Theodor D. Leininger

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innovation process consists of three steps: research to produce an innovation, disseminating knowledge of the innovation outside of scientific circles, and implementation of the innovation within a user community. Presently, technology transfer (the dissemination step) is a participatory model of science delivery with a push–pull dynamic: scientists push(More)
Forest canopy and subcanopy data were collected from and compared among five disjunct bottomland hardwood forests in the Lower Mississippi Alluvial Valley, each with known occurrence of a population of the federally endangered shrub Lindera melissifolia. All study sites are cut-over forests, underlain by hydric soils, and have a seasonal high water table.(More)
Land-Use Patterns Before European settlement, forests covered much of the LMAV (National Research Council [NRC] 1992, Hefner and Brown 1985) although the exact extent of forests during this time is unknown because of the indeterminate role of American Indians and their clearing practices on the forest resource (Buckner 1989, Hamel and Buckner 1998, Fickle(More)
HAWKINS, T. S., N. M. SCHIFF, T. D. LEININGER, E. S. GARDINER, M. S. DEVALL, P. B. HAMEL, A. D. WILSON, AND K. F. CONNOR (USDA Forest Service, Southern Research Station, Stoneville, MS 38776). Growth and intraspecific competitive abilities of the dioecious Lindera melissifolia (Lauraceae) in varied flooding regimes. J. Torrey Bot. Soc. 136: 91–101.(More)
Passive management to preserve endangered plant species involves measures to avoid anthropogenic disturbance of natural populations, but this approach may not sustain plants that require disturbance-maintained habitats. Active management is often necessary to maintain existing habitats or provide new habitats for endangered species recovery. Our objective(More)
Bacterial wetwood is a major cause of value loss in the red oak lumber industry in the United States. Red oak trees in Mississippi, South Carolina, and Florida were sampled and evaluated for certain chemical properties possibly associated with the wetwood condition. Specific variables investigated were pH and concentmtions of methane, cations (Na+. Ca++,(More)
Oak decline poses a substantial threat to forest health in the Ozark Highlands of northern Arkansas and southern Missouri, where coupled with diseases and insect infestations, it has damaged large tracts of forest lands. Forest Health Monitoring (FHM) crown health indicators (e.g. crown dieback, etc.), collected by the U.S. Forest Service’s Forest Inventory(More)
Wetwood, or bacterially infected wood, is a severe processing problem and causes serious drying defects in lumber. The detection of wetwood is, therefore, important for proper processing and quality wood products. An investigation has been carried out to detect wetwood of cherrybark oak (Quercus pagoda Raf.), water oak (Quercus nigra, L.), hickory (Carya(More)
The relationship between silvicultural practices, e.g. thinning, and pest organisms (insects and diseases) has been investigated extensively in pine species but to a lesser degree in hardwoods. Of critical interest is the potential negative impact to the residual stand resulting from insect damage and diseases that develop as a consequence of silvicultural(More)
Red oak (Quercus section Labatae)-sweetgum (Liquidambar styraciflua L.) stands growing on mid-south bottomland sites in the United States are well known for producing high-quality grade hardwood logs, but models for estimating the quantity and quality of standing grade wood in these stands have been unavailable. Prediction models to estimate total(More)