Arid
DOI10.1614/IPSM-D-12-00012.1
Ecological Characteristics of Sites Invaded by Buffelgrass (Pennisetum ciliare)
Abella, Scott R.1; Chiquoine, Lindsay P.1; Backer, Dana M.2
通讯作者Abella, Scott R.
来源期刊INVASIVE PLANT SCIENCE AND MANAGEMENT
ISSN1939-7291
EISSN1939-747X
出版年2012
卷号5期号:4页码:443-453
英文摘要

Understanding the ecological characteristics of areas invaded and not invaded by exotic plants is a priority for invasive plant science and management. Buffelgrass is an invasive perennial species that managers view as a major threat to indigenous ecosystems of conservation lands in Australia, Mexico, the United States, and other locations where the species is not native. At 14 sites in Saguaro National Park in the Arizona Uplands of the Sonoran Desert, we compared the soil, vegetation, and soil seed bank of patches invaded and not invaded by buffelgrass. Abiotic variables, such as slope aspect and soil texture, did not differ between buffelgrass patches and patches without buffelgrass. In contrast, variables under primarily biotic control differed between patch types. Soil nutrients, such as organic C and NO3-N, were approximately twofold greater in buffelgrass compared with nonbuffelgrass patches. Average native species richness was identical (14 species 100 m(-2)) between patch types, but native plant cover was 43% lower in buffelgrass patches. Unexpectedly, native seed-bank densities did not differ significantly between patch types and were 40% greater than buffelgrass seed density below buffelgrass canopies. Results suggest that (1) soil nutrient status should not be unfavorable for native plant colonization at buffelgrass sites if buffelgrass is treated; (2) at least in the early stages of buffelgrass patch formation (studied patches were about 10 yr old), native vegetation species were not excluded, but rather, their cover was reduced; and (3) native soil seed banks were not reduced in buffelgrass patches.


英文关键词Cenchrus ciliaris L. diversity fertile island invasibility native species richness seed bank soil species composition
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000312282900007
WOS关键词SPECIES RICHNESS ; INVASIVE PLANTS ; SEED BANKS ; GRASS ; RESTORATION ; CACTUS ; TRANSFORMATION ; ESTABLISHMENT ; PRODUCTIVITY ; COMPETITION
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/173031
作者单位1.Univ Nevada, Dept Environm & Occupat Hlth, Las Vegas, NV 89154 USA;
2.Saguaro Natl Pk, Natl Pk Serv, Tucson, AZ 85730 USA
推荐引用方式
GB/T 7714
Abella, Scott R.,Chiquoine, Lindsay P.,Backer, Dana M.. Ecological Characteristics of Sites Invaded by Buffelgrass (Pennisetum ciliare)[J],2012,5(4):443-453.
APA Abella, Scott R.,Chiquoine, Lindsay P.,&Backer, Dana M..(2012).Ecological Characteristics of Sites Invaded by Buffelgrass (Pennisetum ciliare).INVASIVE PLANT SCIENCE AND MANAGEMENT,5(4),443-453.
MLA Abella, Scott R.,et al."Ecological Characteristics of Sites Invaded by Buffelgrass (Pennisetum ciliare)".INVASIVE PLANT SCIENCE AND MANAGEMENT 5.4(2012):443-453.
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