| dataset | url |
|---|---|
| EarthEnv-LandCover-v1.0 | https://earthenv.org//landcover |
| Resolve-Ecoregions-2017 | https://ecoregions2017.appspot.com/ :: https://geospatial.tnc.org/datasets/7b7fb9d945544d41b3e7a91494c42930_0 |
EFG T5.5 Hyper-arid deserts – current maps
T5. Deserts and semi-deserts biome
This page provides information about the valid indicative distribution map for the ecosystem functional group T5.5 Hyper-arid deserts. For older or alternative maps, see here.
Methods
Here is the methods summary for Map code and version: T5.5.web.mix v1.0.
Major and minor occurrences were initially identified using consensus land-cover maps (Tuanmu et al. 2014) and then cropped to selected terrestrial ecoregions (Dinerstein et al. 2017) at 30 arc seconds spatial resolution. Ecoregions were selected if: i) their descriptions mentioned features consistent with those identified in the profile of the Ecosystem Functional Group; and ii) if their location was consistent with the ecological drivers described in the profile.
Datasets
EarthEnv-LandCover-v1.0 (Tuanmu et al. 2014):
Source of global landcover product. Resolution: ca. 1km2, static. Accuracy evaluation: accuracy weighted consensus.
Resolve-Ecoregions-2017 (Dinerstein et al. 2017):
Source of biogeographical range. Resolution: variable (polygons), static. Accuracy evaluation: qualitative (experts judgement).
Processing
Processing steps used in this map are: Selection :: Clipping :: Reclassification :: Thresholds.
Map evaluation
This map is considered to be a Fine quality map based on the following characteristics:
Concept alignment is Semi-direct,general.
Ground observations are NA.
The accuracy evaluation Quantitative accuracy assessment,documented,quantitative.
How to use the data
Available files
Following maps are considered current and valid indicative distribution maps for this ecosystem functional group. Web navigation maps are optimised for use in webapps, but they have similar methods and differ only in details of format and processing.
- Indicative Map (code: T5.5.IM.mix, version v1.0)
- Web navigation (code: T5.5.web.mix, version v1.0)
You can download geospatial data for this map from the following sources:
T5.5.IM.mix (v1.0): Google Cloud bucket :: Zenodo repository (bundle of maps)
T5.5.web.mix (v1.0): Google Cloud bucket :: Zenodo repository (bundle of maps) :: Zenodo repository (EFG map) :: Mapbox tileset :: Earth Engine assets
Note that you need to login to some services like mapbox or earthengine, and in some cases you also need to request access to the files.
License information
Indicative maps have been released with a 
Creative Commons Attribution 4.0 International license.
Datasets used to create this map might have some restriction for commercial use, see details below.
| dataset | license_info |
|---|---|
| EarthEnv-LandCover-v1.0 | https://www.re3data.org/repository/r3d100013469 :: https://creativecommons.org/licenses/by-nc/4.0/ |
| Resolve-Ecoregions-2017 | https://creativecommons.org/licenses/by/4.0/ |
References
References used in this version of the maps.
- Tuanmu, M.-N. and W. Jetz (2014) A global 1-km consensus land-cover product for biodiversity and ecosystem modeling Global Ecology and Biogeography 23(9):1031–1045 DOI:10.1111/geb.12182
- Dinerstein E, Olson D, Joshi A, Vynne C, Burgess ND, Wikramanayake E, Hahn N, Palminteri S, Hedao P, Noss R, Hansen M, Locke H, Ellis EE, Jones B, Barber CV, Hayes R, Kormos C, Martin V, Crist E, Sechrest W, Price L, Baillie JEM, Weeden D, Suckling K, Davis C, Sizer N, Moore R, Thau D, Birch T, Potapov P, Turubanova S, Tyukavina A, de Souza N, Pintea L, Brito JC, Llewellyn Barnekow Lillesø JP, van Breugel P, Graudal L, Voge M, Al-Shammari KF, Saleem M (2017) An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm, BioScience 67: 534–545. DOI:10.1093/biosci/bix014. Data-set available on-line