Journal of the Southeastern Association of Fish and Wildlife Agencies

During the six years 1952 to 1957, a total of 13,269 waterfowl of three species (lesser scaup, redhead and canvasback) were banded in Maryland. From these, 1,125 band recoveries had been reported to June, 1958. Bands recovered through hunters (shot) made up the great majority of all reported, ranging from 91.9 percent of all recovered for lesser scaup to 96.5 percent for redheads. Waterfowl of the three species investigated were reported from 33 states, six Canadian provinces and the Bahamas. Some idea of the chronological order of migration was obtained by plotting band recovery reports by monthly and biweekly periods for the various states. The percentages of bands recovered for the three species were compared. Some apparent differences were noted in the first year recovery rates of adults and juveniles banded during the post-hunting season period.

Four experiments with 0.1 p.p.m. or less of 5 percent emulsified rotenone were conducted at Lake Beulah, Florida. Lake Beulah, an eighteen-acre lake with an average depth of 14.9 feet characteristically had a heavy plankton production. Estimated pounds of gizzard shad killed progressively declined during the four experiments although concentrations of rotenone were increased. The first kill was estimated at 23,455 pounds of shad; second kill, 7,976 pounds; third kill, 1,528 pounds; and fourth kill, 1,060 pounds. Small numbers of fish of other species were also killed. Length-frequency studies of gizzard shad indicated an over populated condition existed at the time of the first poisoning. Thereafter reproduction and rapid growth of this species occurred. Evidence exists that threadfin shad may have been eliminated from Lake Beulah following the use of the selective poisoning technique. Total kill calculations included results from bottom sample screens.

Preliminary Investigations Of Chemical Soil And Water Relationships And Lime Treatment Of Soft Water In Georgia Farm Ponds 0 By H. D. Zltllltr And A. B. Mon'l'go:mltry Georgia Game And Fish Commission Atlanta, Georgia Abstract A general classification of pond waters according to hydrogen ion and total hardness of calcium and magnesium is correlated with the major soil regions in the state. Specific correlation between Piedmont soils and Coastal Plain soils are apparent. Limited data is available on lime treatment of soft waters and relationships to fertilization programs. Pond bottom soil analysis before and after liming exhibit beneficial nutrient releases following treatment, and water concentrations of calcium and magnesium and hydrogen ion are presented before and after lime treatment. The efficiency of fertilization programs have been improved following lime treatment and amounts of fertilizer required for optimum results reduced.