Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.actao.2011.03.004 |
Effects of rodent species, seed species, and predator cues on seed fate | |
Sivy, Kelly J.1; Ostoja, Steven M.2; Schupp, Eugene W.1,3; Durham, Susan3 | |
通讯作者 | Sivy, Kelly J. |
来源期刊 | ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
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ISSN | 1146-609X |
EISSN | 1873-6238 |
出版年 | 2011 |
卷号 | 37期号:4页码:321-328 |
英文摘要 | Seed selection, removal and subsequent management by granivorous animals is thought to be a complex interaction of factors including qualities of the seeds themselves (e.g., seed size, nutritional quality) and features of the local habitat (e.g. perceived predator risk). At the same time, differential seed selection and dispersal is thought to have profound effects on seed fate and potentially vegetation dynamics. In a feeding arena, we tested whether rodent species, seed species, and indirect and direct predation cues influence seed selection and handling behaviors (e.g., scatter hoarding versus larder hoarding) of two heteromyid rodents, Ord’s kangaroo rat (Dipodomys ordii) and the Great Basin pocket mouse (Perognathus parvus). The indirect cue was shrub cover, a feature of the environment. Direct cues, presented individually, were (1) control, (2) coyote (Canis latrans) vocalization, (3) coyote scent, (4) red fox (Vulpes vulpes) scent, or (5) short-eared owl (Asio flammeus) vocalization. We offered seeds of three sizes: two native grasses, Indian ricegrass (Achnatherum hymenoides) and bluebunch wheatgrass (Pseudoroegneria spicata), and the non-native cereal rye (Secale cereale), each in separate trays. Kangaroo rats preferentially harvested Indian ricegrass while pocket mice predominately harvested Indian ricegrass and cereal rye. Pocket mice were more likely to scatter hoard preferred seeds, whereas kangaroo rats mostly consumed and/or larder hoarded preferred seeds. No predator cue significantly affected seed preferences. However, both species altered seed handling behavior in response to direct predation cues by leaving more seeds available in the seed pool, though they responded to different predator cues. If these results translate to natural dynamics on the landscape, the two rodents are expected to have different impacts on seed survival and plant recruitment via their different seed selection and seed handling behaviors. (C) 2011 Elsevier Masson SAS. All rights reserved. |
英文关键词 | Great basin desert Desert rodents Granivory Predator cues Seed fate Seed removal |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000292356700004 |
WOS关键词 | RISK ALLOCATION HYPOTHESIS ; HETEROMYID RODENTS ; FORAGING BEHAVIOR ; DESERT RODENTS ; ORYZOPSIS-HYMENOIDES ; COMMUNITY STRUCTURE ; DIPODOMYS-MERRIAMI ; OWL PREDATION ; MICROHABITAT ; COMPETITION |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/166747 |
作者单位 | 1.Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA; 2.US Geol Survey, Western Ecol Res Ctr, Yosemite Field Stn, El Portal, CA 95318 USA; 3.Utah State Univ, Ctr Ecol, Logan, UT 84322 USA |
推荐引用方式 GB/T 7714 | Sivy, Kelly J.,Ostoja, Steven M.,Schupp, Eugene W.,et al. Effects of rodent species, seed species, and predator cues on seed fate[J]. United States Geological Survey,2011,37(4):321-328. |
APA | Sivy, Kelly J.,Ostoja, Steven M.,Schupp, Eugene W.,&Durham, Susan.(2011).Effects of rodent species, seed species, and predator cues on seed fate.ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,37(4),321-328. |
MLA | Sivy, Kelly J.,et al."Effects of rodent species, seed species, and predator cues on seed fate".ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 37.4(2011):321-328. |
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