Grazing weakens temporal stabilizing effects of diversity in the Eurasian steppe

doi:10.1002/ece3.3669

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Grazing weakens temporal stabilizing effects of diversity in the Eurasian steppe
	Ren, Haiyan 7; Taube, Friedhelm 7; Stein, Claudia 1,8; Zhang, Yingjun 2; Bai, Yongfei 3; Hu, Shuijin 4,5
刊名	ECOLOGY AND EVOLUTION
	2018
卷号	8 期号:1 页码:231-241
关键词	diversity-stability relationship grazing intensity plant diversity plant functional groups semi-arid steppe species asynchrony temporal stability
ISSN号	2045-7758
DOI	10.1002/ece3.3669
文献子类	Article
英文摘要	Many biodiversity experiments have demonstrated that plant diversity can stabilize productivity in experimental grasslands. However, less is known about how diversity-stability relationships are mediated by grazing. Grazing is known for causing species losses, but its effects on plant functional groups (PFGs) composition and species asynchrony, which are closely correlated with ecosystem stability, remain unclear. We conducted a six-year grazing experiment in a semi-arid steppe, using seven levels of grazing intensity (0, 1.5, 3.0, 4.5, 6.0, 7.5, and 9.0 sheep per hectare) and two grazing systems (i.e., a traditional, continuous grazing system during the growing period (TGS), and a mixed one rotating grazing and mowing annually (MGS)), to examine the effects of grazing system and grazing intensity on the abundance and composition of PFGs and diversity-stability relationships. Ecosystem stability was similar between mixed and continuous grazing treatments. However, within the two grazing systems, stability was maintained through different pathways, that is, along with grazing intensity, persistence biomass variations in MGS, and compensatory interactions of PFGs in their biomass variations in TGS. Ecosystem temporal stability was not decreased by species loss but rather remain unchanged by the strong compensatory effects between PFGs, or a higher grazing-induced decrease in species asynchrony at higher diversity, and a higher grazing-induced increase in the temporal variation of productivity in diverse communities. Ecosystem stability of aboveground net primary production was not related to species richness in both grazing systems. High grazing intensity weakened the temporal stabilizing effects of diversity in this semi-arid grassland. Our results demonstrate that the productivity of dominant PFGs is more important than species richness for maximizing stability in this system. This study distinguishes grazing intensity and grazing system from diversity effects on the temporal stability, highlighting the need to better understand how grazing regulates ecosystem stability, plant diversity, and their synergic relationships.
学科主题	Ecology ; Evolutionary Biology
出版地	HOBOKEN
WOS关键词	ECOSYSTEM STABILITY ; INNER-MONGOLIA ; FUNCTIONAL DIVERSITY ; SPECIES-DIVERSITY ; BIODIVERSITY LOSS ; PRODUCTIVITY ; GRASSLANDS ; HERBIVORES ; RESPONSES ; GRADIENT
语种	英语
出版者	WILEY
WOS记录号	WOS:000419483200021
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31700389] ; Natural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu Province [BK20160738] ; Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG)
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/20615]
专题	植被与环境变化国家重点实验室
作者单位	1.Washington Univ, Tyson Res Ctr, St Louis, MO USA 2.Washington Univ, Dept Biol, St Louis, MO USA 3.China Agr Univ, Dept Grassland Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 5.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing, Jiangsu, Peoples R China 6.North Carolina State Univ, Dept Entomol & Plant Pathol, Raleigh, NC USA 7.Nanjing Agr Univ, Coll Agrograssland Sci, Coll Prataculture Sci, Nanjing, Jiangsu, Peoples R China 8.Univ Kiel, Inst Crop Sci & Plant Breeding Grass & Forage Sci, Kiel, Germany
推荐引用方式 GB/T 7714	Ren, Haiyan,Taube, Friedhelm,Stein, Claudia,et al. Grazing weakens temporal stabilizing effects of diversity in the Eurasian steppe[J]. ECOLOGY AND EVOLUTION,2018,8(1):231-241.
APA	Ren, Haiyan,Taube, Friedhelm,Stein, Claudia,Zhang, Yingjun,Bai, Yongfei,&Hu, Shuijin.(2018).Grazing weakens temporal stabilizing effects of diversity in the Eurasian steppe.ECOLOGY AND EVOLUTION,8(1),231-241.
MLA	Ren, Haiyan,et al."Grazing weakens temporal stabilizing effects of diversity in the Eurasian steppe".ECOLOGY AND EVOLUTION 8.1(2018):231-241.