Forest Patch Occupancy by Sumatran Hornbills in a Fragmented Landscape of Southern Sumatra, Indonesia
FOREST PATCH OCCUPANCY BY SUMATRAN HORNBILLS IN A FRAGMENTED LANDSCAPE OF SOUTHERN SUMATRA, INDONESIA by YOK YOK HADIPRAKARSA (Under the Direction of JOHN P. CARROLL AND ROBERT J. COOPER) ABSTRACT Understanding habitat requirements for Sumatran hornbills at broad-scales are required for future conservation and management. I identified habitat relationships and resource selection among forest patches, the probability of forest patches being occupied by hornbills, and developed spatially explicit habitat model (SEHM) to predict probability of Sumatran hornbill occurrence at broad scale. With the combination of stochastic events and habitat loss, small- bodied territorial species groups may face extirpation in the future due to dispersal limitation. Large-bodied non-territorial species had a better probability to persist in fragmented landscapes. Application of spatially explicit modeling has great potential to fill a knowledge gap for hornbill conservation priorities at broad scales. Evaluating efficiency of conservation research and management are recommended for future hornbill studies. Maintaining remnant forest patches in proximity to large neighborhood forest complexes is imperative for future hornbill persistence. INDEX WORDS: AIC, Anorrhinus galeritus, Antracocceros albirostris, Antracocceros malayanus, Aceros corrugatus, Berenicornis comatus, Buceros rhinoceros, Buceros bicornis, Distribution, Forest fragmentation, Hornbill conservation, Indonesia, Logistic regression, Occupancy estimates, Patch occupancy, Sumatran hornbills, Sumatra,
[Show full text]