Analyzing trophic transfer of metals in stream food webs using nitrogen isotopes

Quinn, M.R., Feng, X., Folt, C.L., and Chamberlain, C.P. (2003) Analyzing trophic transfer of metals in stream food webs using nitrogen isotopes. Science of the Total Environment, v. 317, p. 73-89. doi: 10.1016/S0048-9697(02)00615-0