PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017)
Two periods are clearly distinguished within the last two decades (1997–2017) by several quantitative parameters of the plankton community in the northern shelf zone of the Okhotsk Sea: the period of high productivity in the 1997–2005 with the biomass of 1000–1200 mg/m3 and the period of medium prod...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
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Online Access: | https://doi.org/10.26428/1606-9919-2018-192-121-135 https://doaj.org/article/6ec426eab6d44b94b44f0e8afcafcf3d |
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ftdoajarticles:oai:doaj.org/article:6ec426eab6d44b94b44f0e8afcafcf3d 2023-10-09T21:54:59+02:00 PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017) A. F. Volkov 2018-03-01T00:00:00Z https://doi.org/10.26428/1606-9919-2018-192-121-135 https://doaj.org/article/6ec426eab6d44b94b44f0e8afcafcf3d RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/362 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2018-192-121-135 https://doaj.org/article/6ec426eab6d44b94b44f0e8afcafcf3d Известия ТИНРО, Vol 192, Iss 1, Pp 121-135 (2018) охотское море ледовитость планктон фитопланктон зоопланктон нектон копеподы эвфаузииды гиперииды сагитты Aquaculture. Fisheries. Angling SH1-691 article 2018 ftdoajarticles https://doi.org/10.26428/1606-9919-2018-192-121-135 2023-09-10T00:44:26Z Two periods are clearly distinguished within the last two decades (1997–2017) by several quantitative parameters of the plankton community in the northern shelf zone of the Okhotsk Sea: the period of high productivity in the 1997–2005 with the biomass of 1000–1200 mg/m3 and the period of medium productivity in the 2006–2017 with the biomass of 550–580 mg/m3. The sharp drop of the biomass had occurred in just one year because of decreasing of the large-sized zooplankton abundance (euphausiids, mysids, hyperiids, and pteropods) that formed the bulk of the food base for commercial species of nekton. After the drop, the plankton biomass had stabilized again. The similar decreasing was observed earlier, in 1998, as the result of several warm years, but in those times the zooplankton abundance restored its maximal values in 2 years. Correlations of the large-sized zooplankton dynamics with the thermal parameters, as the cold subsurface layer temperature and the maximum and mean values of the ice cover are considered. Generally, the period of high productivity was distinguished by cold environments, and they were warmer in the period of medium productivity. Article in Journal/Newspaper okhotsk sea Directory of Open Access Journals: DOAJ Articles Okhotsk Izvestiya TINRO 192 121 135 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
охотское море ледовитость планктон фитопланктон зоопланктон нектон копеподы эвфаузииды гиперииды сагитты Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
охотское море ледовитость планктон фитопланктон зоопланктон нектон копеподы эвфаузииды гиперииды сагитты Aquaculture. Fisheries. Angling SH1-691 A. F. Volkov PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017) |
topic_facet |
охотское море ледовитость планктон фитопланктон зоопланктон нектон копеподы эвфаузииды гиперииды сагитты Aquaculture. Fisheries. Angling SH1-691 |
description |
Two periods are clearly distinguished within the last two decades (1997–2017) by several quantitative parameters of the plankton community in the northern shelf zone of the Okhotsk Sea: the period of high productivity in the 1997–2005 with the biomass of 1000–1200 mg/m3 and the period of medium productivity in the 2006–2017 with the biomass of 550–580 mg/m3. The sharp drop of the biomass had occurred in just one year because of decreasing of the large-sized zooplankton abundance (euphausiids, mysids, hyperiids, and pteropods) that formed the bulk of the food base for commercial species of nekton. After the drop, the plankton biomass had stabilized again. The similar decreasing was observed earlier, in 1998, as the result of several warm years, but in those times the zooplankton abundance restored its maximal values in 2 years. Correlations of the large-sized zooplankton dynamics with the thermal parameters, as the cold subsurface layer temperature and the maximum and mean values of the ice cover are considered. Generally, the period of high productivity was distinguished by cold environments, and they were warmer in the period of medium productivity. |
format |
Article in Journal/Newspaper |
author |
A. F. Volkov |
author_facet |
A. F. Volkov |
author_sort |
A. F. Volkov |
title |
PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017) |
title_short |
PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017) |
title_full |
PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017) |
title_fullStr |
PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017) |
title_full_unstemmed |
PRESENT STATE OF THE SPRING PLANKTON COMMUNITY IN THE NORTHERN OKHOTSK SEA (1997–2017) |
title_sort |
present state of the spring plankton community in the northern okhotsk sea (1997–2017) |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2018 |
url |
https://doi.org/10.26428/1606-9919-2018-192-121-135 https://doaj.org/article/6ec426eab6d44b94b44f0e8afcafcf3d |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
okhotsk sea |
genre_facet |
okhotsk sea |
op_source |
Известия ТИНРО, Vol 192, Iss 1, Pp 121-135 (2018) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/362 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2018-192-121-135 https://doaj.org/article/6ec426eab6d44b94b44f0e8afcafcf3d |
op_doi |
https://doi.org/10.26428/1606-9919-2018-192-121-135 |
container_title |
Izvestiya TINRO |
container_volume |
192 |
container_start_page |
121 |
op_container_end_page |
135 |
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1779318755090759680 |