Colloquium

A Spatial Temporal Analysis Method to Detect Brown Bear (Ursus Arctos), Home Range Change In Dalarna, Sweden

Organisator Laboratory of Geo-information Science and Remote Sensing
Datum

di 28 april 2015 09:00 tot 09:30

Locatie Lumen, building number 100
Droevendaalsesteeg 3a
100
6708 PB Wageningen
+31 317 481 700
Zaal/kamer 2

by Boris Kooij

Abstract

In 1984 the Scandinavian Brown Bear Research Project (SBBRP) was founded with as main goal to document the basic ecology of Scandinavian brown bear. This is done by tracking brown bears. This is done by tracking brown bears using radio and GPS equipment. During this thesis, this tracking data is used to detect change in the home ranges of brown bear over a longer period of time (more than 2 years). Several characteristics (size, shape, overlap and movement) of the home ranges of the tracked bears, created using different methods (MCP, KDE and BB), are calculated to detect the change of the home ranges. Demographic characteristics (sex, age and sub-status) of the bears as well as the takeover of the home ranges of dead bears are used to explain the detected home range changes. We showed during this thesis that it is possible to observe change in the home ranges of brown bears by spatially and temporally analysing high density GPS tracking data, but that more sensitivity analysis should be done to improve the results.

Keywords: SBBRP; R; Home range takeover; Brown Bear; Ursus Arctos; Home range change; MCP; KDE; Brownian Bridge; GPS Trajectories