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Title: Identifying main interactions in marine predator-prey networks of the Bay of Biscay
Authors: Astarloa, Amaia; Louzao, Maite; Boyra, Guillermo; Martinez, Udane; Rubio, Anna; Irigoien, Xabier; Hui, Francis K. C. and Chust, Guillem
Citation: ICES JOURNAL OF MARINE SCIENCE, 2019, 76, 2247-2259
Abstract: Identifying the role that environmental factors and biotic interactions play in species distribution can be essential to better understand and predict how ecosystems will respond to changing environmental conditions. This study aimed at disentangling the assemblage of the pelagic predator-prey community by identifying interspecific associations and their main drivers. For this purpose, we applied the joint species distribution modelling approach, JSDM, to the co-occurrence patterns of both prey and top predator communities obtained from JUVENA surveys during 2013-2016 in the Bay of Biscay. Results showed that the co-occurrence patterns of top predators and prey were driven by a combination of environmental and biotic factors, which highlighted the importance of considering both components to fully understand the community structure. In addition, results also revealed that many biotic interactions, such as schooling in prey (e.g. anchovy-sardine), local enhancement/facilitation in predators (e.g. Cory's shearwater-fin whale), and predation between predator-prey species (e.g. northern gannet-horse mackerel), were led by positive associations, although predator avoidance behaviour was also suggested between negatively associated species (e.g. striped dolphin-blue whiting). The identification of interspecific associations can therefore provide insights on the functioning of predators-prey network and help advance towards an ecosystem-based management.
Keywords: Bay of Biscay; co-occurrence patterns; environmental drivers; joint species distribution models; positive associations; predator-prey networks; species interactions; CLIMATE-CHANGE; BIOTIC INTERACTIONS; SPECIES DISTRIBUTIONS; SPATIAL-DISTRIBUTION; COOCCURRENCE; MODELS; DIET; SEABIRDS; ATLANTIC; ABUNDANCE
Issue Date: 2019
Type: Article
DOI: 10.1093/icesjms/fsz140
ISSN: 1054-3139
E-ISSN: 1095-9289
Funder: Basque Government (Department of Agriculture, Fishing, and Food Policy)
Spanish Ministry of Economy, Industry, and Competitiveness through the CHALLENGES project [CTM2013-47032-R]
Basque GovernmentBasque Government [PRE\_2016\_1\_0134]
Ramon y Cajal researcher programme of the Spanish Ministry of Economy, Industry, and Competitiveness [RYC-2012-09897]
``Viceconsejeria de Agricultura, Pesca y Politicas Alimentarias-Departamento de Desarrollo Economico y Competitividad�� of the Basque Government
``Secretaria General de Pesca, Ministerio de Agricultura, Alimentacion y Medio Ambiente�� of the Spanish Government
Appears in Publication types:Artículos científicos

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