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Titolo:
REPRODUCTIVE SUCCESS OF BALD EAGLES (HALIAEETUS-LEUCOCEPHALUS) AND ITS ASSOCIATION WITH HABITAT OR LANDSCAPE FEATURES AND WEATHER IN SOUTHEAST ALASKA
Autore:
GENDE SM; WILSON MF; JACOBSEN M;
Indirizzi:
PACIFIC NW RES STN,FORESTRY SCI LAB,2770 SHERWOOD LANE,SUITE 2A JUNEAU AK 99801 US FISH & WILDLIFE SERV,OFF RAPTOR MANAGEMENT JUNEAU AK 99801
Titolo Testata:
Canadian journal of zoology
fascicolo: 10, volume: 75, anno: 1997,
pagine: 1595 - 1604
SICI:
0008-4301(1997)75:10<1595:RSOBE(>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
TERRITORY QUALITY; BREEDING PERFORMANCE; FORAGING ECOLOGY; NESTING HABITAT; TENGMALMS OWL; FOOD; DENSITY; POPULATION; SELECTION; COLUMBIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
74
Recensione:
Indirizzi per estratti:
Citazione:
S.M. Gende et al., "REPRODUCTIVE SUCCESS OF BALD EAGLES (HALIAEETUS-LEUCOCEPHALUS) AND ITS ASSOCIATION WITH HABITAT OR LANDSCAPE FEATURES AND WEATHER IN SOUTHEAST ALASKA", Canadian journal of zoology, 75(10), 1997, pp. 1595-1604

Abstract

Long-term data have been collected on nesting bald eagles (Haliaeetusleucocephalus) in three areas of southeast Alaska. The average density of active nests was among the highest recorded, but nest productivity (average number of young fledged per active nest) and success (percentage of active nests that fledged at least one young) were similar tovalues in other areas. Using logistic regression, nest productivity was associated with several habitat or landscape features (productivitywas highest in proximity to spawning herring and at a particular location), each of which could be related to the availability of prey (fish) in the early spring (April, May) during egg laying and incubation. Consistency of nesting success was associated with the presence of tidal flats at one study site. Nest use, but not nesting success, was related to nesting success the previous year. Multiple regression showed that fewer nests per kilometre were successful in years with a high frequency of spring rains.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/10/20 alle ore 11:19:58