Files in this item
Fine-scale habitat partitioning of Chilean and Peale’s dolphins and their overlap with aquaculture
Item metadata
dc.contributor.author | Heinrich, Sonja | |
dc.contributor.author | Genov, Tilen | |
dc.contributor.author | Fuentes Riquelme, Marjorie | |
dc.contributor.author | Hammond, Philip S. | |
dc.date.accessioned | 2020-09-05T23:34:17Z | |
dc.date.available | 2020-09-05T23:34:17Z | |
dc.date.issued | 2019-09-06 | |
dc.identifier | 255207509 | |
dc.identifier | 61e5a457-c136-4399-92eb-07743426ac15 | |
dc.identifier | 85071777501 | |
dc.identifier | 000484997200015 | |
dc.identifier.citation | Heinrich , 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 . https://doi.org/10.1002/aqc.3153 | en |
dc.identifier.issn | 1052-7613 | |
dc.identifier.other | ORCID: /0000-0003-4752-0348/work/61621978 | |
dc.identifier.other | ORCID: /0000-0002-2381-8302/work/61621986 | |
dc.identifier.uri | https://hdl.handle.net/10023/20552 | |
dc.description.abstract | 1. 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.format.extent | 2701741 | |
dc.language.iso | eng | |
dc.relation.ispartof | Aquatic Conservation: Marine and Freshwater Ecosystems | en |
dc.subject | Aquaculture | en |
dc.subject | Cephalorhynchus eutropia | en |
dc.subject | Habitat use pattern | en |
dc.subject | Lagenorhynchus australis | en |
dc.subject | Niche partitioning | en |
dc.subject | Predictive species distribution models | en |
dc.subject | GE Environmental Sciences | en |
dc.subject | GC Oceanography | en |
dc.subject | QH301 Biology | en |
dc.subject | SH Aquaculture. Fisheries. Angling | en |
dc.subject | NDAS | en |
dc.subject | SDG 14 - Life Below Water | en |
dc.subject.lcc | GE | en |
dc.subject.lcc | GC | en |
dc.subject.lcc | QH301 | en |
dc.subject.lcc | SH | en |
dc.title | Fine-scale habitat partitioning of Chilean and Peale’s dolphins and their overlap with aquaculture | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Biology | en |
dc.contributor.institution | University of St Andrews. Sea Mammal Research Unit | en |
dc.contributor.institution | University of St Andrews. Scottish Oceans Institute | en |
dc.contributor.institution | University of St Andrews. Marine Alliance for Science & Technology Scotland | en |
dc.contributor.institution | University of St Andrews. Centre for Research into Ecological & Environmental Modelling | en |
dc.identifier.doi | https://doi.org/10.1002/aqc.3153 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2020-09-06 |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.