Document


Title

Response of southern Appalachian table mountain pine (Pinus pungens) and pitch pine (P. rigida) stands to prescribed burning
Document Type: Journal Article
Author(s): Nicole Turrill Welch; Thomas A. Waldrop; Edward R. Buckner
Publication Year: 2000

Cataloging Information

Keyword(s):
  • Acer
  • Acer rubrum
  • Appalachian Mountains
  • buds
  • competition
  • cover
  • distribution
  • disturbance
  • duff
  • fire exclusion
  • fire management
  • fire sensitive plants
  • fire suppression
  • forest management
  • Gaylussacia
  • hardwoods
  • herbaceous vegetation
  • human caused fires
  • Kalmia latifolia
  • light
  • lightning caused fires
  • litter
  • mineral soils
  • national forests
  • North Carolina
  • Nyssa sylvatica
  • openings
  • overstory
  • Oxydendrum arboreum
  • pine hardwood forests
  • Pinus pungens
  • Pinus rigida
  • Pinus strobus
  • pioneer species
  • population density
  • post fire recovery
  • Quercus
  • Quercus coccinea
  • Quercus prinus
  • regeneration
  • sassafras
  • Sassafras albidum
  • season of fire
  • seedlings
  • shrubs
  • species diversity (plants)
  • sprouting
  • succession
  • temperature
  • understory vegetation
  • US Forest Service
  • Vaccinium
  • vegetation surveys
  • Virginia
Region(s):
Record Maintained By:
Record Last Modified: December 23, 2020
FRAMES Record Number: 37841
Tall Timbers Record Number: 12362
TTRS Location Status: In-file
TTRS Call Number: Fire File
TTRS Abstract Status: Fair use, Okay, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.

Description

Southern Appalachian table mountain pine (Pinus pungens) and pitch pine (P. rigida) forests require disturbance for regeneration. Lightning-ignited fires and cultural burning practices provided the disturbance that prehistorically and historically maintained these forests. Burning essentially ceased on public lands in the early twentieth century when fire suppression became the primary fire management initiative of federal land managers. The last five to six decades of forest succession in the absence of fire have allowed chestnut oak (Quercus prinus), scarlet oak (Q. coccinea), and red maple (Acer rubrum) to dominate both midstory and understory strata and to become poised to invade table mountain pine and pitch pine canopies. This study examined first-year responses of three 60-80-year-old southern Appalachian table mountain pine and pitch pine stands to prescribed fire. Prior to burning, mean canopy (woody stems >2.5 cm DBH), understory (all shrubs and saplings <2.5 cm DBH), and ground layer (all vascular species <= 1 m in height) species richness values ranged 6-8 species/ 0.02 ha, 2-3 species/0.01 ha, and 1-3 species/m2, respectively. Mean pre-burn basal area ranged from 23 to 32 m2/ha for the three stands. Canopy and understory densities averaged 1500-1900 and 70-120 stems/ha, respectively. Mean pre-burn ground layer cover ranged from 28 to 77% per metre square. There were no pine seedlings present in the pre-burn ground layer. On all sites, burning top-killed some overstory and midstory fire-intolerant species such as sassafras (Sassafras albidum), red maple, and white pine (Pinus strobus). Numerous sprouts of these species appeared in the post-burn understory and ground layers. Canopy species richness was significantly lower (45%) whereas understory and ground layer species richness were significantly higher (two times pre-burn values) following most bums. All three bums significantly reduced canopy basal area (20-30%), canopy density (50-70%), and ground layer cover (40-70%) but increased understory density (two times pre-burn values). Table mountain pine (8000 seedlings/ha) and pitch pine regeneration (15 000 seedlings/ha) was observed following two of these burns but the seedlings were not likely to survive due to shading and competition from overstory, midstory, and understory strata. Future burns to restore similar stands must open the forest canopy, reduce accumulated litter and duff layers, and expose regenerative basal buds of hardwoods to lethal temperatures in order to lessen post-burn sprouting. Prescribed burns that do not accomplish these goals may further encourage succession towards hardwood-dominated stands as sprouts of understory hardwoods grow into rnidstory and overstory strata. © 2000 Elsevier Science B.V.

Online Link(s):
Citation:
Welch, N. T., T. A. Waldrop, and E. R. Buckner. 2000. Response of southern Appalachian table mountain pine (Pinus pungens) and pitch pine (P. rigida) stands to prescribed burning. Forest Ecology and Management 136(1-3):185-197.