Sociality of Columbian ground squirrels in relation to their seasonal energy intake
dc.contributor.author | Belovsky, Gary E. | en_US |
dc.contributor.author | Ritchie, Mark E. | en_US |
dc.date.accessioned | 2006-09-11T19:23:32Z | |
dc.date.available | 2006-09-11T19:23:32Z | |
dc.date.issued | 1990-07 | en_US |
dc.identifier.citation | Ritchie, Mark E.; Belovsky, Gary E.; (1990). "Sociality of Columbian ground squirrels in relation to their seasonal energy intake." Oecologia 83(4): 495-503. <http://hdl.handle.net/2027.42/47787> | en_US |
dc.identifier.issn | 1432-1939 | en_US |
dc.identifier.issn | 0029-8549 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/47787 | |
dc.description.abstract | Seasonal energy intake was estimated for ten populations of Columbian ground squirrels ( Spermophilus columbianus ) in northwestern Montana. We calculated daily energy intake for an average ground squirrel in each population using measurements of feeding time, consumption rates of different vegetation types (monocots vs. dicots), and the proportion of monocots and dicots in the diet. These daily energy intakes were multiplied by the length of the plant growing season for each population to estimate seasonal energy intake, i.e. over the ground squirrel active season. Amicable interaction rates measured for each population varied with seasonal energy intake, but not with environmental heterogeneity, sex ratio, or the ratio of adults to juveniles. In particular, amicable interactions among adult-juvenile and juvenile-juvenile pairs increased as seasonal energy intake decreased. The proportion of females breeding as yearlings increased as seasonal energy intake increased. This suggests that “harsh” environments reduce the energy available for juvenile growth and development, leading to delayed dispersal and age at first reproduction. These responses may promote the formation of kin groups and increased amicable interactions within those groups. The length of the plant growing season may determine environmental “harshness” across elevational gradients, but at a particular elevation, “harshness” may depend on factors determining daily food intake. | en_US |
dc.format.extent | 915227 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Springer-Verlag | en_US |
dc.subject.other | Amicable Interactions | en_US |
dc.subject.other | Ecology | en_US |
dc.subject.other | Life Sciences | en_US |
dc.subject.other | Social Behavior | en_US |
dc.subject.other | Ground Squirrels | en_US |
dc.subject.other | Plant Sciences | en_US |
dc.subject.other | Energy Intake | en_US |
dc.subject.other | Plant Growing Season | en_US |
dc.title | Sociality of Columbian ground squirrels in relation to their seasonal energy intake | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Biology and School of Natural Resources, University of Michigan, 48109, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationum | School of Natural Resources, University of Michigan, 48109, Ann Arbor, MI, USA; Department of Ecology, Evolution, and Behavior, University of Minnesota, 55455, Minneapolis, MN, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/47787/1/442_2004_Article_BF00317200.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00317200 | en_US |
dc.identifier.source | Oecologia | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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