Tara L. Keyser

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Two determinants of crown fire hazard are canopy bulk density (CBD) and canopy base height (CBH). The Fire and Fuels Extension to the Forest Vegetation Simulator (FFE-FVS) is a model that predicts CBD and CBH. Currently, FFE-FVS accounts for neither geographic variation in tree allometries nor the nonuniform distribution of crown mass when one is estimating(More)
Models that quantify the probability of stump sprouting P(s) and sprout characteristics for predominant tree species in the southern Appalachian Mountains, USA are lacking. In this study, 375 plots (0.01 ha) were installed across five stands in eastern Tennessee and western North Carolina. Trees ≥3.8 cm diameter at 1.37 m above groundline (dbh) were tagged,(More)
Regenerating oaks (Quercus spp.) has remained a widespread and persistent problem throughout their natural range. Research shows that abundant oak advance reproduction is crucial for success. Although it is recognized that oak advance reproduction accumulation is inversely related to site quality, there has been little effort to model oak advance(More)
We i:valuated changes in forc:;.t ~tructure related to fire :-.everity after a wildfire in pondero ... a pini: forests of the Black Hills, South Dakota. where 2S <J{: burned at low, -lX t;,'r at moderate, and 27 / ( at high severity. We compared trec mortality, fine (FWD) and CO;Jrsc woody debris (C\VD) and tree regeneration in areas burned under different(More)
Citation for proceedings: Holley, A. Gordon; Connor, Kristina F.; Haywood, James D., eds. 2015. Proceedings of the 17th biennial southern silvicultural research conference. e–Gen. Tech. Rep. SRS–203. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 551 p. Research Forester, USDA Forest Service, Southern Research(More)
Trembling aspen (Populus tremuloides Michx.) regeneration dynamics including sprout production, growth, and clone size were measured to determine the effects of fire on small aspen clone persistence following a mixedseverity wildfire in the Black Hills, South Dakota. Four years postfire, 10 small, isolated aspen clones per low and high fire severity classes(More)
Much about stump sprout dynamics of upland hardwood trees species has been obtained in clearcuts. Information on the response of stump sprouts to alternative silvicultural treatments, including treatments that manipulate stand density and stand structure is lacking. In this study we examined the influence of harvest season and levels of basal area reduction(More)
3 Corresponding author: kgreenberg@fs.fed.us; +1-828-667-5261 ext. 102 ABSTRACT: The sustainability of eastern oak-dominated forests is threatened by high oak mortality rates and widespread oak regeneration failure, and presents a challenge to natural area managers. We tracked the rate and cause of mortality of 287 mature oak trees of five species for 15(More)
numerous studies have documented a temporary decrease in growth following prescribed burning (e.g., Landsberg et al. 1984, Grier 1989, Sutherland et al. 1991, Peterson et al. 1994, Busse et al. 2000), whereas other studies have reported a positive growth response in ponderosa pine (Wyant et al. 1983, Skov et al. 2005), giant sequoia (Mutch and Swetnam(More)