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| Read, Andrew J; Duke University; aread@duke.edu; Brownstein, Carrie R; Duke University; cbrownstein@audubon.org. |
| After decades of overexploitation and severe depletion, Atlantic herring stocks in waters of the northeastern United States have recovered. Fishery managers now consider the herring resource to be underexploited. Nevertheless, some fishery managers and sustainable fishery advocates in New England have expressed concern that the fishery management plan may not adequately consider the importance of herring as prey for marine mammals, seabirds, and piscivorous fish. Several studies suggest that consumption by these predators is significant, yet trophic interactions are not explicitly considered in stock assessment models. Instead, as in most fisheries stock assessments, predation is subsumed within the natural mortality rate, and no empirical estimates of... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Atlantic herring; Ecosystem management; Fisheries management; Gulf of Maine; Marine mammals; Piscivores; Protected species; Single-species approach; Stock assessment; Trophic interactions. |
| Ano: 2003 |
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| Huret, Martin; Runge, J; Chen, Claude; Cowles, G; Xu, Q; Pringle, J. |
| As an initial step in establishing mechanistic relationships between environmental variability and recruitment in Atlantic cod Gadhus morhua along the coast of the western Gulf of Maine, we assessed transport success of larvae from major spawning grounds to nursery areas with particle tracking using the unstructured grid model FVCOM (finite volume coastal ocean model). In coastal areas, dispersal of early planktonic life stages of fish and invertebrate species is highly dependent on the regional dynamics and its variability, which has to be captured by our models. With state-of-the-art forcing for the year 1995, we evaluate the sensitivity of particle dispersal to the timing and location of spawning, the spatial and temporal resolution of the model, and... |
| Tipo: Text |
Palavras-chave: Meso scale processes and turbulence; Spawning grounds; Modeling sensitivity; Particle dispersal; Larval transport; Gadhus morhua; Atlantic cod; Gulf of Maine. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3566.pdf |
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| Tsontos, Vm; Kiefer, Da. |
| Central to the development of an inventory of marine life and improved conceptual understanding of the mechanisms that dynamically shape species distribution patterns is the implementation of strategies aimed at enhancing assimilation and access to existing biogeographical information. Using the Internet as a medium, the Gulf of Maine Biogeographic Information System (GMBIS) project provides a framework and a set of reusable tools for the integration, visualization, analysis and dissemination of diverse types of biogeographical and oceanographic information. End-to-end viability of this approach is demonstrated in the context of a series of scientific storylines and a pilot application for the Gulf of Maine (GoM), a well-studied ecosystem that has been... |
| Tipo: Text |
Palavras-chave: Système d'information; Biogéographie; Biodiversité; Golfe du Maine; Information system; GIS; Biogeography; Biodiversity; Gulf of Maine. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00322/43302/43038.pdf |
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