Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1080/15324980701784274 |
Functional group and species responses to precipitation in three semi-arid rangeland ecosystems | |
Derner, Justin D.1; Hess, Bret W.2; Olson, Richard A.3; Schuman, Gerald E.1 | |
通讯作者 | Derner, Justin D. |
来源期刊 | ARID LAND RESEARCH AND MANAGEMENT
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ISSN | 1532-4982 |
出版年 | 2008 |
卷号 | 22期号:1页码:81-92 |
英文摘要 | The objective of this study was to compare forage production and foliar and basal cover responses of plant communities, plant functional groups, and individual species between years with below average (2004) and well above-average (2005) spring precipitation in three semi-arid rangeland ecosystems (shortgrass steppe, northern mixed-grass prairie, and sagebrush grassland). Foliar and basal cover at the time of a peak standing crop were visually estimated using modified Daubenmire cover categories, and forage production by species was harvested from areas that had been excluded from large herbivores. Responses of forage production to precipitation, but not foliar and basal cover, were similar for the three semi-arid ecosystems. Total forage production was more responsive (75-159%) than basal (8-35%) or foliar (2-29%) cover to increasing precipitation. Absolute (1016 kg center dot ha(-1)) and relative (159%) increases in total forage production from 2004 to 2005 were greatest for the shortgrass steppe. Forage production increases were largely attributable to greater production by C3 perennial graminoids in each ecosystem; increases in basal and foliar cover for this plant functional group were observed in shortgrass steppe and sagebrush grassland, but not in northern mixed-grass prairie. Fine-scale inputs of species and plant functional group responses to precipitation will further the accuracy of forage prediction models in predicting both total biomass production and relative proportions of plant biomass. |
英文关键词 | bare ground basal cover foliar cover forage production northern mixed-grass prairie sagebrush grassland shortgrass steppe |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000252059200006 |
WOS关键词 | MIXED-GRASS PRAIRIE ; SHORTGRASS STEPPE ; TALLGRASS PRAIRIE ; FORAGE PRODUCTION ; PLANT-PRODUCTION ; USE EFFICIENCY ; UNITED-STATES ; VEGETATION ; PRODUCTIVITY ; DYNAMICS |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/156502 |
作者单位 | 1.USDA ARS, High Plains Grasslands Res Stn, Cheyenne, WY 82009 USA; 2.Univ Wyoming, Dept Anim Sci, Laramie, WY 82071 USA; 3.Univ Wyoming, Dept Renewable Resources, Laramie, WY 82071 USA |
推荐引用方式 GB/T 7714 | Derner, Justin D.,Hess, Bret W.,Olson, Richard A.,et al. Functional group and species responses to precipitation in three semi-arid rangeland ecosystems[J],2008,22(1):81-92. |
APA | Derner, Justin D.,Hess, Bret W.,Olson, Richard A.,&Schuman, Gerald E..(2008).Functional group and species responses to precipitation in three semi-arid rangeland ecosystems.ARID LAND RESEARCH AND MANAGEMENT,22(1),81-92. |
MLA | Derner, Justin D.,et al."Functional group and species responses to precipitation in three semi-arid rangeland ecosystems".ARID LAND RESEARCH AND MANAGEMENT 22.1(2008):81-92. |
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