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Titolo:
Foraging site selection by nonbreeding White-faced Ibis
Autore:
Safran, RJ; Colwell, MA; Isola, CR; Taft, OE;
Indirizzi:
Humboldt State Univ, Dept Wildlife Ecol, Arcata, CA 95521 USA Humboldt State Univ Arcata CA USA 95521 ldlife Ecol, Arcata, CA 95521 USA
Titolo Testata:
CONDOR
fascicolo: 1, volume: 102, anno: 2000,
pagine: 211 - 215
SICI:
0010-5422(200002)102:1<211:FSSBNW>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
PREY; SHOREBIRDS; COMMUNITY; CHARADRII; PREDATION; HABITAT; DENSITY;
Keywords:
foraging ecology; nonbreeding waterbirds; Plegadis chihi; Sao Joaquin Valley; water depth; wetland management; White-faced Ibis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Safran, RJ Cornell Univ, Dept Ecol & Evolutionary Biol, Corson Hall, Ithaca, NY 14853USA Cornell Univ Corson Hall Ithaca NY USA 14853 thaca, NY 14853USA
Citazione:
R.J. Safran et al., "Foraging site selection by nonbreeding White-faced Ibis", CONDOR, 102(1), 2000, pp. 211-215

Abstract

We examined foraging site selection by White-faced Ibis (Plegadis chihi) wintering in the Grasslands Ecological Area, which contains the second largest population of nonbreeding ibis in California. We compared habitat variables at White-faced Ibis foraging sites with paired, random locations in managed wetlands of the Grasslands. We contrasted the density and biomass of benthic macroinvertebrates between a subsample of bird foraging locations and random sites. Compared to random locations, the foraging locations of White-faced Ibis were closer to emergent vegetation > 10 cm in height. Moreover, ibis selected foraging locations with significantly higher chironomid and lower oligochaete biomasses relative to random sites. These findings suggest that ibis foraged close to vegetation where prey abundance may be greater and illustrate the importance of maintaining the presence of emergent vegetation in freshwater wetlands.

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Documento generato il 19/09/20 alle ore 07:16:33