Zobrazeno 1 - 10
of 31
pro vyhledávání: '"William J. Overholtz"'
Publikováno v:
Marine Ecology Progress Series. 459:247-258
We developed surplus production models for 12 demersal fish species in the Gulf of Maine at the single-species and aggregate-species levels. Summed single-species production model reference points were higher than estimates from the aggregate surplus
Autor:
Nancy L. Shackell, Daniel E. Duplisea, Alida Bundy, John P. Manderson, Jon Hare, Mariano Koen-Alonso, William J. Overholtz, Jason S. Link, Kevin D. Friedland
Publikováno v:
Fish and Fisheries. 12:152-170
The northwest Atlantic has had a notable history of living marine resource (LMR) exploitation. There have been calls for evaluating and improving approaches to manage those resources as stocks have undergone sequential depletion, with some dramatic i
Publikováno v:
ICES Journal of Marine Science. 67:617-627
Richardson, D. E., Hare, J. A., Overholtz, W. J., and Johnson, D. L. 2010. Development of long-term larval indices for Atlantic herring (Clupea harengus) on the northeast US continental shelf. – ICES Journal of Marine Science, 67: 617–627. The in
Publikováno v:
Marine Ecology Progress Series. 393:111-129
We tested the hypothesis that recent oceanographic changes associated with climate change in the Northeast United States continental shelf ecosystem have caused a change in spatial distribution of marine fish. To do this, we analyzed temporal trends
Autor:
Jason S. Link, William J. Overholtz
Publikováno v:
Ecological Modelling. 220:2491-2502
A dynamic simulation model was constructed using outputs from a balanced Gulf of Maine (GOM) energy budget model as the initial parameter set. The model was structured to provide a recipient control set of dynamics, largely based off of flows to and
Autor:
Jannike Falk-Petersen, Kevin D. Friedland, Georg Skaret, William T. Stockhausen, Harald Gjøsæter, Jason S. Link, Bernard A. Megrey, Sarah Gaichas, William J. Overholtz, Kerim Aydin, Are Dommasnes
Publikováno v:
Progress in Oceanography. 81:47-62
Energy budget models for five marine ecosystems were compared to identify differences and similarities in trophic and community structure. We examined the Gulf of Maine and Georges Bank in the northwest Atlantic Ocean, the combined Norwegian/Barents
Autor:
Georg Skaret, Are Dommasnes, William J. Overholtz, Kevin D. Friedland, Harald Gjøsæter, Bernard A. Megrey, William T. Stockhausen, Jonathan A. Hare, Jannike Falk-Petersen, Sarah Gaichas, Jason S. Link
Publikováno v:
Progress in Oceanography. 81:63-92
Temporal and spatial patterns of recruitment (R) and spawning stock biomass (S) variability were compared among functionally analogous species and similar feeding guilds from six marine ecosystems. Data were aggregated into four regions including the
Autor:
Jason S. Link, Harald Gjøsæter, Georg Skaret, Bernard A. Megrey, Jonathan A. Hare, William J. Overholtz, Jannike Falk-Petersen, Sarah Gaichas, Are Dommasnes, Franz J. Mueter, Kevin D. Friedland, Joseph Kane, William T. Stockhausen
Publikováno v:
Progress in Oceanography. 81:29-46
Major features of four marine ecosystems were analyzed based on a broad range of fisheries-associated datasets and a suite of oceanographic surveys. The ecosystems analyzed included the Gulf of Maine/Georges Bank in the Northwest Atlantic Ocean, the
Autor:
Jason S. Link, Debra L. Palka, Jack Green, William J. Overholtz, Carolyn A. Griswold, Laurel A. Col, Joseph J. Vitaliano, Kevin D. Friedland, Michael J. Fogarty, Vincent G. Guida, John E. O'Reilly, Christopher M. Legault, David D. Dow
Publikováno v:
Ecological Modelling. 220:351-369
Exploring the response of an ecosystem, and subsequent tradeoffs among its biological community, to human perturbations remains a key challenge for the implementation of an ecosystem approaches to fisheries (EAF). To address this and related issues,
Publikováno v:
ICES Journal of Marine Science. 66:445-454
Moustahfid, H., Link, J. S., Overholtz, W. J., and Tyrrell, M. C. 2009. The advantage of explicitly incorporating predation mortality into age-structured stock assessment models: an application for Atlantic mackerel. – ICES Journal of Marine Scienc