Trophic indicators in fisheries: a call for re-evaluation |
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| Authors: | Sara Hornborg Andrea Belgrano Valerio Bartolino Daniel Valentinsson Friederike Ziegler |
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| Affiliation: | 1.Swedish Institute for Food and Biotechnology, Sustainable Food Production, Sweden;2.Department of Biological and Environmental Sciences, University of Gothenburg, Sweden;3.Department of Aquatic Resources, Institute of Marine Research, Swedish University of Agricultural Sciences, Sweden |
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| Abstract: | Mean trophic level (MTL) of landings and primary production required (PPR) by fisheries are increasingly used in the assessment of sustainability in fisheries. However, in their present form, MTL and PPR are prone to misinterpretation. We show that it is important to account for actual catch data, define an appropriate historical and spatial domain, and carefully consider the effects of fisheries management, based on results from a case study of Swedish fisheries during the past century. |
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| Keywords: | discard fisheries management MTL PPR seafood |
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