Observation resolution critically influences movement-based foraging indices.

ABSTRACT: Movement-based indices such as moves per minute (MPM) and proportion time moving (PTM) are common methodologies to quantify foraging behavior. Hundreds of studies have reported these indices, many without specifying the temporal resolution of their original data, and others using varying resolutions. This was done despite the likelihood that observation resolution can affect MPM and PTM estimates. Our goal was to empirically determine the sensitivity of these foraging indices to changes in the temporal resolution of the observation. We used a high-speed camera to record movement sequences of 20 Acanthodactylus boskianus lizards. Then, we gradually decreased the resolution of the data and calculated the foraging indices at different temporal resolutions. When considering the range of tempor

SUBMITTER: Kalyuzhny M 

PROVIDER: S-EPMC6754423 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature