Appendix E. Average epilithic standing crops from all injections for each of the three study sites. ValettH. M. ThomasS. A. MulhollandP. J. WebsterJ. R. DahmC. N. FellowsC. S. CrenshawC. L. PetersonC. G. 2016 Average epilithic standing crops from all injections for each of the three study sites.