Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics
Abstract Little is known about the dynamics of marine food chains spanning primary to higher trophic levels on centennial and longer timescales, especially where the supply of dissolved iron limits primary productivity. To elucidate the long-term dynamics of biological productivity in the Coastal Oy...
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Cambridge University Press (CUP)
2022
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Online Access: | http://dx.doi.org/10.1017/qua.2021.71 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589421000715 |
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crcambridgeupr:10.1017/qua.2021.71 2024-03-03T08:47:40+00:00 Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics Kuwae, Michinobu Tsugeki, Narumi Finney, Bruce P. Tani, Yukinori Onodera, Jonaotaro Kiyoto, Mako Kusaka, Mitsukuni Sagawa, Takuya Nakamura, Yugo Ohnishi, Hiroji Kuroda, Hiroshi Okuda, Noboru Ohta, Tamihisa Ikehara, Minoru Irino, Tomohisa 2022 http://dx.doi.org/10.1017/qua.2021.71 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589421000715 en eng Cambridge University Press (CUP) https://creativecommons.org/licenses/by/4.0/ Quaternary Research volume 107, page 27-42 ISSN 0033-5894 1096-0287 General Earth and Planetary Sciences Earth-Surface Processes Arts and Humanities (miscellaneous) journal-article 2022 crcambridgeupr https://doi.org/10.1017/qua.2021.71 2024-02-08T08:26:11Z Abstract Little is known about the dynamics of marine food chains spanning primary to higher trophic levels on centennial and longer timescales, especially where the supply of dissolved iron limits primary productivity. To elucidate the long-term dynamics of biological productivity in the Coastal Oyashio (CO), which is a major pathway for transporting dissolved iron into the western North Pacific from winter to spring, we reconstructed the lower trophic level productivity over the last 3000 years in the CO. Our results demonstrate that the concentrations and mass accumulation rates of both Chl- a (chlorophyll a and its derivatives) and biogenic opal used as proxies of primary productivity, and steryl chlorin esters (SCEs) used as that of zooplankton productivity, show a millennial-scale increasing trend and centennial-scale variability beginning ca. AD 400. SCEs were positively correlated with Chl- a , indicating that changes in zooplankton productivity were induced by bottom-up control of primary productivity. The Chl- a and SCEs showed synchronous centennial-scale patterns with a relative abundance of sea-ice-associated diatom species transported by CO, and with a ventilation index in the Okhotsk Sea Intermediate Water. This synchronous pattern indicates that lower trophic-level productivity during the spring bloom responded to the intensity of iron-replete CO. Article in Journal/Newspaper okhotsk sea Sea ice Cambridge University Press Okhotsk Oyashio ENVELOPE(157.000,157.000,50.000,50.000) Pacific Quaternary Research 1 16 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Earth-Surface Processes Arts and Humanities (miscellaneous) |
spellingShingle |
General Earth and Planetary Sciences Earth-Surface Processes Arts and Humanities (miscellaneous) Kuwae, Michinobu Tsugeki, Narumi Finney, Bruce P. Tani, Yukinori Onodera, Jonaotaro Kiyoto, Mako Kusaka, Mitsukuni Sagawa, Takuya Nakamura, Yugo Ohnishi, Hiroji Kuroda, Hiroshi Okuda, Noboru Ohta, Tamihisa Ikehara, Minoru Irino, Tomohisa Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics |
topic_facet |
General Earth and Planetary Sciences Earth-Surface Processes Arts and Humanities (miscellaneous) |
description |
Abstract Little is known about the dynamics of marine food chains spanning primary to higher trophic levels on centennial and longer timescales, especially where the supply of dissolved iron limits primary productivity. To elucidate the long-term dynamics of biological productivity in the Coastal Oyashio (CO), which is a major pathway for transporting dissolved iron into the western North Pacific from winter to spring, we reconstructed the lower trophic level productivity over the last 3000 years in the CO. Our results demonstrate that the concentrations and mass accumulation rates of both Chl- a (chlorophyll a and its derivatives) and biogenic opal used as proxies of primary productivity, and steryl chlorin esters (SCEs) used as that of zooplankton productivity, show a millennial-scale increasing trend and centennial-scale variability beginning ca. AD 400. SCEs were positively correlated with Chl- a , indicating that changes in zooplankton productivity were induced by bottom-up control of primary productivity. The Chl- a and SCEs showed synchronous centennial-scale patterns with a relative abundance of sea-ice-associated diatom species transported by CO, and with a ventilation index in the Okhotsk Sea Intermediate Water. This synchronous pattern indicates that lower trophic-level productivity during the spring bloom responded to the intensity of iron-replete CO. |
format |
Article in Journal/Newspaper |
author |
Kuwae, Michinobu Tsugeki, Narumi Finney, Bruce P. Tani, Yukinori Onodera, Jonaotaro Kiyoto, Mako Kusaka, Mitsukuni Sagawa, Takuya Nakamura, Yugo Ohnishi, Hiroji Kuroda, Hiroshi Okuda, Noboru Ohta, Tamihisa Ikehara, Minoru Irino, Tomohisa |
author_facet |
Kuwae, Michinobu Tsugeki, Narumi Finney, Bruce P. Tani, Yukinori Onodera, Jonaotaro Kiyoto, Mako Kusaka, Mitsukuni Sagawa, Takuya Nakamura, Yugo Ohnishi, Hiroji Kuroda, Hiroshi Okuda, Noboru Ohta, Tamihisa Ikehara, Minoru Irino, Tomohisa |
author_sort |
Kuwae, Michinobu |
title |
Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics |
title_short |
Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics |
title_full |
Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics |
title_fullStr |
Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics |
title_full_unstemmed |
Late Holocene centennial to millennial-scale variability in lower trophic level productivity off southern Hokkaido, Japan, and its response to dissolved iron-replete Coastal Oyashio dynamics |
title_sort |
late holocene centennial to millennial-scale variability in lower trophic level productivity off southern hokkaido, japan, and its response to dissolved iron-replete coastal oyashio dynamics |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/qua.2021.71 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589421000715 |
long_lat |
ENVELOPE(157.000,157.000,50.000,50.000) |
geographic |
Okhotsk Oyashio Pacific |
geographic_facet |
Okhotsk Oyashio Pacific |
genre |
okhotsk sea Sea ice |
genre_facet |
okhotsk sea Sea ice |
op_source |
Quaternary Research volume 107, page 27-42 ISSN 0033-5894 1096-0287 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/qua.2021.71 |
container_title |
Quaternary Research |
container_start_page |
1 |
op_container_end_page |
16 |
_version_ |
1792503917712506880 |