Assessment of the water quality using protozoan communities during low water period in Baiyangdian Lake

Abstract

Abstract: The water level of Baiyangdian Lake has been under lowstand state for 5 years.The current water quality of the lake was evaluated using protozoan communities,which were collected by PFU (Polyurethane Foam Unite) artificial subtracts.The results showed that Baiyangdian Lake was still affected by waste water of Fuhe River.The internal source pollution of Baiyangdian Lake had a strong impact on the protozoan communities.The colonization species of protozoa decreased,with the abundance increased by 1.28 times at four sampling plots.Compared with the data of the middle 1990s,the effect of internal pollution sources on Baiyangdian Lake was more serious.

Key words: Jujube orchard, Contarinia sp, Erigonidium graminicola, Spatial distribution pattern, Geostatistics

CLC Number:

Q178

LI Fengchao, SHEN Yunfen, LIU Cunqi, GUAN Yueqiang, SU Yanping, JIA Hong . Assessment of the water quality using protozoan communities during low water period in Baiyangdian Lake[J]. cje, 2005, (7): 785-789.

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