Diversity in Tree Species in Oklahoma Upland Forests
1971
Risser, Paul G. | Rice, Elroy L.
Tree—species diversity was measured in 61 Oklahoma upland forest stands. Most stands were dominated by Quercus stellata and Quercus marilandica, but the stands with the greatest diversity were those dominated by other species. There was an inverse relation of dominance concentration (Simpson and McNaughton indexes) to species diversity and the Shannon—Wiener index. The Shannon—Wiener index was positively related to stand basal area and inversely related to stand density. Diversity decreased and concentration of dominance increased along the precipitation gradient from seat to west. Species diversity of Oklahoma forests is generally low to medium compared to southern Appalachian forests.
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