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Does Plan B work? Home range estimations from stored on board and transmitted data sets produced by GPS-telemetry in the Colombian Amazon.

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  • Author(s): Cabrera JA; Molina E; González T; Armenteras D
  • Source:
    Revista de biologia tropical [Rev Biol Trop] 2016 Dec; Vol. 64 (4), pp. 1441-50.
  • Publication Type:
    Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Univ. de Costa Rica Country of Publication: Costa Rica NLM ID: 0404267 Publication Model: Print Cited Medium: Print ISSN: 0034-7744 (Print) Linking ISSN: 00347744 NLM ISO Abbreviation: Rev Biol Trop Subsets: MEDLINE
    • Publication Information:
      Original Publication: San José, Univ. de Costa Rica.
    • Subject Terms:
      Homing Behavior* ; Perissodactyla*; Geographic Information Systems/*instrumentation ; Satellite Communications/*instrumentation ; Telemetry/*instrumentation ; Telemetry/*methods; Animal Distribution ; Animals ; Colombia ; Datasets as Topic ; Female ; Iridium ; Male ; Reproducibility of Results ; Sex Factors ; Time Factors
    • Abstract:
      Telemetry based on Global Positioning Systems (GPS) makes possible to gather large quantities of information in a very fine scale and work with species that were impossible to study in the past. When working with GPS telemetry, the option of storing data on board could be more desirable than the sole satellite transmitted data, due to the increase in the amount of locations available for analysis. Nonetheless, the uncertainty in the retrieving of the collar unit makes satellite-transmitted technologies something to take into account. Therefore, differences between store-on-board (SoB) and satellite-transmitted (IT) data sets need to be considered. Differences between SoB and IT data collected from two lowland tapirs (Tapirus terrestris), were explored by means of the calculation of home range areas by three different methods: the Minimum Convex Polygon (MCP), the Fixed Kernel Density Estimator (KDE) and the Brownian Bridges (BB). Results showed that SoB and IT data sets for the same individual were similar, with fix ranging from 63 % to 85 % respectively, and 16 m to 17 m horizontal errors. Depending on the total number of locations available for each individual, the home ranges estimated showed differences between 2.7 % and 79.3 %, for the 50 % probability contour and between 9.9 % and 61.8 % for the 95 % probability contour. These differences imply variations in the spatial coincidence of the estimated home ranges. We concluded that the use of IT data is not a good option for the estimation of home range areas if the collar settings have not been designed specifically for this use. Nonetheless, geographical representations of the IT based estimators could be of great help to identify areas of use, besides its assistance to locate the collar for its retrieval at the end of the field season and as a proximate backup when collars disappear.
    • Accession Number:
      44448S9773 (Iridium)
    • Publication Date:
      Date Created: 20180222 Date Completed: 20180417 Latest Revision: 20191113
    • Publication Date:
      20240105
    • Accession Number:
      10.15517/rbt.v64i4.22176
    • Accession Number:
      29465908