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1 August 2001 PASSERINE DENSITIES IN RIPARIAN FORESTS OF SOUTHEAST ALASKA: POTENTIAL EFFECTS OF ANADROMOUS SPAWNING SALMON
Scott M. Gende, Mary F. Willson
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Abstract

Spawning salmon (Oncorhynchus spp.) greatly influence many biotic processes in both the aquatic and terrestrial components of riparian systems, possibly including the community of breeding birds. In southeastern Alaska in 1996–1997, the riparian forests bordering salmon streams supported, on average, higher densities, but not diversity, of forest passerines compared to non-salmon streams. The presence of salmon in the fall increases the abundance of terrestrial and aquatic invertebrates and possibly enhances food resources to riparian birds in the spring.

Densidades de Aves Paserinas en Bosques Riparios del Sureste de Alaska: Efectos Potenciales del Desove de Salmones Anádromos

Resumen. El desove de salmones anádromos (Oncorhynchus spp.) ejerce una importante influencia sobre muchos procesos bióticos en los componentes acuáticos y terrestres de los sistemas ribereños, incluyendo posiblemente las comunidades de aves. Entre 1996 y 1997, los bosques riparios del sureste de Alaska ubicados alrededor de arroyos con salmones tuvieron en promedio mayores densidades (pero no mayor diversidad) de aves paserinas de bosque que bosques situados alrededor de arroyos sin salmones. La presencia de los salmones en el otoño incrementa la abundancia de invertebrados terrestres y acuáticos y posiblemente causa aumentos en la cantidad de recursos alimenticios disponibles para las aves ribereñas en la primavera.

Scott M. Gende and Mary F. Willson "PASSERINE DENSITIES IN RIPARIAN FORESTS OF SOUTHEAST ALASKA: POTENTIAL EFFECTS OF ANADROMOUS SPAWNING SALMON," The Condor 103(3), 624-629, (1 August 2001). https://doi.org/10.1650/0010-5422(2001)103[0624:PDIRFO]2.0.CO;2
Received: 23 March 2000; Accepted: 1 March 2001; Published: 1 August 2001
KEYWORDS
chironomids
forest passerines
Oncorhynchus
riparian
salmon
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