SEASONAL-CHANGES IN THE PLANKTON DYNAMICS OF A EUTROPHIC LAKE INCLUDING THE MICROBIAL WEB

被引:34
作者
NIXDORF, B [1 ]
ARNDT, H [1 ]
机构
[1] INST LIMNOL,DEPT MONDSEE,A-5310 MONDSEE,AUSTRIA
来源
INTERNATIONALE REVUE DER GESAMTEN HYDROBIOLOGIE | 1993年 / 78卷 / 03期
关键词
ALGAL AND BACTERIAL PRODUCTION; EXUDATION; BACTIVOROUS METAZOANS AND PROTOZOANS; MICROBIAL WEB; FEEDING RATE;
D O I
10.1002/iroh.19930780309
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
During 1989 and 1990 the carbon dynamics in the shallow eutrophic Lake Muggelsee (Berlin) were investigated by analysing the seasonal succession of phytoplankton, metazooplankton, protozooplankton and bacteria. Size fractionated algal primary production and exudation were measured as well as bacterial production in order to calculate the amount of carbon covering the bacterial carbon demand by primary production. The impact of bacterivorous protozoans and metazoans was estimated by comparison of the calculated feeding rate and the bacterial production. Our results show a shift within the metabolic interactions of the microbial food web from winter/spring to summer, indicating a high significance of the protozooplankton as a regulator on bacteria during the colder season, whereas from early summer the influence of metazooplankton dominated by cladocerans was evident in this eutrophic lake.
引用
收藏
页码:403 / 410
页数:8
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