Genetic Diversity and Low Reproductive Success in Isolated Populations of Utah Juniper (Juniperus Osteosperma, Cupressaceae)

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Permanent URL	http://hdl.lib.byu.edu/1877/2669
Title	Genetic Diversity and Low Reproductive Success in Isolated Populations of Utah Juniper (Juniperus Osteosperma, Cupressaceae)
BYU Creator	Allphin, Loreen Anderson, Val J. Hunt, Amy F.
Keywords	genetic variability; inbreeding; Juniperus osteosperma; reproductive isolation; seed abortion; seed set; Utah juniper
Description/Abstract	Utah juniper (Juniperus osteosperma) has greatly expanded its historical range in the western United States. Management plans for the species have focused on curtailing its encroachment into sagebrush and grassland communities. These plans often include burning or other methods of elimination. These methods may result in subdivision or fragmentation of existing juniper stands. We initiated a study at Dugway Proving Ground, a U.S. Army facility, to examine the effects of fragmentation on the reproductive success of Utah juniper in isolated populations. We used enzyme electrophoresis to quantify genetic variability in isolated populations. We also determined population reproductive success by examining juniper fruits for evidence of seed abortion and/or presence of insect parasites. We compared reproductive and genetic variability in isolated populations at Dugway to 2 nonisolated and encroaching Utah juniper populations. The Dugway populations exhibited reduced seed set due to high seed abortion and/or insect seed parasitism, and a loss of genetic variability in comparison to the nonisolated populations. Additionally, there was a significant correlation between reproductive success and genetic variability.
Source	L. Allphin, A.F. Hunt and V.J. Anderson. "Genetic diversity and low reproductive success in isolated populations of Utah juniper (Juniperous osteosperma, Cupressaceae)." Western North American Natrualist. 67.3 (2007): 323-337.;
Publisher	Bean Museum - BYU
Date Original	2007
Date Digital	2010-11-30
Language	English eng en
Publication Type	Articles
Type	Text
Format	application/pdf
Owning Institution	Brigham Young University
BYU College	College of Life Sciences
BYU Department	Plant and Wildlife Sciences
Copyright Status	(c) 2007 Brigham Young University Bean Museum.;
Copyright Use Information	http://www.lib.byu.edu/generic_copyright.html

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Genetic Diversity and Low Reproductive Success in Isolated Populations of Utah Juniper (Juniperus Osteosperma, Cupressaceae)

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