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Urban Bird Ecology and Conservation$
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Christopher A. Lepczyk and Paige S. Warren

Print publication date: 2012

Print ISBN-13: 9780520273092

Published to California Scholarship Online: May 2013

DOI: 10.1525/california/9780520273092.001.0001

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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 22 September 2021

Evaluating Factors that Influence Avian Community Response to Urbanization

Evaluating Factors that Influence Avian Community Response to Urbanization

(p.71) Chapter Five Evaluating Factors that Influence Avian Community Response to Urbanization
Urban Bird Ecology and Conservation

Amanda D. Rodewald

University of California Press

Although numerous studies have documented shifts in avian community structure in urbanizing landscapes, the ecological mechanisms that prompt these changes are poorly understood. I evaluated evidence for five alternate hypotheses to explain the commonly reported negative responses of many neotropical migratory species and positive responses of many residents and temperate migrants to urbanization. An information-theoretic approach showed that the two hypotheses receiving the most support in explaining abundance of urban avoiders were heterospecific attraction and dominance of understory by Amur honeysuckle (Lonicera maackii). In contrast, variation in abundances of urban adapters was explained by four hypotheses, each receiving roughly equivalent support. Results show that species-specific responses to urbanization are complex and may not be amenable to broad generalizations.

Keywords:   exotic plants, feeders, heterospecific attraction, honeysuckle, mechanisms, predators, temperature, urban

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