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Journal Article

Primary productivity demands of global fishing fleets

Reg Watson; Dirk Zeller; Daniel Pauly
Fish and Fisheries · Vol. 15, Issue 2 · pp. 231-241 · 2014

Abstract

To be sustainable, the extractive process of fishing requires biomass renewal via primary production driven by solar energy. Primary production required ( PPR ) estimates how much primary production is needed to replace the biomass of fisheries landings removed from marine ecosystems. Here, we examine the historical fishing behaviour of global fishing fleets, which parts of the food web they rely on, which ecosystems they fish and how intensively. Highly mobile E uropean and A sian fleets have moved to ever more distant productive waters since the 1970s, especially once they are faced with the costs of access agreements for exclusive economic zones ( EEZ s) declared by host countries. We examine fleet PPR demands in the context of large marine ecosystems ( LME s), which are frequently fished with PPR demands well above their average primary productivity ( PP ). In some cases, this was mitigated by subsequent emigration of fleets or by management intervention. Fleet movements, however, have stressed additional marine areas, including the EEZ s of developing countries. This suggests the potential for spatial serial depletion, if fishing capacity is not reduced to more sustainable PP removal levels. Fundamentally, fishing is limited by solar‐powered PP limits. Fishing beyond solar production has occurred, but in the future, marine systems may not be as forgiving, especially if overfishing and climate change compromise their resilience.

Bibliographic Information

JournalFish and Fisheries
PublisherWiley
Publication Date2014-06-01
Publication Year2014
Volume15
Issue2
Pages231-241
Document TypeJournal Article
Print ISSN1467-2960
eISSN1467-2979
DOI10.1111/faf.12013
SubjectGeneral Aquaculture, Fisheries & Fish Science

Access Information

NARA Access Coverage2000-01-01~Current
Journal Homepagehttps://onlinelibrary.wiley.com/loi/14672979
Publisher PageOpen Publisher Page
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