Optimal central-place foraging by beavers: Tree-size selection in relation to defensive chemicals of quaking aspen
dc.contributor.author | Jenkins, Stephen H. | en_US |
dc.contributor.author | Basey, John M. | en_US |
dc.contributor.author | Busher, Peter E. | en_US |
dc.date.accessioned | 2006-09-11T19:22:42Z | |
dc.date.available | 2006-09-11T19:22:42Z | |
dc.date.issued | 1988-07 | en_US |
dc.identifier.citation | Basey, John M.; Jenkins, Stephen H.; Busher, Peter E.; (1988). "Optimal central-place foraging by beavers: Tree-size selection in relation to defensive chemicals of quaking aspen." Oecologia 76(2): 278-282. <http://hdl.handle.net/2027.42/47775> | en_US |
dc.identifier.issn | 1432-1939 | en_US |
dc.identifier.issn | 0029-8549 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/47775 | |
dc.description.abstract | At a newly occupied pond, beavers preferentially felled aspen smaller than 7.5 cm in diameter and selected against larger size classes. After one year of cutting, 10% of the aspen had been cut and 14% of the living aspen exhibited the juvenile growth form. A phenolic compound which may act as a deterrent to beavers was found in low concentrations in aspen bark, and there was no significant regression of relative concentration of this compound on tree diameter. At a pond which had been intermittently occupied by beavers for over 20 years, beavers selected against aspen smaller than 4.5 cm in diameter, and selected in favor of aspen larger than 19.5 cm in diameter. After more than 28 years of cutting at this site, 51% of the aspen had been cut and 49% of the living aspen were juvenileform. The phenolic compound was found in significantly higher concentrations in aspen bark than at the newly occupied site, and there was a significant negative regression of relative concentration on tree diameter. The results of this study show that responses to browsing by trees place constraints on the predictive value of standard energy-based optimal foraging models, and limitations on the use of such models. Future models should attempt to account for inducible responses of plants to damage and increases in concentrations of secondary metabolites through time. | en_US |
dc.format.extent | 623154 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 | Populus Tremuloides | en_US |
dc.subject.other | Life Sciences | en_US |
dc.subject.other | Castor Canadensis | en_US |
dc.subject.other | Plant Sciences | en_US |
dc.subject.other | Ecology | en_US |
dc.subject.other | Plant Defense | en_US |
dc.subject.other | Central-place Foraging | en_US |
dc.subject.other | Optimal Foraging | en_US |
dc.subject.other | Juvenile-form Plants | en_US |
dc.title | Optimal central-place foraging by beavers: Tree-size selection in relation to defensive chemicals of quaking aspen | 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, University of Nevada, 89557, Reno, NV, USA; School of Natural Resources, University of Michigan, 48109-1115, Ann Arbor, MI, USA | en_US |
dc.contributor.affiliationother | Department of Biology, University of Nevada, 89557, Reno, NV, USA | en_US |
dc.contributor.affiliationother | College of Basic Studies, Boston University, 871 Commonwealth Avenue, 02215, Boston, MA, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/47775/1/442_2004_Article_BF00379963.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00379963 | en_US |
dc.identifier.source | Oecologia | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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