Arid
EFFECTS OF FERAL HORSE HERDS ON RANGELAND PLANT COMMUNITIES ACROSS A PRECIPITATION GRADIENT
Baur, Lauren E.1; Schoenecker, Kathryn A.2,3; Smith, Melinda D.4,5
通讯作者Baur, Lauren E.
来源期刊WESTERN NORTH AMERICAN NATURALIST
ISSN1527-0904
EISSN1944-8341
出版年2017
卷号77期号:4页码:526-539
英文摘要

Feral horses are widespread in the western United States, with the majority of feral horse herds found in the Great Basin. There is a federal mandate to manage these herds in order to maintain "ecological balance"; however, understanding of the specific effects of feral horse grazing on rangeland plant communities in this region is incomplete. To address this research gap, we utilized long-term grazing exclosures and fenceline contrasts to evaluate the impacts of feral horses on several plant community variables (diversity, richness, dominance, and biomass) and species composition. Because the effects of grazing can vary with site precipitation and productivity, we selected 5 sites from 4 different rangeland types (Great Basin Desert, Colorado Plateau, Rocky Mountain grassland, and mixed grass prairie) that spanned a mean annual precipitation gradient of 229 to 413 mm. Our results did not reveal a significant effect of feral horse grazing on plant community composition, species richness, diversity, evenness, or dominance. In contrast, total aboveground herbaceous biomass and grass biomass were significantly reduced with feral horse grazing, but these effects did not vary with mean annual precipitation. Our results suggest that, at least at the sites we studied, feral horses have affected the plant community by reducing herbaceous biomass but have not caused plant community shifts. Additional multisite studies, preferably with standardized exclosures and larger sample sizes, would increase our understanding of feral horse grazing effects and inform management of feral horse herds in the western United States.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000425667300011
WOS关键词WESTERN UNITED-STATES ; MANAGEMENT IMPLICATIONS ; SEMIARID ECOSYSTEMS ; RIPARIAN ECOSYSTEMS ; SAGEBRUSH STEPPE ; PRYOR MOUNTAINS ; GREAT-BASIN ; SALT-MARSH ; VEGETATION ; DIVERSITY
WOS类目Biodiversity Conservation ; Ecology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构United States Geological Survey ; Colorado State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/202934
作者单位1.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA;
2.Colorado State Univ, Ft Collins Sci Ctr, US Geol Survey, Ft Collins, CO 80523 USA;
3.Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Ft Collins, CO 80523 USA;
4.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA;
5.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA
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GB/T 7714
Baur, Lauren E.,Schoenecker, Kathryn A.,Smith, Melinda D.. EFFECTS OF FERAL HORSE HERDS ON RANGELAND PLANT COMMUNITIES ACROSS A PRECIPITATION GRADIENT[J]. United States Geological Survey, Colorado State University,2017,77(4):526-539.
APA Baur, Lauren E.,Schoenecker, Kathryn A.,&Smith, Melinda D..(2017).EFFECTS OF FERAL HORSE HERDS ON RANGELAND PLANT COMMUNITIES ACROSS A PRECIPITATION GRADIENT.WESTERN NORTH AMERICAN NATURALIST,77(4),526-539.
MLA Baur, Lauren E.,et al."EFFECTS OF FERAL HORSE HERDS ON RANGELAND PLANT COMMUNITIES ACROSS A PRECIPITATION GRADIENT".WESTERN NORTH AMERICAN NATURALIST 77.4(2017):526-539.
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