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Wildland Resources Faculty Publications

Commercial harvest; Eared Grebes; El Niño; Great Salt Lake; Mono Lake; Podiceps nigricollis

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Population Fluctuations And Distribution Of Staging Eared Grebes (Podiceps Nigricollis) In North America, Anthony J. Roberts, Michael R. Conover, John Luft, John Neil Oct 2013

Population Fluctuations And Distribution Of Staging Eared Grebes (Podiceps Nigricollis) In North America, Anthony J. Roberts, Michael R. Conover, John Luft, John Neil

Wildland Resources Faculty Publications

Eared Grebes (Podiceps nigricollis Brehm, 1831) use saline ecosystems throughout much of their life cycle, and greater than 90% of the North American population stage during fall at two hypersaline lakes. At one of these lakes, Great Salt Lake (GSL), Utah, a commercial harvest of brine shrimp (Artemia franciscana Kellogg, 1906) cysts occurs during fall and may impact Eared Grebe populations. We used photo surveys on the other hypersaline lake, Mono Lake, California, and on the GSL, as well as aerial counts on the GSL, to describe population fluctuations of Eared Grebes staging on these lakes. The long-term (1997–2012 ...