Black Bear (Ursus americanus) Foraging on Black Cottonwood (Populus trichocarpa) Catkins in Southeast Alaska
Black Bears (Ursus americanus) in southeastern Alaska forage intensively on seed pods and male and female catkins of Black Cottonwood (Populus trichocarpa), often breaking many branches from the trees. We examined the relationship of tree damage to tree size and sex, and to content of selected nutri...
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| Veröffentlicht in: | Northwestern naturalist (Olympia, Wash.) Wash.), 2012-12, Vol.93 (3), p.211-219 |
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| creator | Willson, Mary F. Pendleton, Grey W. Jones, J. Douglas Craig, Laurie F. Sherwin, Amy E. |
| description | Black Bears (Ursus americanus) in southeastern Alaska forage intensively on seed pods and male and female catkins of Black Cottonwood (Populus trichocarpa), often breaking many branches from the trees. We examined the relationship of tree damage to tree size and sex, and to content of selected nutrients in the catkins. Tree damage was related to tree girth: medium-size trees were more heavily damaged than small or large trees, possibly because more branches can easily be reached from a safe perch near the trunk. Overall, female trees were more heavily damaged than males. Foraging intensity was not clearly related to the content of important elements (N, P, K, Ca, C) in catkins and seed pods. Concentrated use of cottonwoods in the study area may occur because high human density offers some protection of small Black Bears from larger bears, and medium-sized cottonwoods are common in this recently deglaciated, early-successional area. |
| doi_str_mv | 10.1898/11-22.1 |
| format | Article |
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Concentrated use of cottonwoods in the study area may occur because high human density offers some protection of small Black Bears from larger bears, and medium-sized cottonwoods are common in this recently deglaciated, early-successional area.</description><identifier>ISSN: 1051-1733</identifier><identifier>EISSN: 1938-5315</identifier><identifier>DOI: 10.1898/11-22.1</identifier><language>eng</language><publisher>Department of Psychology, Indiana University, Bloomington, Indiana 47405: Society for Northwestern Vertebrate Biology</publisher><subject>Alaska ; Animal behavior ; Bears ; Black Bear ; Black bears ; Black Cottonwood ; Branches ; DNA damage ; Fire damage ; Foraging ; foraging behavior ; Modeling ; Populus trichocarpa ; Seed pods ; Seeds ; Tree trunks ; Trees ; Ursus americanus ; Wildlife damage management</subject><ispartof>Northwestern naturalist (Olympia, Wash.), 2012-12, Vol.93 (3), p.211-219</ispartof><rights>Copyright Society for Northwestern Vertebrate Biology Winter 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b1500-1f9b474536ca7a51338098454ab5bd1484b654a5560aba1b640aa86220fde8f3</citedby><cites>FETCH-LOGICAL-b1500-1f9b474536ca7a51338098454ab5bd1484b654a5560aba1b640aa86220fde8f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/41811920$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/41811920$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,27901,27902,57992,58225</link.rule.ids></links><search><creatorcontrib>Willson, Mary F.</creatorcontrib><creatorcontrib>Pendleton, Grey W.</creatorcontrib><creatorcontrib>Jones, J. 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Foraging intensity was not clearly related to the content of important elements (N, P, K, Ca, C) in catkins and seed pods. Concentrated use of cottonwoods in the study area may occur because high human density offers some protection of small Black Bears from larger bears, and medium-sized cottonwoods are common in this recently deglaciated, early-successional area.</description><subject>Alaska</subject><subject>Animal behavior</subject><subject>Bears</subject><subject>Black Bear</subject><subject>Black bears</subject><subject>Black Cottonwood</subject><subject>Branches</subject><subject>DNA damage</subject><subject>Fire damage</subject><subject>Foraging</subject><subject>foraging behavior</subject><subject>Modeling</subject><subject>Populus trichocarpa</subject><subject>Seed pods</subject><subject>Seeds</subject><subject>Tree trunks</subject><subject>Trees</subject><subject>Ursus americanus</subject><subject>Wildlife damage management</subject><issn>1051-1733</issn><issn>1938-5315</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kE1Lw0AQQIMoWKv4C4QFEdtD6s5-pJtjG6wKBQXreZmkSZs2zcbdBPHfuyXizdPMMG_eMBME10AnoGL1ABAyNoGTYAAxV6HkIE99TiWEMOX8PLhwbkcpkzLig6CaV5jtyTxHS0Yf1nWO4CG3ZYZ158ZkYSxuynpDTE16MjFta-ovY9Zk9GaarvITree3JkPb4Jgk2O7L2pGyJu-ma7c5upbMKnR7vAzOCqxcfvUbh8Fq8bhKnsPl69NLMluGKUhKQyjiVEyF5FGGU5TAuaKxElJgKtM1CCXSyBf-AIopQhoJiqgixmixzlXBh8Ftr22s-exy1-qd6WztN2pgUcQApKCeuu-pzBrnbF7oxpYHtN8aqD5-UgNoxjR48qYnd6419g8ToABidjTd9f20NKbO__X8ADLgeX4</recordid><startdate>201212</startdate><enddate>201212</enddate><creator>Willson, Mary F.</creator><creator>Pendleton, Grey W.</creator><creator>Jones, J. 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| issn | 1051-1733 1938-5315 |
| language | eng |
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| source | Jstor Complete Legacy |
| subjects | Alaska Animal behavior Bears Black Bear Black bears Black Cottonwood Branches DNA damage Fire damage Foraging foraging behavior Modeling Populus trichocarpa Seed pods Seeds Tree trunks Trees Ursus americanus Wildlife damage management |
| title | Black Bear (Ursus americanus) Foraging on Black Cottonwood (Populus trichocarpa) Catkins in Southeast Alaska |
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