干旱区生态环境知识资源中心(Arid): Impact of different destocking strategies on the resilience of dry rangelands

Arid

DOI	10.1002/ece3.10102
	Impact of different destocking strategies on the resilience of dry rangelands
	Vignal, Toyo; Baudena, Mara; Mayor, Angeles Garcia; Sherratt, Jonathan A.
通讯作者	Vignal, T
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2023
卷号	13 期号:5
英文摘要	Half of the world's livestock live in (semi-)arid regions, where a large proportion of people rely on animal husbandry for their survival. However, overgrazing can lead to land degradation and subsequent socio-economic crises. Sustainable management of dry rangeland requires suitable stocking strategies and has been the subject of intense debate in the last decades. Our goal is to understand how variations in stocking strategies affect the resilience of dry rangelands. We describe rangeland dynamics through a simple mathematical model consisting of a system of coupled differential equations. In our model, livestock density is limited only by forage availability, which is itself limited by water availability. We model processes typical of dryland vegetation as a strong Allee effect, leading to bistability between a vegetated and a degraded state, even in the absence of herbivores. We study analytically the impact of varying the stocking density and the destocking adaptivity on the resilience of the system to the effects of drought. By using dynamical systems theory, we look at how different measures of resilience are affected by variations in destocking strategies. We find that the following: (1) Increasing stocking density decreases resilience, giving rise to an expected trade-off between productivity and resilience. (2) There exists a maximal sustainable livestock density above which the system can only be degraded. This carrying capacity is common to all strategies. (3) Higher adaptivity of the destocking rate to available forage makes the system more resilient: the more adaptive a system is, the bigger the losses of vegetation it can recover from, without affecting the long-term level of productivity. The first two results emphasize the need for suitable dry rangeland management strategies, to prevent degradation resulting from the conflict between profitability and sustainability. The third point offers a theoretical suggestion for such a strategy.
英文关键词	adaptive management consumer-resource dry rangeland resilience
类型	Article
语种	英语
开放获取类型	Green Published, Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000998377400001
WOS关键词	GRAZING SYSTEMS ; CLIMATE-CHANGE ; VEGETATION ; DROUGHT ; DYNAMICS ; LIVESTOCK ; NONEQUILIBRIUM ; STABILITY ; PATTERNS ; DRYLANDS
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396015
推荐引用方式 GB/T 7714	Vignal, Toyo,Baudena, Mara,Mayor, Angeles Garcia,et al. Impact of different destocking strategies on the resilience of dry rangelands[J],2023,13(5).
APA	Vignal, Toyo,Baudena, Mara,Mayor, Angeles Garcia,&Sherratt, Jonathan A..(2023).Impact of different destocking strategies on the resilience of dry rangelands.ECOLOGY AND EVOLUTION,13(5).
MLA	Vignal, Toyo,et al."Impact of different destocking strategies on the resilience of dry rangelands".ECOLOGY AND EVOLUTION 13.5(2023).