EFG F1.6 Episodic arid rivers – current maps
F1. Rivers and streams biome
This page provides information about the valid indicative distribution map for the ecosystem functional group F1.6 Episodic arid rivers. For older or alternative maps, see here.
Methods
Here is the methods summary for Map code and version: F1.6.web.mix v1.0.
Freshwater ecoregions (Abell et al. 2008) were identified as containing occurrences of these functional groups 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. Within the selected ecoregions, remote sensing estimates of ephemeral surface water (classes 4, 5 and 8 from Pekel et al. 2016) were used to identify major occurrences. The remaining areas of selected ecoregions were mapped as minor occurrences.
Datasets
FEOW-2008 (Abell et al. 2008):
Source of biogeographical range. Resolution: variable (polygons), static. Accuracy evaluation: qualitative (experts judgement).
GSW-1.1 (Pekel et al. 2016):
Source of Surface water phenology. Resolution: <1km2, periods/epochs. Accuracy evaluation: >90%.
Processing
Map evaluation
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: F1.6.IM.mix, version v2.0)
- Web navigation (code: F1.6.web.mix, version v1.0)
You can download geospatial data for this map from the following sources:
F1.6.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.
| dataset | license_info |
|---|---|
| FEOW-2008 | https://www.feow.org/copyright :: custom license :: non commercial use |
| GSW-1.1 | produced under the Copernicus Programme and is provided free of charge, without restriction of use :: Copernicus Regulation :: http://www.copernicus.eu/main/data-access/ |
References
References used in this version of the maps.
- Yamazaki D., D. Ikeshima, J. Sosa, P.D. Bates, G.H. Allen, T.M. Pavelsky (2019) MERIT Hydro: A high-resolution global hydrography map based on latest topography datasets Water Resources Research vol.55, pp.5053-5073 DOI:10.1029/2019WR024873
- Abell R, Thieme ML, Revenga C, Bryer M, Kottelat M, Bogutskaya N, Coad B, Mandrak N, Contreras Balderas S, Bussing W, Stiassny MLJ, Skelton P, Allen GR, Unmack P, Naseka A, Ng R, Sindorf N, Robertson J, Armijo E, Higgins JV, Heibel TJ, Wikramanayake E, Olson D, López HL, Reis RE, Lundberg JG, Sabaj Pérez MH, Petry P (2008) Freshwater ecoregions of the world: A new map of biogeographic units for freshwater biodiversity conservation, BioScience 58: 403–414. DOI:10.1641/B580507
- Pekel JF, Cottam A, Gorelick N, Belward AS (2016) High-resolution mapping of global surface water and its long-term changes Nature 540, 418-422 DOI:10.1038/nature20584