Seasonal change in size-selective feeding activities of Daphnia longispina and Eodiaptomus japonicus on a natural phytoplankton community in Lake Biwa: Abstract

1981 ◽  
Vol 21 (1) ◽  
pp. 600-600
Author(s):  
Kunihiro Okamoto ◽  
Tetsuya Narita
Keyword(s):  
Seasonal Change ◽  
Phytoplankton Community ◽  
Lake Biwa ◽  
Selective Feeding ◽  
Daphnia Longispina ◽  
Feeding Activities ◽  
Natural Phytoplankton

Seasonal Change of Phytoplankton Community and Water Quality in Yeongsan River Watershed

2013 ◽  
Vol 31 (2) ◽  
pp. 105-112 ◽  
Author(s):  
Misun Son ◽  
◽  
Jong-hwan Park ◽  
Chaehong Lim ◽  
Sekyung Kim ◽  
...  
Keyword(s):  
Water Quality ◽  
Seasonal Change ◽  
Phytoplankton Community ◽  
River Watershed

Seasonal change in urea decomposition by epiphytic and planktonic algae in a reed zone of Lake Biwa, Japan

2010 ◽  
Vol 30 (10) ◽  
pp. 1531-1539
Author(s):  
Osamu Mitamura ◽  
Junji Tachibana ◽  
Kunio Kondo ◽  
Shinji Ueda ◽  
Yasushi Seike
Keyword(s):  
Seasonal Change ◽  
Lake Biwa ◽  
Planktonic Algae ◽  
Urea Decomposition

scholarly journals No Clear Response in the Stormwater Phytoplankton Community to Biocide Contamination

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3120
Author(s):  
Greta Minelgaite ◽  
Diana A. Stephansen ◽  
Márta Simon ◽  
Morten L. Fejerskov ◽  
Jes Vollertsen
Keyword(s):  
Statistical Analysis ◽  
Phytoplankton Community ◽  
Taxonomic Composition ◽  
Community Response ◽  
The Other ◽  
Phytoplankton Communities ◽  
Mesocosm Experiments ◽  
Laboratory Microcosm ◽  
Stormwater Pond ◽  
Natural Phytoplankton

This study investigated the responses of natural phytoplankton communities of an urban stormwater pond to biocide contamination. The biocides carbendazim, terbutryn, diuron, and irgarol 1051, and their mixture, were used in two laboratory microcosm and one outdoor mesocosm studies at concentrations of 10, 100, and 1000 ng L−1. The water samples were collected in a pond receiving significant biocide contamination. The mesocosm study was carried out in the same pond. The phytoplankton community response was evaluated after 10–15 days of exposure, with respect to its taxonomic composition, abundance and biovolume. No significant changes were observed in any of the experiments. Only at the highest applied terbutryn concentration were lower numbers of taxa identified in both microcosm and mesocosm experiments. Additionally, increases in Chlorophyta abundance and biovolume, along with an increase in irgarol concentration, were observed throughout the three experiments. Nevertheless, the statistical analysis did not confirm any significant differences among the biocide treatments. These results suggest that the biocide concentrations probably were below the harmful or toxic threshold to the stormwater pond phytoplankton. On the other hand, as the investigated pond phytoplankton taxa face biocide inputs throughout the year, they could have already adapted to the tested biocide contamination.

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