Cluster analysis and stepwise discriminant analysis were used to group waterfowl and shorebird use on water impoundments (bentonite, coal, livestock) on the Northern High Plains. Three bird-use categories—high, medium, and low—were delineated by these analytical procedures. Eleven physical, chemical, and biological parameters of impoundments were related to bird use; water area, nitrogen, and low basin slopes were found to be important parameters in estimating bird use on impoundments. Spring and summer were the best seasons for surveying waterfowl and shorebird water impoundment use.
Uresk, Daniel W. and Severson, Kieth
"Waterfowl and shorebird use of surface-mined and livestock water impoundments on the Northern Great Plains,"
Great Basin Naturalist: Vol. 48
, Article 7.
Available at: http://scholarsarchive.byu.edu/gbn/vol48/iss3/7