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Establishment of Jeffrey Pine Seedlings from Animal Caches

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Jeffrey pine (Pinus jeffreyi) seeds have large wings and are effectively dispersed by wind, but 37% of the seedling emergence sites in spring 1989 in the Sierra Nevada of western Nevada consisted of tight clumps of seedlings. By fall 1989, 41% of all emergence sites where seedlings survived had resulted from what were originally clumps of seedlings. As Jeffrey pines aged, clumps became smaller, and the frequency of clumps decreased. These seedling clumps and many single seedlings emerged from the scattered caches of seed-hoarding rodents and corvids, and the activities of these animals in the study area were sufficient to account for most of the Jeffrey pine seedling establishment observed. Cached seeds may gain important advantages over uncached seeds in the semiarid habitat occupied by this pine. West. J. Appl. For. 7(1):14-20
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Document Type: Journal Article

Affiliations: Department of Biology, University of Nevado-Reno, Reno, Nevada 89557

Publication date: 1992-01-01

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