Journal ArticleDOI
Contrasting Global Trends in Marine Fishery Status Obtained from Catches and from Stock Assessments
Reads0
Chats0
TLDR
How use of catch data affects assessment of fisheries stock status is evaluated and it is concluded that at present 28-33% of all stocks are overexploited and 7-13% ofall stocks are collapsed, which is fairly stable in recent years.Abstract:
There are differences in perception of the status of fisheries around the world that may partly stem from how data on trends in catches over time have been used. On the basis of catch trends, it has been suggested that about 70% of all stocks are overexploited due to unsustainable harvesting and 30% of all stocks have collapsed to <10% of unfished levels. Catch trends also suggest that over time an increasing number of stocks will be overexploited and collapsed. We evaluated how use of catch data affects assessment of fisheries stock status. We analyzed simulated random catch data with no trend. We examined well-studied stocks classified as collapsed on the basis of catch data to determine whether these stocks actually were collapsed. We also used stock assessments to compare stock status derived from catch data with status derived from biomass data. Status of stocks derived from catch trends was almost identical to what one would expect if catches were randomly generated with no trend. Most classifications of collapse assigned on the basis of catch data were due to taxonomic reclassification, regulatory changes in fisheries, and market changes. In our comparison of biomass data with catch trends, catch trends overestimated the percentage of overexploited and collapsed stocks. Although our biomass data were primarily from industrial fisheries in developed countries, the status of these stocks estimated from catch data was similar to the status of stocks in the rest of the world estimated from catch data. We conclude that at present 28-33% of all stocks are overexploited and 7-13% of all stocks are collapsed. Additionally, the proportion of fished stocks that are overexploited or collapsed has been fairly stable in recent years.read more
Citations
More filters
Journal ArticleDOI
The FAO global capture production database: A six-decade effort to catch the trend
TL;DR: The FAO capture database as discussed by the authors provides a service to the community interested in fishery information, including catch data for almost 1850 species items, and reflecting geo-political, historical and natural events.
Journal ArticleDOI
Eco-Label Conveys Reliable Information on Fish Stock Health to Seafood Consumers
Nicolás L. Gutiérrez,Sarah R. Valencia,Trevor A. Branch,David J. Agnew,Julia K. Baum,Patricia L. Bianchi,Jorge Cornejo-Donoso,Jorge Cornejo-Donoso,Christopher Costello,Omar Defeo,Timothy E. Essington,Ray Hilborn,Daniel D. Hoggarth,Ashley E. Larsen,Chris Ninnes,Keith Sainsbury,Rebecca L. Selden,Seeta A. Sistla,Anthony D. M. Smith,Amanda Stern-Pirlot,Sarah J. Teck,James T. Thorson,Nicholas E. Williams +22 more
TL;DR: This work compared status and abundance trends of 45 certified stocks with those of 179 uncertified stocks, finding that 74% of certified fisheries were above biomass levels that would produce maximum sustainable yield, compared with only 44% of uncertification fisheries.
Progress towards the Aichi Biodiversity Targets: an assessment of biodiversity trends, policy scenarios and key actions
Paul Leadley,Cornelia B. Krug,Rob Alkemade,Henrique M. Pereira,U. Rashid Sumaila,Matt Walpole,Alexandra Marques,Tim Newbold,Louise S. L. Teh,Jennifer van Kolck,Céline Bellard,Stephanie R. Januchowski-Hartley,Peter J. Mumby +12 more
TL;DR: A more detailed analysis of progress towards the Aichi Biodiversity Targets and evidence that underpins the conclusions in GBO-4 and policy-relevant information on the actions needed to achieve each target is provided in this article.
Journal ArticleDOI
Issues of fish consumption for cardiovascular disease risk reduction.
TL;DR: The relationship between fish intake and CVD risk reduction as well as the other nutritional contributions of fish to the diet are described as are other pertinent issues of fish nutrition, production, sustainability, and consumption patterns.
Journal ArticleDOI
The Anti-Inflammatory Effect of Algae-Derived Lipid Extracts on Lipopolysaccharide (LPS)-Stimulated Human THP-1 Macrophages.
Ruairi C. Robertson,Ruairi C. Robertson,Freddy Guihéneuf,Bojlul Bahar,Matthias Schmid,Dagmar B. Stengel,Gerald F. Fitzgerald,R. Paul Ross,Catherine Stanton,Catherine Stanton +9 more
TL;DR: Anti-inflammatory potential of lipid extracts from red seaweeds can inhibit LPS-induced inflammatory pathways in human macrophages, and algal lipid extracts should be further explored as anti-inflammatory ingredients for chronic inflammation-linked metabolic diseases.
References
More filters
Journal ArticleDOI
Impacts of biodiversity loss on ocean ecosystem services.
Boris Worm,Edward B. Barbier,Nicola Beaumont,J. Emmett Duffy,Carl Folke,Carl Folke,Benjamin S. Halpern,Jeremy B. C. Jackson,Jeremy B. C. Jackson,Heike K. Lotze,Fiorenza Micheli,Stephen R. Palumbi,Enric Sala,Kimberley A. Selkoe,John J. Stachowicz,Reg Watson +15 more
TL;DR: The authors analyzed local experiments, long-term regional time series, and global fisheries data to test how biodiversity loss affects marine ecosystem services across temporal and spatial scales, concluding that marine biodiversity loss is increasingly impairing the ocean's capacity to provide food, maintain water quality, and recover from perturbations.
Journal ArticleDOI
Rebuilding Global Fisheries
Boris Worm,Ray Hilborn,Julia K. Baum,Trevor A. Branch,Jeremy S. Collie,Christopher Costello,Michael J. Fogarty,Elizabeth A. Fulton,Jeffrey A. Hutchings,Simon Jennings,Simon Jennings,Olaf P. Jensen,Heike K. Lotze,Pamela M. Mace,Tim R. McClanahan,Cóilín Minto,Stephen R. Palumbi,Ana M. Parma,Daniel Ricard,Andrew Rosenberg,Reg Watson,Dirk Zeller +21 more
TL;DR: Current trends in world fisheries are analyzed from a fisheries and conservation perspective, finding that 63% of assessed fish stocks worldwide still require rebuilding, and even lower exploitation rates are needed to reverse the collapse of vulnerable species.
Journal ArticleDOI
Some aspects of the dynamics of populations important to the management of the commercial marine fisheries
TL;DR: In order to apply the theory developed here to the tropical tuna fishery, it will be necessary to compile statistics of catch, abundance and intensity of fishing over a considerable series of years, beginning as early in the history of the fishery as possible.
Book ChapterDOI
The National Oceanic and Atmospheric Administration
TL;DR: The National Oceanic and Atmospheric Administration (NOAA) directs the National Marine Sanctuary Program (NMSP), through its Office of Ocean and Coastal Resources Management (OCRM) as mentioned in this paper.
Journal ArticleDOI
Cascading effects of the loss of apex predatory sharks from a coastal ocean.
TL;DR: For example, this paper found that the abundance of all 11 great sharks that consume other elasmobranchs (rays, skates, and small sharks) fell over the past 35 years, while 12 of 14 of these prey species increased in coastal northwest Atlantic ecosystems.
Related Papers (5)
Rebuilding Global Fisheries
Boris Worm,Ray Hilborn,Julia K. Baum,Trevor A. Branch,Jeremy S. Collie,Christopher Costello,Michael J. Fogarty,Elizabeth A. Fulton,Jeffrey A. Hutchings,Simon Jennings,Simon Jennings,Olaf P. Jensen,Heike K. Lotze,Pamela M. Mace,Tim R. McClanahan,Cóilín Minto,Stephen R. Palumbi,Ana M. Parma,Daniel Ricard,Andrew Rosenberg,Reg Watson,Dirk Zeller +21 more