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Ecosystem-Based Fishery Management
Ecosystem-based fishery management (EBFM) is a new direction for fishery management, essentially reversing the order of management priorities so that management starts with the ecosystem rather than…
IMPLEMENTING THE PRECAUTIONARY PRINCIPLE IN FISHERIES MANAGEMENT THROUGH MARINE RESERVES
Overexploitation of marine fisheries remains a serious problem worldwide, even for many fisheries that have been intensively managed by coastal nations. Many factors have contributed to these system…
When can marine reserves improve fisheries management
Modelling the proximate basis of salmonid life-history variation, with application to Atlantic salmon, Salmo salar L.
A model is described, based on proximate considerations, for salmonid life histories, focused on Atlantic salmon Salmo salar L, providing a framework within which one can understand how ecology relates to the physiological mechanisms leading to the developmental changes of smolt metamorphosis and maturation.
Fugitive Salmon: Assessing the Risks of Escaped Fish from Net-Pen Aquaculture
It is shown that risks of damage to wild salmon populations, ecosystems, and society are large when salmon arefarmed in their native range, when large numbers of salmon are farmed relative to the size of wild populations, and when exotic pathogens are introduced.
Little Fish, Big Impact: Managing a Crucial Link in Ocean Food Webs
Cover photo illustration: shoal of forage fish (center), surrounded by (clockwise from top), humpback whale, Cape gannet, Steller sea lions, Atlantic puffins, sardines and black-legged kittiwake.
Sex Ratios and Multifaceted Parental Investment
Simple models are developed that predict that a greater availability of resources used for provisions will lead to an increase in the amount provisioned per offspring and an increased in the numerical or biomass proportion of females produced.
The global contribution of forage fish to marine fisheries and ecosystems
Forage fish play a pivotal role in marine ecosystems and economies worldwide by sustaining many predators and fisheries directly and indirectly. We estimate global forage fish contributions to marine…
The effects of size-selective fisheries on the stock dynamics of and sperm limitation in sex-changing fish
This work presents a general framework using an individual-based simulation model to determine the effect of life-history pattern, sperm production, mating system, and management strategy on stock dynamics of a protogynous population with fixed sex change compared to an otherwise identical dioecious population.
Trade-offs between growth and mortality and the maintenance of individual variation in growth
A simple life-history model is used to show how individual trade-offs between growth and mortality can lead to the maintenance of individual variation in growth rates through nearly equal fitness (solution of the Euler-Lotka equation) for individuals growing at different rates.