Yurkowski et al. 2018 - Arctic Hotspots DDI shapefiles.zip (1.15 MB)
Yurkowski et al. 2018 - Arctic Hotspots DDI shapefiles.zip
dataset
posted on 2018-09-25, 19:42 authored by David YurkowskiDavid Yurkowski, Marie Auger-Méthé, Mark L. Mallory, Sarah Wong, H. Grant Gilchrist, Andrew E. Derocher, Evan Richardson, Nicholas J. Lunn, Nigel E. Hussey, Marianne Marcoux, Ron Togunov, Aaron T. Fisk, Lois Harwood, Rune Dietz, Aqqalu Rosing-Asvid, Erik W. Born, Anders Mosbech, Jérôme Fort, David Grémillet, Lisa L. Loseto, Pierre R. Richard, John Iacozza, Frankie Jean-Gagnon, Tanya M. Brown, Kristin Westdal, Jack Orr, Bernard LeBlanc, Kevin J. Hedges, Margaret Treble, Steven T. Kessel, Paul J. Blanchfield, Shanti Davis, Mark Maftei, Nora C. Spencer, Laura A. McFarlane Tranquilla, William A. Montevecchi, Blake Bartzen, Lynne Dickson, Christine Anderson, Steven H. FergusonThese filesets support data from the following paper published in Diversity and Distributions:
Abundance and species diversity hotspots of tracked marine predators across the North American Arctic
DOI: 10.1111/ddi.12860
These
filesets are GIS shapefiles (WGS84 projection) which contain the
Getis-Ord Gi* analysis outputs for abundance densities and hotspots by
species
group and abundance and species diversity densities and hotspots across
species
groups by season.
Species groups
"CP" - cetaceans and pinnipeds
"SB" - seabirds
"PB" - polar bears
Headings
"FID" - grid cell number
"Count_PTT" - number of unique individuals
"Count_Spec" - number of unique species
"GiZScore" - Getis-Ord Z score
"GiPValue" - Getis-Ord P-value
"Gi_Bin" - statistically significant hotspots at a=0.90 (1), 0.95 (2) and 0.99 (3) levels. Statistically significant coldspots at a=0.90 (-1), 0.95 (-2) and 0.99 (-3) levels. A score of 0 is non-significant.
See the following link for more details on Getis-Ord Gi* output from ArcGIS: http://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-statistics-toolbox/hot-spot-analysis.htm
