نتایج جستجو برای: fisheries

تعداد نتایج: 15801  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Stephen J Hall Ray Hilborn Neil L Andrew Edward H Allison

This article examines two strands of discourse on wild capture fisheries; one that focuses on resource sustainability and environmental impacts, another related to food and nutrition security and human well-being. Available data and research show that, for countries most dependent on fish to meet the nutritional requirements of their population, wild capture fisheries remain the dominant suppli...

2017
Andrew Frederick Johnson Marcia Moreno-Báez Alfredo Giron-Nava Julia Corominas Brad Erisman Exequiel Ezcurra Octavio Aburto-Oropeza

To gauge the collateral impacts of fishing we must know where fishing boats operate and how much they fish. Although small-scale fisheries land approximately the same amount of fish for human consumption as industrial fleets globally, methods of estimating their fishing effort are comparatively poor. We present an accessible, spatial method of calculating the effort of small-scale fisheries bas...

2009
Katja Enberg Christian Jørgensen Erin S Dunlop Mikko Heino Ulf Dieckmann

Worldwide depletion of fish stocks has led fisheries managers to become increasingly concerned about rebuilding and recovery planning. To succeed, factors affecting recovery dynamics need to be understood, including the role of fisheries-induced evolution. Here we investigate a stock's response to fishing followed by a harvest moratorium by analyzing an individual-based evolutionary model param...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Michael C Melnychuk Emily Peterson Matthew Elliott Ray Hilborn

Fisheries management systems around the world are highly diverse in their design, operation, and effectiveness at meeting objectives. A variety of management institutions, strategies, and tactics are used across disparate regions, fishing fleets, and taxonomic groups. At a global level, it is unclear which particular management attributes have greatest influence on the status of fished populati...

2017
Ilaria Vielmini Allison L. Perry María José Cornax

Management of fisheries in the Mediterranean basin has often been described as a unique and complex challenge, due to their multi-specificity, the diversity of gear-types, and the number of nations involved. This perspective has gone hand-in-hand for decades with a lack of strong political will from decision-makers, who have been unwilling to put Mediterranean fisheries management high on their...

2013
Hongguang Ma Howard Townsend Xinsheng Zhang Maddy Sigrist Villy Christensen

Recent calls for the development of ecosystem-based fisheries management compel the development of resource management tools and linkages between existing fisheries management tools and other resource tools to enable assessment and management of multiple impacts on fisheries resources. In this paper, we describe the use of the Chesapeake Bay Fisheries Ecosystem Model (CBFEM), developed using th...

Journal: :Current Biology 2007
Katie Newton Isabelle M. Côté Graham M. Pilling Simon Jennings Nicholas K. Dulvy

Overexploitation is one of the principal threats to coral reef diversity, structure, function, and resilience [1, 2]. Although it is generally held that coral reef fisheries are unsustainable [3-5], little is known of the overall scale of exploitation or which reefs are overfished [6]. Here, on the basis of ecological footprints and a review of exploitation status [7, 8], we report widespread u...

2004
RICHARD B. POLLNAC

This paper presents a model for Fisheries Social Impact Assessment (SIA) that lays the groundwork for development of fisheries-focused, quantitative social assessments with a clear conceptual model. The usefulness of current fisheries SIA’s has been called into question by some as incompatible with approaches taken by fisheries biologists and economists when assessing potential effects of manag...

2013
Malin L. Pinsky

24 While previous research has documented marine fish and invertebrates shifting poleward 25 in response to warming climates, less is known about the response of fisheries to these changes. By 26 examining fisheries in the northeastern United States over the last four decades of warming 27 temperatures, we show that northward shifts in species distributions were matched by 28 corresponding nort...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
K M Brander

Current global fisheries production of approximately 160 million tons is rising as a result of increases in aquaculture production. A number of climate-related threats to both capture fisheries and aquaculture are identified, but we have low confidence in predictions of future fisheries production because of uncertainty over future global aquatic net primary production and the transfer of this ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید