Arid
DOI10.1890/13-1687.1
Functional response of U.S. grasslands to the early 21st-century drought
Moran, M. Susan1; Ponce-Campos, Guillermo E.1; Huete, Alfredo2; McClaran, Mitchel P.3; Zhang, Yongguang1; Hamerlynck, Erik P.1; Augustine, David J.4; Gunter, Stacey A.5; Kitchen, Stanley G.6; Peters, Debra P. C.7; Starks, Patrick J.8; Hernandez, Mariano1
通讯作者Moran, M. Susan
来源期刊ECOLOGY
ISSN0012-9658
EISSN1939-9170
出版年2014
卷号95期号:8页码:2121-2133
英文摘要

Grasslands across the United States play a key role in regional livelihood and national food security. Yet, it is still unclear how this important resource will respond to the prolonged warm droughts and more intense rainfall events predicted with climate change. The early 21st-century drought in the southwestern United States resulted in hydroclimatic conditions that are similar to those expected with future climate change. We investigated the impact of the early 21st-century drought on aboveground net primary production (ANPP) of six desert and plains grasslands dominated by C-4 (warm season) grasses in terms of significant deviations between observed and expected ANPP. In desert grasslands, drought-induced grass mortality led to shifts in the functional response to annual total precipitation (P-T), and in some cases, new species assemblages occurred that included invasive species. In contrast, the ANPP in plains grasslands exhibited a strong linear function of the current-year P-T and the previous-year ANPP, despite prolonged warm drought. We used these results to disentangle the impacts of interannual total precipitation, intra-annual precipitation patterns, and grassland abundance on ANPP, and thus generalize the functional response of C-4 grasslands to predicted climate change. This will allow managers to plan for predictable shifts in resources associated with climate change related to fire risk, loss of forage, and ecosystem services.


英文关键词climate change desert extreme events grassland production invasive species plains precipitation variability resilience warm drought
类型Article
语种英语
国家USA ; Australia
收录类别SCI-E
WOS记录号WOS:000340215900011
WOS关键词NET PRIMARY PRODUCTION ; CLIMATE-CHANGE ; UNITED-STATES ; GLOBAL-CHANGE ; TALLGRASS PRAIRIE ; ECOSYSTEM ; VEGETATION ; BIOMES ; NORTH ; DYNAMICS
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
来源机构University of Arizona ; E18
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/181712
作者单位1.USDA ARS, Southwest Watershed Res, Tucson, AZ 85719 USA;
2.Univ Technol Sydney, Plant Funct Biol & Climate Change Cluster, Sydney, NSW 2007, Australia;
3.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA;
4.USDA ARS, Rangeland Resources Res Unit, Ft Collins, CO 80526 USA;
5.USDA ARS, Southern Plains Range Res Stn, Woodward, OK 73801 USA;
6.US Forest Serv, USDA, Rocky Mt Res Stn, Provo, UT 84606 USA;
7.USDA ARS, Jornada Expt Range, Las Cruces, NM 30003 USA;
8.USDA ARS, Grazing Lands Res Lab, El Reno, OK 73036 USA
推荐引用方式
GB/T 7714
Moran, M. Susan,Ponce-Campos, Guillermo E.,Huete, Alfredo,et al. Functional response of U.S. grasslands to the early 21st-century drought[J]. University of Arizona, E18,2014,95(8):2121-2133.
APA Moran, M. Susan.,Ponce-Campos, Guillermo E..,Huete, Alfredo.,McClaran, Mitchel P..,Zhang, Yongguang.,...&Hernandez, Mariano.(2014).Functional response of U.S. grasslands to the early 21st-century drought.ECOLOGY,95(8),2121-2133.
MLA Moran, M. Susan,et al."Functional response of U.S. grasslands to the early 21st-century drought".ECOLOGY 95.8(2014):2121-2133.
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