Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0140-1963 |
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 |
推荐引用方式 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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