Implications of home-range estimation in the management of red-cockaded woodpeckers in South Carolina

摘要: Abstract I undertook a behavioral study to determine red-cockaded woodpecker ( Picoides borealis ) home-range size at the Savannah River Site, South Carolina, USA. In this location, because much of timber was harvested in late 1940s and early 1950s, available habitat largely consisted younger trees (e.g., less than 45 years old), not generally considered prime for species. From 1992 1995, observed seven groups woodpeckers year-round size. Most previous studies on species used minimum convex polygon approach estimate home range. compared fixed kernel estimation methods each group. found that method gave consistently smaller estimates range did polygon, result directly related methodologies techniques. Mean sizes 95% level were 56.9 ± 5.2 S.E. ha with versus 91.9 ± 11.7 S.E. ha polygon. Core area (50%) means 4.5 ± 0.5 S.E. ha 16.7 ± 2.4 S.E. ha It is recommended future use estimator rather as it gives more realistic appropriate depiction actually by birds within given estimating number may be accommodated particular area, mean well its shape need considered. Home-range Site similar those obtained elsewhere species’ Red-cockaded woodpeckers, spite prevalence relatively young forest structure, increase their compensate paucity older, mature pine habitat.