Atlantic menhaden (Brevoortia tyrannus) support the largest fishery by volume on the United State... more Atlantic menhaden (Brevoortia tyrannus) support the largest fishery by volume on the United States East Coast, while also playing an important role as a forage species. Managers’ and stakeholders’ increasing concerns about the impact of Atlantic menhaden harvest on ecosystem processes led to an evolution in the assessment and management of this species from a purely single-species approach to an ecosystem approach. The first coastwide stock assessment of Atlantic menhaden for management used a single-species virtual population analysis (VPA). Subsequent assessments used a forward projecting statistical catch-at-age framework that incorporated estimates of predation mortality from a multispecies VPA while analytical efforts continued toward the development of ecosystem models and explicit ecological reference points (ERPs) for Atlantic menhaden. As an interim step while ecosystem models were being developed, a series of ad hoc measures to preserve Atlantic menhaden biomass for predat...
Federal mandates have been established in US law that demand consideration of ecosystem effects (... more Federal mandates have been established in US law that demand consideration of ecosystem effects (reauthorized Magnuson-Stevens Act, National Environmental Protection Act, Marine Mammal Protection Act, Endangered Species Act) when making fishery management decisions. Likewise, coastal states, interstate fishery commissions, and fishery management councils also recognize ecosystem concerns in their shared goal of long-term sustainability of their fisheries and many now explicitly consider ecosystem concerns. However, what information to include in management decisions and how to include it is far from clear in existing mandates, and practices for taking an ecosystem approach to management vary widely around the US. In a round-table format during the last two speaker slots for the day, managers and modelers from today's symposium discuss what approaches to ecosystem management of fishery resources have worked (or, have not) in different regions of the US and abroad.
Federal mandates have been established in US law that demand consideration of ecosystem effects (... more Federal mandates have been established in US law that demand consideration of ecosystem effects (reauthorized Magnuson-Stevens Act, National Environmental Protection Act, Marine Mammal Protection Act, Endangered Species Act) when making fishery management decisions. Likewise, coastal states, interstate fishery commissions, and fishery management councils also recognize ecosystem concerns in their shared goal of long-term sustainability of their fisheries and many now explicitly consider ecosystem concerns. However, what information to include in management decisions and how to include it is far from clear in existing mandates, and practices for taking an ecosystem approach to management vary widely around the US. In a round-table format during the last two speaker slots for the day, managers and modelers from today's symposium discuss what approaches to ecosystem management of fishery resources have worked (or, have not) in different regions of the US and abroad.
Federal mandates have been established in US law that demand consideration of ecosystem effects (... more Federal mandates have been established in US law that demand consideration of ecosystem effects (reauthorized Magnuson-Stevens Act, National Environmental Protection Act, Marine Mammal Protection Act, Endangered Species Act) when making fishery management decisions. Likewise, coastal states, interstate fishery commissions, and fishery management councils also recognize ecosystem concerns in their shared goal of long-term sustainability of their fisheries and many now explicitly consider ecosystem concerns. However, what information to include in management decisions and how to include it is far from clear in existing mandates, and practices for taking an ecosystem approach to management vary widely around the US. In a round-table format during the last two speaker slots for the day, managers and modelers from today's symposium discuss what approaches to ecosystem management of fishery resources have worked (or, have not) in different regions of the US and abroad.
Recreational and commercial fisheries experience continued restrictions due to high levels of fis... more Recreational and commercial fisheries experience continued restrictions due to high levels of fishing mortality and slow stock rebuilding. Moreover, discard of bycaught fish occurs in almost all fisheries, and stakeholders have sought solutions to barotrauma and discard mortality problems. Managers and scientists face data gaps in determining how discard mortality rates affect stock status and fishing levels. In 2013, NMFS began to develop a paper to review discard mortality initiatives, identify and prioritize data gaps, and identify components of a national discard mortality science strategy. In 2012 and 2013, NMFS’ Bycatch Reduction Engineering Program (BREP) funded over $1.2 million in research designed to reduce discard mortality. A 2012 BREP project conducted a field validation study to evaluate the Reflex Action Mortality Predictor (RAMP) approach for determining discard mortality rates of Dungeness crab (Metacarcinus magister) in Oregon fisheries. This project evaluated the ...
Atlantic menhaden (Brevoortia tyrannus) support the largest fishery by volume on the United State... more Atlantic menhaden (Brevoortia tyrannus) support the largest fishery by volume on the United States East Coast, while also playing an important role as a forage species. Managers’ and stakeholders’ increasing concerns about the impact of Atlantic menhaden harvest on ecosystem processes led to an evolution in the assessment and management of this species from a purely single-species approach to an ecosystem approach. The first coastwide stock assessment of Atlantic menhaden for management used a single-species virtual population analysis (VPA). Subsequent assessments used a forward projecting statistical catch-at-age framework that incorporated estimates of predation mortality from a multispecies VPA while analytical efforts continued toward the development of ecosystem models and explicit ecological reference points (ERPs) for Atlantic menhaden. As an interim step while ecosystem models were being developed, a series of ad hoc measures to preserve Atlantic menhaden biomass for predat...
Federal mandates have been established in US law that demand consideration of ecosystem effects (... more Federal mandates have been established in US law that demand consideration of ecosystem effects (reauthorized Magnuson-Stevens Act, National Environmental Protection Act, Marine Mammal Protection Act, Endangered Species Act) when making fishery management decisions. Likewise, coastal states, interstate fishery commissions, and fishery management councils also recognize ecosystem concerns in their shared goal of long-term sustainability of their fisheries and many now explicitly consider ecosystem concerns. However, what information to include in management decisions and how to include it is far from clear in existing mandates, and practices for taking an ecosystem approach to management vary widely around the US. In a round-table format during the last two speaker slots for the day, managers and modelers from today's symposium discuss what approaches to ecosystem management of fishery resources have worked (or, have not) in different regions of the US and abroad.
Federal mandates have been established in US law that demand consideration of ecosystem effects (... more Federal mandates have been established in US law that demand consideration of ecosystem effects (reauthorized Magnuson-Stevens Act, National Environmental Protection Act, Marine Mammal Protection Act, Endangered Species Act) when making fishery management decisions. Likewise, coastal states, interstate fishery commissions, and fishery management councils also recognize ecosystem concerns in their shared goal of long-term sustainability of their fisheries and many now explicitly consider ecosystem concerns. However, what information to include in management decisions and how to include it is far from clear in existing mandates, and practices for taking an ecosystem approach to management vary widely around the US. In a round-table format during the last two speaker slots for the day, managers and modelers from today's symposium discuss what approaches to ecosystem management of fishery resources have worked (or, have not) in different regions of the US and abroad.
Federal mandates have been established in US law that demand consideration of ecosystem effects (... more Federal mandates have been established in US law that demand consideration of ecosystem effects (reauthorized Magnuson-Stevens Act, National Environmental Protection Act, Marine Mammal Protection Act, Endangered Species Act) when making fishery management decisions. Likewise, coastal states, interstate fishery commissions, and fishery management councils also recognize ecosystem concerns in their shared goal of long-term sustainability of their fisheries and many now explicitly consider ecosystem concerns. However, what information to include in management decisions and how to include it is far from clear in existing mandates, and practices for taking an ecosystem approach to management vary widely around the US. In a round-table format during the last two speaker slots for the day, managers and modelers from today's symposium discuss what approaches to ecosystem management of fishery resources have worked (or, have not) in different regions of the US and abroad.
Recreational and commercial fisheries experience continued restrictions due to high levels of fis... more Recreational and commercial fisheries experience continued restrictions due to high levels of fishing mortality and slow stock rebuilding. Moreover, discard of bycaught fish occurs in almost all fisheries, and stakeholders have sought solutions to barotrauma and discard mortality problems. Managers and scientists face data gaps in determining how discard mortality rates affect stock status and fishing levels. In 2013, NMFS began to develop a paper to review discard mortality initiatives, identify and prioritize data gaps, and identify components of a national discard mortality science strategy. In 2012 and 2013, NMFS’ Bycatch Reduction Engineering Program (BREP) funded over $1.2 million in research designed to reduce discard mortality. A 2012 BREP project conducted a field validation study to evaluate the Reflex Action Mortality Predictor (RAMP) approach for determining discard mortality rates of Dungeness crab (Metacarcinus magister) in Oregon fisheries. This project evaluated the ...
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