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海洋初级生产过程中原核生物和真核生物的作用
焦念志, 王荣, 李超伦, 吉鹏
中国科学院海洋研究所青岛 266071

摘要:

于1992年8月 - 1993年5月，运用生物抑制剂方法和¹⁴C, ¹⁵N同位素示踪方法研究胶州湾表层水中小于200 μm的浮游生物群落中原核生物和真核生物对初级生产力的贡献，以及在硝态氮（NO₃^--N）、氨态氮（NH₄⁺-N）和氨基酸氮（AA－N）吸收中的作用。结果表明，原核生物在总初级生产力中占有相当比重（16.38％ - 41.00％）．NO₃^--N主要由真核生物所吸收（64.86％ - 87.28％），而NH₄⁺-N和AA－N则主要由原核生物所吸收（分别占总吸收量的47.61％ - 71.28％和48.15％ - 80.54％）。

关键词: 原核生物真核生物初级生产力氮吸收

DOI：

分类号:

基金项目:国家自然科学基金资助，39200022号

THE ROLES OF PROKARYOTE AND EUKARYOTE IN MARINE PRIMARY PRODUCTION PROCESSES

Jiao Nianzhi, Wang Rong, Li Chaolun, Ji Peng

Institute of Occanology. Academia Sinica, Qingdao 266071

Abstract:

Contributions of prokaryote and eukaryote to total microplankton assemblages less than 200 μm in primary production and nitrogen uptakes were studied seasonally by antibiotic treatment and ¹⁴C, ¹⁵N tracer techniques in the central part of Jiaozhou Bay from Aug. 1992 to May 1993. The results showed that prokaryotic organisms played a not ignorable role in primary production processes, accounting for 16.38% - 41.00% of the total primary production, 47.61% - 71.28% of NH₄⁺-N uptake and 48.15% - 80.54% of AA-N uptake. The bulk of NO₃^--N, on the other hand, was uptaken mainly by eukaryotic organism (64.86% - 87.28%). Some concepts and methods associated with nitrogen uptake by prokaryote are also discussed.

Key words: Prokaryote, Eukaryote, Primary production, Nitrogen uptake

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