Arid
DOI10.1007/s10530-008-9357-4
Seedling competition between native cottonwood and exotic saltcedar: implications for restoration
Bhattacharjee, Joydeep1; Taylor, John P., Jr.2; Smith, Loren M.3; Haukos, David A.4
通讯作者Bhattacharjee, Joydeep
来源期刊BIOLOGICAL INVASIONS
ISSN1387-3547
出版年2009
卷号11期号:8页码:1777-1787
英文摘要

Altered hydrology of southwestern United States rivers has led to a decline in native cottonwood (Populus deltoides). Areas historically dominated by cottonwood have been replaced by invasive saltcedar (Tamarix chinensis). Restoration of historic hydrology through periodic flooding of riparian areas has been a means of restoring native species. However, due to similarity in germination requirements of cottonwoods and saltcedars, flooding may create an unwanted increase in the number of saltcedar seedlings. Therefore, we evaluated competitive aspects of these co-occurring species in an extant riparian habitat in the arid southwestern US. We measured effects of competition between cottonwood and saltcedar seedlings and among cottonwood seedlings during the first growing season following seedling establishment in 360, 0.5 x 0.5-m plots at the Bosque del Apache National Wildlife Refuge, New Mexico. We used five interspecific density treatments and five intraspecific density treatments. Cottonwood seedling biomass and height were twice that of saltcedar seedlings across all density treatments. As density of cottonwood increased, intraspecific competition increased in severity and biomass of cottonwood seedlings decreased. At 4 plants/0.25 m(2), cottonwood seedlings had the greatest biomass; whereas, survival was highest at 10 plants/0.25 m(2). Our results support greenhouse studies and suggest that if favorable germination conditions are established for cottonwood in floodplains, saltcedar seedlings that cogerminate could be outcompeted by native cottonwood seedlings.


英文关键词Biomass Competition Cottonwood Saltcedar Seedling Riparian
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000269529100003
WOS关键词MIDDLE RIO-GRANDE ; ECOSYSTEM MANAGEMENT ; TAMARIX-RAMOSISSIMA ; POPULUS-DELTOIDES ; LARGE FLOODS ; NEW-MEXICO ; DISTURBANCE ; ESTABLISHMENT ; DYNAMICS ; FOREST
WOS类目Biodiversity Conservation ; Ecology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/160007
作者单位1.Univ Louisiana Monroe, Dept Biol, Monroe, LA 71209 USA;
2.Bosque Apache Natl Wildlife Refuge, Socorro, NM 87801 USA;
3.Oklahoma State Univ, Dept Zool, Stillwater, OK 74078 USA;
4.Texas Tech Univ, US Fish & Wildlife Serv, Dept Nat Resources Management, Lubbock, TX 79409 USA
推荐引用方式
GB/T 7714
Bhattacharjee, Joydeep,Taylor, John P., Jr.,Smith, Loren M.,et al. Seedling competition between native cottonwood and exotic saltcedar: implications for restoration[J],2009,11(8):1777-1787.
APA Bhattacharjee, Joydeep,Taylor, John P., Jr.,Smith, Loren M.,&Haukos, David A..(2009).Seedling competition between native cottonwood and exotic saltcedar: implications for restoration.BIOLOGICAL INVASIONS,11(8),1777-1787.
MLA Bhattacharjee, Joydeep,et al."Seedling competition between native cottonwood and exotic saltcedar: implications for restoration".BIOLOGICAL INVASIONS 11.8(2009):1777-1787.
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