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| Reecht, Yves; Rochet, Marie-joelle; Trenkel, Verena; Jennings, S.; Pinnegar, J. K.. |
| An ecomorphological method was developed, with a focus on predation functions, to define functional groups in the Celtic Sea fish community. Eleven functional traits, measured for 930 individuals from 33 species, led to 11 functional groups. Membership of functional groups was linked to body size and taxonomy. For seven species, there were ontogenetic changes in group membership. When diet composition, expressed as the proportions of different prey types recorded in stomachs, was compared among functional groups, morphology-based predictions accounted for 28-56% of the interindividual variance in prey type. This was larger than the 12-24% of variance that could be explained solely on the basis of body size. (C) 2013 The Fisheries Society of the British Isles |
| Tipo: Text |
Palavras-chave: Ecomorphology; Functional traits; Predation strategy; Trophic functions. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00152/26294/24831.pdf |
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| Gourguet, Sophie; Thebaud, Olivier; Dichmont, C.; Jennings, S.; Little, L. R.; Pascoe, S.; Deng, R. A.; Doyen, L.. |
| Balancing bio-economic risks and high profit expectations is often a major concern in fisheries management. We examine this trade-off in the context of the Australian Northern Prawn Fishery (NPF). The fishery derives its revenue from different prawn species with different dynamics and recruitment processes. A multi-species bio-economic and stochastic model is used to examine the trade-offs between mean profitability of the fishery and its variance, under a range of economic scenarios, fishing capacities and distributions of fishing effort across the various sub-fisheries that comprise the NPF. Simulation results show that the current fishing strategy diversifying catch across sub-components of the fishery entails a compromise between expected performance... |
| Tipo: Text |
Palavras-chave: Bio-economic modelling; Uncertainty; Risk-performance trade-offs; Fishing strategy; Northern Prawn Fishery. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00216/32775/31320.pdf |
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