title: Trophic indicators in fisheries: a call for re-evaluation.
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.
authors.affiliation: Swedish Institute for Food and Biotechnology, Sustainable Food Production, Sweden. sara.hornborg@sik.se
authors.forename: Sara
authors.initials: S
authors.lastname: Hornborg
authors.forename: Andrea
authors.initials: A
authors.lastname: Belgrano
authors.forename: Valerio
authors.initials: V
authors.lastname: Bartolino
authors.forename: Daniel
authors.initials: D
authors.lastname: Valentinsson
authors.forename: Friederike
authors.initials: F
authors.lastname: Ziegler
mesh_terms: D000818:Animals; D044822:Biodiversity; D003247:Conservation of Natural Resources / Q000379:methods*; D003445:Crustacea / Q000502:physiology*; D017753:Ecosystem; D005398:Fisheries / Q000379:methods*; D005399:Fishes / Q000502:physiology*; D020387:Food Chain; D008954:Models, Biological; D011157:Population Dynamics; D012621:Seasons; D013548:Sweden