A food web model for the Baffin Bay coastal and shelf ecosystem. Part 1 : Ecopath Technical Report

This work was undertaken as part of a multidisciplinary research project funded by the Marine Observation Prediction and Assessment Network - MEOPAR (at ULaval), Canadian Institute of Health Research – CIHR (at University of Ottawa), and Sentinel North (at ULaval), and hosted at Université Laval, in Canada. The objective of the overall project is to support the food security (i.e., the availability and access to sufficient, safe, nutritious food that meets dietary preference) of Inuit communities of the Eastern Canadian Arctic, as well as to explore ways to adapt to effects of climate change. Inuit fish and hunt local marine species, from invertebrates to fish and marine mammals, which make a large part of their diet and are central to their food security. With temperatures increasing twice as fast as the global average and sea ice becoming thinner and forming later, climate change effects on the distribution and abundance of Arctic marine species are already taking place. To better understand the effects of climate change in important subsistence species, a multi-species model (Ecopath with Ecosim) will be used to inform the development of an integrated ecosystem assessment. The model will be used as a tool to co-create scenarios of ecosystem change with the community of Qikiqtarjuaq, Nunavut, to inform adaptation strategies regarding food security (e.g., potential of new fisheries in the region). This report describes the development of an Ecopath model of the Baffin Bay coastal and shelf ecosystem. The methodology, data used to construct the model, data gaps and limitations are described

Etudes sur la structure des populations de poissons, leurs interactions trophiques et leur gestion dans le lac d'Annecy

The thesis focuses on different aspects of management and ecology of commercially important fish species in Lake Annecy: an oligotrophic lake situated in Rhône-Alpes region of France. The main objectives of the study were to evaluate the fisheries data, growth of whitefish and Arctic char in Lake Annecy, study the trophic interactions in food web and to propose a trophic model for the lake using Ecopath with Ecosim (EwE) software using data collected mostly during the last 10 years from commercial and recreational fisheries monitoring . Fish monitoring data was found to be effective for management purpose. Growth of whitefish was found to be fluctuating during last 20 years. Food resources appeared to be partitioned among the Lake Annecy fish community during summer possibly limiting competitive interactions. The results from Lake Annecy trophic analysis including showed that fishery in Lake Annecy is sustainable at the present exploitation rate. Few conclusions were proposed for the fisheries management based on the results.CHAMBERY -BU Bourget (730512101) / SudocSudocFranceF