Long term prevention of disturbance induces the collapse of a dominant species without altering ecosystem function

	Long term prevention of disturbance induces the collapse of a dominant species without altering ecosystem function
	Yu, Qiang 1,2; Wu, Honghui 1; Wang, Zhengwen 1; Flynn, Dan F. B.3,4; Yang, Hao 5; Lu, Fumei 6; Smith, Melinda 2; Han, Xingguo 1,7
刊名	scientific reports
	2015-09-21
卷号	5 期号:1 页码:1
中文摘要	limitation of disturbances, such as grazing and fire, is a key tool for nature reserve management and ecological restoration. while the role of these disturbances in shaping ecosystem structure and functioning has been intensively studied, less is known about the consequences of long-term prevention of grazing and fire. based on a 31-year study, we show that relative biomass of the dominant grass, leymus chinensis, of grasslands in northern china declined dramatically, but only after 21 years of exclusion of fire and grazing. however, aboveground net primary productivity (anpp) did not decline accordingly due to compensatory responses of several subdominant grass species. the decline in dominance of l. chinensis was not related to gradually changing climate during the same period, whereas experimentally imposed litter removal (simulating fire), mowing (simulating grazing), fire and moderate grazing enhanced dominance of l. chinensis significantly. thus, our findings show that disturbances can be critical to maintain the dominance of key grass species in semiarid grassland, but that the collapse of a dominant species does not necessarily result in significant change in anpp if there are species in the community capable of compensating for loss of a dominant.
英文摘要	limitation of disturbances, such as grazing and fire, is a key tool for nature reserve management and ecological restoration. while the role of these disturbances in shaping ecosystem structure and functioning has been intensively studied, less is known about the consequences of long-term prevention of grazing and fire. based on a 31-year study, we show that relative biomass of the dominant grass, leymus chinensis, of grasslands in northern china declined dramatically, but only after 21 years of exclusion of fire and grazing. however, aboveground net primary productivity (anpp) did not decline accordingly due to compensatory responses of several subdominant grass species. the decline in dominance of l. chinensis was not related to gradually changing climate during the same period, whereas experimentally imposed litter removal (simulating fire), mowing (simulating grazing), fire and moderate grazing enhanced dominance of l. chinensis significantly. thus, our findings show that disturbances can be critical to maintain the dominance of key grass species in semiarid grassland, but that the collapse of a dominant species does not necessarily result in significant change in anpp if there are species in the community capable of compensating for loss of a dominant.
WOS标题词	science & technology
类目[WOS]	multidisciplinary sciences
研究领域[WOS]	science & technology - other topics
关键词[WOS]	native tallgrass prairie ; inner-mongolia ; community structure ; plant-communities ; global change ; grassland ; stability ; dynamics ; biodiversity ; diversity
收录类别	SCI
语种	英语
WOS记录号	WOS:000361464900001
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/5506]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110016, Peoples R China 2.Colorado State Univ, Dept Biol, Grad Degree Program Ecol, Ft Collins, CO 80523 USA 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Global Change & Alpine Ecosyst Res Lab, Xining 810008, Peoples R China 4.Univ Zurich, Inst Evolutionary Biol & Environm Studies, CH-8057 Zurich, Switzerland 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 6.Shenzhen Baoan Qianlong Sch, Shenzhen 518131, Peoples R China 7.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yu, Qiang,Wu, Honghui,Wang, Zhengwen,et al. Long term prevention of disturbance induces the collapse of a dominant species without altering ecosystem function[J]. scientific reports,2015,5(1):1.
APA	Yu, Qiang.,Wu, Honghui.,Wang, Zhengwen.,Flynn, Dan F. B..,Yang, Hao.,...&Han, Xingguo.(2015).Long term prevention of disturbance induces the collapse of a dominant species without altering ecosystem function.scientific reports,5(1),1.
MLA	Yu, Qiang,et al."Long term prevention of disturbance induces the collapse of a dominant species without altering ecosystem function".scientific reports 5.1(2015):1.