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Title: Ecological indicators to capture the effects of fishing on biodiversity and conservation status of marine ecosystems
Authors: Coll, M.; Shannon, L. J.; Kleisner, K. M.; Juan-Jorda, M. J.; Akoglu, A. G.; Banaru, D.; Boldt, J. L.; Cook, A.; Diallo, I.; Fu, C.; Fox, C.; Gurney, L. J.; Hattab, T.; Heymans, J. J.; Knight, B. R.; Kucukavsar, S.; Large, S. I.; Machias, A.; Marshall, K. N.; Masski, H.; Piroddi, C.; Tam, J.; Thiao, D.; Thiaw, M.; Travers-Trolet, M.; Tsagarakis, K.; Tuck, I.; Yemane, D.; Zador, S. G.; Shin, Y. -J.; Bundy, A.; Borges, M. F.; Gascuel, D.; Jouffre, D.; Lynam, C.; Ojaveer, H.; Torres, M. A.; van der Meeren, G. I.
Citation: ECOLOGICAL INDICATORS, 2016, 60, 947-962
Abstract: IndiSeas (´´Indicators for the Seas´´) is a collaborative international working group that was established in 2005 to evaluate the status of exploited marine ecosystems using a suite of indicators in a comparative framework. An initial shortlist of seven ecological indicators was selected to quantify the effects of fishing on the broader ecosystem using several criteria (i.e., ecological meaning, sensitivity to fishing, data availability, management objectives and public awareness). The suite comprised: (i) the inverse coefficient of variation of total biomass of surveyed species, (ii) mean fish length in the surveyed community, (iii) mean maximum life span of surveyed fish species, (iv) proportion of predatory fish in the surveyed community, (v) proportion of under and moderately exploited stocks, (vi) total biomass of surveyed species, and (vii) mean trophic level of the landed catch. In line with the Nagoya Strategic Plan of the Convention on Biological Diversity (2011-2020), we extended this suite to emphasize the broader biodiversity and conservation risks in exploited marine ecosystems. We selected a subset of indicators from a list of empirically based candidate biodiversity indicators initially established based on ecological significance to complement the original IndiSeas indicators. The additional selected indicators were: (viii) mean intrinsic vulnerability index of the fish landed catch, (ix) proportion of non-declining exploited species in the surveyed community, (x) catch-based marine trophic index, and (xi) mean trophic level of the surveyed community. Despite the lack of data in some ecosystems, we also selected (xii) mean trophic level of the modelled community, and (xiii) proportion of discards in the fishery as extra indicators. These additional indicators were examined, along with the initial set of IndiSeas ecological indicators, to evaluate whether adding new biodiversity indicators provided useful additional information to refine our understanding of the status evaluation of 29 exploited marine ecosystems. We used state and trend analyses, and we performed correlation, redundancy and multivariate tests. Existing developments in ecosystem-based fisheries management have largely focused on exploited species. Our study, using mostly fisheries independent survey-based indicators, highlights that biodiversity and conservation-based indicators are complementary to ecological indicators of fishing pressure. Thus, they should be used to provide additional information to evaluate the overall impact of fishing on exploited marine ecosystems. (C) 2015 Elsevier Ltd. All rights reserved.
Keywords: Ecological indicators; Marine ecosystems; Biodiversity; Redundancy; Trends; States; Fishing impacts; Conservation; FISHERIES MANAGEMENT; TROPHIC CASCADES; GLOBAL OCEAN; HUMAN IMPACT; BALTIC SEA; INDEX; RESPONSES; TRENDS; HEALTH; FRAMEWORK
Issue Date: 2016
Type: Article
Language: English
DOI: 10.1016/j.ecolind.2015.08.048
ISSN: 1470-160X
E-ISSN: 1872-7034
Funder: European Network of Excellence EUR-OCEANS \[511106]
European collaborative project MEECE - Marine Ecosystem Evolution in a Changing Environment \[212085]
IRD (Institute of Research for Development)
European Commission \[PCIG10-GA-2011-303534]
Spanish National Program Ramon y Cajal
South African Research Chair Initiative - South African Department of Science and Technology (DST)
Northeast Fisheries Science Center
Nature Conservancy through Gordon and Betty Moore Foundation
EU \[PIOF-GA-2013-628116]
Portuguese Oceanic and Atmospheric Institute
Joint Research Centre of the European Commission
Estonian Ministry of Education and Research \[SF0180005s10]
Natural Environment Research Council
Department for Environment, Food and Rural Affairs \[NE/L003279/1]
Institute of Marine Research, Norway
project PERSEUS (Policy-oriented marine Environmental Research in the Southern EUropean Seas) \[287600]
Spanish Institute of Oceanography (IEO)
National Research Council fellowship at the Northwest Fishery Science Center
French project EMIBIOS (FRB) \[APP-SCEN-2010-II]
DEVOTES - Development of innovative tools for understanding marine biodiversity and assessing good Environmental Status - EC project \[308392]
Appears in Publication types:Artículos científicos

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