@ARTICLE{A. Ali, author = {Khan, Iram and S Ali, Ayesha and A. Ali, Sharique and }, title = {Biomass and Behavioral Responses of Earthworm,Lumbricus Terrestris to Copper Chloride}, volume = {1}, number = {2}, abstract ={Introduction: Among soil species earthworms are ubiquitous, abundant and important for soil processes, constituting the largest terrestrial faunal biomass and are also impacted by soil pollutants. The primary purpose of this study was to determine whether changes in earthworm biomass and behavior could serve as a good indicator for copper toxicity in soil systems. Another aim of the study was to determine the concentrations of copper that cause maximum toxicity to the soil organisms and also affect their abundance. Method and Materials: The culture medium consisted of a 4-inch layer of uncontaminated red soil at the bottom, a thin layer of leaves, a 16 inches layer of cow dung mixed with soft soil and a thin layer of dried grass on the top. Wet gunny bags were placed to cover the boxes. Result: Reduction in biomass was observed at all concentrations above 100 mg copper chloride /kg dry weight of soil which became more significant above 450 mg copper chloride /kg dry weight of soil (p }, URL = {http://ijt.arakmu.ac.ir/article-1-26-en.html}, eprint = {http://ijt.arakmu.ac.ir/article-1-26-en.pdf}, journal = {Iranian Journal of Toxicology}, doi = {}, year = {2007} }