THE INFLUENCE OF MACROPHYTES ON A PHYTOPLANKTON COMMUNITY IN EXPERIMENTAL CONDITIONS

被引：160

作者：

JASSER, I

机构：

[1] Department of Hydrobiology, Institute of Zoology and Ecology, University of Warsaw, Warszawa, 00-046

来源：

HYDROBIOLOGIA | 1995年 / 306卷 / 01期

关键词：

MACROPHYTES; PHYTOPLANKTON; CYANOBACTERIA; ALLELOPATHY; DIALYSIS BAGS; EXTRACTS;

D O I：

10.1007/BF00007855

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The impact of submerged macrophytes or their extracts on planktonic algae was studied under experimental conditions. Live Ceratophyllum demersum L., its extract, and extracts of four other plant species induced modifications in the phytoplankton dominance structure. These modifications were: a decline in the number of Oscillatoria limnetica Lemm., which was the most numerous cyanobacterian species, and a decline in biomass and percentage contribution of all cyanobacteria to total algal biomass. This was accompanied by an increase in biomass and percentage contribution of green algae, especially Chlorella sp. and Chlamydomonas sp. Also, there was an increase in biomass and percentage contribution of nanoplankton (under 50 mu m) to total phytoplankton biomass. The isolation of planktonic algae from direct influence of C. demersum by means of dialysis membranes caused an increase in number, biomass and percentage contribution of cyanobacteria. Release of organic compounds of over 3000 daltons by macrophytes apparently contributed to a decline of cyanobacteria by changing the phytoplankton dominance structure.

引用

页码：21 / 32

页数：12

共 27 条

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