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| Mcfarlane, Ga; Ware, Dm; Thomson, Re; Mackas, Dl; Robinson, Clk. |
| The west coast of Vancouver Island is one of the most productive fishing grounds off western North America. In 1985, a multi-disciplinary study was initiated to provide long-term physical and biological data from this large marine ecosystem that could be used in the development of management strategies for commercial fish stocks. In this paper we review the physical, biological and fisheries oceanography of this system. We use this information to examine the linkages between these components, particularly changes in abundance of major fish species in relation to physical and biological oceanography. In addition, we present an overview of a model developed to synthesize our current knowledge about this ecosystem and the relative importance of climate... |
| Tipo: Text |
Palavras-chave: Ocean climate; Species interactions; Pacific hake; Pacific herring; Trophodynamics. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00093/20452/18124.pdf |
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| Cresson, Pierre; Chouvelon, Tiphaine; Bustamante, Paco; Bănaru, Daniela; Baudrier, Jerome; Le Loch, Francois; Mauffret, Aourell; Mialet, Benoit; Spitz, Jérome; Wessel, Nathalie; Briand, Marine; Denamiel, Margaux; Doray, Mathieu; Guillou, Gaël; Jadaud, Angelique; Lazard, Coline; Noûs, Camille; Prieur, Solène; Rouquette, Manuel; Saraux, Claire; Serre, Sandrine; Timmerman, Charles-andre; Verin, Yves; Harmelin-vivien, Mireille. |
| Investigating the drivers of fish assemblage trophic structure is a critical question, in order to better understand ecosystem functioning, predict the effects of perturbations and implement integrated management of exploited marine ecosystems. Ecosystemic surveys enabled the determination of the trophic structure of the fish assemblages in three French marine ecosystems, namely the Eastern English Channel, the Bay of Biscay and the Gulf of Lions, through the simultaneous collection of qualitative (stable isotopes and energy content) and quantitative (biomass) data. In the Bay of Biscay and in the Gulf of Lions, pelagic primary production supported at least 80% of the fish biomass production, and explained the dominance of pelagic species, but with... |
| Tipo: Text |
Palavras-chave: Fish community; Trophodynamics; Food webs; Benthic-pelagic coupling. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00629/74120/73562.pdf |
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| Dhurmeea, Zahirah; Pethybridge, Heidi; Langlais, Clothilde; Somes, Christopher J.; Nikolic, Natacha; Bourjea, Jerome; Appadoo, Chandani; Bodin, Nathalie. |
| Albacore tuna (Thunnus alalunga) is a highly economically important species in the western Indian Ocean. However, knowledge of its ecological and nutritional characteristics, essential for proper management of the species, is lacking in the region. The trophodynamics of the Indian Ocean albacore was thus examined using known fatty acid trophic markers (FATMs) of primary producers, nutritional condition indices (NCIs) (omega-3/omega-6 ratio and total fatty acid content (TFA)), and baseline and lipid corrected stable isotope of carbon (δ13Ccorr) and nitrogen (δ15Ncorr), measured in the muscle tissue. We applied generalized additive mixed models to understand the spatiotemporal patterns and drivers of these tracers, taking into consideration several intrinsic... |
| Tipo: Text |
Palavras-chave: Trophodynamics; Phytoplankton; Environmental parameters; Climate change. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00623/73497/72787.pdf |
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