Arid
DOI10.1016/j.jaridenv.2008.09.014
Diet of a fossorial rodent (Octodontidae), above-ground food availability, and changes related to cattle grazing in the Central Monte (Argentina)
Rosi, M. I.1; Puig, S.1; Cona, M. I.1; Videla, F.1; Mendez, E.2; Roig, V. G.1
通讯作者Rosi, M. I.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
出版年2009
卷号73期号:3页码:273-279
英文摘要

Overgrazing by livestock has Caused desertification in the Monte, where ctenomyids and livestock share grasses as main food items. The diet of Ctenomys eremophilus, above-ground food availability and changes related to cattle grazing are analyzed in the arid plain of Mendoza, Argentina. The most available categories were grasses, followed by low shrubs and tall shrubs. Tuco-tucos showed dietary generalism, ate mainly above-ground plant parts, preferred grasses and avoided shrubs at both grazed and ungrazed sites. Plant cover, grass diversity and availability decreased under livestock grazing, which was reflected in the diet by a lower percentage of grasses, a shift toward low shrubs and higher number of frequently used resources, Tuco-tucos in the grazed paddock compensated for lower consumption of vegetative plant parts by increasing the use of Prosopis flexuosa pods stored inside burrows. Moreover, greater dietary variation among individuals suggests foraging restricted to the items closest to burrow holes. These feeding tactics would allow them to reduce above-ground foraging as a response to high raptor predation risk due to increased bare soil. The plant recovery detected during the rest period, favoured by moderate stocking rate and rotational grazing system, Would allow coexistence of tuco-tucos and cattle. (C) 2008 Elsevier Ltd. All rights reserved.


英文关键词Arid environment Ctenomys Feeding strategies Livestock grazing Subterranean mammals
类型Article
语种英语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000263791100005
WOS关键词ARID RANGELANDS ; PREDATION RISK ; MENDOZA PLAIN ; SMALL MAMMALS ; DESERT ; POPULATIONS ; VEGETATION ; DIVERSITY ; SYSTEMS ; CAVIES
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/2XILL650/161272
作者单位1.IADIZA, Grp Ecol & Manejo Vertebrados Silvestres, RA-5500 Mendoza, Argentina;
2.IADIZA, Grp Bot & Fitosociol, RA-5500 Mendoza, Argentina
推荐引用方式
GB/T 7714
Rosi, M. I.,Puig, S.,Cona, M. I.,et al. Diet of a fossorial rodent (Octodontidae), above-ground food availability, and changes related to cattle grazing in the Central Monte (Argentina)[J],2009,73(3):273-279.
APA Rosi, M. I.,Puig, S.,Cona, M. I.,Videla, F.,Mendez, E.,&Roig, V. G..(2009).Diet of a fossorial rodent (Octodontidae), above-ground food availability, and changes related to cattle grazing in the Central Monte (Argentina).JOURNAL OF ARID ENVIRONMENTS,73(3),273-279.
MLA Rosi, M. I.,et al."Diet of a fossorial rodent (Octodontidae), above-ground food availability, and changes related to cattle grazing in the Central Monte (Argentina)".JOURNAL OF ARID ENVIRONMENTS 73.3(2009):273-279.
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