A comparison of home range estimates using the time local convex hull (T-LoCoH) and minimum convex polygon (MCP) methods for African savannah elephants in a semi-arid protected area

Abstract

Knowledge of home ranges (HRs) helps conservationists understand movement patterns and can aid management including avoidance of human-wildlife conflicts. This study examined the African savannah elephant seasonal HRs and space use using telemetry data in Mana Pools National Park, Zimbabwe. The objectives were to (i) compare the HR sizes and (ii) construct utilization distribution of African savannah elephants using the minimum convex polygon (MCP) method and the time-local convex hull (T-LoCoH). The results revealed that the dry, transitional, and wet season HR sizes estimated by the MCP method were significantly larger than those of the T-LoCoH method. Significant differences were observed between core T-LoCoH home-range distributions for the wet, transition, and dry seasons. T-LoCoH more accurately represented the HR size and nuances of repeated movements and internal spaces than the MCP method. The findings show larger-scale movements in the transition season, which would enhance the potential for human–elephant conflicts.

Keywords

home range / Mana Pools National Park / minimum convex polygon / time-local convex hull / utilization distribution

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2024 The Author(s). Wildlife Letters published by Northeast Forestry University and John Wiley & Sons Australia, Ltd.