ANALYZING DRIVERS FOR MOVEMENT OF GPS COLLARED AXIS DEER IN MAUI, HAWAII | |||
Wade H Naguwa; University of Hawaii at Manoa; naguwaw@hawaii.edu; Melissa R. Price, Derek R. Risch, John S. Medeiros, Lance K. Desilva, Scott Fretz | |||
Axis deer (Axis axis), native to the Indian subcontinent, have been introduced to regions throughout North and South America, Asia, and the Pacific as prized game mammals for hunting. However, beyond their native range, they pose a substantial threat to native flora, ecosystem health, and food security through prolific grazing and habitat degradation. Recent population growth in the Hawaiian Islands has increased public recognition of impacts to agricultural production and native ecosystems, but their population size and movement patterns remain largely unknown, hampering management responses. In this study we aimed to identify drivers that influence movement patterns and home range size utilizing 30 GPS collared deer. Preliminary results suggest movement patterns are correlated with rainfall and elevation while anthropogenic factors serve as major barriers to movement with limited dispersal between areas segmented by these features. Further, Axis deer had relatively small home ranges and dispersal events are largely associated with herds reaching carrying capacity. These results are consistent with movement patterns in their native range and suggest that targeted management aimed at isolating axis deer herds within controllable units may serve as an effective management tool to minimize both the economic and ecological impact of deer in the Hawaiian Islands. | |||
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