Skip to Main Content
Structural attributes of two old-growth Cross Timbers stands in western ArkansasAuthor(s): Don C. Bragg; David W. Stahle; K. Chris Cerny
Source: American Midland Naturalist 167(1):40-55
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
PDF: Download Publication (656.78 KB)
DescriptionComprised 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, while the southerly-facing Big Creek Narrows site is on a long, narrow rocky outcrop called Devil’s Backbone Ridge. These sites occupied rocky, south- to southwest-facing sandstone-dominated slopes, with primarily post oak (Quercus stellata) and blackjack oak (Q. marilandica) overstories. Post oak dominated the largest size classes at both sites. Increment cores indicated that some post oaks exceeded 200 y of age, and tree-ring dating also confirmed an uneven-aged structure to these stands. Both locations had irregular reverse-J shaped diameter distributions, with gaps, deficiencies, and excesses in larger size classes that often typify old-growth stands. On average, the post oaks at the Big Creek Narrows site were taller, larger in girth, and younger than those on the Christmas Knob site, suggestive of a better quality site at Big Creek. The application of neighborhood density functions on stem maps of both sites found random patterns in tree locations. These stands are very similar in their structure to old-growth examples in other parts of the Cross Timbers ecoregion.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationBragg, Don C.; Stahle, David W.; Cerny, K. Chris. 2012. Structural attributes of two old-growth Cross Timbers stands in western Arkansas. American Midland Naturalist 167(1):40-55.
KeywordsArkansas, Cross Timbers, oak, Quercus marilandica, Quercus stellata, uneven-aged structure, old growth
- Quercus stellata growth and stand characteristics in the Quercus stellata-Quercus marilandica forest type in the Cross Timbers region of Central Oklahoma
- Fire and human history of a barren-forest mosaic in Southern Indiana
- Oak decline in the Boston Mountains, Arkansas, USA: Spatial and temporal patterns under two fire regimes
XML: View XML