You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Peroxidase Allozyme Differentiation among Successional Stands of Ponderosa Pine
Joseph S. Beckman and Jeffry B. Mitton
The American Midland Naturalist
Vol. 112, No. 1 (Jul., 1984), pp. 43-49
Published by: The University of Notre Dame
Stable URL: http://www.jstor.org/stable/2425455
Page Count: 7
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Genetic variation of a peroxidase locus from mature ponderosa pine needles has been surveyed among four successional stands on the Shanahan Mesa near Boulder, Colorado. The recent colonization of this mesa by ponderosa pine can be documented by historical reports and tree cores. Allozyme differentiation was observed on the Shanahan Mesa between two recently colonized, open-grown stands and a shaded secondary growth stand, which parallels patterns of differentiation found in nearby mountain populations. At a transitional stand in the middle of the mesa, genetic differences also occurred between older open-grown trees and shaded younger trees. Environmental effects from canopy closure appear to have affected peroxidase differentiation among these successional stands.
The American Midland Naturalist © 1984 The University of Notre Dame