干旱区生态环境知识资源中心(Arid): South American Dry Chaco rangelands: Positive effects of cattle trampling and transit on ecohydrological functioning

Arid

DOI	10.1002/eap.2800
	South American Dry Chaco rangelands: Positive effects of cattle trampling and transit on ecohydrological functioning
	Magliano, Patricio N.; Breshears, David D.; Murray, Francisco; Niborski, Marcos J.; Nosetto, Marcelo D.; Zou, Chris B.; Jobbagy, Esteban G.
通讯作者	Magliano, PN
来源期刊	ECOLOGICAL APPLICATIONS
ISSN	1051-0761
EISSN	1939-5582
出版年	2023
卷号	33 期号:3
英文摘要	Livestock production in drylands requires consideration of the ecological applications of ecohydrological redistribution of water. Intensive cattle trampling and the associated increase of surface runoff are common concerns for rangeland productivity and sustainability. Here, we highlight a regional livestock production system in which cattle trails and trampling surrounding an artificial impoundment are purposely managed to enhance redistribution and availability of water for cattle drinking. Based on literature synthesis and field measurements, we first describe cattle production systems and surface water redistribution in the Dry Chaco rangelands of South America, and then develop a conceptual framework to synthesize the ecohydrological impacts of livestock production on these ecosystems. Critical to this framework is the pioshere-a degraded overgrazed and overtrampled area where vegetation has difficulties growing, usually close to the water points. The Dry Chaco rangelands have three key distinctive characteristics associated with the flat sedimentary environment lacking fresh groundwater and the very extensive ranching conditions: (1) cattle drinking water is provided by artificial impoundments filled by runoff, (2) heavy trampling around the impoundment and its adjacent areas generates a piosphere that favors runoff toward the impoundment, and (3) the impoundment, piosphere, and extensive forage areas are hydrologically connected with a network of cattle trails. We propose an ecohydrological framework where cattle transit and trampling alter the natural water circulation of these ecosystems, affecting small fractions of the landscape through increased runoff (compaction in piosphere and trails), surface connectivity (convergence of trails to piosphere to impoundment), and ponding (compaction of the impoundment floor) that operate together making water harvesting and storage possible. These effects have likely generated a positive water feedback on the expansion of livestock in the region with a relatively low impact on forage production. We highlight the role of livestock transit as a geomorphological agent capable of reshaping the hydrology of flat sedimentary rangelands in ways that can be managed positively for sustainable ranching systems. We suggest that the Dry Chaco offers an alternative paradigm for rangelands in which cattle trampling may contribute to sustainable seminatural production systems with implications for other dry and flat rangelands of the world.
英文关键词	arid connectivity desertification land cover change land use change livestock piosphere runoff soil compaction
类型	Article
语种	英语
开放获取类型	Green Published
收录类别	SCI-E
WOS记录号	WOS:000923417300001
WOS关键词	PINYON-JUNIPER WOODLAND ; ROLLER CHOPPING RBI ; LIVESTOCK PRODUCTION ; SUPPLEMENTAL IRRIGATION ; VEGETATION PATTERNS ; WATER PRODUCTIVITY ; DRYLAND ECOSYSTEMS ; CARRYING-CAPACITY ; SEMIARID WOODLAND ; CARBON FLUXES
WOS类目	Ecology ; Environmental Sciences
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/2XILL650/395897
推荐引用方式 GB/T 7714	Magliano, Patricio N.,Breshears, David D.,Murray, Francisco,et al. South American Dry Chaco rangelands: Positive effects of cattle trampling and transit on ecohydrological functioning[J],2023,33(3).
APA	Magliano, Patricio N..,Breshears, David D..,Murray, Francisco.,Niborski, Marcos J..,Nosetto, Marcelo D..,...&Jobbagy, Esteban G..(2023).South American Dry Chaco rangelands: Positive effects of cattle trampling and transit on ecohydrological functioning.ECOLOGICAL APPLICATIONS,33(3).
MLA	Magliano, Patricio N.,et al."South American Dry Chaco rangelands: Positive effects of cattle trampling and transit on ecohydrological functioning".ECOLOGICAL APPLICATIONS 33.3(2023).