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Defining and estimating global marine fisheries bycatch

Author

Listed:
  • Davies, R.W.D.
  • Cripps, S.J.
  • Nickson, A.
  • Porter, G.

Abstract

Unselective fishing catches non-target organisms as 'bycatch'--an issue of critical ocean conservation and resource management concern. However, the situation is confused because perceptions of target and non-target catch vary widely, impeding efforts to estimate bycatch globally. To remedy this, the term needs to be redefined as a consistent definition that establishes what should be considered bycatch. A new definition is put forward as: 'bycatch is catch that is either unused or unmanaged'. Applying this definition to global marine fisheries data conservatively indicates that bycatch represents 40.4 percent of global marine catches, exposing systemic gaps in fisheries policy and management.

Suggested Citation

  • Davies, R.W.D. & Cripps, S.J. & Nickson, A. & Porter, G., 2009. "Defining and estimating global marine fisheries bycatch," Marine Policy, Elsevier, vol. 33(4), pages 661-672, July.
    • Handle: RePEc:eee:marpol:v:33:y:2009:i:4:p:661-672
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    Cited by:

    1. Nijdam, Durk & Rood, Trudy & Westhoek, Henk, 2012. "The price of protein: Review of land use and carbon footprints from life cycle assessments of animal food products and their substitutes," Food Policy, Elsevier, vol. 37(6), pages 760-770.
    2. Oliver, Shelby & Braccini, Matias & Newman, Stephen J. & Harvey, Euan S., 2015. "Global patterns in the bycatch of sharks and rays," Marine Policy, Elsevier, vol. 54(C), pages 86-97.
    3. Mercedes Rosello & Juan Vilata & Dyhia Belhabib, 2021. "Atlantic Shortfin Mako: Chronicle of a Death Foretold?," Laws, MDPI, vol. 10(3), pages 1-12, June.
    4. Inoue, Naoto K., 2022. "Quantitative evaluation of the effects of bycatch on native species using mathematical models," Ecological Modelling, Elsevier, vol. 474(C).
    5. Natali, F. & Cacchiarelli, L. & Branca, G., 2022. "There are plenty more (sustainable) fish in the sea: A discrete choice experiment on discarded species in Italy," Ecological Economics, Elsevier, vol. 196(C).
    6. Vilma Xhakollari & Sina Ahmadi Kaliji & Marija Cerjak & Damir Kovačić & Luca Mulazzani & Luca Camanzi, 2023. "Consumer Preferences and Willingness to Pay for Clams with Sustainability Certification in Mediterranean Countries," Sustainability, MDPI, vol. 15(15), pages 1-18, August.
    7. Guanais, José Hugo Gondim & Medeiros, Rodrigo Pereira & McConney, Patrick A., 2015. "Designing a framework for addressing bycatch problems in Brazilian small-scale trawl fisheries," Marine Policy, Elsevier, vol. 51(C), pages 111-118.
    8. Raj M Desai & George E Shambaugh, 2021. "Measuring the global impact of destructive and illegal fishing on maritime piracy: A spatial analysis," PLOS ONE, Public Library of Science, vol. 16(2), pages 1-17, February.

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