摘要

In order to determine the pollution level of Yuvarlak stream by using benthic macro invertebrates, monthly samplings were conducted between May 2001 and April 2002 at ten stations. Benthic macro invertebrates were sampled by sieving of mud samples collected by using a 500 pm mesh sized kick-net and an Ekman-Birge grab (at ninth and tenth stations) through a 500 pm mesh sized sieve. Collected materials were fixed in 4% formalin solution in field.

  • 出版日期2011