Timothy E. Fulbright

Evaluation of Population Estimates of White-tailed Deer from Camera Survey

SEAFWA Journal Volume 1, March 2014

Use of trail cameras to make population estimates of white-tailed deer (Odocoileus virginianus) has increased since an estimator was developed by Jacobson et al. (1997). We evaluated the accuracy of the camera estimator in six 81-ha enclosures with varying densities of deer replicated on two study areas. Baited camera surveys were conducted for 14 days in autumn and winter. We also tested the finding from previous studies that the probability of sighting bucks and does in photographs was equal. Finally, we conducted an open range test by comparing a camera survey to a helicopter survey....

Year
2014

Does Supplemental Feeding of Deer Degrade Vegetation? A Literature Review

Artificially feeding deer is controversial, particularly in North America. Our objective was to determine if published literature supports the hypothesis that supplemental feeding of deer leads to overuse of palatable plants and vegetation degradation. We found 16 papers regarding the feeding of deer through a search of the literature since 1989. Recent studies have not provided conclusive evidence that supplemental feeding of deer enables herbivores to concentrate feeding on the most palatable native foods in their environment or that it results in degradation of vegetation within the...

Year
2012

Vegetation Response to Timing of Discing to Manage Northern Bobwhite Habitat in Texas

Discing is commonly recommended to improve northern bobwhite (Colinus virginianus) habitat. However, little information exists regarding optimal timing of discing or the duration of discing effects on semiarid rangelands. Our objectives were to evaluate vegetation response to autumn (October 2003), winter (January 2004), and spring (March 2004) discing in two ecoregions of Texas (Rio Grande Plains and Rolling Plains). Our study design was a completely randomized, two-factor (treatment and soil texture) factorial with repeated measures. We collected data on percent bare ground, forb...

Year
2009

Exotic Grass Impacts on Northern Bobwhite Habitat in South Texas

There is growing concern about the impacts that exotic grasses may have on northern bobwhite (Colinus virginianus) and other grassland birds. Large areas of South Texas have been seeded to or have been invaded by several species of exotic grasses including Guinea grass (Urochloa maxima), Bermuda grass (Cynodon dactylon), King Ranch bluestem (Bothriochloa ischaemum), Kleberg bluestem (Dichanthium annulatum), buffelgrass (Pennisetum ciliare), and Lehmann lovegrass (Eragrostis lehmanniana). Impacts of exotic grasses on northern bobwhite are largely unknown. While exotic grasses such as...

Year
2008