Carex stans 33313· · · · · · 1 · 1 1 · · 5 5 7 3· III 3II 1 IV 6
Comarum palustre (De) ················31 · · · · · I 4I 1
Eriophorum angustifolium 1 · · 4·3···3· · · · · · · 2 · · 5 · II 4I4II 5
Paludella squarrosa ··················35 · · · · II 5
Sphagnum fallax ···········5········ ·· · I6 ·
S. lindbergii (Cr, Sb, Sp) ·········3············ · I 4·
S. majus ··············3· · · · · · · · I 4·
S. obtusum · · 3······5·····46 · · · · 7 I 3II 5 I 7
S. russowii ···········1········ ·· · I1 ·
S. squarrosum ··········1····64· · · · · · II 5 ·
S. warnstori ···············3· · · · · · · I 4·
Other species
Andromeda polifolia subsp. pumila 3······1·13· 1 · · 1 · · · · · · II 3III 2 ·
Aulacomnium turgidum · · · 1 1 · · · · · 2 · · · · 1 · · · · · · II 1 II 2 ·
Betula nana 1 · · 313·311111· · 3· · · · · · IV 2 IV 2 ·
Calliergon cordifolium ·········1·········11· · I 1 II1
Dicranum laevidens · · · 2 2 2 · · · · · 1 · · · · · · · · · · II 2 I 1 ·
Drepanocladus aduncus ·3· · 3·················II3· ·
Eriophorum vaginatum · 1 · 2 · · · · · · · 1 · · · · · 1 · · · 4II 2 I 1 II 3
Flavocetraria cucullata ···1·2 ················II2 · ·
Scorpidium revolvens 12········3······3· · · · II 2 I 3I3
Pedicularis interioroides · 1 · · · · · · · · 1 1 · · · · · · · · · · I 1 II 1 ·
Salix myrtilloides · · · · · 1 · · 1 1 · · 1 · · 1 · 1 · · · · II 1 II 1 I 1
Sanionia uncinata · · · 1 4 3 ·············1··II3· I 1
Sphagnum compactum ·3 3 ·4···5·············III4· ·
S. lenense ·3 4 · · 5 · 4· · · 1 · · · · · · · · · · III 5 I 1 ·
Note. Single occurrence: Caltha arctica 19(1), 21(1); Dupontia scheri 19(1), 21(1); Empetrum sub ho l arc ti cum 9(1); Ledum palustre subsp. decumbens
4(1), 10(1); Pedicularis lapponica 11(1); Rubus chamaemorus 4(2), 8(2); Salix pulchra 18(1); Vaccinium uliginosum subsp. microphyllum 8(1), 9(1); V. vitis-
idaea subsp. mi nus 4(3); lichens: Cetraria islandica 6(1); C. laevigata 6(1); Cladonia cenotea 6(1); C. chlorophaea 6(1); C. cor nuta 6(1); C. cyanipes 6(1); C.
deformis 6(1); C. gracilis s.l. 6(1); C. stygia 6(1); C. subfurcata 4(1); Peltigera scab ro sa 4(1); Thamnolia vermicularis 4(1); mosses: Dicranum elongatum 12(4); D.
groenlandicum 12(1); D. majus 20(3); Pohlia drummondii 18(01); Polytrichum juniperinum 11(1); Rhizomnium andrewsianum 18(1); R. pseudopunctatum 19(2);
Sphagnum girgensohnii 10(4); S. perfoliatum 13(5), 14(6); S. steerei 1(5), 11(3); S. tundrae.
Author: Khitun O.V. Locality: YamalNenets Autonomous Area. T – the Tazovsky Peninsula, up per reaches of Verkhnyaya Yareiyakha
River (Fig. 1, site 1): 6 – 68°13′16.9″ 75°13′00.5″, 02.08.2017; 7 – 68°13′15.2″ 75°13′25.6″, 02.08.2017; 8 – 68°13′14.0″ 75°14′06.7″, 02.08.2017; 9 –
68°13′25.7″ 75°13′16.3″ 02.08.2017; 10 – 68°12′27.2″ 75°14′16.4″, 06.08.2017; 13 – 68°14′13.7″ 75°14′36.4″, 03.08.2017; 14 – 68°14′11.0″ 75°14′30.2″,
03.08.2017; 15 – 68°14′01.4″ 75°14′25.5″, 03.08.2017; 16 – 68°13′53.3″ 75°14′59.7″, 03.08.2017; 17 – 68°13′52.7″ 75°14′50.0″, 03.08.2017; 22 – 68°13′15.2″
75°13′35.5″, 02.08.2017; G1 – the Gydansky Peninsula, basin of the Tanama River middle reaches (Fig.1, site 3): 1 – 69°56′56.0″ 78°49′22.2″,
15.07.2017; 2 – 69°57′36.9″ 78°45′55.8″, 18.07.2017; 11 – 69°58′07.8″ 78°47′58.7″, 11.07.2017; 18 – 69°58′17.3″ 78°48′05.9″, 10.07.2017; G2 – the Gydansky
Peninsula, Lake Parisento surroundings (Fig.1, site 3): 3 –70°05′03.8″ 75°41′22.0″, 25.07.2017; 4 – 70°05′11.8″ 75°40′16.8″, 26.07.2017; 5 –70°05′13.6″
75°39′55.2″, 26.07.2017; 12 –70°05′02.7″ 75°41′32.4″, 25.07.2017; 19 – 70°05′45.1″ 75°38′09.6″, 23.07.2017; 20 – 70°05′39.4″ 75°38′38.8″, 23.07.2017; 21
–70°04′52.1″ 75°43′03.3″, 25.07.2017. * – nomenclatural type.
45
Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Syntaxonomic diversity of the Tazovsky Peninsula, the Arctic
Differential group of species of this association are: Carex
stans, Dicranum majus, Polemonium acutiorum, Aulacomnium palustre.
Holotypus: 18 (281); T1; YaNAA; 1; 68°12′23.3″N 75°13′23.5″E;
36; 100.
Relevé. The relevé was taken at the bottom of a hollow
bet ween two outreaches of watershed hill with a smooth
sur face, with an inclination of 1 ° and an aspect of 292 °.
The cover of mosses is 45 %, herbs 30 %, shrubs 20 %,
dwarf shrubs 10 % and lichens 50 %. Soil organic horizon
is dark brown mucky peat 15–20 cm thick, underlained by
dark yellow sandy loam. 04.08.2017. O.V. Khitun.
List of species: Arctocetraria andrejevii 5, Cetrariella delisei 5, Po-
ly tri chum commune 4, Stereocaulon sp. 4, Betula nana 3, Cladonia
gracilis s. l. 3, Carex stans 3, Dicranum majus 3, Hylocomium splen-
dens 3, Peltigera scabrosa 3, Salix lanata 3, S. polaris 3, Sanionia
un ci na ta 3, Calamagrostis neglecta 2, Equisetum arvense subsp. bo-
rea le 2, Viola epipsiloides 2, Antennaria villifera 1, Aulacomnium
pa lust re 2, Bistorta elliptica 1, B. vivipara 1, Calliergon cordifolium
1, Carex lachenalii 1, C. rariora 1, Diphasiastrum alpinum 1,
Fes tu ca ovina 1, Ledum palustre subsp. decumbens 1, Luzula mul-
ti o ra subsp. frigida 1, Lycopodium annotinum subsp. pungens 1,
Pe di cularic labradorica 1, Poa alpigena 1, Polemonium acutiorum 1,
Ptilidium ciliare 1, Pyrola minor 1, Salix glauca 1, Sibbaldia pro cum-
bens 1, Solidago lapponica 1, Sphagnum girgensohnii 1, Tanacetum
bi pinnatum 1, Trisetum spicatum 1, Vaccinium uliginosum subsp.
microphyllum 1, Veratrum lobelianum 2.
Distribution and ecology. These phytocoenoses occur in
the southern part of the TTS on the Gydansky Peninsula
and in the STS on the Tazovsky Peninsula within an ele va tion
range from 9 to 36 m a.s.l. They grow on slopes of wa ter shed
hills (in cli na tion of 1 to 20°) and on at bottoms of hol lows
with slight ly hummocky nanotopography. Soil or ga nic ho ri-
zon is mucky peat underlained by sand or sandy loam.
Structure and composition. The stands have three ver ti-
cal strata. The overstory is 60 to 180 cm high, formed by
hy poarctic-montane willow species (Salix gla uca, S. lanata)
and Betula nana and its cover varies from 20 to 90 %. The
eld layer is 15 to 20 cm high, formed by herbs and varies
in cover from sparse to closed (10–70 %). Herbs are dis tri
buted unevenly under the willow canopy, con cen tra ting in
open parts. Equisetum arvense dominates, Poa alpigena, Po le-
mo nium acutiorum, Viola epipsiloides and Carex stans are com-
mon but not abundant. Dwarf shrub–moss ground layer
is closed. Moss cover reaches 90 %; Sanionia uncinata, Hy lo-
co mium splendens and Dicranum majus dominate. Lichens and
dwarf shrubs (Salix polaris and Vaccinium uligino sum subsp.
microphyllum) are not abundant (5–15 %).
Peat-moss vegetation in moist habitats
Tussock tundra dominated by Eriophorum vaginatum is
assigned to the class Oxycocco-Sphagnetea Br.-Bl. et Tx. ex
West hoff et al. 1946, order Sphagnetalia medii Kästner et
Flöss ner 1933 and alliance Rubo chamaemori–Dicranion elongati
O. Lav rinenko et I. Lavrinenko 2015.
The Oxycocco-Sphagnetea comprises dwarf shrub, sedge
and peat-moss vegetation of the Holarctic ombrotrophic
bogs, fens and wet heaths. Diagnostic species include And-
ro meda polifolia subsp. pumila, Aulacomnium palustre, Betula na na,
Huperzia arctica, Eriophorum vaginatum, Polytrichum stric tum, Rubus
chamaemorus, Sphagnum balticum, S. capillifolium, S. com pac tum,
S. fus cum, S. russowii. Vaccinium uliginosum subsp. microphyllum.
The Sphagnetalia medii is represented by Sphagnum-do mi-
nated bog communities occurring in suboceanic and con ti-
nen tal regions, and in the mountains in the northern hemi-
sphere. Diagnostic species are the same as for the class.
The Rubo chamaemori–Dicranion elongati includes dwarf
shrub, cloudberry, moss, lichen communities on oligo tro-
phic sub arc tic peatlands, including palsa bogs and high-cen-
te red poly gons. Differential combination of species in cludes
And ro me da polifolia subsp. pumila, Betula nana, Rubus cha mae mo-
rus, Le dum palustre subsp. decumbens, Vaccinium vitis-idaea subsp.
mi nus, V. uli gi nosum subsp. microphyllum, Dicranum elon ga tum,
Poly tri chum strictum, Flavocetraria nivalis, Cetraria is lan dica, Cla-
do nia arbuscula and C. rangiferina. Cladonia stygia was for a long
time considered as a form of C. rangiferina, but now they are
trated as different species (Ahti & Hyvönen 1985) and in
the studied locality we found predominantely Cladonia stygia.
We distinguished two associations.
Sphagno girgensohnii–Betuletum nanae ass. nova hoc
loco (Table 1, rel. 20–22; Table 3; Fig. 2D)
Differential species: Empetrum subholarcticum, Calamagrostis
neglecta, Sphagnum girgensohnii, Polytrichum commune.
Holotypus: 21 (257); T1; YaNAA; 1; 68°14′17.2″N
75°14′48.8″E; 55; 100.
Relevé. The relevé is located on the lake’s terrace with
slightly hummocky surface, with an inclination 1° and an
aspect 225°. Soil organic horizon is dark brown mucky peat,
10 cm thick, underlain by sandy loam. The cover of mosses
is 100%, of shrubs 80 %, dwarf shrubs 10 %, herbs 25 %,
lichens 20 %. 03.08.2017. O.V. Khitun.
List of species: Betula nana 7, Hylocomium splendens 5, Sphag-
num girgensohnii 5, Cetraria islandica 4, Aulacomnium turgidum 3,
Dic ranum laevidens 3, Polytrichum commune 3, Rubus chamaemorus
3, Vaccinium vitis-idaea subsp. minus 3, Cladonia cornuta 2, Fla-
vo cet raria cucullata 2, Salix glauca 2, Sphenolobus minutus 1, Cet-
raria laevigata 1, Cladonia cenotea 1, C. cyanipes 1, C. pleurota 1,
C. stygia 1, Calamagrostis neglecta 1, Cladonia amaurocraea 1, Em-
petrum subholarcticum 1, Eriophorum vaginatum 1, Festuca ovi na 1,
Ledum palustre subsp. decumbens 1, Peltigera malacea 1, P. scab-
rosa 1, Poa arctica 1, Polytrichum juniperinum 1, Ptilidium cili are 1,
Vaccinium uliginosum subsp. microphyllum 1.
Distribution and ecology. These communities occur in
the STS on the Ta zovsky Peninsula at the sites with re la ti ve ly
deep snow cover: at or gently sloping parts of lakes’ ter
races or on the edges of steep lee slopes with so li uc tion fea
tures in the upper parts of ravines. The soil organic ho ri zon
is 10–15 cm thick and consists of dark brown mucky peat;
the mi ne ral horizons are dark yel low with sandy loam texture.
Structure and composition. The ca nopy of Betula nana is
al most closed, 70–80 %, and is 35–80 cm high. The her bal
layer is 10 cm high, sparse, with pre do minance of Rubus cha-
mae morus and Calamagrostis neglecta. In the ground layer moss
co ver reaches 100 %, cover of lichens is 20 to 40 % and of
dwarf shrubs is 5–10 %. Sphag num girgensohnii dominates in
the moss carpet, while Hylocomium splendens is less abundant.
Cet raria islandica and Cladonia cornuta are the most abundant
li chens and Vaccinium vitis-idaea subsp. minus is the most abun-
dant dwarf shrub.
Empetro subholarctici–Eriophoretum vagi na ti ass. nova
hoc loco (Table 1, rel. 23–31; Table 3; Fig. 2E)
Differential species: Alectoria ochroleuca, Em pet rum subholarc-
ti cum, Cladonia stellaris, Sphagnum lenense.
Holotypus: 27 (248); T1; YaNAA; 1; 68°13′15.5″N
75°13′21.1″E; 47; 100.
Relevé. The stand occurs on the gentle slope of the water-
shed with an inclination 1° and an aspect 22°. The surface is
46 Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Telyatnikov et al.
slightly hummocky and tussocky. Soil organic
horizon is pea ty, 17 cm thick, underlained
by loam. The cover of li chens and mosses
is 90 % and 65 % respectively, the cover of
herbs and shrubs is 30 and 20 %. 02.08.2017.
O.V. Khitun.
List of species: Cladonia amaurocraea 5, C. stygia
5, Sphagnum bal ticum 5, Ledum palustre subsp. de-
cum bens 4, Rubus cha mae mo rus 4, Alectoria och ro-
leuca 3, Dicranum laevidens 3, Eriophorum va gi na-
tum 3, Flavocetraria nivalis 3, Polytrichum strictum
3, Sphagnum le nense 3, Carex arctisibirica 2, And-
ro me da polifolia subsp. pumila 1, Calamagrostis
neg lec ta 1, Cetraria islandica 1, C. laevigata 1, Cla-
do nia stellaris 1, Dicranum elongatum 1, Empetrum
sub ho larc ticum 1, Vaccinium uliginosum subsp. mic-
ro phyllum 1, Vaccinium vitis-idaea subsp. minus 1.
Distribution and ecology. These phyto coe-
no ses occur on high centered polygons in the
polygonal tundramire complexes on the at
tops of watersheds (43 to 52 m a.s.l.) on the
Tazovsky Pe ninsula. Polygons are 5 to 25 m in
diameter, 20 to 40 cm high and have a hum
mo cky surface. Soil organic horison is peaty,
20 to 30 cm thick, underlain by sandy loam.
Structure and composition. These com mu-
ni ties have two ver tical strata. The overstory
with cover of 15 to 70 % is 10 to 15 cm high;
it is for med by even ly distributed graminoids
and herbs, Ru bus chamaemorus and Eriophorum
va gi natum being most com mon, sometimes
with low shrubs (5 to 15 %). The dwarf
shrub, li chen, moss ground layer is well-de-
ve lo ped and closed. Mosses are the most
abun dant bet ween hum mocks and lichens on
the hum mocks. Dwarf shrubs (15–30 %) are
even ly dis tri buted, Ledum palustre subsp.de cum-
bens is the most abundant, Vaccinium uliginosum
subsp. mic ro phyl lum, V. vitis-idaea subsp. minus,
Em pet rum subholarcticum are com mon but less
abun dant. Sphagnum balticum and Dicranum
elon ga tum dominate among mosses, Alectoria
och roleuca, Cetra ria islandica, C. laevigata, Cladonia
amaurocraea, C. stygia and Fla vocetraria cucullata
are the most abundant among lichens.
Sedge-moss vegetation in wet
habitats
Sedge-moss mires and bogs we assign to
the class Scheuch zerio–Caricetea nigrae (Nordh.
1936) Tx. 1937, order Scheuch zerietalia palustris
Nordh. 1936, two alliances Sphagnion bal tici
Kus tova 1987 ex Lapshina 2010, Drepanocladion
exa n nu lati Krajina 1933 and one suballiance
Ca ricenion rariorae Lav rinenko, Matveyeva et
Lavrinenko 2016.
The class Scheuchzerio–Caricetea nigrae com-
prises oligo-mesotrophic and meso tro phic
bogs and intermediate mires rich in mos ses
and sedges. Diagnostic species of the class
present in the study area are Ca rex chor do rrhiza,
C. stans, Comarum palustre, Erio phorum angus ti fo-
lium, Paludella squarrosa, Sphagnum fallax, S. lind-
bergii, S. majus, S. obtusum, S. russowii, S. squar-
rosum, S. warn stori and Straminergon stramineum.
Table 3 Synoptic table of associations in the southern tundra subzone
on the Tazovsky Peninsula (Syntaxa codes – see Tables 1 and 2; among
“others” species with constancy < II are not included).
SYNTAXON CODE A B C D E F G H
Number of relevés 6 8 6 3 9 9 8 5
Diagnostic species in ass. Hierochloo alpinae–Hylocomietum splendentis
Hierochloё alpina (LV) V 2 V 2 · · · · · ·
Polytrichum hyperboreum V4IV 3I 1 · ····
Alectoria ochroleuca (LV) V 5 II 4· · V 1 · · ·
Differential species in ass. Hierochloo alpinae–Hylocomietum splendentis
Festuca ovina IV 2 V 2 II 1 II 1 · · · ·
Luzula confusa (Sh) V 1 IV 1 I 1 · · · · ·
Salix nummularia III 2 IV 3······
Bryocaulon divergens V4 II 4 · · III 1 · · ·
Flavocetraria nivalis (LV) V 1 II 3 · · II 2 · · ·
Bryoria nitidula IV 2 I 1 · · I 1 · · ·
Racomitrium lanuginosum (Sh) II 2 II 2 ······
Differential species in subass. empetretosum subholarctici and var. typicum
Empetrum subholarcticum V 2 V 3I 1 V 1 V 1 I 1 · ·
Arctous alpina IV 2 V 3I 1 ·····
Calamagrostis neglecta (S-C) IV 3IV 2 III 2 V 1 II 1 · · ·
Differential species in var. Aconogonon ochreatum
Tanacetum bipinnatum · V 2 III 1 · · · · ·
Aconogonon ochreatum I 1 V 2 · · · · · ·
Carex quasivaginata (S-C) · IV 1 · · · · · ·
Campanula rotundifolia ·IV 1 I1·····
Differential species in ass. Dicrano maji–Salicetum lanatae
Carex stans (S-C) · I 1 IV 4II 1 · III 3II 1 IV 5
Dicranum majus · · V 3· · · · I 3
Polemonium acutiorum · I 1 V 1 · · · · ·
Aulacomnium palustre ((O-S, S-C) · · IV 2 II 1 · II 2 II 2 I 1
Differential species in ass. Sphagno girgensohnii-Betuletum nanae
Sphagnum girgensohnii · · II 2 V 6 · · I 5 ·
Polytrichum commune · · II 4V4I3···
Differential species in ass..Empetro subholarctici-Eriophoretum vaginati
Cladonia stellaris (LV) IV 4II 4· II 1 V 3· · ·
Sphagnum lenense · · · · IV 4III 4I 1 ·
Dif-sp. in ass. Eriophoro medii-Caricetum rotundatae and subass. typicum
Carex rotundata I 1 · · · I 1 V 6 V 5 ·
Eriophorum medium · · · · I 1 V 4IV 4II 3
Polytrichum jensenii · · · · II 3V3IV 3I4
Luzula wahlenbergii · · I 1 · · III 1 II 1 ·
Differential species in subass. caricetosum chordorrhizae
Carex chordorrhiza (S-C) · · · · · II 3V 5 I 4
Carex rariora · · I 1 · I 1 II 3V4I3
Sphagnum aongstroemii · · · · · I 5 IV 5 ·
Differential species in ass. Carici stantis–Warnstoretum exannulatae
Warnstora exannulata · · · · · II 4II 5 V 4
Straminergon stramineum (S-C) · · I 3· · II 1 I 3III 3
Differential species in var. Warnstora sarmentosa
Warnstora sarmentosa ······I3V3
Diagnostic species in class Salicetea herbaceae (Sh)
Salix polaris · II 2 V 3·····
Carex lachenalii · I 1 IV 2 · · · · ·
Ranunculus nivalis · · III 1 · · · · ·
Diagnostic species in class Loiseleurio procumbentis–Vaccinietea (LV)
Aulacomnium turgidum III 2 II 1 III 1 V 3II 1 II 1 II 2 ·
Betula nana (LV, O-S) V4V3IV 2 V 7 IV 3IV 2IV 2 ·
Flavocetraria cucullata V3V3I 1 II 3V3II 2 · ·
Vaccinium uliginosum subsp. microphyllum IV 2 V 3III 2 V 1 V 2 II 1 · ·
Vaccinium vitis-idaea subsp. minus V 1 IV 2 II 1 V 3IV 2 I 3· ·
Diagnostic species in class Oxycocco-Sphagnetea (O-S)
Andromeda polifolia subsp. pumila · I 1 · · III 1 II 3III 2 ·
Eriophorum vaginatum II 1 · · II 1 V 4II 2 I 1 II 3
Rubus chamaemorus · · I 4V3V4II 2 · ·
Sphagnum balticum · · · · IV 5 V 6 II 3·
S. compactum · · · · I 5 III 4· ·
Diagnostic species in class Scheuchzerio–Caricetea nigrae (S-C)
Eriophorum angustifolium I 1 · III 1 II 1 I 1 II 3I4II 4
Other species:
Antennaria villifera · II 1 II 1 · · · · ·
Armeria scabra · III 1 · · · · · ·
Bistorta vivipara I 1 III 1 V 2 · · · · ·
Carex arctisibirica V3IV 2 I 1 II 3II 2 · · ·
Cetraria islandica IV 2 V 3I 1 V 4 IV 2 I 1 · ·
C. laevigata III 1 IV 1 · II 1 V 3I 1 · ·
Cetrariella delisei · II 4 IV 3·····
Cladonia amaurocraea III 1 II 1 · II 1 V 3···
C. arbuscula V3IV 3· II 1 III 1 · · ·
C. chlorophaea III 1 II 1 III 1 · II 1 I 1 · ·
C. coccifera I 1 III 2 I 1 · · · · ·
Cladonia cornuta II 1 · · IV 3II 1 I 1 · ·
C. gracilis s.l. III 1 II 1 IV 2 II 3II 1 I 1 · ·
C. pleurota IV 2 · · II 1 II 1 · · ·
C. stygia V4II 4· IV 4 V 5 I 1 · ·
C. subfurcata I 1 I 3· · III 1 I 1 · ·
Dicranum elongatum V3II 1 ·· IV 3· I 5 ·
D. laevidens · · I 3II 3III 3II 3I 1 ·
Equisetum arvense sunsp. boreale II 2 IV 2 V 3II 1 · · · ·
Hylocomium splendens · I 4V2 V4I 1 · · ·
Ledum palustre subsp. decumbens IV 2 IV 2 II 1 V 1 V 4I 1 I 1 ·
47
Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Syntaxonomic diversity of the Tazovsky Peninsula, the Arctic
The Scheuch zerietalia palustris comprises wet ombrotrophic
and minerotrophic communities in depressions in bogs,
swamps and mires occurring on peaty soil with high water
table. Diagnostic species: Carex rariora and Sphagnum lindbergii.
The Sphagnion baltici comprises vegetation of wet de pres-
sions in bogs and intermediate mires dominated by oligo-
tro phic Sphagnum-mosses in continental parts of the boreal
zone in the Holarctic. Diagnostic species are: Sphagnum bal-
ticum, S. lindbergii and Eriophorum russeolum (Lavrinenko et
al. 2016). The alliance is represented by suballiance Cari-
ce nion rariorae, comprising vegetation of swamps and de-
pres sions in polygonal bogs and palsas dominated by oli-
go tro phic Sphagnum-mosses in the tundra zone of the East
Euro pean and probably West Siberian sectors of the Arctic.
Differential combination of species includes Carex rari ora,
C. rotundata, Eriophorum russeolum, Sphagnum balticum, S. lind-
ber gii and Polytrichum jensenii (Lavrinenko et al. 2016).
We describe one new association and two subassociations
in this suballiance.
Eriophoro leiocarpi–Caricetum rotundatae (Table 2, rel.
1–17; Table 3)
Differential species: Carex rotundata, Eriophorum russeolum
subsp. leiocarpum, Polytrichum jensenii, Luzula wahlenbergii.
Holotypus: 4 (204); T2; YaNAA; 2; 70°05′11.8″ 75°40′16.8″
E; 20; 100.
Relevé. The community occurs in the wa ter track channel
on the gentle slope. The cover of mosses is 90 %. The cover
of graminoids is 80 %, shrubs and dwarf shrubs 5 % each.
Soils are peaty, moist, with 15–20 cm thick organic horizon
underlained by sandy loam. 26.07.2017. O.V. Khitun.
List of species: Carex rotundata 5, Sphagnum aong stroemii 5,
S. bal ti cum 5, Eriophorum an gus ti folium 4, Betula nana 3, Dic-
ra num laevidens 2, Erio phorum russeolum subsp. leiocarpum 3,
E. vaginatum 3, Po ly tri chum jen senii 3, Vaccinium vitis-idaea
subsp. minus 3, Aula com nium turgidum 1, Carex stans 1, Cladonia
sub furcata 1, Fla vo cet raria cucullata 1, Ledum pa lust re subsp.
decumbens 1, Luzula wahlenbergii 1, Peltigera scabrosa 1, Rubus
chamaemorus 1, Sa nio nia uncinata 1, Straminergon stramineum 1,
Tham nolia vermicularis 1.
Distribution and ecology. These communities occur in
the sou thern part of the TTS on the Gydansky Peninsula
and in the STS on the Tazovsky Peninsula. They occupy
lake depressions, drai ned lakebeds, wet hol lows between
watershed hills, wet troughs on the watershed hills. The
soils are waterlogged, with peat horizons 20
to 30 cm thick un der lained by sandy loam or
clay loam.
Structure and composition. The stands are
rather homogenous, for med by hygrophitic
gra minoids and predominantly Sphag num mos-
ses. The layer of graminoids in these com mu-
nities is up to 80 cm high, with the cover of 40
to 85 %. Carex ro tun data, Erio pho rum russeolum
subsp. leiocarpum and Lu zu la wahlenbergii are the
most abundant. Hyg ro phytic mosses (Sphagnum
balticum and Poly tri chum jensenii predominate)
form a thick carpet with 40 to 100 % cover.
Rarely small patches of dwarf shrubs are
present on the moss pads (Andromeda polifolia
subsp. pumila, Ledum palustre subsp. decumbens).
Eriophoro leiocarpi–Caricetum rotundatae
typicum subass. nov. hoc loco (Table 2, rel. 1–9; Table 3;
Fig. 2F)
Differential species are the same as for the association.
Distribution and ecology. These phytocoenoses occur in
the southern part of the TTS on the Gydansky Peninsula
and in the STS on the Tazovsky Peninsula within the
altitude range of 17 to 52 m a.s.l. on the drained lakebeds,
on low poorly drained watersheds, in troughs of polygonal
tundra-mire complexes.
Eriophoro leiocarpi–Caricetum rotundatae caricetosum
chordorrhizae subass. nov. hoc loco (Tabl. 2, rel. 10–17;
Tabl. 3; Fig. 2G)
Differential species: Carex chordorrhiza, C. rotundata, C. rari-
o ra and Sphagnum aongstroemii.
Holotypus: 13 (261); T2; YaNAA; 1; 68°14′13.7″N
75°14′36.4″E; 51; 100.
Relevé. The stand grows on drained lakebed with a rather
even surface. The cover of mosses is 100 %, graminoids
80 %, shrubs and dwarf shrubs 1 % each. Soils are peaty
and wet, with organic horizon 20–25 cm thick, underlained
by sandy loam. 03.08.2017. O.V. Khitun.
List of species: Carex rotundata 6, Sphagnum aongstroemii 5,
Sphagnum perfoliatum 5, Sphagnum balticum 3, Carex rariora 2,
Eriophorum russeolum subsp. leiocarpum 2, Polytrichum jensenii
2, Andromeda polifolia subsp. pumila 1, Betula nana 1, Carex
chordorrhiza 1, Luzula wahlenbergii 1, Salix myrtilloides 1.
Distribution and ecology. These communities occur in
the sou thern part of the TTS on the Gydansky Peninsula
and in the STS on the Tazovsky Peninsula. They occupy
drai ned lakebeds, sel dom occur in troughs of polygonal
comp lexes on the lo wer watersheds. They were recorded
within the altitude range of 17 to 54 m a.s.l.
Structure and composition. Two vertical strata are clear ly
distinguished in this community: an upper layer of hyg ro-
phi tic sedges (Ca rex rotundata, C. chordorrhiza, C rariira) 20
to 30 cm high with cover 50 to 100 %, and a closed ground
la yer (100 %) for med by hygrophitic mosses Polytrichum jen-
senii and Sphagnum aongstroemii.
The alliance Drepanocladion exannulati comprises non-cal-
cy phytic fens dominated by mosses (Warnstora exannulata
and W. sarmentosa) and with a sparse sedge cover (Eriophorum
poly stachion, E. scheuchzeri, Carex cinerea, C. lachenalii, C. rari o
ra, C. rostrata). Communities of this alliance occur in bo real
and arctic regions as well as in alpine areas in Cent ral and
Sou thern Europe. Diagnostic species include Comarum pa-
Table 3. Continued.
SYNTAXON CODE A B C D E F G H
Orthocaulis binsteadii III 1 · · · II 1 · · ·
Peltigera scabrosa · · IV 2 IV 2 · I 1 · ·
Petasites frigidus · · III 2 · · · · ·
Pleurozium schreberi I 1 I 1 II 1 IV 3II 2 · · ·
Poa alpigena II 1 II 1 III 1 II 1 · · · ·
Pogonatum dentatum III 1 IV 1 · · · · · ·
Polytrichum piliferum I 1 III 3······
Ptilidium ciliare I 1 II 2 IV 1 V 1 II 1 · · ·
Pyrola minor · · III 1 · · · · ·
Ranunculus propinquus · · III 2 · · · · ·
Salix glauca V 1 II 1 IV 3IV 2 · · · ·
S. lanata · I 1 V 5 II 1 I 1 · · ·
S. pulchra III 1 I 1 I 1 · I 1 · · I 1
Sanionia uncinata · II 1 V 5 II 3II 1 II 3· I 1
Stellaria peduncularis · II 1 III 1 · · · · ·
Thamnolia vermicularis IV 1 III 1 · · I 3I 1 · ·
Veratrum lobelianum · · IV 2 · · · · ·
Viola epipsiloides · · III 2 · · · · ·
48 Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Telyatnikov et al.
lustre, Straminergon stramineum, Warnstora exannulata, W. sar-
men tosa. In the study area this alliance is represented by the
va riant of the association Carici stantis–Warnstoretum exannu
la tae Lavrinenko, Matveyeva et Lavrinenko 2016, described
earlier in the East European Arctic (Lavrinenko et al. 2016).
Carici stantis–Warnstoretum exannulatae Lavrinenko,
Matveyeva et Lavrinenko 2016
Differential combination of species includes Carex stans,
Warnstora exannulata and Straminergon stramineum.
Total vegetation cover is 80–100%. Sedges and solitary wil
lows form the canopy up to 30 cm high, with the cover
from 35 to 95 %. The ground moss layer varies from 1 % to
almost closed. These stands occupy paludied depressions
on watersheds, low marine terraces and oodplains. The
soils are peaty, underlained by gleyed mineral horizons. As
so ciation is present in the TTS and STS of the East Euro-
pean Arctic (Lavrinenko et al. 2016). We describe a variant
of this association below.
Carici stantis–Warnstoretum exannulatae var. Warn-
stor a sarmentosa (Tabl. 2, rel 1822; Tabl. 3; Fig. 2H).
Differential species: Warnstora sarmentosa.
Distribution and ecology. These communities occur in
the sou thern part of the TTS on the Gydansky Peninsula
and in the STS on the Tazovsky Pe nin sula. They were re-
cor ded within an altitude range of 21 to 44 m a.s.l. in water
log ged habitats at the bottoms of hol lows between hills,
on drained lakebeds or in thermocarst thaw troughs on
water sheds. The soils with approximately 15 cm thick peat
horizon, water-soaked, on sandy deposits.
Structure and composition. The stands have two vertical
layers: Carex stans dominates in the upper one, which height
is 30–35 cm and cover up to 80 %; Warnstora exannulata,
W. sarmentosa and Straminergon stra mi neum are predominant
in the ground layer which cover varies from 40 to 100 %.
Overview of the syntaxonomical
diversity of the Tazovsky Peninsula and
the prodromus of vegetation
For the rst time, for the STS on the Tazovsky Penin
su la, the syntaxonomic diversity is described, including 6
as so cia tions, 3 subassociations and 3 variants. Among them
4 as so ciations, 3 subassociations and 3 variants are nov.
hoc. loco. The subass. Hierochloo alpinae–Hylocomietum splen-
den tis em pet retosum subholarctici with 2 variants the typicum and
the Aco no gonon ochreatum are wide-spread and occupy the
most drai ned parts of the watershed hills and their edges.
The as so ciation Dicrano maji–Salicetum lanatae is common
in the stu dy area but occupy relatively small areas on the
slopes of watersheds and hollows between them. The as-
so ciation Sphag no girgensohnii–Betuletum nanae was relatively
ra ri ly found, main ly on the gently sloping lake terraces. The
tussock tund ra Empetro subholarctici–Eriopho re tum vaginati and
the sedge-Sphag num mires Eriophoro leiocarpi–Caricetum ro-
tun datae are the parts of polygonal tundra-mire complexes
on the at water sheds. The sedgemoss fens (subass. Carici
stantis–Warn stor etum exannulatae warnstoretosum sarmentosae)
in lake dep res sions and hollows betwen hills are rather
com mon in the area.
A hyerarchy of the syntaxonomical system of vegetation
of the Tazovsky Peninsula is represented in the following
prodromus:
Class
Order
Alliance
Suballiance
Association
Subassociation
Variant
Loiseleurio procumbentis–Vaccinietea Eggler ex
Schubert 1960
Deschampsio exuosae–Vaccinietalia myrtilli Dahl 1957
Loiseleurio–Arctostaphylion Kalliola ex
Nordhagen1943
Hierochloo alpinae–Hylocomietum splendentis
Telyatnikov et al. 2019
empetretosum subholarctici Khitun subass.
nov. hoc loco
typicum Khitun var. nov. hoc loco
Aconogonon ochreatum Khitun var. nov.
hoc loco
? Unknown class
? Unknown order
? Unknown alliance
Dicrano maji–Salicetum lanatae Khitun ass.
nov. hoc loco
Oxycocco-Sphagnetea Br.Bl. et Tx. ex Westhoff et al. 1946
Sphagnetalia medii Kästner et Flössner 1933
Rubo chamaemori–Dicranion elongati
O. Lavrinenko et I. Lavrinenko 2015
Sphagno girgensohnii–Betuletum nanae Khitun
ass. nov. hoc loco
Empetro subholarctici–Eriophoretum vaginati
Khitun ass. nov. hoc loco
Scheuchzerio–Caricetea nigrae (Nordh. 1936) Tx. 1937
Scheuchzerietalia palustris Nordh. 1936
Sphagnion baltici Kustova 1987 ex Lapshina 2010
Caricenion rariorae Lavrinenko, Matveyeva et
Lavrinenko 2016
Eriophoro leiocarpi–Caricetum rotundatae
Khitun ass. nov. hoc loco
typicum Khitun subass. nov. hoc loco
caricetosum chordorrhizae Khitun subass.
nov. hoc loco
Drepanocladion exannulati Krajina 1933
Carici stantis–Warnstoretum exannulatae
Lavrinenko, Matveyeva et Lavrinenko 2016
Warnstora sarmentosa Khitun var. nov.
hoc loco
DISCUSSION
In the STS on the Tazovsky Peninsula we found the
same tendencies as in the southern part of the TTS on the
Gydansky Peninsula. (Telyatnikov et al., in press). As ex pec
ted, spotted dwarf shrub-moss tundras with notable par-
ti cipation of forbs (subass. Luzulo tundricolae–Hylocomietum
splendentis empetretosum subholarctici), which are characteristic
for the zonal habitats in the northern part of the TTS on
the Gy dan sky Peninsula, are absent on Tazovsky. On the
Ta zovsky Peninsula, dwarf birch dominated communities
with an abundance of erect dwarf shrubs, sedge (Carex
arc ti sibirica) and well-developed lichen-moss ground layer
with rare frost boil spots occupy zonal habitats on loamy
grounds (Khitun 1989). However, in the studied locality
san dy grounds were absolutely predominant, therefore we
col lec ted not enought relevés corresponding strictly to this
zonal type to describe it here. Instead, psammophitic va-
riants of such communities were present. We assigned them
to the earlier described association Hierochloo alpinae–Hylo co-
49
Botanica Pacica. A journal of plant science and conservaon. 2021. 10(1):37–51
Syntaxonomic diversity of the Tazovsky Peninsula, the Arctic
mie tum splendentis. These phytocoenoses grow on the better
drai ned parts of watershed hills with shallow peaty horizon.
On the poorly drained parts of watershed hills on sandy
loams or loams, where peaty horizon is rather thick, tussock
tundras occur (ass. Empetro subholarctici–Eriophoretum vagi na-
ti). In the southern part of the TTS in the central part of
the Gydansky Peninsula tussock tundra is widespread and
we con sidered it as a zonal community (Telyatnikov et al., in
press). This idea goes back to Gorodkov (1935). Matveyeva
& Zanokha (1986) in their surveys of vegetation in the sou-
thern tundra of the Taimyr Peninsula also referred com mu-
ni ties with abundant Eriophorum vaginatum to the zonal type.
Though tussock tundra is physiognomically very similar
and have similar species composition in various regions,
some regional or local variation is present (Walker et al.
1994). For example, Cassiope tetragona, common in this type
of tundra in Taimyr, was not found in similar habitats in the
West Siberian Arctic. We found some difference in do mi
nant species of Sphagnum mosses. In the central part of the
Gydansky Peninsula, Sphagnum balticum and S. aongstroemii
were dominant in tussock tundra, the latter is also the main
do mi nant in tussock tundra in the STS of Taimyr (Matveeva
& Za nokha 1986). On the Tazovsky Peninsula, Sphagnum
bal ticum and S. lenense dominate in the tussock tundra. In the
stu dy area we found Sphagnum aongstroemii only on the for-
mer lakebeds of drained lakes in the wet sedge-moss mires.
Tussock tundra usually develops on loam and clay
grounds and is characterized by a poorer drainage. However,
in the studied localities sand deposits were widespread, so
san dy loams and sands were underlaying relatively thick or-
ga nic peaty horizons. It is likely that these peat horizons
pro vide the conditions suitable for such communities. The
pre sence of thick peaty horizons is very characteristic of
sub arctic tundra in the West Siberian Arctic (Rebristaya
2013, Khitun 2005). Peaty acidic soils are favourable for ma
ny oligotrophic hypoarctic species, but are an obstacle to the
spread of arctic species southwards (in contrast to Tai myr,
where arctic species are present even in the southern tund-
ra). The absence of arctic species is the main reason that the
species richness of zonal communities in the West Si be rian
Arctic is lower, when compared to Taimyr; and the tus sock
tundras are the poorest of the zonal communities in the re-
gion (by species composition). Only in the subzone of the
arctic tundra, where organic horizons are minimal and mi-
ne ral horizons are close to the surface, we recorded the in-
crease of forb species and zonal communities become one
of the richest by number of species (Khitun 1998, 2005).
In the studied locality, as well as in the localities in the
sou thern part of the TTS on the Gydansky Peninsula,
we did not nd Dryas-dominated communities Dryado
octopetalae–Hylocomietum alaskani (Andreev 1932) Lavrinenko
et Lavrinenko 2018, which was unexpected, taking into ac-
count the widespread sandy grounds. It is probable that
the thick peat horizons and poor drainage, overall, was the
rea son for their absence. In previously studied sites on the
Tazov sky Peninsula Dryas-dominated stands were also rare
(Khitun 1989).
Vegetation in the southern part of the TTS on the Gy-
dan sky and in the STS on the Tazovsky Peninsulas is phy to-
coe nologically linked with the territories located westwards.
Association Carici stantis–Warnstoretum exannulatae is com-
mon with the EastEuropean Arctic but there are no com
mon as sociations with regions located to the east. In the
nor thern part of the TTS on the Gydansky Peninsula, we
dis co vered the opposite trend, nding connections only
with regions located eastward, i.e. Taimyr, East Siberia
(Telyatnikov et al. 2019).
We found a high degree of similarity between
vegetation of Tazovsky and southern part of the TTS of
the Gydansky Pe ninsula. Four of six associations which
we described are common for these territories (Hierochloo
alpinae–Hylocomietum splendentis, Dicrano maji–Salicetum lana tae,
Eriophoro leiocarpi–Caricetum rotundatae, Carici stantis–Warn-
stor etum exannulatae) and only two (Sphagno girgensohnii–Betu-
le tum nanae and Empetro subholarctici-Eriophoretum vaginati)
are specic for the STS on the Tazovsky Peninsula. At the
same time, comparison of the northern part of the TTS
and STS, revealed low similarity with only one association in
common (Hierochloo alpinae–Hylocomietum splendentis).
CONCLUSION
Summarizing the results of our phytosociological re-
search in the Gydansky and Tazovsky Peninsulas, we con-
clude that the results correspond with the statements of
Alexan drova (1980), who wrote that the vegetation of the
nor thern part of the TTS differed notably from the ve ge-
tation of the southern parts of the TTS and of STS. The
two latter are rather similar by species composition and
structure. According to Alexandrova (1980), zonal com mu
nities in the northern belt of the subarctic tundra (coin-
ciding with northern part of TTS) have the features tran-
si tional to the arctic tundra subzone, but the presence of
low shrubs (dwarf birch and willows) is characteristic for
sub arctic tundra. Our data conrm this conclusion.
ACKNOWLEDGEMENTS
The authors are grateful to Transregional Expeditional
Cen ter “Arctica”, Scientic Center of Arctic Studies and
De part ment of Science and Innovations of the Yamal-
Ne nets Autonomous Area for the eld work lo gis tics. We
are very thankful to Dr. Il’ya Zhdanov for iden ti ca tion
of lichens in the eld, to our cartographer Yakov Gu
nin for various help during the eld work and to Ber
nard Steward for improving the English language text.
The work was carried out with funding of the State Task
of the Central Siberian Botanical Garden Siberian Branch
RAS (№ ААААА211210111000076), and with the sup
port of the RFBR (project no 1804 01010 A). Work of
the reseachers of the Komarov Botanical In sti tute RAS was
carried out within the framework of the in sti tute topics №
ААААА191190306900025 and № 1210216001846, and
support of RFBR project no 180560093.
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