CWT-LTER Data Set Summary

Accession: 4025 CWT Research Theme: Disturbance and Land Use
Contributor: Barton D. Clinton
Title: Post-burn study of herbaceous understory plots at Jacobs Branch and Devils Den burn sites, 1992
Abstract: Establishment and maintenance of pitch pine/hardwood ecosystems in the southern Appalachians depends on intense wildfire. These ecosystems typically have a substantial evergreen shrub component (Kalmia latifolia) which limits regeneration of future overstory species. Wildfires provide microsite conditions conducive to pine regeneration and reduce Kalmia competition. Recent droughts in the region have resulted in significant acreages of southern pine beetle killed pine/hardwood stands. Site conditions are amenable to the high intensity fires needed to regenerate pine; however, fire suppression limits the role of wildfire in these ecosystems. Research shows that pines will not regenerate in the absence of severe disturbance, such as a high intensity fire, and mixed pine/hardwood ecosystem will not be maintained. On three sites in the southern Appalachians, stands characterized by sparse overstories and dense Kalmia latifolia L. shrub layers were felled in early summer and burned in early fall. Amounts of aboveground vegetation and forest floor mass, nitrogen (N), and carbon (C) were measured before and after treatment by sampling wood, foliage, herbs, grasses, and forest floor (Oi and Oe + Oa layers). This data set constitutes the post-burn study of herbaceous understory plots at Jacobs Branch and Devil's Den burn sites, 1992.
Key Words: cover, Coweeta Hydrologic Laboratory, Coweeta LTER, CWT, density, ecosystem response, fell and burn, fire, forest ecology, forest structure and function, forest succession, herbaceous, Man and the Biosphere Program, North Carolina, Otto, pine restoration, plant ecology, prescribed burning, regeneration, site preparation, Southern Appalachian Forest Ecosystems Project, southern Appalachians, uneven sampling interval, USDA Forest Service
LTER Core Area: Disturbance Patterns
CWT Themes: Disturbance and Land Use, Plant Ecology
Study Type: Coweeta Terrestrial Gradient Project
Study Period: 01-Jan-1992 to 30-Dec-1992
Site References:
ULTRB -- Upper Little Tennessee River Basin, North Carolina, USA
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Data Table: 4025 (Main data table for data set 4025, 900)

Access: Public (released 01-Feb-2004)

Metadata: Text (ESA FLED), Basic EML, Complete EML

Data Formats: Spreadsheet CSV Text Format, EML-described Text Format, Tab-delimited Text Report with Statistical Summary, GCE Data Toolbox Format, Standard MATLAB Variables Format

Column List:

Column Name Units Type Description (hide)
1 Site none integer Numeric sampling site code
2 Treatment none integer Numeric treatment code
3 Sampling_site_treatment_code none alphanumeric string Alphabetical sampling site and treatment code
4 Plot none integer Plot number
5 Subplot_number none integer Subplot number
6 Species none alphanumeric string Herbaceous vegetation species name
7 Density none floating-point Number of species found per one meter square plot
8 Herbaceous_cover % floating-point Percent of plot covered with herbaceous species