The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
Hundred‐year decline of North Atlantic predatory fishes
Open accessAbstract
We estimate the biomass of high‐trophic level fishes in the North Atlantic at a spatial scale of 0.5° latitude by 0.5° longitude based on 23 spatialized ecosystem models, each constructed to represent a given year or short period from 1880 to 1998. We extract over 7800 data points that describe the abundance of high‐trophic level fishes as a function of year, primary production, depth, temperature, latitude, ice cover and catch composition. We then use a multiple linear regression to predict the spatial abundance for all North Atlantic spatial cells for 1900 and for each year from 1950 to 1999. The results indicate that the biomass of high‐trophic level fishes has declined by two‐thirds during the last 50‐year period, and with a factor of nine over the century. Catches of high‐trophic level fishes increased from 2.4 to 4.7 million tonnes annually in the late 1960s, and subsequently declined to below 2 million tonnes annually in the late 1990s. The fishing intensity for high‐trophic level fishes tripled during the first half of the time period and remained high during the last half of the time period. Comparing the fishing intensity to similar measures from 35 assessments of high‐trophic level fish populations from the North Atlantic, we conclude that the trends in the two data series are similar. Our results raise serious concern for the future of the North Atlantic as a diverse, healthy ecosystem; we may soon be left with only low‐trophic level species in the sea.
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Metadata
- Authors
- Christensen, V., Guénette, S., Heymans, J. J., Walters, C. J., Watson, R., Zeller, D., & Pauly, D.
- Venue
- Fish and Fisheries
- Publisher
- Wiley
- Published
- 2003-03
- Volume
- 4
- Issue
- 1
- Pages
- 1-24
- ISSN
- 1467-2960 (ISSN-L)
- 1467-2979
- OpenAlex
- W2125126374
- Cited by
- 466
- References
- 22
- FWCI
- 33.91
- Type
- journal article
- Language
- en
- Open access
- green
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