@article {26991,
	title = {Estimating vertebrate, benthic macroinvertebrate, and diatom taxa richness in raftable Pacific Northwest rivers for bioassessment purposes},
	journal = {Environmental Monitoring and Assessment},
	volume = {184},
	number = {5},
	year = {2012},
	note = {In order to assess the biological diversity (richness of taxa) in Western rivers, the authors sampled multiple, randomly selected sites for each river.. They looked at aquatic vertebrates, aquatic macroinvertebrates and diatoms to determine the number of different species per site the average richness of species per river, and the range of numbers of species per river. The authors attempt to answer the question of how many sites should be sampled in order to properly estimate the biological richness of a large river, and along the way give a snapshot of the current state of the Umpqua and other rivers.},
	month = {2012, May},
	pages = {p.3185{\textendash}3198},
	keywords = {aquatic invertebrates, Chehalis River, chloride, diatoms, ecosystem health, ecosystem modeling, fishes, geology, John Day River, Malheur River, nitrogen, Okanogan River, sediments, Sprague River, sulfate, Umpqua River, water quality, water temperature, Willamette River},
	doi = {10.1007/s10661-011-2181-9},
	author = {Hughes , Robert M. and Herlihy, Alan T. and Gerth, William J. and Pan, Yangdong}
}
