Topic
Fishing
About: Fishing is a research topic. Over the lifetime, 26543 publications have been published within this topic receiving 455552 citations. The topic is also known as: angling.
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TL;DR: In this article, a conceptual framework for interpreting combined trends in a set of simple indicators is proposed, relying beforehand on qualitative expectations anchored in ecological theory, and the test results are combined within the predefined framework, providing a diagnostic on the dynamics of fishing impacts on populations and communities.
Abstract: We present a method for combining individual indicator results into a comprehensive diagnostic of fishing impacts on fish populations and communities. A conceptual framework for interpreting combined trends in a set of simple indicators is proposed, relying beforehand on qualitative expectations anchored in ecological theory. The initial state of the community is first assessed using published information. Which combinations of trends are acceptable or undesirable is decided, depending on the initial status. The indicators are then calculated from a time-series and their time trends are estimated as the slopes of linear models. Finally, the test results are combined within the predefined framework, providing a diagnostic on the dynamics of fishing impacts on populations and communities. The method is demonstrated for nine coastal and shelf-sea fish communities monitored by French surveys. Most communities were persistently or increasingly impacted by fishing. In addition, climate change seems to have contributed to changes in East Atlantic communities.
112 citations
TL;DR: In this paper, the authors used data from interactions between artisanal fisheries and bottlenose dolphins around the Balearic Islands to assess these factors and impacts and estimated the combined cost of catch loss and net damage as 6.5% of the total catch value.
Abstract: Interactions between marine mammals and fisheries are a growing problem, and effective management requires assessment of the factors driving the interaction and of the impacts on fisheries. We used data from interactions between artisanal fisheries and bottlenose dolphins around the Balearic Islands to assess these factors and impacts. Observers collected data during 1,040 fishing operations over 3 yr. Location and year were important factors affecting interaction probability, with some areas showing large increases over the study period. We estimated the combined cost of catch loss and net damage as 6.5% of the total catch value (95% CI -12.3%, -1.6%), and the annual loss to be 3.4% (95% CI -6.5%, -0.1%) of the total catch by weight. This weight equates to the dietary needs of ∼12 dolphins (95% CI 0.2, 22), suggesting the fishery is not a vital food source for the dolphin population. Two dolphins died through entanglement during the observed fishing operations. We observed 3% of the total fishing activity, by weight, in 2003; scaling up this mortality directly suggests that as many as sixty dolphins may be dying in nets each year. This interaction likely has serious conservation implications for the dolphin population.
112 citations
TL;DR: In this article, the Marine Trophic Index (MTI) and the related Fishing-in-balance (FiB) index are used to evaluate the status of marine fisheries in India, based on taxonomically and spatially disaggregated time series of catches covering the years 1950 to 2000, when 3.3 million tonnes were landed.
112 citations
TL;DR: There are currently at least six commercial fisheries harvesting six different species of euphausiid, or krill: Antarctic krill (Euphalusia superba), fished in the Antarctic; North Pacific krill, fished off Japan and off western Canada; Thysanoessa inermis, Fishes off the coast of Japan and Off eastern Canada; and Thysanessa raschii and Meganyctiphanes norvegica which have been experimentally harvested off eastern Canada as mentioned in this paper.
112 citations
TL;DR: The continent-scale study showed recently established MPAs to be consistently located at sites with low resource value relative to adjacent fished reference areas, presumably generated by sociopolitical pressures and planning processes that aim to systematically avoid locations with valuable resources, potentially compromising biodiversity conservation goals.
Abstract: Tasmanian reef communities within "no-take" marine protected areas (MPAs) exhibited direct and indirect ecological changes that increasingly manifested over 16 years, eventually transforming into communities not otherwise present in the regional seascape. Data from 14 temperate and subtropical Australian MPAs further demonstrated that ecological changes continue to develop in MPAs over at least two decades, probably much longer. The continent-scale study additionally showed recently established MPAs to be consistently located at sites with low resource value relative to adjacent fished reference areas. This outcome was presumably generated by sociopolitical pressures and planning processes that aim to systematically avoid locations with valuable resources, potentially compromising biodiversity conservation goals. Locations that were formerly highly fished are needed within MPA networks if the networks are to achieve conservation aims associated with (1) safeguarding all regional habitat types, (2) protecting threatened habitats and species, and (3) providing appropriate reference benchmarks for assessing impacts of fishing. Because of long time lags, the ubiquity of fishing impacts, and the relatively recent establishment of MPAs, the full impact of fishing on coastal reefs has yet to be empirically assessed.
111 citations