The effect of nutrient enrichment on the natural phytoplankton community of Lake Biwa maintained in glass bottles.
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概要
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Near- and offshore waters of the south basin of Lake Biwa were bottled, enriched with nitrogen and phosphorus, alone and in combination, and incubated for a long period in the surface layer of the lake. Experiments were carried out during four seasons in the nearshore water and for one season in the offshore water. The phytoplankton response to wastewater was also investigated. Results of the experiments showed that nitrogen and phosphorus in combination have the most stimulatory effect on phytoplankton growth, whereas there was some evidence that nitrogen rather than phosphorus stimulated phytoplankton growth more in terms of chlorophyll <I>a</I> and total cell number. Nitrogen plus phosphorus and nitrogen treatments remarkably changed the phytoplankton composition leading to an increase in green algae. Polluted river water without nutrient addition also promoted algal growth.
- 日本陸水学会の論文
日本陸水学会 | 論文
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