Changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient
Abstract Understanding how fish distributions may change in response to environmental variability is important for effective management of fish populations, as predicted climate change will likely alter their habitat use and population dynamics. This research focused on two commercially- and ecologi...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsw112 http://academic.oup.com/icesjms/article-pdf/73/7/1875/31231546/fsw112.pdf |
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croxfordunivpr:10.1093/icesjms/fsw112 2024-10-13T14:06:23+00:00 Changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient Vestfals, Cathleen D. Ciannelli, Lorenzo Hoff, Gerald R. 2016 http://dx.doi.org/10.1093/icesjms/fsw112 http://academic.oup.com/icesjms/article-pdf/73/7/1875/31231546/fsw112.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 73, issue 7, page 1875-1889 ISSN 1095-9289 1054-3139 journal-article 2016 croxfordunivpr https://doi.org/10.1093/icesjms/fsw112 2024-09-24T04:07:49Z Abstract Understanding how fish distributions may change in response to environmental variability is important for effective management of fish populations, as predicted climate change will likely alter their habitat use and population dynamics. This research focused on two commercially- and ecologically-important flatfish species in the eastern Bering Sea (EBS), Greenland halibut ( Reinhardtius hippoglossoides ) and Pacific halibut ( Hippoglossus stenolepis ), which may be especially sensitive to climate-induced shifts in habitat due to strong seasonally and ontogenetically variable distributions. We analysed data from fishery-dependent and fishery-independent sources to determine how environmental variability influenced habitat use, thus gaining a uniquely comprehensive range of seasonal and geographic coverage of each species’ distribution. Greenland and Pacific halibut exhibited strong and contrasting responses to changes in temperature on the shelf, with catches decreasing and increasing, respectively, beyond 1 °C. The effect of temperature was not as prominent along the slope, suggesting that slope habitats may provide some insulation from shelf-associated environmental variability, particularly for Greenland halibut. With warming, Greenland halibut exhibited more of a bathymetric shift in distribution, while the shift was more latitudinal for Pacific halibut. Our results suggest that habitat partitioning may, in part, explain differences in Greenland and Pacific halibut distributions. This research adds to our understanding of how the distributions of two fish species at opposite extremes of their ranges in the EBS – Greenland halibut at the southernmost edge and Pacific halibut at the northernmost edge – may shift in relation to a changing ocean environment. Article in Journal/Newspaper Bering Sea Greenland Oxford University Press Bering Sea Greenland Pacific ICES Journal of Marine Science 73 7 1875 1889 |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Understanding how fish distributions may change in response to environmental variability is important for effective management of fish populations, as predicted climate change will likely alter their habitat use and population dynamics. This research focused on two commercially- and ecologically-important flatfish species in the eastern Bering Sea (EBS), Greenland halibut ( Reinhardtius hippoglossoides ) and Pacific halibut ( Hippoglossus stenolepis ), which may be especially sensitive to climate-induced shifts in habitat due to strong seasonally and ontogenetically variable distributions. We analysed data from fishery-dependent and fishery-independent sources to determine how environmental variability influenced habitat use, thus gaining a uniquely comprehensive range of seasonal and geographic coverage of each species’ distribution. Greenland and Pacific halibut exhibited strong and contrasting responses to changes in temperature on the shelf, with catches decreasing and increasing, respectively, beyond 1 °C. The effect of temperature was not as prominent along the slope, suggesting that slope habitats may provide some insulation from shelf-associated environmental variability, particularly for Greenland halibut. With warming, Greenland halibut exhibited more of a bathymetric shift in distribution, while the shift was more latitudinal for Pacific halibut. Our results suggest that habitat partitioning may, in part, explain differences in Greenland and Pacific halibut distributions. This research adds to our understanding of how the distributions of two fish species at opposite extremes of their ranges in the EBS – Greenland halibut at the southernmost edge and Pacific halibut at the northernmost edge – may shift in relation to a changing ocean environment. |
format |
Article in Journal/Newspaper |
author |
Vestfals, Cathleen D. Ciannelli, Lorenzo Hoff, Gerald R. |
spellingShingle |
Vestfals, Cathleen D. Ciannelli, Lorenzo Hoff, Gerald R. Changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient |
author_facet |
Vestfals, Cathleen D. Ciannelli, Lorenzo Hoff, Gerald R. |
author_sort |
Vestfals, Cathleen D. |
title |
Changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient |
title_short |
Changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient |
title_full |
Changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient |
title_fullStr |
Changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient |
title_full_unstemmed |
Changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient |
title_sort |
changes in habitat utilization of slope-spawning flatfish across a bathymetric gradient |
publisher |
Oxford University Press (OUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1093/icesjms/fsw112 http://academic.oup.com/icesjms/article-pdf/73/7/1875/31231546/fsw112.pdf |
geographic |
Bering Sea Greenland Pacific |
geographic_facet |
Bering Sea Greenland Pacific |
genre |
Bering Sea Greenland |
genre_facet |
Bering Sea Greenland |
op_source |
ICES Journal of Marine Science volume 73, issue 7, page 1875-1889 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsw112 |
container_title |
ICES Journal of Marine Science |
container_volume |
73 |
container_issue |
7 |
container_start_page |
1875 |
op_container_end_page |
1889 |
_version_ |
1812812539059240960 |