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Grazing regime alters plant community structure via patch-scale diversity in semiarid grasslands

文献类型：期刊论文

作者Li, Wenhuai2; Hooper, David U.; Wu, Liji4; Bakker, Jonathan D.; Gianuca, Andros T.; Wu, X. Ben; Taube, Friedhelm10; Wang, Chaonan11; Bai, Yongfei1
刊名ECOSPHERE
出版日期2021
卷号12期号:6
关键词alpha diversity beta diversity grazing management intermediate disturbance hypothesis nestedness component replacement component
ISSN号2150-8925
DOI10.1002/ecs2.3547
文献子类Article
英文摘要Selective grazing of livestock creates lightly and heavily grazed vegetation patches, which together contribute to the whole community in grazed grasslands. The intermediate disturbance hypothesis (IDH) predicts moderate grazing intensity can increase species diversity. However, grazing patchiness complicates predicted responses to grazing intensity from ecological theory and may influence how various management regimes affect biodiversity at the whole community scale. We examined effects of management regime and grazing intensity on plant species diversity, community composition, aboveground net primary production (ANPP), and soil compaction. Two management regimes (season-long continuous grazing and grazing and mowing alternated annually) and seven levels of grazing intensity were applied over the past 10 yr. We assessed how alpha diversity within patches and beta diversity across patches contributed to the diversity of the whole plot and how these relationships responded to both grazing intensity and management regime. We further divided beta diversity into nestedness and replacement components across lightly and heavily grazed patches within plots. The mixed grazing-mowing regime differed from the continuous grazing regime in that the former had a higher number of palatable species, higher species evenness, and higher Shannon-Wiener diversity, in both lightly and heavily grazed patches and the whole plots, and especially at moderate and high grazing intensities. The continuous grazing regime and the mixed grazing-mowing regime did not differ in total beta diversity. However, the nestedness component of total beta diversity was dominant in the continuous grazing regime. In contrast, species richness and ANPP did not differ significantly between the two management regimes, though soil hardness in heavily grazed patches was significantly higher under the continuous grazing regime than the mixed grazing-mowing regime. Loss of rare species under both management regimes, even at low to moderate grazing intensities, suggests that selective grazing and patch formation may not conform with the IDH. Our study indicates that the mixed grazing-mowing regime is more sustainable for long-term grassland management than the continuous grazing regime by controlling the creation of heavily grazed patches. These findings, integrating alpha-beta-gamma diversity and patch-scale approaches, provide a more thorough evaluation than the intermediate disturbance hypothesis of grazing management in terms of sustainability and biodiversity conservation in semiarid regions.
学科主题Ecology
出版地HOBOKEN
WOS关键词BETA-DIVERSITY ; FUNCTIONAL DIVERSITY ; PHYSICAL-PROPERTIES ; SPECIES-DIVERSITY ; LARGE HERBIVORES ; VEGETATION ; SOIL ; INTENSITY ; PRODUCTIVITY ; STEPPE
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000667707100009
出版者WILEY
资助机构National Natural Science Foundation of China [31630010, 31600365, 32071883] ; Inner Mongolia University [12000-15031907] ; China Postdoctoral Science Foundation [2016M591283]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/26724]  
专题植被与环境变化国家重点实验室
作者单位1.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
3.Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China
4.Hooper, David U.] Western Washington Univ, Dept Biol, Bellingham, WA 98225 USA
5.Inner Mongolia Agr Univ, Coll Ecol & Environm Sci, Dept Grassland Sci, Hohhot 010019, Peoples R China
6.Bakker, Jonathan D.] Univ Washington, Sch Environm & Forest Sci, Seattle, WA 98195 USA
7.Gianuca, Andros T.] German Ctr Integrat Biodivers Res iDiv, Deutsch Pl 5e, D-04103 Leipzig, Germany
8.Gianuca, Andros T.] UFZ Helmholtz Ctr Environm Res, Dept Community Ecol, Theodor Lieser Str 4, D-06120 Halle, Germany
9.Gianuca, Andros T.] Univ Fed Rio Grande do Norte, Dept Ecol, Natal, RN, Brazil
10.Texas A&M Univ, Dept Ecosyst Sci & Management, College Stn, TX 77843 USA
推荐引用方式
GB/T 7714		 Li, Wenhuai,Hooper, David U.,Wu, Liji,et al. Grazing regime alters plant community structure via patch-scale diversity in semiarid grasslands[J]. ECOSPHERE,2021,12(6).
APA Li, Wenhuai.,Hooper, David U..,Wu, Liji.,Bakker, Jonathan D..,Gianuca, Andros T..,...&Bai, Yongfei.(2021).Grazing regime alters plant community structure via patch-scale diversity in semiarid grasslands.ECOSPHERE,12(6).
MLA Li, Wenhuai,et al."Grazing regime alters plant community structure via patch-scale diversity in semiarid grasslands".ECOSPHERE 12.6(2021).

入库方式： OAI收割

来源：植物研究所

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