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| Hoffle, Hannes; Van Damme, Cindy J. G.; Fox, Clive; Lelievre, Stephanie; Loots, Christophe; Nash, Richard D. M.; Vaz, Sandrine; Wright, Peter J.; Munk, Peter. |
| Previous studies have shown that four commercially important demersal species, namely cod (Gadus morhua), haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus) and plaice (Pleuronectes platessa) spawn in distinct areas across the North Sea. Based on two comprehensive ichthyoplankton surveys in 2004 and 2009, the present study uses Generalized Additive Mixed Models (GAMMs) to delimit these spawning grounds using the distribution of recently spawned eggs, investigates their relationship to specific environmental conditions and examines egg dispersal during their development. Results indicate that presence/absence of early stage eggs is more related to temporal and topographic variables, while egg densities are closely linked with hydrography.... |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00385/49641/50157.pdf |
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| Hill, Simeon L.; Hinke, Jefferson; Bertrand, Sophie; Fritz, Lowell; Furness, Robert W.; Ianelli, James N.; Murphy, Matthew; Oliveros‐ramos, Ricardo; Pichegru, Lorien; Sharp, Rowland; Stillman, Richard A.; Wright, Peter J.; Ratcliffe, Norman. |
| Ecosystem‐based management of fisheries aims to allow sustainable use of fished stocks while keeping impacts upon ecosystems within safe ecological limits. Both the FAO Code of Conduct for Responsible Fisheries and the Aichi Biodiversity Targets promote these aims. We evaluate implementation of ecosystem‐based management in six case‐study fisheries in which potential indirect impacts upon bird or mammal predators of fished stocks are well publicized and well studied. In particular, we consider the components needed to enable management strategies to respond to information from predator monitoring. Although such information is available in all case‐studies, only one has a reference point defining safe ecological limits for predators and none has a method to... |
| Tipo: Text |
Palavras-chave: Adaptive management; Aichi Biodiversity Targets; Ecosystem interactions; Indirect impacts; Management strategy; Precautionary approach. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00602/71400/69850.pdf |
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