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Central Place Foraging by Beavers (Castor canadensis): A Test of Foraging Predictions and the Impact of Selective Feeding on the Growth Form of Cottonwoods (Populus fremontii)
Several predictions of central place foraging theory were tested. As predicted, beavers foraged more selectively at increasing distance from the central place. With increasing distance from the river's edge, beavers cut fewer branches and deleted small branches from their diet. Large branches w...
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Published in: | Oecologia 1985-07, Vol.66 (4), p.558-562 |
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container_title | Oecologia |
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creator | McGinley, Mark A. Whitham, Thomas G. |
description | Several predictions of central place foraging theory were tested. As predicted, beavers foraged more selectively at increasing distance from the central place. With increasing distance from the river's edge, beavers cut fewer branches and deleted small branches from their diet. Large branches were favored at all distances, which differs from patterns observed in previous studies of beaver foraging. This difference, however, is expected and supports Schoener's (1979) predictions which are based on differences between provisioning costs and item size. The selective harvesting of branches predicted by foraging theory affects plant growth form and may influence plant reproductive patterns. High rates of branch removal caused cottonwoods to develop a shrubby architecture. The importance of selective branch choice by beavers on patterns of cottonwood reproduction (i.e., delayed sexual maturity and induced cloning) is discussed. |
doi_str_mv | 10.1007/BF00379350 |
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As predicted, beavers foraged more selectively at increasing distance from the central place. With increasing distance from the river's edge, beavers cut fewer branches and deleted small branches from their diet. Large branches were favored at all distances, which differs from patterns observed in previous studies of beaver foraging. This difference, however, is expected and supports Schoener's (1979) predictions which are based on differences between provisioning costs and item size. The selective harvesting of branches predicted by foraging theory affects plant growth form and may influence plant reproductive patterns. High rates of branch removal caused cottonwoods to develop a shrubby architecture. The importance of selective branch choice by beavers on patterns of cottonwood reproduction (i.e., delayed sexual maturity and induced cloning) is discussed.</description><subject>Animal and plant ecology</subject><subject>Animal feeding behavior</subject><subject>Animal, plant and microbial ecology</subject><subject>Autoecology</subject><subject>Biological and medical sciences</subject><subject>Branches</subject><subject>Castor canadensis</subject><subject>Diet</subject><subject>Food</subject><subject>Food security</subject><subject>Foraging</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>Herbivores</subject><subject>Plant growth</subject><subject>Plants</subject><subject>Tree growth</subject><issn>0029-8549</issn><issn>1432-1939</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1985</creationdate><recordtype>article</recordtype><recordid>eNp90ctO3DAUBmCralWmtJuuq8qLCgFSqG_xhR1EHUBC6kjQdeQ4DgQl9tR2QDxVX7EOMx12XXnxfz5H9g_AZ4xOMELi-_kSISoULdEbsMCMkgIrqt6CBUJEFbJkag98iPEBIcxwWb4He0RSjIRSC_Cnsi4FPcDVoI2FSx_0Xe_uYPMMz61-tCHCw0rH5AM02unWutjHo1N4Bm9tTNB3r1dWwba9Sb13EWrXwnRv4dW41uaF3djB5vAx77DZZe_dC7kI_indz2PG2VU-Je-evG_z5pVfT8MUYRfs6F3q-6OP4F2nh2g_bc998Gv547a6LK5_XlxVZ9eFoZyngnEjWMOk0o0ySDaYKIspKykTJeOaYFMSqTuuKJdY5AwZJU1pqSTaGEXpPjjczF0H_3vKT63HPho7DNpZP8UaSyFl_sYSZ3rwf8oIQpzLDI830AQfY7BdvQ79qMNzjVE9N1m_Npnx1-3UqRltu6P_qsvg2xboaPTQBe1MH3dOEc6UmJd-2bCHucRdzAgWXGD6F2EYrhQ</recordid><startdate>198507</startdate><enddate>198507</enddate><creator>McGinley, Mark A.</creator><creator>Whitham, Thomas G.</creator><general>Springer-Verlag</general><general>Springer</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>C1K</scope><scope>7X8</scope></search><sort><creationdate>198507</creationdate><title>Central Place Foraging by Beavers (Castor canadensis): A Test of Foraging Predictions and the Impact of Selective Feeding on the Growth Form of Cottonwoods (Populus fremontii)</title><author>McGinley, Mark A. ; Whitham, Thomas G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c366t-46c74b489ab9c08b129e1345347546a21c528af69368179e10c98c5e382acc933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1985</creationdate><topic>Animal and plant ecology</topic><topic>Animal feeding behavior</topic><topic>Animal, plant and microbial ecology</topic><topic>Autoecology</topic><topic>Biological and medical sciences</topic><topic>Branches</topic><topic>Castor canadensis</topic><topic>Diet</topic><topic>Food</topic><topic>Food security</topic><topic>Foraging</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>Herbivores</topic><topic>Plant growth</topic><topic>Plants</topic><topic>Tree growth</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>McGinley, Mark A.</creatorcontrib><creatorcontrib>Whitham, Thomas G.</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>MEDLINE - Academic</collection><jtitle>Oecologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>McGinley, Mark A.</au><au>Whitham, Thomas G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Central Place Foraging by Beavers (Castor canadensis): A Test of Foraging Predictions and the Impact of Selective Feeding on the Growth Form of Cottonwoods (Populus fremontii)</atitle><jtitle>Oecologia</jtitle><addtitle>Oecologia</addtitle><date>1985-07</date><risdate>1985</risdate><volume>66</volume><issue>4</issue><spage>558</spage><epage>562</epage><pages>558-562</pages><issn>0029-8549</issn><eissn>1432-1939</eissn><coden>OECOBX</coden><abstract>Several predictions of central place foraging theory were tested. As predicted, beavers foraged more selectively at increasing distance from the central place. With increasing distance from the river's edge, beavers cut fewer branches and deleted small branches from their diet. Large branches were favored at all distances, which differs from patterns observed in previous studies of beaver foraging. This difference, however, is expected and supports Schoener's (1979) predictions which are based on differences between provisioning costs and item size. The selective harvesting of branches predicted by foraging theory affects plant growth form and may influence plant reproductive patterns. High rates of branch removal caused cottonwoods to develop a shrubby architecture. The importance of selective branch choice by beavers on patterns of cottonwood reproduction (i.e., delayed sexual maturity and induced cloning) is discussed.</abstract><cop>Berlin</cop><pub>Springer-Verlag</pub><pmid>28310799</pmid><doi>10.1007/BF00379350</doi><tpages>5</tpages></addata></record> |
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source | JSTOR Archival Journals and Primary Sources Collection; Springer LINK Archives |
subjects | Animal and plant ecology Animal feeding behavior Animal, plant and microbial ecology Autoecology Biological and medical sciences Branches Castor canadensis Diet Food Food security Foraging Fundamental and applied biological sciences. Psychology General aspects Herbivores Plant growth Plants Tree growth |
title | Central Place Foraging by Beavers (Castor canadensis): A Test of Foraging Predictions and the Impact of Selective Feeding on the Growth Form of Cottonwoods (Populus fremontii) |
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