Breeding bird response to juniper woodland expansion

Journal of Range Management
By:  and 



In recent times, pinyon (Pinus spp.)-juniper (Juniperus spp.) woodlands have expanded into large portions of the Southwest historically occupied by grassland vegetation. From 1997-1998, we studied responses of breeding birds to one-seed juniper (J. monosperma) woodland expansion at 2 grassland study areas in northern Arizona. We sampled breeding birds in 3 successional stages along a grassland-woodland gradient: un-invaded grassland, grassland undergoing early stages of juniper establishment, and developing woodland. Species composition varied greatly among successional stages and was most different between endpoints of the gradient. Ground-nesting grassland species predominated in uninvaded grassland but declined dramatically as tree density increased. Tree- and cavity-nesting species increased with tree density and were most abundant in developing woodland. Restoration of juniper-invaded grasslands will benefit grassland-obligate birds and other wildlife.

Publication type Article
Publication Subtype Journal Article
Title Breeding bird response to juniper woodland expansion
Series title Journal of Range Management
DOI 10.2307/4003238
Volume 54
Issue 3
Year Published 2001
Language English
Publisher Society for Range Management
Contributing office(s) Forest and Rangeland Ecosystem Science Center
Description 7 p.
First page 226
Last page 232
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