1 / 27

Modelling badger migration using Distance Spatial Analysis Tools

Modelling badger migration using Distance Spatial Analysis Tools. a.k.a. The story of 2 lonesome badgers. Bert Meeus. Once upon a time. a forest. A peaceful forest!. But suddenly. A hungry bear!. Charlie is so lonely!. snif. Elsewhere at the same time. another forest. a forest.

sally
Download Presentation

Modelling badger migration using Distance Spatial Analysis Tools

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Modelling badger migration using Distance Spatial Analysis Tools a.k.a. The story of 2 lonesome badgers Bert Meeus

  2. Once upon a time... a forest

  3. A peaceful forest!

  4. But suddenly...

  5. A hungry bear!

  6. Charlie is so lonely! snif

  7. Elsewhere at the same time ... another forest a forest

  8. Another peaceful forest! I am so lonely! I‘m outta here!

  9. The question What is the chance that Winnie will find Charlie so they can have little baby badgers to repopulate Charlie's forest?

  10. Assumptions The chance on successful migration will depend on: • Distance between forests • Landscape in between forests • Random movements of badger Modelling through Distance Tools (Spatial Analyst)

  11. Full model Model 1 Model 2 Model 3

  12. Input: land cover map

  13. Model 1 Assumption: chance on successful migration will depend only on distance between forests It’s too far!!!

  14. Model 1 Euclidian distance between forests = 69231.156476 m

  15. Model 2 Assumptions: chance on successful migration will depend on: • Distance between forests • Landscape in between forests

  16. Model 2

  17. Model 2: Cost Distance

  18. Model 2: Cost Distance

  19. Model 2: Cost Path

  20. Model 2: Cost Path

  21. Model 3 Assumptions: chance on successful migration will depend on: • Distance between forests • Landscape in between forests • Random movements of badger

  22. Model 3

  23. Model 3: Corridor

  24. Model 3: Corridor + =

  25. Model 3: corridor Dark green: most likely path for badgers to move between forests Light green: alternative paths

  26. Model 3 Volume = 456016578860858.19 m³

  27. Conclusions Distance Tools of Spatial Analyst can be used to model animal migration! Problems: * Very slow for large images * How convert values for Euclidean Distance, Path Cost and Corridor Volume to migration chances?

More Related