Table 1 Abbreviation, method of calculation, and definition or purpose for interpretation for the spatial measurements collected from 24 Christmas Island flying-foxes (Pteropus natalis) fitted and tracked with GPS telemetry nodes between August 2015 and November 2017
Measurement | Abbreviation | Calculation | Definition or purpose |
|---|---|---|---|
Foraging range | FR | 95% utilization distributions (UD) | The total area traversed by an individual as it searches for food and feeds, as well as movements between day roosts and foraging sites |
Foraging area | FA | 30% intensity distributions (ID) | Identify and quantify the number of intensively and/or repeatedly used foraging areas within the foraging range |
Long axis across the foraging range | LAX | Distance between the furthest two GPS fixes across all nights | The scale of movements during the entire tracking period |
Total nightly foraging dispersal distance | Nightly dispersal | Distance between the furthest two GPS fixes within a night | The scale of movements during a single night |
Distance from roost to foraging areas | Roost to FA | Distance between the roost site and each nightly used foraging area | The scale of movements individuals travel from the roost site in search of food |
Distance between foraging areas | Between FA | Distance between each nightly used foraging area | The scale of movements individuals travels between foraging areas in search of food |