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METHODOLOGY FOR STUDIES OF CARBON DYNAMICS BETWEEN PHYTOPLANKTON PRIMARY PRODUCTION AND HETEROTROPHIC BACTERIAL SECONDARY PRODUCTION
LIN W; OVERBECK J; INST HYDROBIOL, ACAD SINICA, WUHAN, CHINA
1989
Source PublicationChinese Journal of Oceanology and Limnology
ISSN0254-4059
Volume7Issue:1Pages:17-32
AbstractThe SCENTO-System was used to study the carbon dynamics between phytoplankton primary production and heterotrophic bacterial secondary production. Most of the methods used nowadays in situ for limnological synecology studies were applied. Primary production measurement showed an increasing tendency with increasing content of chlorophyll a. It provided a true photosynthetic rate lying within the range of eutrophic lakes. Net EOC released from the algae ranged from 8.5 to 27.5 .mu.g C l-1 (6 h)-1. Accompanying the algal products the number of bacteria increased from 1.475 .times. 109 to 8.074 .times. 109 cells l-1. The bacterial mean cell volume was small, between 0.0315 and 0.0548 .mu.m3. Bacterial carbon production from direct growth estimates was compared with independent calculations of bacterial growth from EOC uptake and 3H-thymidine incorporation. Direct estimates were 2.97-10.0 .mu.g C l-1 (24 h)-1 with the exception of a zero-growth on the third day. EOC uptake was 123.5-191.0 .mu.g C l-1 (6 h)-1. That calculated from 3H-thymidine incorporation was 0.2 -0.5 .mu.g C l-1 (6 H)-1. 14C-glucose dark uptake ran parallel to the increasing bacterialbiomass. The respiration of glucose was 6.5% (avg.) of the gross uptake. Since the system operated without grazing pressure, a real carbon flow from primary production to bacterial secondary production could be observed.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/17679
Collection期刊论文
Corresponding AuthorLIN W; INST HYDROBIOL, ACAD SINICA, WUHAN, CHINA
Recommended Citation
GB/T 7714
LIN W,OVERBECK J,INST HYDROBIOL, ACAD SINICA, WUHAN, CHINA. METHODOLOGY FOR STUDIES OF CARBON DYNAMICS BETWEEN PHYTOPLANKTON PRIMARY PRODUCTION AND HETEROTROPHIC BACTERIAL SECONDARY PRODUCTION[J]. Chinese Journal of Oceanology and Limnology,1989,7(1):17-32.
APA LIN W,OVERBECK J,&INST HYDROBIOL, ACAD SINICA, WUHAN, CHINA.(1989).METHODOLOGY FOR STUDIES OF CARBON DYNAMICS BETWEEN PHYTOPLANKTON PRIMARY PRODUCTION AND HETEROTROPHIC BACTERIAL SECONDARY PRODUCTION.Chinese Journal of Oceanology and Limnology,7(1),17-32.
MLA LIN W,et al."METHODOLOGY FOR STUDIES OF CARBON DYNAMICS BETWEEN PHYTOPLANKTON PRIMARY PRODUCTION AND HETEROTROPHIC BACTERIAL SECONDARY PRODUCTION".Chinese Journal of Oceanology and Limnology 7.1(1989):17-32.
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