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dc.contributor.author Abe, Tetsuto en_US
dc.contributor.author Umeno, Hiromi en_US
dc.date.accessioned 2012-07-11T20:14:48Z en_US
dc.date.available 2012-07-11T20:14:48Z en_US
dc.date.issued 2011-01 en_US
dc.identifier.citation Abe T, Umeno H. Pattern of Twig Cutting by Introduced Rats in Insular Cloud Forests. Pac Sci 65(1): 27-40. en_US
dc.identifier.issn 0030-8870 en_US
dc.identifier.uri http://hdl.handle.net/10125/23208 en_US
dc.description v. ill. 23 cm. en_US
dc.description Quarterly en_US
dc.description.abstract We examined seasonal patterns of twig cutting by the introduced black rat, Rattus rattus, on Haha-jima Island, an island in the Ogasawara (Bonin) group of Japan. Censuses were conducted along seven routes to count the number of trees damaged by twig cutting in each month. Overall, 42.6% (23/54 species) of woody species were damaged. Twig cutting was greatest in spring (March–May). Probability of damage by twig cutting was not correlated with species frequency in the vegetation. This suggests that twig cutting is associated with particular characteristics of target species. Endemic plants experienced a significantly higher probability of twig cutting than alien plants. This may be due to an evolutionary loss of plant defense mechanisms in the absence of herbivorous mammals. Because the overall proportion of individuals damaged by twig cutting was not high, the behavior is unlikely to influence the population dynamics of trees and cause vegetation change. But intense twig cutting was also found on critically endangered plants, so twig cutting by black rats could be a threat to those species. en_US
dc.format.extent 14 p. en_US
dc.language.iso en-US en_US
dc.publisher Honolulu, University of Hawaii en_US
dc.relation.ispartofseries vol. 65, no. 1 en_US
dc.subject.lcsh Natural history--Periodicals. en_US
dc.subject.lcsh Science--Periodicals en_US
dc.subject.lcsh Natural history--Pacific Area--Periodicals. en_US
dc.title Pattern of Twig Cutting by Introduced Rats in Insular Cloud Forests. en_US
dc.type Article en_US
dc.type.dcmi Text en_US

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