Habitat preferences among three top predators inhabiting a degraded ecosystem, the Black Sea
This study investigated whether there is evidence of widespread niche partitioning based on environmental factors in the Black Sea and tested the hypothesis that physiographic factors may be employed as predictors. It addresses poorly researched areas with good habitat potential for the only three c...
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Consejo Superior de Investigaciones Científicas (España)
2017
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Online Access: | http://hdl.handle.net/10261/155729 https://doi.org/10.3989/scimar.04493.07A |
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ftcsic:oai:digital.csic.es:10261/155729 2024-02-11T10:04:33+01:00 Habitat preferences among three top predators inhabiting a degraded ecosystem, the Black Sea Sánchez-Cabanes, Alicia Nimak-Wood, Maja Harris, Nicola de Stephanis, Renaud 2017 http://hdl.handle.net/10261/155729 https://doi.org/10.3989/scimar.04493.07A unknown Consejo Superior de Investigaciones Científicas (España) Publisher's version Sí doi:10.3989/scimar.04493.07A issn: 1886-8134 Scientia Marina 81: 217- 227 (2017) http://hdl.handle.net/10261/155729 open Common dolphin Spatial modelling Niche segregation Harbour porpoise Habitat preferences GAM Bottlenose dolphins Black sea artículo http://purl.org/coar/resource_type/c_6501 2017 ftcsic https://doi.org/10.3989/scimar.04493.07A 2024-01-16T10:25:58Z This study investigated whether there is evidence of widespread niche partitioning based on environmental factors in the Black Sea and tested the hypothesis that physiographic factors may be employed as predictors. It addresses poorly researched areas with good habitat potential for the only three cetacean subspecies living in this area: the Black Sea short-beaked common dolphin (Delphinus delphis spp. ponticus), the Black Sea bottlenose dolphin (Tursiops truncatus spp. ponticus) and the Black Sea harbour porpoise (Phocoena phocoena spp. relicta). Generalized additive models (GAMs) were used to analyse data collected from multiple sources. In total, 745 sightings of the three species between 1998 and 2010 throughout the Black Sea were included. The analysis found depth and sea surface temperature to be the most important variables for separating the occurrence of the three species. Common dolphins occurred mainly in deep waters and in areas where the sea surface temperature was low, bottlenose dolphins were distributed primarily in shallower and warmer waters than common dolphins, and harbour porpoises were distributed in shallower waters with lower sea surface temperature than bottlenose dolphins. This study suggests strong niche segregation among the three cetacean species. The study is also the first contribution to the basic information of cetacean species distribution and habitat preferences in the Black Sea as a whole. Knowledge of the distribution of the three dolphin species in the study area is essential to establish conservation measures for these populations. Peer Reviewed Article in Journal/Newspaper Harbour porpoise Phocoena phocoena Digital.CSIC (Spanish National Research Council) Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) Scientia Marina 81 2 217 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Common dolphin Spatial modelling Niche segregation Harbour porpoise Habitat preferences GAM Bottlenose dolphins Black sea |
spellingShingle |
Common dolphin Spatial modelling Niche segregation Harbour porpoise Habitat preferences GAM Bottlenose dolphins Black sea Sánchez-Cabanes, Alicia Nimak-Wood, Maja Harris, Nicola de Stephanis, Renaud Habitat preferences among three top predators inhabiting a degraded ecosystem, the Black Sea |
topic_facet |
Common dolphin Spatial modelling Niche segregation Harbour porpoise Habitat preferences GAM Bottlenose dolphins Black sea |
description |
This study investigated whether there is evidence of widespread niche partitioning based on environmental factors in the Black Sea and tested the hypothesis that physiographic factors may be employed as predictors. It addresses poorly researched areas with good habitat potential for the only three cetacean subspecies living in this area: the Black Sea short-beaked common dolphin (Delphinus delphis spp. ponticus), the Black Sea bottlenose dolphin (Tursiops truncatus spp. ponticus) and the Black Sea harbour porpoise (Phocoena phocoena spp. relicta). Generalized additive models (GAMs) were used to analyse data collected from multiple sources. In total, 745 sightings of the three species between 1998 and 2010 throughout the Black Sea were included. The analysis found depth and sea surface temperature to be the most important variables for separating the occurrence of the three species. Common dolphins occurred mainly in deep waters and in areas where the sea surface temperature was low, bottlenose dolphins were distributed primarily in shallower and warmer waters than common dolphins, and harbour porpoises were distributed in shallower waters with lower sea surface temperature than bottlenose dolphins. This study suggests strong niche segregation among the three cetacean species. The study is also the first contribution to the basic information of cetacean species distribution and habitat preferences in the Black Sea as a whole. Knowledge of the distribution of the three dolphin species in the study area is essential to establish conservation measures for these populations. Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Sánchez-Cabanes, Alicia Nimak-Wood, Maja Harris, Nicola de Stephanis, Renaud |
author_facet |
Sánchez-Cabanes, Alicia Nimak-Wood, Maja Harris, Nicola de Stephanis, Renaud |
author_sort |
Sánchez-Cabanes, Alicia |
title |
Habitat preferences among three top predators inhabiting a degraded ecosystem, the Black Sea |
title_short |
Habitat preferences among three top predators inhabiting a degraded ecosystem, the Black Sea |
title_full |
Habitat preferences among three top predators inhabiting a degraded ecosystem, the Black Sea |
title_fullStr |
Habitat preferences among three top predators inhabiting a degraded ecosystem, the Black Sea |
title_full_unstemmed |
Habitat preferences among three top predators inhabiting a degraded ecosystem, the Black Sea |
title_sort |
habitat preferences among three top predators inhabiting a degraded ecosystem, the black sea |
publisher |
Consejo Superior de Investigaciones Científicas (España) |
publishDate |
2017 |
url |
http://hdl.handle.net/10261/155729 https://doi.org/10.3989/scimar.04493.07A |
long_lat |
ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
geographic |
Gam |
geographic_facet |
Gam |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_relation |
Publisher's version Sí doi:10.3989/scimar.04493.07A issn: 1886-8134 Scientia Marina 81: 217- 227 (2017) http://hdl.handle.net/10261/155729 |
op_rights |
open |
op_doi |
https://doi.org/10.3989/scimar.04493.07A |
container_title |
Scientia Marina |
container_volume |
81 |
container_issue |
2 |
container_start_page |
217 |
_version_ |
1790601186635677696 |