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1 Angelica heterocarpa distribution. The black dots indicate the presence in France, dots with question mark indicate the probable presence
Source publication
This study aims to characterize the ecology, behavior and responses of Angelica heterocarpa up to the level of the vegetation series and of the human modification of its habitats, in the Loire estuary. Original observations and an extensive bibliography review follows. Angelica heterocarpa is classified as a Sublittoral Eu-Atlantic (Franco-Atlantic...
Citations
... This can therefore be useful for the observation and study of those dynamics that elsewhere (in the zonal formations) can occur much more slowly and with greater difficulty (even after many centuries). These riparian forests can therefore become a sort of model on which to observe and study forests' ecological and environmental dynamics and on which to think of proposals for active management or passive conservation [228]. ...
This paper is a synthetic overview of some of the threats, risks, and integrated water management elements in freshwater ecosystems. The paper provides some discussion of human needs and water conservation issues related to freshwater systems: (1) introduction and background; (2) water basics and natural cycles; (3) freshwater roles in human cultures and civilizations; (4) water as a biosphere cornerstone; (5) climate as a hydrospheric 'game changer' from the perspective of freshwater; (6) human-induced stressors' effects on freshwater ecosystem changes (pollution, habitat fragmentation, etc.); (7) freshwater ecosystems' biological resources in the context of unsustainable exploitation/overexploitation; (8) invasive species, parasites, and diseases in freshwater systems; (9) freshwater ecosystems' vegetation; (10) the relationship between human warfare and water. All of these issues and more create an extremely complex matrix of stressors that plays a driving role in changing freshwater ecosystems both qualitatively and quantitatively, as well as their capacity to offer sustainable products and services to human societies. Only internationally integrated policies, strategies, assessment, monitoring, management, protection, and conservation initiatives can diminish and hopefully stop the long-term deterioration of Earth's freshwater resources and their associated secondary resources.
... Sur la plaine alluviale, les changements de végétation et l'évolution de la salinité peuvent menacer certaines espèces rares par la suppression ou la réduction des milieux favorables à leur développement. L'Angélique des estuaires, espèce végétale endémique des estuaires atlantiques français, pourrait ainsi être menacée par les effets du changement climatique qui seraient susceptibles de compromettre sa conservation à long terme (Magnanon et al., 1998, Cianfaglione et Bioret, 2017. ...
... Macrophytes are used successfully in good long time monitoring of ecologic variations, because they are char- acterized by low mobility (if compared with phytoplank- ton, fishes or invertebrates), and also in a relative short time monitoring because they are closely linked to biodi- versity and the environmental conditions ( Botineau and Ghestem, 1995;Van der Molen et al., 2004;Kolada, 2008;Cianfaglione, 2011;Khadija et al., 2015;Bolpagni et al., 2016aBolpagni et al., , 2016b). They are widely used for the aquatic ecosystems assessment, integrating the environmental changes in their frequency, communities structure, phe- nological rhythm, development (functional traits s.l.), vegetation series and dynamical tendencies (Carvalho et al., 2006;Ali et al., 2007;Feldmann and N?ges, 2007;Sender, 2016;Cianfaglione and Bioret, 2017). For that, macrophytes indices are generally related to the compo- sition, frequency, abundance and presence of specific taxa (Spence, 1967;Suominen, 1968;Newbold and Holmes, 1987;Murphy et al., 1990;Whitton and Kelly, 1995). ...
A new multi-criteria method of evaluation and assessment of the ecological status of lakes is proposed. It is based on macrophytes analysis integrated with geomorphological, landscape and catchment sources of threats. A total of 22 lakes in the Transboundary Biosphere Reserve 'West Polesie' (Poland) were investigated along trophic (available nutrients) and human pressure gradients, testing the proposed method with ESMI and TRS indices. Therefore, the present indexation included 22 criteria (i.e., catchment land use, phytolittoral area, number of plant species) concerning three different assessing zones (lakeshore, littoral and surrounding area), and provided a five-class ecological classification. The proposed index, in addition to the general ecological www.jlimnol.it conditions assessment of lakes, allows to point out a zonal evaluation, identifying the most critic zones in terms of ecological status. The proposed method can be universally adapted for any type of lakes, regardless of their geographical characteristics. It can be applied to system monitoring, and to support lakes biodiversity, functionality, conservation, restoration, water protection and uses, as well as water, territory and landscape management actions.
Angelica (Apiaceae) is a large complex genus with high morphological diversity. The many taxonomic treatments explain the controversy regarding the number of European species, which range from four to ten. Molecular methods have unraveled the complicated Asian and American taxonomies; however, no comprehensive molecular study has been conducted on the European taxa. We aim to determine the number of different European Angelica s.l. taxa and their relationship within the Selineae tribe by conducting Maximum Likelihood (ML) and Bayesian Inference (BI) analyses based on the nuclear Internal Transcribed Spacer (ITS) and haplotype networks by Templeton Crandall and Sing and neighbour-net analyses based on the plastid trnL. Three separate Iberian species (A. angelicastrum, A. razulii, and A. pyrenaea) form the new Iberian Angelica clade, which is sister to the Archangelica clade. Although morphologically different, A. pachycarpa cannot be differentiated from A. angelicastrum by molecular methods, casting new doubts on the existing taxonomies. Molecular evidences suggest that A. heterocarpa should be considered an estuary forma of A. sylvestris. The east and west A. sylvestris subclades support the subspecies A. sylvestris subsp. elatior and A. sylvestris subsp. villosa (including A. heterocarpa). Our evidences support the classification of A. palustris as Ostericum palustre.
L’inventaire et la cartographie des habitats sont des processus essentiels pour la mise en œuvre des politiques de conservation de la nature. Les méthodes actuelles, basées sur des prospections de terrain, sont difficilement applicables sur de vastes territoires et jugées inadaptées à un suivi régulier et harmonisé des habitats. L’objectif de cette thèse est d’explorer des approches innovantes afin de faciliter l’inventaire et la cartographie des habitats sur de grands sites naturels, en prenant comme cas d’étude le site Natura 2000 ‘Estuaire de la Loire’.
Un système expert a été développé pour l’identification de relevés phytosociologiques afin
d’établir la typologie des habitats du site. Cette démarche a permis de rattacher de manière formelle 1843 relevés de végétation à 89 habitats EUNIS et 17 habitats d’intérêt communautaire.
Des images satellites Sentinel-2 et des données aéroportées hyperspectrales et LiDAR ont été exploitées pour spatialiser les habitats du site par télédétection. Ces différentes données, aux caractéristiques complémentaires (résolutions spatiales, résolutions spectrales, répétitivité, 3D), ont permis de cartographier avec une très grande précision la majorité des habitats des 24 000 ha de l’estuaire de la Loire.
L’application de ces nouvelles approches démontre l’intérêt d’associer les systèmes experts et la télédétection pour typifier et cartographier des habitats de façon rentable et reproductible favorisant une gestion concertée du site Natura 2000.
