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AN UPDATE ON THE STATUS OF KORRIGUM (Damaliscus lunatus korrigum) AND TIANG (D. l. tiang) IN WEST AND CENTRAL AFRICA

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  • African Protected Areas & Wildlife

Abstract and Figures

Korrigum and tiang were reputedly once the most abundant of any African antelope (Rowland Ward, 1998), living in large numbers from Senegal to the Sudan. Subsequently, the distribution became very discontinuous, and now it is restricted to a few pockets, because of factors such as agricultural encroachment, competition with cattle, expansion of human settlements, desertification and poaching, among others. During 3 years' work studying the diseases of the cattle-wildlife interface in West and Central Africa, numerous observations and additional information (through interviews) were collected about the korrigum and tiang. These are presented here. Additional information on Sudan is also included, as this country was a late addition to the work's operational area. We follow the distinction between korrigum and tiang, as in R.East (The African Antelope Database, 1998) and Kingdon (1998). The borderline between the 2 subspecies is a line from the Chari River to the north, along the Logone River, in western Chad.
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AN UPDATE ON THE STATUS OF KORRIGUM
(Damaliscus lunatus korrigum) AND TIANG (D. l. tiang)
IN WEST AND CENTRAL AFRICA
Bertrand Chardonnet
Korrigum and tiang were reputedly once the
most abundant of any African antelope
(Rowland Ward, 1998), living in large
numbers from Senegal to the Sudan.
Subsequently, the distribution became very
discontinuous, and now it is restricted to a few
pockets, because of factors such as
agricultural encroachment, competition with
cattle, expansion of human settlements,
desertification and poaching, among others.
During 3 years’ work studying the diseases of
the cattle-wildlife interface in West and
Central Africa, numerous observations and
additional information (through interviews)
were collected about the korrigum and tiang.
These are presented here. Additional
information on Sudan is also included, as this
country was a late addition to the work’s
operational area.
We follow the distinction between korrigum
and tiang, as in R.East (The African Antelope
Database, 1998) and Kingdon (1998). The
borderline between the 2 subspecies is a line
from the Chari River to the north, along the
Logone River, in western Chad.
KORRIGUM DISTRIBUTION
Korrigum used to occur from Mauritania and
Senegal to western Chad. It is now restricted
to 2 areas:
WESTERN POPULATION
The area is centred on the network of
Protected Areas covering the southeast of
Burkina Faso, extreme southwest of Niger and
north of Benin, from where vagrants could
reach northern Togo. This area is known as
the Arly-Pendjari-W complex, and extends
over 2.5 million hectares.
BURKINA FASO:
The population’s range comprises Arly Total
Reserve, Pama Faunal Reserve, Singou Game
Ranch, Madjoari Faunal Reserve, Wamou and
Arly Hunting Areas, Kourtiagou Faunal
Reserve, W National Park and Tapoa Djerma
Hunting Area. It can be considered that 95%
of the korrigum’s range in Burkina Faso is
gazetted. Movements to the west of this range
are restricted by the Kompienga Lake, a man-
made lake which is 60 km long, and by human
settlements. Movements to the north are
possible during the rains only (June to
September), but no observations of such
northward movements have been made in
recent years (there have been no observations
of korrigum in the Sirba River area, for
example). This population is the largest of the
3 countries.
NIGER:
The range is restricted to W National Park and
Tamou Faunal Reserve. 100 % of the
korrigum’s range in Niger is therefore
gazetted. Movements in the vicinity of these
gazetted areas are temporarily possible on a
very limited scale. The Niger population is the
smallest of the 3 countries.
BENIN:
The main stronghold of korrigum in Benin is
Pendjari National Park and the adjacent
hunting areas: Pendjari, Atakora and
Konkombri. Korrigum is also reported from W
National Park but there is no reliable report
from Djona Hunting Area. As in Burkina Faso,
it can be considered that 95 % of the range is
gazetted.
The total range as shown on the map (figure
1) is 33,000 sq. km large: this includes rainy
season dispersal areas, while the dry season
range is much smaller.
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FIGURE 1: THE KORRIGUM IN WEST AFRICA
Gazetted areas: 1= W NP (Niger part) ; 2= W NP (Benin part) ; 3= W NP (Burkina Faso part) ;
4= Tamou Faunal Reserve ; 5= Djona Hunting Area ; 6= Atakora Hunting Area (2 parts :
Konkombri and Mekrou) ; 7= Kourtiagou Faunal Reserve (also called : Kondio Hunting Area) ; 8=
Tapoa Djerma Hunting Area ; 9= Pendjari NP ; 10= Pendjari Hunting Area (2 parts : Porga and
Batia) ; 11= Arly Total Reserve and Koakrana Hunting Area ; 12= Madjoari Partial Faunal Reserve,
Konkombouri Hunting Area and a part of Pama South Hunting Area ; 13= Pama Faunal Reserve
(including 4 hunting areas : Pama South, Pama Central-south, Pama Central-north, Pama North),
14= Singou Game Ranch ; 15= Wamou, Pagou & Tandougou Hunting Areas.
EASTERN POPULATION
Korrigum in Central Africa is restricted to
Cameroon, Nigeria and Chad:
CAMEROON:
The stronghold of korrigum in Cameroon,
and therefore in Central Africa, is Waza
National Park, in the Extreme-North
Province. There are some movements by
vagrants between the park and surrounding
areas in Cameroon, on a limited scale, and
Nigeria. The second population occurs in the
Protected Areas complex south of Garoua,
some 200 km to the south. This is a much
more wooded area, and the population is not
as numerous here. Korrigum occurs mainly
in Benue National Park and in the
surrounding hunting areas: from Boumedje
and Lagdo lake to Mayo Oldiri and to the
east in Boubandjida National Park and in
Campement des Rhinos, Mayo Duele,
Sorombéo. From there vagrants move to
Chad. There is no contact between the 2
populations in Cameroon.
NIGERIA:
There is no resident population in Nigeria,
but vagrants occur from neighbouring Waza
National Park and enter Chugurma-Dugurmi
National Park, a part of Chad Lake Basin
National Park, after crossing some non-
gazetted areas.
CHAD:
The korrigum seen in Chad could be
vagrants from Boubandjida National Park,
mainly north of the National Park and to its
east in the Beinamar area.
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The northern range (around Waza NP) is
7,200 sq. km in area, and the southern range
is 18,650 sq. km. Both figures include rainy
season dispersal areas.
FIGURE 2: THE KORRIGUM IN CENTRAL AFRICA
Gazetted areas: 1= Waza NP ; 2= Chugurma-Dugurmi NP ; 3= Binder Lere Faunal Reserve ; 4=
Boubandjida NP ; 5= Benoue NP, 6= Faro NP ; 7= Hunting Areas n° 10 & 11 ; 8= Hunting Areas
Eastern sector : 2,3,7,9,12,17,20,21,23,24,25 ; 9= Hunting Areas Northern sector : n°
8,14,19 ; 10= Hunting Areas Western sector : n°18, 13, 5, 4, 1 ; 11= Hunting Areas Southern
sector : n° 15, 16, 18 bis.
TIANG DISTRIBUTION
Tiang formerly ranged over Chad, CAR,
Sudan, Ethiopia, and northwestern Kenya. In
this paper we consider the situation in Chad
and CAR, with additional information on
Sudan. Kenya and Ethiopia were out of the
range of the study.
CHAD
THE TIANGS range is now restricted to the
south-eastern part of the country, in the basin
of the rivers Bahr Aouk, Bahr Keita and Bahr
Salamat, reaching Manda National Park to the
west, and including Zakouma National Park,
but not north of 12°. This is a large area,
close to 80,000 sq. km, mainly used by
pastoralists. A large part of the area is
gazetted, including the Salamat Faunal
Reserve, Siniaka Minia Faunal Reserve,
numerous hunting blocks, and the Manda
National Park.
CENTRAL AFRICAN REPUBLIC
The range adjoins the range in Chad, in the
northern part of the country. It extends to
the more open and drier regions of CAR, but
not to the very dry Birao area. The main
areas are the plains along the Aouk River,
Bamingui River, Manovo River, Koumbala
River, Gounda River and St Floris plains, the
latter being the former stronghold of tiang in
CAR. They are now found in Aouk-Aoukale
Reserve only in transition. Tiang can be seen
from time to time in other hunting blocks.
They are no longer found in Andre Felix
National Park and surrounding areas, close
to the Sudan border.
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SUDAN
Wildlife management is not a priority under
the current political situation in Sudan, and
has not been since the mid 1980’s.
Therefore, the information available is not
comprehensive, especially for the southern
part of the country. However, through
interviews, and a trip to the Pibor area
(Jonglei State, north west of Boma National
Park) and to Dinder National Park in
December 2002, we were able to collect
some information.
WEST OF THE NILE
In Darfur, tiang were not reported, neither in
the Radom National Park, nor in surrounding
areas (by the tse tse fly control team in
Raga). No information was available from
the Southern National Park, nor from Bahr El
Ghazal or El Buhayrat State.
The tiang distribution range in Chad-CAR is
close to 126,000 sq. km, including dispersal
areas during the rainy season.
FIGURE 3: THE TIANG IN CENTRAL AFRICA
Gazetted areas: 1= Radom NP ; 2= Andre Felix NP ; 3= Yata Ngaya Faunal Reserve ; 4=
Manovo-Gounda-St Floris NP and Ouandjia-Vakaga Faunal Reserve; 5= Aouk-Aoukale Faunal
Reserve ; 6= Aouk Hunting Areas : n° 10, 11,12 ; 7= Bamingui-Bangoran NP & Avakaba
Presidential Reserve ; 8= Vassako-Bolo Total Reserve ; 9= Gribingui-Bamingui Faunal Reserve ;
10= Koukourou-Bamingui Faunal Reserve ; 11= Hunting Areas : n° 20-29, 66,67, 68, 691, Rhino
Sector, surrounding Village Hunting Areas ; 12= Manda NP ; 13= Zakouma NP ; 14= Hunting
Areas, including Salamat Faunal Reserve ; 15= Siniaka-Minia Faunal Reserve.
EAST OF THE NILE
During a short stay in Dinder National Park,
no evidence of tiang was recorded, although
the game warden reported a small population.
During a 2-week journey in Pibor area (Jonglei
state), and despite a recce walk of 100 km in
white-eared kob country, no evidence of tiang
was collected. That fits well with the lack of
observations mentioned by Philip Winter
(Gnusletter, vol.20, number 2) in Boma
National Park. He suggested that migratory
wildlife was adapting by avoiding conflict and
densely populated areas. I feel he is right, and
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I noticed that poachers felt obliged to go far
away from the conventionally described
migration route to find kobs. He was speaking
of a route further west of Boma. I could add:
and south east of Pibor. It was also locally
suggested that some kobs (and tiang?) are
more sedentary along the Ethiopian border
(Gambella complex of gazetted areas).
ABUNDANCE
Estimating abundance of korrigum and tiang is
not an easy task. No specific census has been
carried out for this species, despite some
specific factors which affect the estimation of
its numbers, including:
- Korrigum is difficult to census from the
air because of its greyish colour, which
blends well with the colour of ground,
thickets and woodland. They also mixed
commonly with herds of western/lelwel
hartebeest, and are often overlooked
during aerial censuses, all of the herd
being censused as « hartebeest ».
- Korrigum is difficult to census on foot,
because of its flight distance. During our
work in the Pendjari National Park in
Benin (March 2003), we noticed that
the flight distance (from a vehicle) was
200 m, versus 70 m for roan antelope.
The korrigum’s shy behaviour and large
flight distance make it easily overlooked
during a ground census, not to mention
its possible movement before
observation (which is a pre-requisite
condition) for distance sampling.
- The number of korrigum herds is
commonly not high enough for the
population to be considered
randomized, especially if the census is
performed in April or May (mid to late
dry season), which is the generally
preferred time for counting large
wildlife. Therefore the sample census is
often unsuitable for censusing this
species which occurs in low numbers.
Also, for sampling using distance
software, the number of observations is
typically not high enough to assess the
visibility profile (this requires at least
30, better 60, observations).
From one of our previous studies (Burkina
Faso, 1999), we noticed that it was much
easier and accurate to census korrigum at the
beginning of the rainy season (say, after 200
mm of rain). At that time, it is easy to see the
clean colour of korrigum against the green of
the new grass shots, the population is much
more randomized, and it is less mixed with
hartebeest (perhaps because resources of
grass and water are more abundant).
For example, during 14 and 16.5% aerial
censuses of the same area, done in February
(beginning of the dry season, with many
water pools still present) and July 1999 (after
200 mm of rain), respectively, we noticed the
following differences (table 1).
TABLE 1: COMPARISON OF KORRIGUM BET WEEN FEBRUARY AND JULY IN 1999
February
July
Comparison ratio
Number of observations
3
16
x 5.33
Number of korrigum observed
18
79
x 4.39
Mean size of herd
6.0 + 4.5
4.9 + 1.5
similar
Total estimated population
127 + 96
477 + 143
x 3.75
Confidence interval
+ 75.5 %
+ 30.0 %
: 2.5
Therefore it would be interesting to try to
census this species during the beginning of
the rains, to try to improve the accuracy and
precision of the estimates. For the time being,
it is likely that some censuses performed
during the dry season provide under-
estimates of the true numbers.
KORRIGUM ESTIMATED NUMBERS
BURKINA FASO
Most of the numerous aerial censuses
conducted recently in Burkina Faso during the
dry season have provided only a few
observations of korrigum, with a suggested
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population of 100-150. From these operations,
it was not possible to assess the real size of
the population, and we felt obliged to consider
the July 1999 air census as a basis: 477 +
143 korrigum for the block Pama-Arly-Singou,
excluding W National Park and surrounding
areas. This data is compatible with ground
observations by the professional hunters
working in the block: for example, in Pama
Centre-South Hunting Area, the professional
hunter reported 2 herds of 26 and 17 living
permanently close to his camp (M. Bardet,
personal communication). The korrigum
population is reported as increasing in Pama
Faunal Reserve.
For W National Park and surrounding areas,
no census as such was conducted during the
rainy season, but observations were made.
The Korrigum is readily observed in the
Kourtiagou Faunal Reserve and in the Tapoa
Djerma Hunting Area: respectively 15 and 20
(R. Julia, personal communication). According
to interviews of informed observers, the
population size has been assessed to be near
80 individuals.
BENIN
A previous aerial census observed some
korrigum, but not as many as those seen from
the ground. During 8 days work in the
Pendjari National Park in March 2003, we
recorded 8 sightings numbering 62 korrigum.
The view of the Chief Ecologist of the PNP
(Aristide Tehou, personal communication) is a
population of around 150 korrigum in Pendjari
National Park and surrounding areas. That fits
well with the number derived from aerial
census, if corrected by a factor of 2 to 3.
There is also a small population of korrigum in
the W NP and surrounding areas, but much
lower than in Pendjari NP. A guess could be in
the low dozens.
NIGER
The last two road censuses (conducted in
2001 and 2002) did not record any korrigum
(Salaou Barmou, pers. comm.). However,
korrigum are sometimes observed there, also
during aerial census, and the population could
be estimated in the high dozens.
CAMEROON
The stronghold of Cameroon korrigum is
Waza National Park. The population was
estimated to number 928 during the 1991
census (Tchamba & Elkan, 1995), 1,680 in
1994 (East, 1998), and 1,667 in 1998 after
a line transect survey (S. Adam & A. Gomsé,
pers. comm.). Since then, various estimates
have been given, but numbers were
reported to be decreasing and could now be
anywhere between 1,600 and as low as 800
(A. Nourédine & M. Walter, personal
communication): we could probably give a
current estimate between 800 and 1,600
animals. In the South, there are some
dozens in the Bénoué NP area, but numbers
reportedly are higher in the Boubandjida
area, where a herd of 30-40 is commonly
seen close to the Boubandjida NP main camp
(J.P. Arabeyre, personal communication). A
population in the low hundreds is estimated
in that area: 200-250.
NIGERIA
Some korrigum move from Waza National
Park into Nigeria at certain times of the
year. They cross non-gazetted areas to
reach Chugurma-Dugurmi National Park,
close to the border with Cameroon. The
population is not considered resident, but
vagrant.
CHAD
Korrigum occur close to the Cameroon
border, in the vicinity of Boubandjida
National Park.
None were seen in the Binder-Léré Reserve
during a recent census.
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TABLE 2: ESTIMATED POPULATIONS OF KORRIGUM
Country/Region
Area
Estimated
population
Trend
Method
Burkina Faso
Pama-Arly-Singou
500
S
AS rainy season
W NP & surr. areas
80
S/D
IG
Benin
Pendjari NP & surr. areas
150
I
IG
W NP & surr. areas
20
S/D
IG
Niger
W NP & surr. areas
50
S/D
IG
Western
population
Total
800
S/D
Cameroon
Waza NP
800 to 1,600
D
Line transect,
IG
Bénoué Area
50
D
IG
Boubandjida Area
200
S/I
IG
Chad
Border with Cameroon
V only
?
Interview
Nigeria
Chugurma-Dugurmi NP
V only
?
IG, Interview
Central
population
Total
1,050 to
1,850
D
TOTAL
1,850 to
2,650
D
Note: AS: aerial survey; IG: informed guess; S: stable; D: decreasing; I: increasing; V: vagrant
TIANG ESTIMATED NUMBERS
CHAD
We have considered here 2 different figures:
one is for Zakouma NP, where censuses have
been carried out, and the other is the total
Salamat area (« Greater Salamat »), for which
there is no data.
- The last census in Zakouma NP was
performed in April 2002 (C. Mackie), a
period when the animals are not
randomized in the area, being attracted by
remaining water points. The method was
censusing blocks bordered by rivers,
which could include a bias by recounting
animals crossing the river and therefore
moving from one block to another. The
estimated population in 2002 is 1310 (+
927), (density: 0.43 per sq.km)
contrasting with a previous census
(Dejace et al. 2000) with a population of
2,450 (+ 2,234), while the estimation in
1995 (D.Moksia) was 1100. With such
large confidence limits, it is difficult to
assess a population trend in this well
Protected Area, but it must be kept in
mind that the tiang population moves in
and out the NP limits, and it is therefore
more important to consider the total
numbers within the population’s range.
- The other figure is for the Salamat
Reserve and the Aouk Hunting Areas.
Currently only 2 professional hunters
are operating in 2 concessions at the
very south of the country, along the
Aouk River where there is a far higher
wildlife density. Most of the area is
utilized by pastoralists moving with
cattle herds, and subsequently the
wildlife density is quite low, but at
some times of the year tiang move
into the area in search of grazing.
During the rains, the eastern part of
Zakouma NP is completely flooded,
and wildlife is forced to move outside,
mainly to the north and southwest. No
census has been conducted recently in
the Greater Salamat area, and
estimated populations are just
guesses. The last comprehensive
aerial census was carried out in 1986
(Bousquet et al., 1986) when the
tiang population was estimated to be
1,490 in the Salamat Faunal Reserve,
and 1,600 in the Aouk hunting areas.
The total population estimate for
southern Chad was 3,320, including
230 inside Zakouma NP. During 2
missions in 1999 and 2000 carried out
by J.Thal, he observed several
hundred tiang along the Aouk River.
Therefore the Bahr Aouk population
could be around 500, and these tiang
move sometimes to CAR. It is much
more difficult to make a guess at the
number of tiang in the remaining part
of the Aouk hunting areas and for the
Salamat Faunal Reserve, but the
population is disturbed by many
factors. Probably less than one half of
the 1986 population is still present,
viz., less than 1,500, of which 500
definitely occur along the Aouk River.
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The population of the Aouk River is in
direct contact with the CAR population
of Manovo-Gounda-St Floris NP.
CENTRAL AFRICAN REPUBLIC
The last published aerial census was made in
1995, when the estimated population in
Manovo Gounda St Floris NP was 700. Since
that time populations have decreased, and
perhaps only one half remains. There are
some tiang in the Aouk Hunting Areas and in
the Bamingui Bangoran NP, where the
population could be around 50.
SUDAN
The available information on Darfur (Radom
NP and surrounding areas) doesn’t mention
tiang. There is no available information on
other parts of the range west of the Nile,
which are all under rebel control, except for
the Southern NP where there are no tiang.
East of the Nile, there are some reports of
tiang in Dinder NP, but sightings are really
uncommon. From the interviews done there,
they could number in the very low dozens.
From what I have seen in Pibor area and
reports from Boma, tiang is now uncommon in
these areas where human conflicts disturb
them. No assessment of numbers is possible,
but the population appears to be decreasing.
TABLE 3: ESTIMATED POPULATIONS OF TIANG
Country
Area
Estimated
population
Trend
Method
Chad
Zakouma NP
1,310
S/D
AS end dry season
Salamat Faunal Reserve and
Aouk Hunting areas without
hunting
1,000
D
IG, interview
Bahr Aouk Hunting blocks
500
S/D
IG, field visit
CAR
Manovo-Gounda-St Floris NP
350
D
IG
Aouk Hunting Areas &
Bamingui Bangoran NP
50
D
IG
Sudan
Radom NP
0
Ex ?
IG
Other areas west of the Nile
?
D
Dinder NP
20
D
Interview, field visit
Other areas east of the Nile
?
D
TOTAL
3,230
D
Note: AS: aerial survey; IG: Informed guess; S: stable; D: decreasing;I: increasing; Ex: extinct
CONSERVATION MEASURES TAKEN
BURKINA FASO
For the time being, the korrigum is strictly
protected, and no hunting is allowed. The
protection of the korrigum is performed by
various bodies. In the hunting blocks, anti-
poaching activities are carried out by
Professional Hunters, supported by the
PAUCOF programme (‘Projet d’Appui aux
Unités de Conservation de la Faune’) funded
by the AFD (‘Agence Française de
Développement’) and the FFEM (‘Fonds
Français pour l’Environnement Mondial’), with
various results among the areas. The ECOPAS
programme (‘Ecosystèmes Protégés en
Afrique Sahélienne’), funded by the European
Commission, is working in the transfontier W
NP and the surrounding areas.
BENIN
For the time being, the korrigum is strictly
protected and hunting is not allowed. The
range of the korrigum in Benin is protected by
various programmes, including the Projet
Pendjari’ (funded by the German GTZ and the
French FFEM), which has been very efficient
during the last 2 years in reducing poaching
activities. This is probably the main reason for
the increasing wildlife population, now easy to
observe in the Pendjari NP. Other funders
include:
9
. The European Commission, with the ECOPAS
programme which is mainly working in and
around W NP, &
. SNV (the Dutch cooperation) in surrounding
areas.
NIGER
For the time being, big game hunting is not
allowed in this country. Therefore, korrigum is
legally protected. For the time being, the
korrigum range in Niger is restricted to the
ECOPAS programme working area.
NIGERIA
Big game hunting is not allowed, and
therefore korrigum is legally protected.
CAMEROON
Korrigum is partially protected, and some are
shot during tourist hunting conducted by
Professional Hunters: the allowed quota was 9
in 2002, but only 4 were shot (A.Gomsé,
personal communication). Protection is
effective in most of the hunting blocks, due to
the activities of Professional Hunters, including
anti-poaching teams, some of them involving
villagers. In some areas, cattle breeders,
agricultural encroachment and local poachers
are still a problem. The three national parks
(Boubandjida, Faro and Bénoué) receive some
funding from the EU Programme
d’aménagement de l’Ouest Bénoué. The
« Programme Savane » involving many
sponsors (WWF, SNV -Netherlands-, FAC -
French Ministry of Foreign Affairs-) is now
completed. A small fund from Comité Français
de l’UICN has been made available for rhino
monitoring and anti-poaching activities in the
korrigum range. The northern range (Waza
NP) is now subject to poaching and wildlife
densities are decreasing. It would be of major
significance to fund conservation activities in
this park.
CHAD
It is permitted to hunt tiang in the hunting
areas along the Aouk River. Less than 10 are
shot every year. Zakouma NP is well protected
with the help of the CURESS programme
(Conservation et Utilisation Rationnelle des
Ecosystèmes Sahélo-Soudaniens), funded by
the European Commission. At the moment,
there is no real protection in Salamat Reserve
and most of the hunting areas. Only the
hunting areas along the Aouk River are well
protected by the hunting outfitters, who
support their own anti-poaching teams. A
programme in Manda NP is about to start
(UNDP-GEF), but this Park is marginal for the
tiang population.
CAR
The tiang is partially protected, and hunting is
subject to a quota. Two (2) tiang were allowed
to be hunted in 2003 (Ouandjia Vakaga). The
ECOFAC-ZCV program (‘Zones Cynégétiques
Villageoises’), funded by the European
Commission, is working in the tiang range.
Nevertheless, the funding at the moment is
trapped between 2 administrative phases.
This programme includes some anti-poaching
activities (at both programme and village
levels). Professional Hunters are also
conducting anti-poaching activities.
SUDAN
Official big game hunting is currently closed in
this country. Therefore, the tiang is legally
protected. As mentioned above, it is difficult
to obtain information from the field, especially
from the south. During our visit in December
2002 to the Pibor area, no protection activities
were evident. Some basic activities are being
carried out in Boma NP, further to the
southeast. In the government-controlled area
of Sudan, Radom NP is no longer within the
tiang’s range, but the level of conservation
activities in Dinder NP was very good in the
core area of the NP when visited at the end of
2002.
CONCLUSION
There are now only 4 remaining Damaliscus
populations in West and Central Africa: 3 for
korrigum, with a total of 1,850 to 2,650, and
only one for tiang numbering 3,200.
Information is lacking for Sudan, but
populations could be strongly decreasing, and
viability could be a problem.
The range of both sub-species exceeds 18
million hectares, for a population of only
5,050 antelopes (possibly 5,850), over 7
countries. The global population trend is
decreasing.
10
TABLE 4: ASSESSMENT OF THE CURRENT GLOBAL POPULATION OF KORRIGUM AND TIANG
Population
Sub-
species
Estimate
number
Countries
involved
Area
sq.km
Density
n/km²
Status
Arly-Pendjari-W
Korrigu
m
800
Burkina Faso,
Niger, Benin
33,000
0.024
S/D
Waza NP
Korrigu
m
800-1,600
Cameroon,
Nigeria
7,200
0.11-
0.22
D
Bénoué-
Boubandjida
Korrigu
m
250
Cameroon, Chad
18,650
0.013
S
Aouk-Salamat-
Zakouma-Manovo
Gounda St Floris
Tiang
3,200
Chad - CAR
126,000
0.025
S/D
TOTAL
Korrigu
m &
tiang
5,050 to5,850
7 countries
184,850
0.027
D
It is important to note that these 4
populations occur in what are probably the
4 most important ecosystems for wildlife
conservation in West and Central Africa. The
size of the range is huge, and this species is
very much conservation dependent, its
stronghold being in the better protected
gazetted areas (like Pendjari NP, Zakouma
NP). Where the population is decreasing,
urgent funding of conservation activities is
needed, e.g., in Waza NP.
Korrigum and tiang are highly mobile
antelopes and any conservation action should
include activities aimed at the conservation of
their entire range. These antelopes are not
only a flagship of successful conservation
inside the best Protected Areas, but also of
sustainable conservation of the global range,
including rangelands adjoining National
Parks.
Figure 4: Estimated numbers of Korrigum and Tiang populations in West and Central Africa
11
FIGURE 4: OVERVIEW OF DISTRIBUTION AND NUMBER OF KORRIGUM AND TIANG
ACKNOWLEDGEMENTS
We would like to thank all of the persons met during 3 years field work who have provided valuable
information on korrigum and tiang status, and especially :
Burkina Faso: P. Rouamba, N. de Lesguern, M. Bardet, R. Julia
Benin: A. Téhou, S. Mama Gao, C. Morio, Y. Le Bouvier
Niger: M. Salaou Barmou, H. Boulet
Nigeria: A. Mohammed, D. Ishaya Tsok, G.G. Vincent, A. Mbaya
Cameroon: Assan Gomsé, M. Tiran, J.P. Arabeyre, A. Nourédine, M. Walter, P. Bour, Seini
Ndjobdi, A. B. Hamayero, Saleh Adam, J. Thal.
Chad: E. Boulanodji, L. Arranz, D. Moksia, A. Lefol, F. Marotteau, N. Chai, J. Thal
CAR: H. Boulet, R. Lubin, J. Tello, J. Ndobalet, C. Serenam, M. Chaillol
Sudan: O. Yabang Lo-Lujo, Khamis Adiang, Tse tse fly control service (Raga, Bahr El Ghazal)
REFERENCES
Bousquet et al., 1986. Projet de Conservation du patrimoine faunique en zone sud-est, Tchad.
SECA-CCE.
Chardonnet B., P. Rouamba, I. Barry, A. Ouedraogo & P. Nacoulma, 1999. Suivi écologique aérien
des aires classées des bassins de l'Arly et du Singou, FFEM/FAC/AFD, 124 p.
East, R., 1999. African Antelope Database 1998. IUCN/SSC Antelope Specialist Group. IUCN, Gland,
Switzerland and Cambridge, UK. X + 434pp.
Kingdon, J., 1998. The Kingdon field guide to African mammals.
Rowland Ward, 1998. Records of big game.
Tchamba, M. & P. Elkan, 1995. Status and trends of some large mammals and ostriches in Waza
National Park, Cameroon, Afr..J. Ecol., Volume 33, pages 366-376.
12
ResearchGate has not been able to resolve any citations for this publication.
Article
This field guide begins with a checklist. The main part of the volume consists of entries for each species. Each entry provides information on common names, measurements, recognition, geographical distribution (plus map), habitat, diet, behaviour, adaptations and conservation status. Illustrations are also included. Brief notes are also provided on the African environment (physical, climate and vegetation) and palaeoecology (habitats and species). Finally a short section examines African wildlife conservation.
Article
An aerial sample count of large mammals and ostriches was carried out in the Waza National Park, Cameroon, using systematic transect sampling. Total population estimates are given and distribution maps are presented for seven species. Results are compared with three previous estimates. Population sizes of giraffe, roan antelope, and topi showed a limited increase since 1977. Rather surprisingly, the population of kobs, the most abundant larger herbivore, had increased dramatically. Red-fronted gazelle and ostrich seemed to maintain their stock. Elephants showed a significant increase of 9·3% per annum since 1977. It is recommended that quantitative data be collected on the increasing elephant crop damages and that measures be taken to limit human/elephant conflicts. The Acacia seyal zone appeared to be an important wildlife habitat. It is suggested that this habitat should be permanently monitored given the increase in wildlife numbers and the changes in local hydrological conditions. The cost of the aerial survey was about US$2·30 per km2, a quite expensive operation for local low-budget Wildlife Department and Research Institutes. On a effectué un dénombrement aérien échantillon des grands mammiféres et des autruches dans le Parc National de Waza en utilisant un échantillonnage systématique par transect. On présente les estimations totales des populations et des cartes de distribution de sept espèces. On compare les résultats avec trois estimations antérieures. Les effectifs des girafes, des hippotragues et des topis (damalisques) montraient une croissance modérée depuis 1977. Il était plus étonnant de constater que la population de cobes de Buffon, les grandes herbivores les plus abondants du parc, avait augmenté de façon spectaculaire. Les nombres de gazelles à front rouge et d'autruches semblaient stationnaires. Les éléphants présentaient une augmentation significative de 9,3% par an depuis 1977. On recommande de rassembler des données chiffrées sur les dommages croissants que les éléphants infligent aux récoltes et de prendre les mesures nécessaires pour limiter au mieux les conflits hommes-éléphants. La zone àAcacia seval semblait être un habitat important pour la faune. On suggère de surveiller cette zone en permanence etant donne I'accroissement du nombre d'animaux sauvages et les changements des conditions hydrologiques locales. Le coût de la recherche aérienne s'est élevé aux environs de 2,30 dollars par km2, une opération plutôt onéreuse pour le budget limité du Département de la Faune et des instituts de recherches nationaux.
Projet de Conservation du patrimoine faunique en zone sud-est
  • Bousquet
Bousquet et al., 1986. Projet de Conservation du patrimoine faunique en zone sud-est, Tchad. SECA-CCE.