Quantitative distribution and feeding of euphausiids in the Okhotsk Sea
Euphausia in the Okhotsk Sea is one of the most abundant groups of zooplankton, its portion in the total zooplankton biomass in the epipelagic layer is 25.4-37.4 %, depending on season, the total stock is 83.2 · 106 t in spring, 66.3 · 106 t in summer, 57.4 · 106 t in autumn, and 73.3 · 106 t in win...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2016-06-01
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| Series: | Известия ТИНРО |
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| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/113 |
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| author | Konstantin M. Gorbatenko |
| author_facet | Konstantin M. Gorbatenko |
| author_sort | Konstantin M. Gorbatenko |
| collection | DOAJ |
| description | Euphausia in the Okhotsk Sea is one of the most abundant groups of zooplankton, its portion in the total zooplankton biomass in the epipelagic layer is 25.4-37.4 %, depending on season, the total stock is 83.2 · 106 t in spring, 66.3 · 106 t in summer, 57.4 · 106 t in autumn, and 73.3 · 106 t in winter (mean assessments for 1986-2012). The highest biomass is observed in spring - 369 mg/m3, on average, and the minimum one in autumn - 256 mg/m3, on average. Two species, Thysanoessa raschii and Thysanoessa longipes , are the most abundant. Year-to-year fluctuations of Euphausia abundance are prominent: up to 5 times, but it never causes any catastrophic change in their populations. Sharp declines usually are followed by sharp rises in their number. Mean daily ration of euphausiid in the Okhotsk Sea is 7.5-8.5 % of the body weight. Annually they consume 2012.7 · 106 t of prey, including 1636.5 · 106 t of phytoplankton and 341.8 · 106 t of micro-heterotrophs. About 11.4 % of the annual production of phytoplankton and 26.0 % of the annual production of micro-heterotrophs are grazed by euphausiids. |
| format | Article |
| id | doaj-art-63657b00eacd45f1bc349e6ae9d3a7a3 |
| institution | Kabale University |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| publishDate | 2016-06-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj-art-63657b00eacd45f1bc349e6ae9d3a7a32025-08-20T03:39:48ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102016-06-01185220421410.26428/1606-9919-2016-185-204-214113Quantitative distribution and feeding of euphausiids in the Okhotsk SeaKonstantin M. Gorbatenko0Тихоокеанский научно-исследовательский рыбохозяйственный центрEuphausia in the Okhotsk Sea is one of the most abundant groups of zooplankton, its portion in the total zooplankton biomass in the epipelagic layer is 25.4-37.4 %, depending on season, the total stock is 83.2 · 106 t in spring, 66.3 · 106 t in summer, 57.4 · 106 t in autumn, and 73.3 · 106 t in winter (mean assessments for 1986-2012). The highest biomass is observed in spring - 369 mg/m3, on average, and the minimum one in autumn - 256 mg/m3, on average. Two species, Thysanoessa raschii and Thysanoessa longipes , are the most abundant. Year-to-year fluctuations of Euphausia abundance are prominent: up to 5 times, but it never causes any catastrophic change in their populations. Sharp declines usually are followed by sharp rises in their number. Mean daily ration of euphausiid in the Okhotsk Sea is 7.5-8.5 % of the body weight. Annually they consume 2012.7 · 106 t of prey, including 1636.5 · 106 t of phytoplankton and 341.8 · 106 t of micro-heterotrophs. About 11.4 % of the annual production of phytoplankton and 26.0 % of the annual production of micro-heterotrophs are grazed by euphausiids.https://izvestiya.tinro-center.ru/jour/article/view/113zooplankton distributionfeedingbiomassdynamics of zooplanktoneuphausiidokhotsk sea |
| spellingShingle | Konstantin M. Gorbatenko Quantitative distribution and feeding of euphausiids in the Okhotsk Sea Известия ТИНРО zooplankton distribution feeding biomass dynamics of zooplankton euphausiid okhotsk sea |
| title | Quantitative distribution and feeding of euphausiids in the Okhotsk Sea |
| title_full | Quantitative distribution and feeding of euphausiids in the Okhotsk Sea |
| title_fullStr | Quantitative distribution and feeding of euphausiids in the Okhotsk Sea |
| title_full_unstemmed | Quantitative distribution and feeding of euphausiids in the Okhotsk Sea |
| title_short | Quantitative distribution and feeding of euphausiids in the Okhotsk Sea |
| title_sort | quantitative distribution and feeding of euphausiids in the okhotsk sea |
| topic | zooplankton distribution feeding biomass dynamics of zooplankton euphausiid okhotsk sea |
| url | https://izvestiya.tinro-center.ru/jour/article/view/113 |
| work_keys_str_mv | AT konstantinmgorbatenko quantitativedistributionandfeedingofeuphausiidsintheokhotsksea |