Arid
DOI10.1007/s10530-011-0085-9
Linaria dalmatica invades south-facing slopes and less grazed areas in grazing-tolerant mixed-grass prairie
Blumenthal, Dana M.1; Norton, Andrew P.2; Cox, Samuel E.3; Hardy, Erik M.1; Liston, Glen E.4; Kennaway, Lisa5; Booth, D. Terrance3; Derner, Justin D.3
通讯作者Blumenthal, Dana M.
来源期刊BIOLOGICAL INVASIONS
ISSN1387-3547
出版年2012
卷号14期号:2页码:395-404
英文摘要

Identifying environments where invasive plants are most invasive is key to understanding causes of invasion and developing effective management strategies. In mixed-grass prairie, invasive plants are often successful in relatively wet, nitrogen-rich areas, and areas protected from grazing. Dalmatian toadflax, a common invader of mixed-grass prairie, can also be favored by high water and nitrogen availability, but is thought to be relatively unpalatable to cattle, and therefore favored by grazing. We used spatially-adjusted model selection techniques to quantify relationships between toadflax cover (measured using very high-resolution aerial imagery), and relative snow deposition (estimated with a blowing snow model), slope, aspect, soil texture, and grazing intensity (estimated by proximity to water tanks). Toadflax was common throughout the 400 ha study site, occurring in 742 of 1,861 images. Toadflax cover was high on steeper slopes, particularly those with southern aspects. These two topographic variables were more effective in explaining toadflax distribution than modeled snow deposition, suggesting that factors other than snow deposition cause toadflax invasion on south-facing slopes. Toadflax cover was also high in areas further from water tanks, indicating that grazing may inhibit toadflax invasion. More broadly, this result suggests that grazing can reduce invasion of even relatively unpalatable species in ecosystems with long evolutionary histories of grazing.


英文关键词Dalmatian toadflax (Linaria dalmatica) Invasibility Rangeland Semi-arid grassland Resource availability Geostatistical model selection
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000299516200011
WOS关键词LIVESTOCK WATERING POINTS ; COMMUNITY STRUCTURE ; SEMIARID GRASSLAND ; SNOW DISTRIBUTIONS ; LARGE HERBIVORES ; PLANT DIVERSITY ; INVASION ; MODEL ; VEGETATION ; MANAGEMENT
WOS类目Biodiversity Conservation ; Ecology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构Colorado State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/171571
作者单位1.ARS, Crops Res Lab, USDA, Rangeland Resources Res Unit, Ft Collins, CO 80521 USA;
2.Colorado State Univ, Dept Bioagr Sci & Pest Management, Ft Collins, CO 80523 USA;
3.ARS, Crops Res Lab, USDA,High Plains Grasslands Res Stn, Rangeland Resources Res Unit, Cheyenne, WY 82009 USA;
4.Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA;
5.APHIS, USDA, PPQ Ctr Plant Hlth Sci & Technol, Ft Collins, CO USA
推荐引用方式
GB/T 7714
Blumenthal, Dana M.,Norton, Andrew P.,Cox, Samuel E.,et al. Linaria dalmatica invades south-facing slopes and less grazed areas in grazing-tolerant mixed-grass prairie[J]. Colorado State University,2012,14(2):395-404.
APA Blumenthal, Dana M..,Norton, Andrew P..,Cox, Samuel E..,Hardy, Erik M..,Liston, Glen E..,...&Derner, Justin D..(2012).Linaria dalmatica invades south-facing slopes and less grazed areas in grazing-tolerant mixed-grass prairie.BIOLOGICAL INVASIONS,14(2),395-404.
MLA Blumenthal, Dana M.,et al."Linaria dalmatica invades south-facing slopes and less grazed areas in grazing-tolerant mixed-grass prairie".BIOLOGICAL INVASIONS 14.2(2012):395-404.
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