干旱区生态环境知识资源中心(Arid): Rewilding of large herbivore communities in high elevation Puna: geographic segregation and no evidence of positive effects on peatland productivity

Arid

DOI	10.1007/s10113-020-01704-8
	Rewilding of large herbivore communities in high elevation Puna: geographic segregation and no evidence of positive effects on peatland productivity
	Navarro, Carlos J.; Izquierdo, Andrea E.; Araoz, Ezequiel; Foguet, Javier; Grau, H. Ricardo
通讯作者	Navarro, CJ
来源期刊	REGIONAL ENVIRONMENTAL CHANGE
ISSN	1436-3798
EISSN	1436-378X
出版年	2020
卷号	20 期号:4
英文摘要	During the past decades, the Argentine Puna (a subtropical high elevation desert of c. 14 million hectares) has been going through a process of rewilding of large herbivore communities. In response to rural population outmigration and resulting livestock reduction accompanied by protection measures, large wild herbivores such as vicunas increased. To explore the ecological consequences of this transition, we analysed the spatial patterns of wild herbivores and livestock in relation to human settlements, and we estimated the changes in vegetation productivity of peatlands, using NDVI derived from MODIS satellite images between 2001 and 2012. Peatlands are key ecosystems in high elevation deserts; they regulate water and carbon fluxes and provide most forage for livestock and wildlife. A field survey of 50 peatlands revealed that travel time from human settlements was positively correlated with the wild herbivore abundance, and negatively correlated with livestock abundance (especially sheep and goats). Thus, it is a good indicator of livestock use. At the regional scale, after controlling for the physical and climatic variables of the 8134 peatlands, accessibility from human settlements explained less than 0.1% of mean and interannual NDVI variability. These results provide no evidence of livestock-induced degradation. Furthermore, likely due to rainfall increase, peatlands showed an overall positive NDVI trend between 2001 and 2012, but isolated peatlands showed comparatively more negative NDVI trends during the same period, possibly associated with increased wildlife herbivory. Similar rewilding processes could occur in many mountain regions undergoing decreasing human population and marginal land uses. Our study suggests that traditional management could contribute to the productivity, stability, and resilience of peatlands.
英文关键词	Herbivory Land use change Rewilding Peatlands Primary productivity Puna
类型	Article
语种	英语
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000570700100001
WOS关键词	LAKE FLUCTUATIONS ; NATIONAL-PARK ; VEGETATION ; ECOLOGY ; HETEROGENEITY ; TRANSITION ; BOFEDALES ; MIGRATION ; KNOWLEDGE ; LIVESTOCK
WOS类目	Environmental Sciences ; Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326360
作者单位	[Navarro, Carlos J.; Izquierdo, Andrea E.; Araoz, Ezequiel; Foguet, Javier; Grau, H. Ricardo] Univ Nacl Tucuman, Consejo Nacl Invest Cient & Tecnol CONICET, Inst Ecol Reg, CC34 CP4107 Yerba Buena, San Miguel De Tucuman, Argentina
推荐引用方式 GB/T 7714	Navarro, Carlos J.,Izquierdo, Andrea E.,Araoz, Ezequiel,et al. Rewilding of large herbivore communities in high elevation Puna: geographic segregation and no evidence of positive effects on peatland productivity[J],2020,20(4).
APA	Navarro, Carlos J.,Izquierdo, Andrea E.,Araoz, Ezequiel,Foguet, Javier,&Grau, H. Ricardo.(2020).Rewilding of large herbivore communities in high elevation Puna: geographic segregation and no evidence of positive effects on peatland productivity.REGIONAL ENVIRONMENTAL CHANGE,20(4).
MLA	Navarro, Carlos J.,et al."Rewilding of large herbivore communities in high elevation Puna: geographic segregation and no evidence of positive effects on peatland productivity".REGIONAL ENVIRONMENTAL CHANGE 20.4(2020).