Mark K. Johnson

Hunter Noncompliance with Bucks-only Regulations

About the same number of antlerless deer (Odocoileus virginianus) were harvested illegally as were harvested legally during bucks-only days on public land. A large percentage of hunters apparently shoot first and take only legally harvested deer to mandatory check stations. I estimated that 48.2% of hunters were predisposed to noncompliance with bucks-only regulations.

Year
1992

Relative Forage Preference by Cottontails for Ryegrass, Wheat and Subterranean Clover

On 2 sites in southeastern Louisiana, eastern cottontail (Sylvilagus floridanus) food preference was compared among ryegrass (Lolium multiflorum), winter wheat (Triticum aestivum), and subterranean clover (Trifolium subterraneum). Native forages comprised most of the winter diet. Fecal pellets contained more ryegrass than subterranean clover most months from December through May. Cottontails used little wheat, but this was probably due to poor production of this forage. Cottontail diet selection was not associated with total digestible nutrients, crude protein, phosphorus, calcium. We...

Year
1985

Effects of Supplemental Ryegrass Versus Subterranean Clover on Fawn Weight

White-tailed deer (Odocoileus virginianus) fawns were fed calf-creep feed (12% crude protein) ad libitum in pens where either ryegrass (Lolium multiflorum) or subterranean clover (Trifolium subterraneum) was planted for winter feed. During a 143-day period (29 Nov 1984-21 Mar 1985) fawns in the pen with ryegrass gained (x ± SE) 9.65 ± 2.4 kg/fawn while those in the pen with subterranean clover gained an average of 18.8 ± 2.5 kg/fawn. Differences were significant (P < 0.10) and were not influenced by sex. Use of calf creep feed per deer was not significantly different between the 2...

Year
1985

Dietary Phosphorus Requirements of Deer

For more than 25 years, numerous authors of reports and texts have repeatedly published that 0.56% and 0.25% phosphorus are optimum and minimum dietary levels required by white-tailed deer (Odocoileus virginianus). Scrutiny of the literature reveals that data do not sufficiently support these statements. Original statements were based on the performance of 1 deer. Dietary levels of other nutrients were also low. Minimum dietary levels of phosphorus required by deer are not known. Obviously, authors have cited these results without carefully reading the literature.

Year
1984

Controlling Beaver in the Gulf Coastal Plain

From December 1979 to May 1983, beaver (Castor canadensis) control trapping was conducted in 50 impoundments in the Gulf Coastal Plain of Alabama, Mississippi, and Louisiana. About 76% of impoundments contained beaver at some time within 3 years following initial heavy trapping. Age structure of beaver from impoundments trapped for 4 successive years did not differ significantly from that of the first year. Repopulation of drained impoundments appears to be enhanced by flooding. Many beaver problems are associated with manmade levees, railroads, and other roadbeds. Site-specific beaver...

Year
1984