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    Author(s): Rainbow DeSilva; Richard S. Dodd
    Date: 2017
    Source: Gen. Tech. Rep. PSW-GTR-258. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 241-243
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (133.0 KB)

    Description

    During this century, climate warming and altered precipitation patterns will lead to habitat changes that may be beneficial to some long-lived tree species and detrimental to others. Paleoendemics, with limited and disjunct distributions will face the greatest challenges, as migration rates will be too slow to keep pace with rapid environmental change and populations at the receding edges are eroded through mal-adaption. Giant sequoia (Sequoiadendron giganteum (Lindl.) Buchholz) is an iconic Sierra Nevada tree species with populations that tend to be small and highly fragmented (particularly in the northern range), making them especially vulnerable to environmental change. Maintenance of genetic variation is an important determinant of population persistence that, in part, depends on gene flow within and between populations. The research presented here describes: 1) the distribution of genetic diversity among population pairs distributed across the range of giant sequoia, and 2) the effective rates of gene flow across a highly fragmented habitat.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    DeSilva, Rainbow; Dodd, Richard S. 2017. Variation in genetic structure and gene flow across the range of Sequoiadendron giganteum (giant sequoia). In: Standiford, Richard B.; Valachovic, Yana, tech cords. Coast redwood science symposium—2016: Past successes and future direction. Proceedings of a workshop. Gen. Tech. Rep. PSW-GTR-258. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 241-243.

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https://www.fs.usda.gov/treesearch/pubs/55433