Journal ArticleDOI
Fisheries Sustainability via Protection of Age Structure and Spatial Distribution of Fish Populations
TLDR
Recent research suggesting that an old-growth age structure, combined with a broad spatial distribution of spawning and recruitment, is at least as important as spawning biomass in maintaining long-term sustainable population levels is summarized.Abstract:
Numerous groundfish stocks in both the Atlantic and Pacific are considered overfished, resulting in large-scale fishery closures. Fishing, in addition to simply removing biomass, also truncates the age and size structure of fish populations and often results in localized depletions. We summarize recent research suggesting that an old-growth age structure, combined with a broad spatial distribution of spawning and recruitment, is at least as important as spawning biomass in maintaining long-term sustainable population levels. In particular, there is evidence that older, larger female rockfishes produce larvae that withstand starvation longer and grow faster than the offspring of younger fish, that stocks may actually consist of several reproductively isolated units, and that recruitment may come from only a small and different fraction of the spawning population each year. None of these phenomena is accounted for in current management programs. We examine alternative management measures that addre...read more
Citations
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Journal ArticleDOI
Critical science gaps impede use of no-take fishery reserves
Peter F. Sale,Robert K. Cowen,Bret S. Danilowicz,Geoffrey P. Jones,Jacob P. Kritzer,Kenyon C. Lindeman,Serge Planes,Nicholas Polunin,Garry R. Russ,Yvonne Sadovy,Robert S. Steneck +10 more
TL;DR: The science is reviewed, the most crucial gaps are identified, and ways to fill them are suggested so that a promising management tool can help meet the growing challenges faced by coastal marine fisheries.
Journal ArticleDOI
Global fish production and climate change.
TL;DR: Reducing fishing mortality in the majority of fisheries, which are currently fully exploited or overexploited, is the principal feasible means of reducing the impacts of climate change.
Journal ArticleDOI
Emerging from Hjort's Shadow
TL;DR: Appreciating recruitment variability, explaining its probable causes, considering implications for management, and understanding it in the context of broader variability in marine ecosystems, are all worthy goals.
Journal ArticleDOI
Why fishing magnifies fluctuations in fish abundance
Christian N. Anderson,Chih-hao Hsieh,Stuart A. Sandin,Roger P. Hewitt,Anne B. Hollowed,John Beddington,Robert M. May,George Sugihara +7 more
TL;DR: In California Current fisheries, increased temporal variability in the population does not arise from variable exploitation, nor does it reflect direct environmental tracking, but arises from increased instability in dynamics.
Journal ArticleDOI
Documented and Potential Biological Impacts of Recreational Fishing: Insights for Management and Conservation
TL;DR: In this paper, the authors examined the potential biological impacts of angling by focusing on study results associated with high exploitation rates and pronounced selective exploitation and found that the impacts range from impacts occurring directly on the exploited species (truncation of the natural age and size structure, depensatory mechanisms, loss of genetic variability, evolutionary changes), to those that occur on the aquatic ecosystem (changes in trophic cascades, trait-mediated effects).
References
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Journal ArticleDOI
The evolution of life histories
TL;DR: In this article, age and size at maturity at maturity number and size of offspring Reproductive lifespan and ageing are discussed. But the authors focus on the effects of age and stage structure on fertility.
Book
Ecology of teleost fishes
TL;DR: The diversity of teleost fishes defining the problem organization of the text adaptive response to the environmental change and ways of studying the use of time and space are described.
Journal ArticleDOI
Larval Size and Recruitment Mechanisms in Fishes: Toward a Conceptual Framework
TL;DR: A large number of mechanisms controlling recruitment in fishes are unknown and the literature on recruitment mechanisms is large and growing rapidly, but it is unclear how these mechanisms are influenced by environmental influences.
Journal Article
Size-selective mortality in the juvenile stage of teleost fishes : A review
TL;DR: This review evaluates field and laboratory studies that have examined size-based differences in survival, with emphasis on the juvenile stage of teleost fishes, and results in general support the bigger is better hypothesis, although a number of examples indicate non-selective mortality with no obvious size advantages.
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