Plant or animal species reduced to such low numbers of individuals that they are at risk of becoming extinct.
Three Experimental High-Flow Releases from Glen Canyon Dam, Arizona-Effects on the Downstream Colorado River Ecosystem [ More info] Scientific issues we should consider when conduction high flow experiments to ameliorate the negative effects of dams on native river species and fluvial processes.
Understanding the habitat needs of the declining western yellow-billed cuckoo [ More info] This endangered species prefers native trees in large, continuous areas of riparian habitat. Armed with this information, resource managers may identify and preserve areas favorable to this population.
Alphabetical Index of Topics
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