💧🌏 Greg Cocks: "Mapping Antarctica's Hidden Ic…" - TechHub

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Greg Cocks @GregCocks@techhub.social

Mapping Antarctica's Hidden Ice-Free Lands - A Blueprint For Conservation
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https://phys.org/news/2025-01-antarctica-hidden-ice-free-blueprint.html <-- shared technical article
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https://doi.org/10.1038/s41597-025-04424-y <-- shared paper / spatial dataset
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#GIS #spatial #inventory #mapping #Antarctic #ecosystems #wilderness #biodiversity #environmental #icefree #landcover #climatechange #humanimpacts #habitat #opendata #bioregional #abiotic #spatialmodel #biogeography #raster #model #modeling #spatialdata #futureproofing

work flow diagram - Amalgamation rules for Bioregional Ecosystem Types. Decision tree for lumping candidate bioregional combinations of Habitat Complex and ACBR into the final Bioregional Ecosystem Types. At least 5% of pixels in the candidate unit in question need to be next to a pixel of another unit to be considered “adjacent”. Red arrows are followed upward if the condition is not met, and green arrows are followed downward if it is.

Graphic representation of the hierarchical classification process. Large, coloured cells (top row) represent Tier 1 Major Environmental Units (E1-E5); nested cells (middle rows) represent Tier 2, Habitat Complexes (including Distinct Overlay Ecosystems); and dark blue circles (bottom row) represent Tier 3, Bioregional Ecosystem Types. Geothermal Major Environmental Units are represented as red, orange, and pink nested cells. Penguin breeding areas are represented as a green cell nested within E1. The Lakes Major Environmental Unit (L) has one Habitat Complex (L1) represented by light blue cells. Antarctic Conservation Biogeographic Regions (ACBRs) in Tier 3 are illustrated by semi-transparent horizontal bands. Numbers and sizes of cells and circles are not to scale and are intended for illustration purposes only. Circles representing Bioregional Ecosystem Types have been placed to indicate that not all combinations exist, and existing combinations vary in size.

maps - Spatial distribution of Habitat Complexes within each Major Environmental Unit (top left to bottom right): E1 mild lowlands; E2 midland mesic environments; E3 midland dry sunny environments; E4 rugged high mountains; E5 highland windy plateaus; and G1-G3 geothermal ecosystems with L1 lake ecosystems. Dark grey pixels on each map indicate distribution of ice-free areas assigned to other Major Environmental Units.

photo - Antarctica view, ice free lands

Feb 07, 2025, 10:07 PM··Web

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