Grazing intensifies degradation of a Tibetan Plateau alpine meadow through plant-pest interaction

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	Grazing intensifies degradation of a Tibetan Plateau alpine meadow through plant-pest interaction
	Cao, Hui 1,2; Zhao, Xinquan 1,3; Wang, Shiping 4; Zhao, Liang 1; Duan, Jichuang 1,5; Zhang, Zhenhua 1; Ge, Shidong 1; Zhu, Xiaoxue 1,2
	2015-06-01
发表期刊	ECOLOGY AND EVOLUTION
卷号	5 期号:12 页码:2478-2486
文章类型	Article
摘要	Understanding the plant-pest interaction under warming with grazing conditions is critical to predict the response of alpine meadow to future climate change. We investigated the effects of experimental warming and grazing on the interaction between plants and the grassland caterpillar Gynaephora menyuanensis in an alpine meadow on the Tibetan Plateau in 2010 and 2011. Our results showed that grazing significantly increased nitrogen concentration in graminoids and sward openness with a lower sward height, sward coverage, and plant litter mass in the community. Grazing significantly increased G.menyuanensis body size and potential fecundity in 2010. The increases in female body size were about twofold greater than in males. In addition, grazing significantly increased G.menyuanensis density and its negative effects on aboveground biomass and graminoid coverage in 2011. We found that G.menyuanensis body size was significantly positively correlated with nitrogen concentration in graminoids but negatively correlated with plant litter mass. Even though warming did not significantly increased G.menyuanensis performance and the negative effects of G.menyuanensis on alpine meadow, the increases in G.menyuanensis growth rate and its negative effect on aboveground biomass under the warming with grazing treatment were significantly higher than those under the no warming with grazing treatment. The positive effects of grazing on G.menyuanensis performance and its damage were exacerbated by the warming treatment. Our results suggest that the fitness of G.menyuanensis would increase under future warming with grazing conditions, thereby posing a greater risk to alpine meadow and livestock production.; Understanding the plant-pest interaction under warming with grazing conditions is critical to predict the response of alpine meadow to future climate change. We investigated the effects of experimental warming and grazing on the interaction between plants and the grassland caterpillar Gynaephora menyuanensis in an alpine meadow on the Tibetan Plateau in 2010 and 2011. Our results showed that grazing significantly increased nitrogen concentration in graminoids and sward openness with a lower sward height, sward coverage, and plant litter mass in the community. Grazing significantly increased G.menyuanensis body size and potential fecundity in 2010. The increases in female body size were about twofold greater than in males. In addition, grazing significantly increased G.menyuanensis density and its negative effects on aboveground biomass and graminoid coverage in 2011. We found that G.menyuanensis body size was significantly positively correlated with nitrogen concentration in graminoids but negatively correlated with plant litter mass. Even though warming did not significantly increased G.menyuanensis performance and the negative effects of G.menyuanensis on alpine meadow, the increases in G.menyuanensis growth rate and its negative effect on aboveground biomass under the warming with grazing treatment were significantly higher than those under the no warming with grazing treatment. The positive effects of grazing on G.menyuanensis performance and its damage were exacerbated by the warming treatment. Our results suggest that the fitness of G.menyuanensis would increase under future warming with grazing conditions, thereby posing a greater risk to alpine meadow and livestock production.
关键词	Alpine Meadow Experimental Warming Grassland Caterpillar Grazing Gynaephora Menyuanensis Plant-pest Interaction Tibetan Plateau
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	BEHAVIORAL THERMOREGULATION ; GYNAEPHORA-GROENLANDICA ; NITROGEN-CONTENT ; CATERPILLARS ; LYMANTRIIDAE ; LEPIDOPTERA ; TEMPERATURE ; RESPONSES ; METAANALYSIS ; RESPIRATION
收录类别	SCI
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000356370400016
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/5546
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 2.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China 4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China 5.Binhai Res Inst Tianjin, Tianjin 300457, Peoples R China
推荐引用方式 GB/T 7714	Cao, Hui,Zhao, Xinquan,Wang, Shiping,et al. Grazing intensifies degradation of a Tibetan Plateau alpine meadow through plant-pest interaction[J]. ECOLOGY AND EVOLUTION,2015,5(12):2478-2486.
APA	Cao, Hui.,Zhao, Xinquan.,Wang, Shiping.,Zhao, Liang.,Duan, Jichuang.,...&Zhu, Xiaoxue.(2015).Grazing intensifies degradation of a Tibetan Plateau alpine meadow through plant-pest interaction.ECOLOGY AND EVOLUTION,5(12),2478-2486.
MLA	Cao, Hui,et al."Grazing intensifies degradation of a Tibetan Plateau alpine meadow through plant-pest interaction".ECOLOGY AND EVOLUTION 5.12(2015):2478-2486.

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