Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007
In oceans worldwide, chaetognaths are the second most dominant zooplankton taxa and have vital transfer roles between herbivores and higher trophic organisms. Despite the chaetognath's importance, little is known regarding their ecology in the Chukchi Sea, where recent ice reduction is prominen...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/80534 2023-05-15T14:58:39+02:00 Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007 Amano, Karen Abe, Yoshiyuki Matsuno, Kohei Yamaguchi, Atsushi http://hdl.handle.net/2115/80534 https://doi.org/10.1016/j.polar.2018.11.011 eng eng Elsevier http://hdl.handle.net/2115/80534 Polar Science, 19: 112-119 http://dx.doi.org/10.1016/j.polar.2018.11.011 © 2019, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Chaetognaths Parasagitta elegans Eukrohnia hamata Chukchi sea 660 article (author version) fthokunivhus https://doi.org/10.1016/j.polar.2018.11.011 2022-11-18T01:05:19Z In oceans worldwide, chaetognaths are the second most dominant zooplankton taxa and have vital transfer roles between herbivores and higher trophic organisms. Despite the chaetognath's importance, little is known regarding their ecology in the Chukchi Sea, where recent ice reduction is prominent in the Arctic Ocean. We made comparisons of the chaetognath abundance, biomass, community structure (total length and gonadal maturation) and feeding impacts between the years 1991 and 2007. Within the chaetognath community, Parasagitta elegans was the abundant species, and Eukrohnia hamata only occurred in the southern region in 2007. Yearly differences were detected in chaetognath abundance, biomass, total length and gonadal maturation. All of these parameters were greater and more advanced in 1991 than in 2007. The most prominent yearly differences were in the horizontal distributions of chaetognaths, primarily in the northern region in 1991 and the southern region in 2007. The southern chaetognath populations observed in 2007 were considered to be transported by the Pacific water through the Bering Strait. Because of the differences in the original populations between the Chukchi Sea in 1991 and the Bering Sea in 2007, differences in these two years may be due to regional differences. As the Arctic warms, the horizontal distribution pattern, similar with 2007 in this study, will be more pronounced. Article in Journal/Newspaper Arctic Arctic Ocean Bering Sea Bering Strait Chukchi Chukchi Sea Polar Science Polar Science Zooplankton Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Arctic Arctic Ocean Bering Sea Chukchi Sea Bering Strait Pacific Polar Science 19 112 119 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Chaetognaths Parasagitta elegans Eukrohnia hamata Chukchi sea 660 |
spellingShingle |
Chaetognaths Parasagitta elegans Eukrohnia hamata Chukchi sea 660 Amano, Karen Abe, Yoshiyuki Matsuno, Kohei Yamaguchi, Atsushi Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007 |
topic_facet |
Chaetognaths Parasagitta elegans Eukrohnia hamata Chukchi sea 660 |
description |
In oceans worldwide, chaetognaths are the second most dominant zooplankton taxa and have vital transfer roles between herbivores and higher trophic organisms. Despite the chaetognath's importance, little is known regarding their ecology in the Chukchi Sea, where recent ice reduction is prominent in the Arctic Ocean. We made comparisons of the chaetognath abundance, biomass, community structure (total length and gonadal maturation) and feeding impacts between the years 1991 and 2007. Within the chaetognath community, Parasagitta elegans was the abundant species, and Eukrohnia hamata only occurred in the southern region in 2007. Yearly differences were detected in chaetognath abundance, biomass, total length and gonadal maturation. All of these parameters were greater and more advanced in 1991 than in 2007. The most prominent yearly differences were in the horizontal distributions of chaetognaths, primarily in the northern region in 1991 and the southern region in 2007. The southern chaetognath populations observed in 2007 were considered to be transported by the Pacific water through the Bering Strait. Because of the differences in the original populations between the Chukchi Sea in 1991 and the Bering Sea in 2007, differences in these two years may be due to regional differences. As the Arctic warms, the horizontal distribution pattern, similar with 2007 in this study, will be more pronounced. |
format |
Article in Journal/Newspaper |
author |
Amano, Karen Abe, Yoshiyuki Matsuno, Kohei Yamaguchi, Atsushi |
author_facet |
Amano, Karen Abe, Yoshiyuki Matsuno, Kohei Yamaguchi, Atsushi |
author_sort |
Amano, Karen |
title |
Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007 |
title_short |
Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007 |
title_full |
Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007 |
title_fullStr |
Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007 |
title_full_unstemmed |
Yearly comparison of the planktonic chaetognath community in the Chukchi Sea in the summers of 1991 and 2007 |
title_sort |
yearly comparison of the planktonic chaetognath community in the chukchi sea in the summers of 1991 and 2007 |
publisher |
Elsevier |
url |
http://hdl.handle.net/2115/80534 https://doi.org/10.1016/j.polar.2018.11.011 |
geographic |
Arctic Arctic Ocean Bering Sea Chukchi Sea Bering Strait Pacific |
geographic_facet |
Arctic Arctic Ocean Bering Sea Chukchi Sea Bering Strait Pacific |
genre |
Arctic Arctic Ocean Bering Sea Bering Strait Chukchi Chukchi Sea Polar Science Polar Science Zooplankton |
genre_facet |
Arctic Arctic Ocean Bering Sea Bering Strait Chukchi Chukchi Sea Polar Science Polar Science Zooplankton |
op_relation |
http://hdl.handle.net/2115/80534 Polar Science, 19: 112-119 http://dx.doi.org/10.1016/j.polar.2018.11.011 |
op_rights |
© 2019, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.polar.2018.11.011 |
container_title |
Polar Science |
container_volume |
19 |
container_start_page |
112 |
op_container_end_page |
119 |
_version_ |
1766330779705540608 |