Mapping global fisheries: sharpening our focus

Watson, Reg; Kitchingman, Adrian; Gelchu, Ahmed; Pauly, Daniel

doi:10.1111/j.1467-2979.2004.00142.x

Cited by 188 publications

(193 citation statements)

References 9 publications

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“…Landings were mapped by the Sea Around Us project (Watson et al 2004) to infer landings of both domestic and foreign vessels in each EEZ. Here, we examined nine countries with the highest reported landings, representing 50 % of the landings globally (excluding High Seas: Canada, Chile, China, India, Japan, Norway, Peru, the UK, and the US), to determine the effect of mapping inaccuracies on fisheries status estimates.…”

Section: Sensitivity Analysesmentioning

confidence: 99%

Exploring Patterns of Seafood Provision Revealed in the Global Ocean Health Index

Kleisner

Longo

Coll

et al. 2013

AMBIO

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Sustainable provision of seafood from wildcapture fisheries and mariculture is a fundamental component of healthy marine ecosystems and a major component of the Ocean Health Index. Here we critically review the food provision model of the Ocean Health Index, and explore the implications of knowledge gaps, scale of analysis, choice of reference points, measures of sustainability, and quality of input data. Global patterns for fisheries are positively related to human development and latitude, whereas patterns for mariculture are most closely associated with economic importance of seafood. Sensitivity analyses show that scores are robust to several model assumptions, but highly sensitive to choice of reference points and, for fisheries, extent of time series available to estimate landings. We show how results for sustainable seafood may be interpreted and used, and we evaluate which modifications show the greatest potential for improvements.

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Section: Sensitivity Analysesmentioning

confidence: 99%

Exploring Patterns of Seafood Provision Revealed in the Global Ocean Health Index

Kleisner

Longo

Coll

et al. 2013

AMBIO

Self Cite

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“…The frequency of sustainable or overfished L indexes allowed us to calculate the probability of sustainability (P sust ) for any particular L index value as P sust L index ð ÞÑ , where N is the number of models in which L indexes lead to sustainable or overfishing conditions. Probabilities of fisheries sustainability were calculated for each EEZ in the world using catch data as from the Sea Around Us fisheries database, which contains harmonized data from a variety of sources including the Food and Agriculture Organization (i.e., statistics on fisheries catches from 1950 to 2004; [44]). That database adjusted landings data to account for the fishing of long-distance fishing fleets (i.e., landings that are reported by one country, but fished in a different one).…”

Section: Quantification Of Fisheries Sustainabilitymentioning

confidence: 99%

Recovery of aU.S. Endangered Fish

Hunter¹

2016

Fisheries Management and Conservation

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Ongoing declines in production of the world's fisheries may have serious ecological and socioeconomic consequences. As a result, a number of international efforts have sought to improve management and prevent overexploitation, while helping to maintain biodiversity and a sustainable food supply. Although these initiatives have received broad acceptance, the extent to which corrective measures have been implemented and are effective remains largely unknown. We used a survey approach, validated with empirical data, and enquiries to over 13,000 fisheries experts (of which 1,188 responded) to assess the current effectiveness of fisheries management regimes worldwide; for each of those regimes, we also calculated the probable sustainability of reported catches to determine how management affects fisheries sustainability. Our survey shows that 7% of all coastal states undergo rigorous scientific assessment for the generation of management policies, 1.4% also have a participatory and transparent processes to convert scientific recommendations into policy, and 0.95% also provide for robust mechanisms to ensure the compliance with regulations; none is also free of the effects of excess fishing capacity, subsidies, or access to foreign fishing. A comparison of fisheries management attributes with the sustainability of reported fisheries catches indicated that the conversion of scientific advice into policy, through a participatory and transparent process, is at the core of achieving fisheries sustainability, regardless of other attributes of the fisheries. Our results illustrate the great vulnerability of the world's fisheries and the urgent need to meet well-identified guidelines for sustainable management; they also provide a baseline against which future changes can be quantified.

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“…Because the world's important fisheries are more concentrated in higher latitudes 32 (Watson et al, 2004), research on the processes governing larval fish survival (including trophic-33 related processes) has also been historically concentrated in high latitudes. In lower latitudes, 34 aside from work on large pelagic species, there has been a relatively greater focus on transport-35 related processes and the implications for population connectivity, rather than on what might 36 influence the survival of the larvae en route during the planktonic period (Cowen and Sponaugle, 37 1997).…”

Section: Introduction 24mentioning

confidence: 99%

Latitudinal and taxonomic patterns in the feeding ecologies of fish larvae: A literature synthesis

Llopiz

2013

Journal of Marine Systems

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Abstract. The longtime focus on factors that influence the survival of marine fish larvae has 1 yielded an extensive number of studies on larval fish diets and feeding success. In light of a 2 recent increase in such studies within lower latitudes, results from the peer-reviewed literature 3 were synthesized to examine both latitudinal and taxonomic differences in several trophic-related 4 categories, including feeding incidence, trophic niche breadth, ontogenetic diet shifts, dominant 5 prey types, diet broadness, and larval piscivory. A total of 204 investigations (taxon-article 6 combinations) contained suitable results for at least one of these categories. Feeding incidences 7 (proportions of larvae containing food) were significantly higher in lower latitudes with all taxa 8 combined, as well as only within the order Perciformes. Feeding incidences also differed among 9 orders, with Perciformes and Scorpaeniformes having the highest values. The number of larval 10 taxa exhibiting a significantly increasing niche breadth (SD of the log of prey sizes) with larval 11 size decreased toward lower latitudes, with some taxa in lower latitudes exhibiting a decrease in 12 niche breadth with size. The frequency of exhibiting ontogenetic diets shifts decreased with 13 decreasing latitude, as did relative diet broadness (a function of prey types). The most common 14 dominant prey types in the diets of higher latitude larvae were nauplii and calanoid copepods, 15 with cyclopoids being rare in higher latitudes. Dominant prey types in lower latitudes were more 16 diverse, with nauplii, calanoids, and cyclopoids being equally important. Appendicularians 17 increased in importance with decreasing latitude, and one of the clearest latitudinal distinctions 18 was the display of larval piscivory (almost exclusively by scombroid taxa), which was highly 19 concentrated in lower latitudes. Overall, the latitudinal differences observed for multiple trophic-20 related factors highlight inherent distinctions in larval fish feeding ecologies, likely reflecting 21 differences in the overall structure of planktonic food webs over large latitudinal gradients. 22 23 3

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Mapping global fisheries: sharpening our focus

Cited by 188 publications

References 9 publications

Exploring Patterns of Seafood Provision Revealed in the Global Ocean Health Index

Exploring Patterns of Seafood Provision Revealed in the Global Ocean Health Index

Recovery of aU.S. Endangered Fish

Latitudinal and taxonomic patterns in the feeding ecologies of fish larvae: A literature synthesis

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