Randomized shortest paths for Grizzly Bear dispersal between the GYE and NCDE
The Randomized Shortest Path (RSP) raster delineates potential dispersal paths for male-mediated gene flow between grizzly bear (Ursus arctos) populations in the Greater Yellowstone Ecosystem (GYE) and the Northern Continental Divide Ecosystem (NCDE). A RSP algorithm was used to estimate the average...
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2017
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dataone:90119b9a-ec14-4990-bf28-788e73b293c5 2023-11-08T14:15:00+01:00 Randomized shortest paths for Grizzly Bear dispersal between the GYE and NCDE Christopher P. Peck Frank T. van Manen Cecily M. Costello Mark A. Haroldson Lisa A. Landenburger Lori L. Roberts Daniel D. Bjornlie Richard D. Mace Geographic extent includes portions of Montana, Idaho, and Wyoming extending from the Canadian border to the north to Yellowstone National Park to the south. ENVELOPE(-117.1451,-106.69583,49.110065,41.45115) BEGINDATE: 2000-05-01T00:00:00Z ENDDATE: 2015-10-31T00:00:00Z 2017-01-01T00:00:00Z https://search.dataone.org/view/90119b9a-ec14-4990-bf28-788e73b293c5 unknown USGS Science Data Catalog grizzly bear dispersal connectivity movement corridor random shortest path step-selection model Yellowstone Ecosytem Northern Continental Divide Ecosystem biota bears ecology Grizzly Bears Glacier National Park Montana Idaho Wyoming Yellowstone Ursus Ursus arctos Dataset 2017 dataone:urn:node:USGS_SDC 2023-11-08T13:40:43Z The Randomized Shortest Path (RSP) raster delineates potential dispersal paths for male-mediated gene flow between grizzly bear (Ursus arctos) populations in the Greater Yellowstone Ecosystem (GYE) and the Northern Continental Divide Ecosystem (NCDE). A RSP algorithm was used to estimate the average number of net passages for all grid cells at a spatial resolution of 300 m in the study region which spans parts of Montana, Idaho, and Wyoming. RSP rasters identify potential movement paths for 3 levels of random deviation determined by the parameter Θ (i.e., Θ = 0.01, 0.001, and 0.0001) for bears moving from an origin to a destination node. Lower values of Θ result in greater exploration and more random deviation around the shortest path (Θ = 0 equivalent to pure random walk), whereas larger values approach the equivalent of a least-cost path. Broad-scale concordance between model predictions was found for paths originating in the NCDE and those originating in the GYE for all 3 levels of movement exploration. The resulting RSP rasters provide evidence that landscape features concentrate movement paths into corridors (e.g., because of anthropogenic influence), and delineate paths that typically follow neighboring mountain ranges. Movement paths that converge at junctions between several ranges may serve as pivotal stepping stones for grizzly bear movement and successful dispersal. Dataset Ursus arctos Stepping Stones USGS Science Data Catalog (via DataONE) Stepping Stones ENVELOPE(-63.992,-63.992,-64.786,-64.786) ENVELOPE(-117.1451,-106.69583,49.110065,41.45115) |
institution |
Open Polar |
collection |
USGS Science Data Catalog (via DataONE) |
op_collection_id |
dataone:urn:node:USGS_SDC |
language |
unknown |
topic |
grizzly bear dispersal connectivity movement corridor random shortest path step-selection model Yellowstone Ecosytem Northern Continental Divide Ecosystem biota bears ecology Grizzly Bears Glacier National Park Montana Idaho Wyoming Yellowstone Ursus Ursus arctos |
spellingShingle |
grizzly bear dispersal connectivity movement corridor random shortest path step-selection model Yellowstone Ecosytem Northern Continental Divide Ecosystem biota bears ecology Grizzly Bears Glacier National Park Montana Idaho Wyoming Yellowstone Ursus Ursus arctos Christopher P. Peck Frank T. van Manen Cecily M. Costello Mark A. Haroldson Lisa A. Landenburger Lori L. Roberts Daniel D. Bjornlie Richard D. Mace Randomized shortest paths for Grizzly Bear dispersal between the GYE and NCDE |
topic_facet |
grizzly bear dispersal connectivity movement corridor random shortest path step-selection model Yellowstone Ecosytem Northern Continental Divide Ecosystem biota bears ecology Grizzly Bears Glacier National Park Montana Idaho Wyoming Yellowstone Ursus Ursus arctos |
description |
The Randomized Shortest Path (RSP) raster delineates potential dispersal paths for male-mediated gene flow between grizzly bear (Ursus arctos) populations in the Greater Yellowstone Ecosystem (GYE) and the Northern Continental Divide Ecosystem (NCDE). A RSP algorithm was used to estimate the average number of net passages for all grid cells at a spatial resolution of 300 m in the study region which spans parts of Montana, Idaho, and Wyoming. RSP rasters identify potential movement paths for 3 levels of random deviation determined by the parameter Θ (i.e., Θ = 0.01, 0.001, and 0.0001) for bears moving from an origin to a destination node. Lower values of Θ result in greater exploration and more random deviation around the shortest path (Θ = 0 equivalent to pure random walk), whereas larger values approach the equivalent of a least-cost path. Broad-scale concordance between model predictions was found for paths originating in the NCDE and those originating in the GYE for all 3 levels of movement exploration. The resulting RSP rasters provide evidence that landscape features concentrate movement paths into corridors (e.g., because of anthropogenic influence), and delineate paths that typically follow neighboring mountain ranges. Movement paths that converge at junctions between several ranges may serve as pivotal stepping stones for grizzly bear movement and successful dispersal. |
format |
Dataset |
author |
Christopher P. Peck Frank T. van Manen Cecily M. Costello Mark A. Haroldson Lisa A. Landenburger Lori L. Roberts Daniel D. Bjornlie Richard D. Mace |
author_facet |
Christopher P. Peck Frank T. van Manen Cecily M. Costello Mark A. Haroldson Lisa A. Landenburger Lori L. Roberts Daniel D. Bjornlie Richard D. Mace |
author_sort |
Christopher P. Peck |
title |
Randomized shortest paths for Grizzly Bear dispersal between the GYE and NCDE |
title_short |
Randomized shortest paths for Grizzly Bear dispersal between the GYE and NCDE |
title_full |
Randomized shortest paths for Grizzly Bear dispersal between the GYE and NCDE |
title_fullStr |
Randomized shortest paths for Grizzly Bear dispersal between the GYE and NCDE |
title_full_unstemmed |
Randomized shortest paths for Grizzly Bear dispersal between the GYE and NCDE |
title_sort |
randomized shortest paths for grizzly bear dispersal between the gye and ncde |
publisher |
USGS Science Data Catalog |
publishDate |
2017 |
url |
https://search.dataone.org/view/90119b9a-ec14-4990-bf28-788e73b293c5 |
op_coverage |
Geographic extent includes portions of Montana, Idaho, and Wyoming extending from the Canadian border to the north to Yellowstone National Park to the south. ENVELOPE(-117.1451,-106.69583,49.110065,41.45115) BEGINDATE: 2000-05-01T00:00:00Z ENDDATE: 2015-10-31T00:00:00Z |
long_lat |
ENVELOPE(-63.992,-63.992,-64.786,-64.786) ENVELOPE(-117.1451,-106.69583,49.110065,41.45115) |
geographic |
Stepping Stones |
geographic_facet |
Stepping Stones |
genre |
Ursus arctos Stepping Stones |
genre_facet |
Ursus arctos Stepping Stones |
_version_ |
1782011814182125568 |