1. Network analysis and inter-ecosystem comparison of two intertidal mudflat food webs (Brouage Mudflat and Aiguillon Cove, SW France)
- Author
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Delphine Degré, Delphine Leguerrier, Nathalie Niquil, Centre de Recherche sur les Ecosystèmes Littoraux Anthropisés (CRELA), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Centre National de la Recherche Scientifique (CNRS), and Normandie Université (NU)
- Subjects
0106 biological sciences ,Inverse analysis ,Oceanography ,01 natural sciences ,intertidal environment ,Ecosystem comparison ,Grazing ,network analysis ,geography.geographical_feature_category ,biology ,food web ,Ecology ,Food web ,net ecosystem production ,Europe ,detritus ,inverse analysis ,intertidal mudflat ,Network analysis ,France ,steady-state equilibrium ,primary production ,Intertidal zone ,Western Europe ,Aquatic Science ,010603 evolutionary biology ,bivalve ,Atlantic Coast [France] ,[SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems ,Intertidal mudflat ,ecosystem function ,Ecosystem ,14. Life underwater ,Cove ,Atlantic Coast [Europe] ,geography ,Detritus ,010604 marine biology & hydrobiology ,Estuary ,Bivalvia ,biology.organism_classification ,[SDE.ES]Environmental Sciences/Environmental and Society ,Fishery ,ecosystem comparison ,Atlantic coast ,Environmental science ,coastal zone ,Eurasia ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,mudflat - Abstract
Network analysis was used to analyse steady-state models of the food webs of two intertidat mudflat ecosystems: Aiguillon Cove and Brouage Mudflat, on the South-Western Atlantic Coast of France. The aim was to highlight emergent properties of food-web functioning in these two ecosystems and to compare these properties with other coastal ecosystems. Both ecosystems imported detritus in parallel to a high benthic primary production. They were characterised by a high diversity of resources. Both also exported living material, leading to a high quality production, quantified as export of Exergy. This export was mainly composed of cultivated bivalves during the cold season for Brouage Mudflat, and of the migration of grazing fish in Aiguillon Cove during the warm season. Their internal organization was characterised by short pathways, high recycling, high redundancy and low net ecosystem production, compared to the other systems selected. These characteristics, encountered in many estuaries, presented less extreme values. (c) 2007 Elsevier Ltd. All rights reserved.
- Published
- 2007
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