| AMMONIUM UPTAKE AND REGENERATION FLUXES OF THE MICROPLANKTON COMMUNITIES IN JIAOZHOU BAY |
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| 作者姓名： | 焦念志 王荣 |
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| 作者单位： | Institute of Oceanology，Chinese Academy of Sciences，Qingdao 266071 |
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| 基金项目： | Contribution No.2186 from the Institute of Oceanology.Chinese Academy of Sciences This project was supported by the NNSFC,Grant No,39200022. |
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| 摘 要： | The results from four cruises(Nov.1991—Jul.1992)to examine fluxes of ammonium uptake andregeneration in the surface layer of Jiaozhou Bay are presented.Seasonal variations of the two fluxeswere in the order:summer>spring>autumn>winter.Diel patterns were characterized by higher uptake inthe daytime and higher regeneration at night.Averaged uptake and regeneration fluxes on an annual scalewere 0.073 and 0.053 μmol·L~(-1)·h~(-1)respectively.Regeneration fluxes were always less than uptakefluxes throughout the year.The longest turnover time was 16.34 d(in winter),and the shortest one was0.68 d(in summer).The major uptake flux was contributed by the smallest fraction-picoplankton.Theextents of light-dependence of ammouium uptake by different size fractions were in the order:netplankton>nanoplankton>picoplankton..
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| 收稿时间： | 28 September 1992 |
Ammonium uptake and regeneration fluxes of the microplankton communities in Jiaozhou Bay |
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| Jiao Nian-zhi,Wang Rong.AMMONIUM UPTAKE AND REGENERATION FLUXES OF THE MICROPLANKTON COMMUNITIES IN JIAOZHOU BAY[J].Chinese Journal of Oceanology and Limnology,1994,12(2):165-174. |
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| Authors: | Jiao Nian-zhi Wang Rong |
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| Institution: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao |
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| Abstract: | The results from four cruises (Nov. 1991–Jul. 1992) to examine fluxes of ammonium uptake and regeneration in the surface layer
of Jiaozhou Bay are presented. Seasonal variations of the two fluxes were in the order, summer>spring>autumn>winter. Diel
patterns were characterized by higher uptake in the daytime and higher regeneration at night. Averaged uptake and regeneration
fluxes on an annual scale were 0.073 and 0.053 μmol·L−1·h−1 respectively. Regeneration fluxes were always less than uptake fluxes throughout the year. The longest turnover time was
16.34 d (in winter), and the shortest one was 0.68 d (in summer). The major uptake flux was contributed by the smallest fraction-picoplankton.
The extents of light-dependence of ammouium uptake by different size fractions were in the order: netplankton>nanoplankton>picoplankton.
Contribution No. 2186 from the Institute of Oceanology, Chinese Academy of Sciences
This project was supported by the NNSFC, Grant No. 39200022. |
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| Keywords: | ammonium uptake and regeneration microplankton Jiaozhou Bay |
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