Article (Scientific journals)
Towards a framework for assessment and management of cumulative human impacts on marine food webs
Giakoumi, Sylvaine; Halpern, Benjamin S.; Michel, Loïc et al.
2015In Conservation Biology, 29 (4), p. 1228-1234
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Keywords :
Conservation actions; Ecosystem-based management; Expert Knowledge Elicitation; Multiple Threat; Seagrass; Vulnerability
Abstract :
[en] Effective ecosystem-based management requires understanding ecosystem responses to multiple human threats, rather than focusing on single threats. To understand ecosystem responses to anthropogenic threats holistically, it is necessary to know how threats affect different components within ecosystems and ultimately alter ecosystem functioning. We used a case study of a Mediterranean seagrass (Posidonia oceanica) food web and expert knowledge elicitation in an application of the initial steps of a framework for assessment of cumulative human impacts on food webs. We produced a conceptual seagrass food web model, determined the main trophic relationships, identified the main threats to the food web components, and assessed the components’ vulnerability to those threats. Some threats had high (e.g., coastal infrastructure) or low impacts (e.g., agricultural runoff) on all food web components, whereas others (e.g., introduced carnivores) had very different impacts on each component. Partitioning the ecosystem into its components enabled us to identify threats previously overlooked and to reevaluate the importance of threats commonly perceived as major. By incorporating this understanding of system vulnerability with data on changes in the state of each threat (e.g., decreasing domestic pollution and increasing fishing) into a food web model, managers may be better able to estimate and predict cumulative human impacts on ecosystems and to prioritize conservation actions.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Environmental sciences & ecology
Aquatic sciences & oceanology
Author, co-author :
Giakoumi, Sylvaine;  Hellenic Centre for Marine Research > Institute of Marine Biological Resources and Inland Waters
Halpern, Benjamin S.;  University of California Santa Barbara > Bren School of Environmental Science and Management
Michel, Loïc  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Gobert, Sylvie  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Sini, Maria;  University of the Aegean > Department of Marine Sciences
Boudouresque, Charles-François;  Mediterranean Institute of Oceanography
Gambi, Maria-Cristina;  Stazione Zoologica Anton Dohrn > Laboratory of Functional and Evolutionary Ecology
Katsanevakis, Stelios;  European Commission Joint Research Centre > Institute for Environment and Sustainability
Lejeune, Pierre;  STARESO Research Station
Montefalcone, Monica;  University of Genoa > Department of Earth, Environment and Life Sciences
Pergent, Gérard;  University of Corsica > EqEL
Pergent-Martini, Christine;  University of Corsica > EqEL
Sanchez-Jerez, Pablo;  University of Alicante > Department of Marine Science and Applied Biology
Velimirov, Branko;  Medical University of Vienna > Center of Pathobiochemistry and Genetics
Vizzini, Salvatrice;  University of Palermo > Department of Earth and Marine Sciences
Abadie, Arnaud ;  Université de Liège - ULiège > Form.doct. sc. (océanographie - Bologne)
Coll, Marta;  Institut de Recherche pour le Développement > UMR Marbec
Guidetti, Paolo;  Université Nice Sophia Antipolis > Faculté des Sciences
Micheli, Fiorenza;  Stanford University > Hopkins Marine Station
Possingham, Hugh P.;  The University of Queensland, Brisbane > ARC Centre of Excellence for Environmental Decisions
More authors (10 more) Less
Language :
English
Title :
Towards a framework for assessment and management of cumulative human impacts on marine food webs
Publication date :
2015
Journal title :
Conservation Biology
ISSN :
0888-8892
eISSN :
1523-1739
Publisher :
Blackwell Publishing, Malden, United States - Massachusetts
Volume :
29
Issue :
4
Pages :
1228-1234
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
NETMED
Funders :
Greek State
FSE - Fonds Social Européen [BE]
ARC CEED-University of Queensland
ULiège - Université de Liège [BE]
STARESO - Station de Recherches Sous-marines et Océanographiques [FR]
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since 26 February 2015

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