Benthic foraminiferal assemblages as indicators of recent environmental conditions in the northeastern east siberian
- Authors: Ovsepyan E.A.1, Ovsepyan Y.S.1,2, Mitrofanova N.O.1,2, Korsun S.A.1, Rhee T.S.3, Jin Y.K.3
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Affiliations:
- Shirshov Institute of Oceanology Russian Academy of Sciences
- Geological Institute Russian Academy of Sciences
- Korea Polar Research Institute
- Issue: Vol 64, No 5 (2024)
- Pages: 792-806
- Section: Морская биология
- URL: https://journal-vniispk.ru/0030-1574/article/view/281376
- DOI: https://doi.org/10.31857/S0030157424050054
- EDN: https://elibrary.ru/OFXRMP
- ID: 281376
Cite item
Abstract
Quantitative analyses of species composition and abundance of benthic foraminifers in the surface samples on the submeridional profile in the northeastern East Siberian Sea reveal three assemblages associated to the middle-outer shelf, upper and middle continental slope. Maximum abundance of “living” benthic foraminifers is found near the shelf break which is possibly related to enhanced sea surface bioproductivity. Active dissolution of calcareous microfossils is detected at the shelf area whereas preservation of calcareous tests becomes better with depth. Some micropaleontological and grain-size data indirectly point to the development of compensatory currents on the middle-outer shelf in the East Siberian Sea.
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About the authors
E. A. Ovsepyan
Shirshov Institute of Oceanology Russian Academy of Sciences
Author for correspondence.
Email: eovsepyan@ocean.ru
Russian Federation, Moscow
Ya. S. Ovsepyan
Shirshov Institute of Oceanology Russian Academy of Sciences; Geological Institute Russian Academy of Sciences
Email: yaovsepyan@yandex.ru
Russian Federation, Moscow; Moscow
N. O. Mitrofanova
Shirshov Institute of Oceanology Russian Academy of Sciences; Geological Institute Russian Academy of Sciences
Email: eovsepyan@ocean.ru
Russian Federation, Moscow; Moscow
S. A. Korsun
Shirshov Institute of Oceanology Russian Academy of Sciences
Email: eovsepyan@ocean.ru
Russian Federation, Moscow
T. S. Rhee
Korea Polar Research Institute
Email: eovsepyan@ocean.ru
Korea, Republic of, Incheon
Y. K. Jin
Korea Polar Research Institute
Email: eovsepyan@ocean.ru
Korea, Republic of, Incheon
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