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Titolo:
Within- and between-year dispersal of American Avocets among multiple western Great Basin wetlands
Autore:
Plissner, JH; Haig, SM; Oring, LW;
Indirizzi:
US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Corvallis, OR 97331 USA US Geol Survey Corvallis OR USA 97331 st Sci Ctr, Corvallis, OR 97331 USA Univ Nevada, Dept Environm & Resource Sci, Reno, NV 89512 USA Univ NevadaReno NV USA 89512 Environm & Resource Sci, Reno, NV 89512 USA
Titolo Testata:
WILSON BULLETIN
fascicolo: 3, volume: 111, anno: 1999,
pagine: 314 - 320
SICI:
0043-5643(199909)111:3<314:WABDOA>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONNECTIVITY; ENVIRONMENTS; PHILOPATRY; EVOLUTION; MOVEMENTS; RATES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Haig, SM US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, 3200 SW Jefferson Way,Corvallis, OR 97331 USA US Geol Survey 3200 SW Jefferson Way Corvallis OR USA 97331 1 USA
Citazione:
J.H. Plissner et al., "Within- and between-year dispersal of American Avocets among multiple western Great Basin wetlands", WILSON B, 111(3), 1999, pp. 314-320

Abstract

Connectivity of discrete habitat patches may be described in terms of the movements of individual organisms among such patches. To examine connectivity of widely dispersed alkali lake systems, we recorded post-breeding and subsequent breeding locations of color-banded American Avocets (Recurvirostra americana) in the western U.S. Great Basin, from 1995-1997. Among individuals observed during the postbreeding/premigratory season, over half of the188 breeding adults were observed at lakes other than their breeding locations, whereas 70% of 125 post-fledged young were observed only at their natal lake systems. Of 46 breeding adults observed in consecutive years, only eight (17%) dispersed between different lake systems. Only 8% of chicks were observed after their first year, and only 1.3% returned to the natal areain subsequent breeding seasons. Adult and recently fledged birds from the southernmost breeding site were regularly observed in post-breeding aggregations at lakes several hundred kilometers to the north, suggesting seasonaldifferences in habitat quality at the lake systems studied. These results indicate the importance of maintaining habitat fur post-breeding movements.

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Documento generato il 02/12/20 alle ore 05:38:56