Apparent Dominance of Regenerated Primary Production in the Yellow Sea KCI OTHER

Title
Apparent Dominance of Regenerated Primary Production in the Yellow Sea
Alternative Title
Apparent Dominance of Regenerated Primary Production in the Yellow Sea
Author(s)
박명길; 양성렬; 심재형; 홍기훈; 정창수; 양동범; 조병철
KIOST Author(s)
Chung, Chang Soo(정창수)
Publication Year
2004-03
Abstract
The Yellow Sea is known to be a very productive region in terms of fisheries. However, its trophic status seems to be highly variable, ranging from oligotrophic to eutrophic, based on new production (NP) values. The NP and regenerated production (RP) values estimated from 15N -labelled nitrate and ammonium uptake in spring (April 1996) and winter (February 1997) during this study ranged from 0.05 to 19.8 mg Nm−2d−1 and from 0.1 to 22.8 mg Nm−2d−1 , respectively. Our measurements and earlier observations suggested that NP in the Yellow Sea varied over the four orders of magnitude (range 0.05-180.9 mg Nm−2d−1 ) temporally and spatially, and that RP (range 0.1-507.5 mg Nm−2d−l ) based on ammonium predominated during most period of the year, except in winter when both productions were low. The significant nitrogen uptake by phytoplankton below the euphotic zone and episodic entrainment of phytoplankton from below the euphotic zone into the euphotic zone, and nitrite excretion and dissolved organic nitrogen release during nitrate uptake might explain the apparent dominance of RP in the Yellow Sea.
ISSN
1226-2978
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5297
Bibliographic Citation
바다, v.39, no.1, pp.20 - 25, 2004
Publisher
한국해양학회
Keywords
Regenerated Production; New Production; Yellow Sea.
Type
Article
Language
English
Publisher
한국해양학회
Related Researcher
Research Interests

Marine environmentology,Management of marine environment,Marine pollution,해양환경학,해양환경관리,해양오염

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