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Breeding bird response to juniper woodland expansion

Journal of Range Management

By:
and

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Abstract

In recent times, pinyon (Pinus spp.)-juniper (Juniperus spp.) woodlands have expanded into large portions of the Southwest historically occupied by grassland vegetation. From 1997a??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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Breeding bird response to juniper woodland expansion
Series title:
Journal of Range Management
Volume
54
Issue:
3
Year Published:
2001
Language:
English
Contributing office(s):
Forest and Rangeland Ecosystem Science Center
Description:
p. 226-232
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Range Management
First page:
226
Last page:
232