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    Author(s): Victoria J. Apsit; Rodney J. Dyer; Victoria L. Sork
    Date: 2002
    Source: In: Shifley, S. R.; Kabrick, J. M., eds. Proceedings of the Second Missouri Ozark Forest Ecosystem Project Symposium: Post-treatment Results of the Landscape Experiment. Gen. Tech. Rep. NC-227. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 212-226.
    Publication Series: Other
    Station: North Central Research Station
    PDF: View PDF  (445.08 KB)

    Description

    Contemporary gene flow is a major mechanism for the maintenance of genetic diversity. One component of gene flow is the mating system, which is a composite measure of selfing, mating with relatives, and outcrossing. Although both gene flow and mating patterns contribute to the ecological sustainability of populations, a focus of many forest management plans, these processes are often overlooked in forest management studies. As part of the Missouri Ozark Forest Ecosystem Project (MOFEP) we conducted a study of mating patterns in flowering dogwood (Cornus florida L), an insect-pollinated tree that is abundant and ubiquitous under story tree of upland Missouri Ozark forests. In 1998 and 1999, we collected fruit from over 200 Cornus florida individuals located in six compartments (MOFEP sites 1-6; ~250-500 ha each), which were subjected to one of three management treatments: even-aged, uneven-aged, and no harvest. To see whether the management treatments influenced tree density surrounding the study trees, we measured and compared tree density across treatments. Because differential germination could reflect either genetic or environmental factors affecting the mating system, we measured germination success on a per maternal tree basis.

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    Citation

    Apsit, Victoria J.; Dyer, Rodney J.; Sork, Victoria L. 2002. Patterns of mating in an insect-pollinated tree species in the Missouri Ozark Forest Ecosystem Project. In: Shifley, S. R.; Kabrick, J. M., eds. Proceedings of the Second Missouri Ozark Forest Ecosystem Project Symposium: Post-treatment Results of the Landscape Experiment. Gen. Tech. Rep. NC-227. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 212-226.

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