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dc.contributor.authorHeinrich, Sonja
dc.contributor.authorGenov, Tilen
dc.contributor.authorFuentes Riquelme, Marjorie
dc.contributor.authorHammond, Philip S.
dc.identifier.citationHeinrich , S , Genov , T , Fuentes Riquelme , M & Hammond , P S 2019 , ' Fine-scale habitat partitioning of Chilean and Peale’s dolphins and their overlap with aquaculture ' , Aquatic Conservation: Marine and Freshwater Ecosystems , vol. 29 , no. S1 , pp. 212-226 .
dc.identifier.otherPURE: 255207509
dc.identifier.otherPURE UUID: 61e5a457-c136-4399-92eb-07743426ac15
dc.identifier.otherORCID: /0000-0003-4752-0348/work/61621978
dc.identifier.otherORCID: /0000-0002-2381-8302/work/61621986
dc.identifier.otherScopus: 85071777501
dc.identifier.otherWOS: 000484997200015
dc.description.abstract1. Predictive species distribution models (SDMs) have become powerful tools to determine habitat use patterns of mobile marine predators and their spatial overlap with potentially impacting anthropogenic activities. 2. This study used SDMs to investigate fine‐scale habitat use patterns of two poorly known and broadly sympatric coastal delphinids, Chilean dolphins (Cephalorhynchus eutropia) and Peale's dolphins (Lagenorhynchus australis), and their spatial interactions with intense aquaculture farming activities in the Chiloé archipelago, southern Chile. 3. A long‐term dataset (2002–2012) of boat‐based dolphin sightings and concurrently in situ collected environmental and anthropogenic variables was analysed using binomial Generalized Additive Models to investigate ecological drivers of each species' fine‐scale distribution and to predict dolphin occurrence spatially. 4. Chilean dolphins preferred shallow (<30 m deep), turbid waters, close to shore (<500 m) and river mouths which often placed them in sheltered bays and channels used intensively by shellfish farms. Peale's dolphins were also found in shallow waters but occurred over a wider range of conditions along more open or exposed coastlines. Both species had to navigate extensive salmon and shellfish farming sites to transit between areas of important habitat. 5. Sightings and predicted occurrence maps showed a clear pattern of spatial habitat partitioning between species, which remained stable across the 11 year study period. The identification of important habitat for Chilean dolphins warrants the consideration of spatially explicit conservation measures to limit the potential effects of overlapping salmon and shellfish farming. 6. The observed differences in ecological plasticity of the two sympatric species should be considered when evaluating and mitigating the effects of environmental change and ongoing anthropogenic pressures on their nearshore habitat. The estimated species–environment relationships could also be used to predict where dolphin habitat and anthropogenic activities are most likely to overlap in other parts of the species' ranges.
dc.relation.ispartofAquatic Conservation: Marine and Freshwater Ecosystemsen
dc.rightsCopyright © 2019 John Wiley & Sons, Ltd. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectCephalorhynchus eutropiaen
dc.subjectHabitat use patternen
dc.subjectLagenorhynchus australisen
dc.subjectNiche partitioningen
dc.subjectPredictive species distribution modelsen
dc.subjectGE Environmental Sciencesen
dc.subjectGC Oceanographyen
dc.subjectQH301 Biologyen
dc.subjectSH Aquaculture. Fisheries. Anglingen
dc.titleFine-scale habitat partitioning of Chilean and Peale’s dolphins and their overlap with aquacultureen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
dc.contributor.institutionUniversity of St Andrews.Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews.Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews.Centre for Research into Ecological & Environmental Modellingen
dc.description.statusPeer revieweden

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