Characterization of an Old-growth Forest in the Cross Timbers of Oklahoma

A frontier shortleaf pine stand in the old-growth Cross Timbers of Oklahoma

We investigated an old-growth oak-shortleaf pine (Pinus echinata) stand of high ecological integrity in east-central Oklahoma located west of the continuous native distribution of shortleaf pine. With the exception of an abundance of shortleaf pine, the basal area (17.2 m/ha), density (559.6 trees/ha), and species composition of this unmanaged stand is similar to other old hardwood forests in t...

The Bioreserve Potential of the Ancient Cross Timbers on the Frank Tract, Osage County, Oklahoma

Structural Attributes of Two Old-Growth Cross Timbers Stands in Western Arkansas

—Comprised of largely non-commercial, xeric, oak-dominated forests, the Cross Timbers in Arkansas have been heavily altered over the last two centuries, and thus only scattered parcels of old-growth timber remain. We inventoried and mapped two such stands on Fort Chaffee Military Training Center in Sebastian County, Arkansas. The west-facing Christmas Knob site is located on an isolated hill, w...

Microsatellite primer development for post oak, Quercus stellata (Fagaceae)1

UNLABELLED PREMISE OF THE STUDY The American Cross Timbers forest ecosystem runs from southeastern Kansas to Central Texas and is primarily composed of post oak (Quercus stellata). This old-growth forest currently occupies only about 2% of its ancestral range. To facilitate genetic research on this species, we developed microsatellite primers specific to post oak from reduced genomic librari...

Composition and structure of a Fagus orientalis-dominated forest managed with shelterwood aim (A Case study in the Caspian forests, northern Iran)

Composition and structure of a three-storied Fagus orientalis-dominated forest was investigated in the Caspian forests, north of Iran. Circular sampling plots of 1000 m2 occupied by advance growth and natural regeneration were randomly chosen where the initial cuttings (with shelterwood aim) were performed. Abundance of species at different growth stages and quality of seedlings and saplings we...