Robert E. Trost

License plates were used as markers for capture-recapture estimates of vehicle numbers on a 12,547-ha study area. License plate numbers were recorded during random surveys. An attempt to estimate vehicle numbers, using open-population model JOLLY, failed due to problems with equal catchability caused by users leaving the area, then returning. Chapman's Lincoln-Peterson index provided acceptable estimates of vehicle numbers. Numbers of vehicles were calculated for each sample day, then extrapolated to the entire study period. Average number of people per vehicle, area of use, and use...

State and federal personnel banded 4,960 Canada geese (Branta canadensis) in North Carolina and 11,522 in Maryland from 1963-1974. Adult survival for Maryland geese was estimated as 81.96% (SE = 0.88%) and for North Carolina geese as 79.23% (SE = 0.96%) indicating that geese banded in Maryland had a higher average annual survival rate (P < 0.01). Recovery rates also indicated Canada geese from North Carolina (3.01 %, SE = 0.16%) may have had higher rates of harvest compared to Maryland (2.39%, SE = 0.10%) (P < 0.001). Model simulations indicated that estimated differences in survival...

We banded 1,987 Canada geese (Branta canadensis) at Ballard Wildlife Management Area (WMA), Kentucky 1974 - 81. Additionally we observed 1,459 neckbanded individuals at Ballard WMA 1977 - 81 and obtained 11,649 observations of these individuals in the Mississippi Flyway. Analysis of these observations and 195 hunting recoveries indicated a strong association between Ballard WMA and Wisconsin. Average annual survival was estimated as 72% for geese banded at Ballard WMA 1974 - 79. Of 783 movements between refuges in southern Illinois and Ballard WMA, 73% were movements into Kentucky. Sixty...

Personnel of 6 National Wildlife Refuges in Arkansas, Mississippi, and Tennessee captured and neckbanded 1,462 Canada Geese (Branta canadensis) in 1977-80. Of these, 728 individuals were observed 1,430 times in the Mississippi Flyway. These observations and 44 hunting recoveries indicated that geese from the 6 refuges had varying degrees of association with both the Mississippi Valley Population and the Eastern Prairie Population. Geese banded at White River refuge tended to show greater affiliation with the Eastern Prairie Population than did geese banded at 3 other refuges.