Anomalous, extreme weather disrupts obligate seed dispersal mutualism: snow in a subtropical forest ecosystem

doi:10.1111/gcb.12245

	Anomalous, extreme weather disrupts obligate seed dispersal mutualism: snow in a subtropical forest ecosystem
	Zhou, Youbing 2; Newman, Chris ; Chen, Jin 2; Xie, Zongqiang; Macdonald, David W.
	2013
发表期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
卷号	19 期号:9 页码:2867-2877
摘要	Ongoing global climate change is predicted to increase the frequency and magnitude of extreme weather events, impacting population dynamics and community structure. There is, however, a critical lack of case studies considering how climatic perturbations affect biotic interactions. Here, we document how an obligate seed dispersal mutualism was disrupted by a temporally anomalous and meteorologically extreme interlude of unseasonably frigid weather, with accompanying snowstorms, in subtropical China, during January-February 2008. Based on the analysis of 5892 fecal samples (representing six mammalian seed dispersers), this event caused a substantial disruption to the relative seed dispersal function for the raisin tree Hovenia dulcis from prestorm 6.29 (2006) and 11.47 (2007), down to 0.35 during the storm (2008). Crucially, this was due to impacts on mammalian seed dispersers and not due to a paucity of fruit, where 4.63 fruit per branch were available in January 2008, vs. 3.73 in 2006 and 3.58 in 2007. An induced dietary shift occurred among omnivorous carnivores during this event, from the consumption fruit to small mammals and birds, reducing their role in seed dispersal substantially. Induced range shift extinguished the functionality of herbivorous mammals completely, however, seed dispersal function was compensated in part by three omnivorous carnivores during poststorm years, and thus while the mutualism remained intact it was enacted by a narrower assemblage of species, rendering the system more vulnerable to extrinsic perturbations. The storm's extended effects also had anthropogenic corollaries - migrating ungulates becoming exposed to heightened levels of illegal hunting - causing long-term modification to the seed dispersal community and mutualism dynamics. Furthermore, degraded forests proved especially vulnerable to the storm's effects. Considering increasing climate variability and anthropogenic disturbance, the impacts of such massive, aberrant events warrant conservation concern, while affording unique insights into the stability of mutualisms and the processes that structure biodiversity and mediate ecosystem dynamics.
关键词	climate change climate variability ecological interaction extreme weather event Hovenia dulcis mutualism resilience seed dispersal snowstorm
学科领域	Biodiversity Conservation ; Ecology ; Environmental Sciences
DOI	10.1111/gcb.12245
收录类别	SCI
语种	英语
WOS关键词	CLIMATE-CHANGE ; IMPACT ; EXTINCTION ; PHENOLOGY ; RESPONSES ; EVENTS ; SHIFTS ; TREE ; CONSEQUENCES ; VEGETATION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000322758000024
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2486
资助机构	Major State Basic Research Development Program of China (973 Program)(National Basic Research Program of China) ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Kadoorie Farm and Botanic Garden
作者邮箱	Zhou, Youbing/S-6079-2019
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28053
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Zhou, Youbing; Newman, Chris; Macdonald, David W.] Univ Oxford, Recanati Kaplan Ctr, Dept Zool, Wildlife Conservat Res Unit, Abingdon OX13 5QL, Oxon, England 3.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Youbing,Newman, Chris,Chen, Jin,et al. Anomalous, extreme weather disrupts obligate seed dispersal mutualism: snow in a subtropical forest ecosystem[J]. GLOBAL CHANGE BIOLOGY,2013,19(9):2867-2877.
APA	Zhou, Youbing,Newman, Chris,Chen, Jin,Xie, Zongqiang,&Macdonald, David W..(2013).Anomalous, extreme weather disrupts obligate seed dispersal mutualism: snow in a subtropical forest ecosystem.GLOBAL CHANGE BIOLOGY,19(9),2867-2877.
MLA	Zhou, Youbing,et al."Anomalous, extreme weather disrupts obligate seed dispersal mutualism: snow in a subtropical forest ecosystem".GLOBAL CHANGE BIOLOGY 19.9(2013):2867-2877.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
23640765.pdf（353KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文