干旱区生态环境知识资源中心(Arid): Semi-Arid Shrublands Require Little On-Going Management to Remain Suitable for Black-Capped Vireos

Arid

DOI	10.1637/19-027
	Semi-Arid Shrublands Require Little On-Going Management to Remain Suitable for Black-Capped Vireos
	Reemts, Charlotte M.1; Farquhar, C. Craig 2; Ferrato, Jacqueline R.3; Kostecke, Richard M.1
通讯作者	Reemts, Charlotte M.
来源期刊	AMERICAN MIDLAND NATURALIST
ISSN	0003-0031
EISSN	1938-4238
出版年	2020
卷号	183 期号:1 页码:78-89
英文摘要	The recently delisted black-capped vireo (Vireo atricapilla, hereafter vireo'') nests in shrublands from south-central Oklahoma to southwestern Tamaulipas, Mexico. Vireos are considered to be conservation-reliant because they require on-going habitat maintenance and control of brown-headed cowbirds (Molothrus aster, hereafter cowbird). Most long-term research has been conducted in comparatively mesic parts of the vireo range, but more arid shrublands comprise the larger proportion of their distribution. Our study area is in a Nature Conservancy preserve in southwestern Texas (Val Verde County), which does not manage vireo habitat or cowbird populations. We examined change in habitat characteristics (2002 vs 2017) and bird detections (1997-2001 vs 2013-2017) at two sites: a mesic alluvial terrace and an adjacent semi-arid canyon. The alluvial site is recovering from a historic flood in the 1950s that scoured vegetation to bare ground; the canyon site has not experienced any major disturbance in that time frame. Vireo and cowbird detections declined at the alluvial site but not at the canyon site. Several important vegetation characteristics of the alluvial site changed significantly: density of leaf cover at lower heights (<1 m) decreased, the number of shrubs increased, and tree height increased. At the canyon site, leaf density increased in all height classes above 0.5 m, shrub width increased, and the number of shrubs increased. While the alluvial site has become less suitable for vireos, the canyon site has supported breeding vireos throughout our study period despite lack of landscape management or cowbird control. Our data suggest that in more arid parts of the vireo range, undisturbed shrublands persist as mature viable habitat for extended periods, possibly in perpetuity, with little or no need for management. These low-maintenance shrublands will be especially important for the long-term persistence of black-capped vireo populations.
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000508609000005
WOS关键词	BROOD PARASITISM ; HABITAT ; RAREFACTION ; POPULATION ; SELECTION ; DROUGHT ; SUCCESS
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312074
作者单位	1.Nature Conservancy, Austin, TX 78701 USA; 2.Texas State Univ, Dept Biol, San Marcos, TX 78666 USA; 3.Nature Conservancy, San Antonio, TX 78215 USA
推荐引用方式 GB/T 7714	Reemts, Charlotte M.,Farquhar, C. Craig,Ferrato, Jacqueline R.,et al. Semi-Arid Shrublands Require Little On-Going Management to Remain Suitable for Black-Capped Vireos[J],2020,183(1):78-89.
APA	Reemts, Charlotte M.,Farquhar, C. Craig,Ferrato, Jacqueline R.,&Kostecke, Richard M..(2020).Semi-Arid Shrublands Require Little On-Going Management to Remain Suitable for Black-Capped Vireos.AMERICAN MIDLAND NATURALIST,183(1),78-89.
MLA	Reemts, Charlotte M.,et al."Semi-Arid Shrublands Require Little On-Going Management to Remain Suitable for Black-Capped Vireos".AMERICAN MIDLAND NATURALIST 183.1(2020):78-89.