Cao, Y., C.P. Hawkins, D.P. Larsen, and J. Van Sickle. 2007. Effects of sample standardization on mean species detectabilities and estimates of relative differences in species richness among assemblages. American Naturalist 170:381-395.
Cao, Y., C.P. Hawkins, J. Olsen, and M. Nelson. 2007. Modeling natural environmental gradients improves the accuracy and precision of diatom-based indicators for Idaho streams. Journal of the North American Benthological Society 26:566-585.
Cao, Y., and C.P. Hawkins. 2005. Simulating biological impairment for evaluating ecological indicators. Journal of Applied Ecology 42: 954-965.
Cao, Y., D. D. Williams & D. P. Larsen. 2002. Comparison of ecological communities: the problem of sample representativeness. Ecological Monographs 72:41-56.
Cao, Y., D. D. Williams, & N.E. Williams. 1998. How important are rare species in community ecology and bioassessment. Limnology & Oceanography 43: 1403-1409.
