Arid
DOI10.1016/j.jaridenv.2010.12.021
Plant productivity, predation, and the abundance of black-tailed jackrabbits in the Chihuahuan Desert of Mexico
Hernandez, L.1; Laundre, J. W.1; Grajales, K. M.1; Portales, G. L.2; Lopez-Portillo, J.3; Gonzalez-Romero, A.3; Garcia, A.1; Martinez, J. M.4
通讯作者Hernandez, L.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
出版年2011
卷号75期号:11页码:1043-1049
英文摘要

The abundance of black-tailed jackrabbits (Lepus californicus) can fluctuate dramatically. We used data from the Chihuahuan Desert to test the relative strength of top-down (predation) or bottom-up (food availability) limiting forces. Predictions for the top-down hypothesis were, 1) a positive relationship between coyote (Canis latrans) and jackrabbit abundance (numerical response) and 2) a positive relationship between percent occurrence of jackrabbits in coyote scats and jackrabbit abundance (functional response). Predictions for the bottom-up hypothesis were, 1) plant productivity is directly related to precipitation, 2) jackrabbit abundance is positively related to precipitation and plant productivity, and 3) changes in abundance of jackrabbits over the reproductive season will be directly related to precipitation and plant productivity. We found a limited numerical response but no functional response of coyotes to jackrabbit abundance. Forb productivity was significantly related to annual precipitation levels (r(2) = 0.69, p = 0.002). Grass productivity was related to annual precipitation (r(2) = 0.34, p = 0.028). Jackrabbit abundance (r(2) = 0.38. p = 0.002) and changes in abundance (r(2) = 0.73, p < 0.001) were significantly related to precipitation and forb and grass productivity. We conclude that precipitation levels and plant productivity affect jackrabbit abundance more than predation levels. (C) 2011 Elsevier Ltd. All rights reserved.


英文关键词Lepus californicus Coyotes Top-down Bottom-up Chihuahuan Desert Arid environments Numerical response
类型Article
语种英语
国家Mexico
收录类别SCI-E
WOS记录号WOS:000294512200010
WOS关键词FOOD-HABITS ; SOUTHEASTERN IDAHO ; LEPUS-CALIFORNICUS ; PREY ABUNDANCE ; CANIS-LATRANS ; JACK RABBITS ; POPULATION ; RESPONSES ; COMMUNITIES ; VEGETATION
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/2XILL650/168920
作者单位1.Ctr Reg Durango, Inst Ecol AC, Durango 34100, Mexico;
2.Inst Nacl Ecol, Mexico City 04530, DF, Mexico;
3.Inst Ecol AC, Xalapa 91070, Veracruz, Mexico;
4.Univ Autonoma Ciudad Juarez, Ciudad Juarez 32310, Chihuahua, Mexico
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GB/T 7714
Hernandez, L.,Laundre, J. W.,Grajales, K. M.,et al. Plant productivity, predation, and the abundance of black-tailed jackrabbits in the Chihuahuan Desert of Mexico[J],2011,75(11):1043-1049.
APA Hernandez, L..,Laundre, J. W..,Grajales, K. M..,Portales, G. L..,Lopez-Portillo, J..,...&Martinez, J. M..(2011).Plant productivity, predation, and the abundance of black-tailed jackrabbits in the Chihuahuan Desert of Mexico.JOURNAL OF ARID ENVIRONMENTS,75(11),1043-1049.
MLA Hernandez, L.,et al."Plant productivity, predation, and the abundance of black-tailed jackrabbits in the Chihuahuan Desert of Mexico".JOURNAL OF ARID ENVIRONMENTS 75.11(2011):1043-1049.
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