EFG F2.1 Large perm lakes – current maps
F2. Lakes biome
This page provides information about the valid indicative distribution map for the ecosystem functional group F2.1 Large permanent freshwater lakes. For older or alternative maps, see here.
Methods
Here is the methods summary for Map code and version: F2.1.web.alt v4.0.
Locations of large lakes (>100km2)were taken from the HydroLAKES database (Messager et al. 2016) and combined with global estimates of permanent surface water surfaces (classes 1, 2 and 7 from Pekel et al. 2016). Freeze/thaw lakes in boreal and polar climates (temperature of coldest quarter > -10°C) were excluded (Beck et al. 2018) (see F2.3). Occurrences were aggregated to 30 arc second spatial resolution.
Datasets
GSW-1.1 (Pekel et al. 2016):
Source of Surface water phenology. Resolution: <1km2, periods/epochs. Accuracy evaluation: >90%.
HydroLAKES-1.0 (Messager et al. 2016):
Source of validated distribution records. Resolution: <1km2, static. Accuracy evaluation: quantitative (subsets).
KG-climate-2018 (Beck et al. 2018):
Source of climatic stratification. Resolution: ca. 1km2, periods/epochs. Accuracy evaluation: >80%.
Processing
Processing steps used in this map are: Thresholds :: Clipping :: Reclassification :: Aggregation.
Map evaluation
This map is considered to be a Fine quality map series based on the following characteristics:
Concept alignment is Direct,specific.
Ground observations are yes.
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.
- Web navigation (code: F2.1.web.alt, version v4.0)
- Indicative Map (code: F2.1.IM.alt, version v4.0)
You can download geospatial data for this map from the following sources:
F2.1.web.alt (v4.0): Google Cloud bucket :: Zenodo repository (bundle of maps) :: Zenodo repository (EFG map) :: Mapbox tileset :: Earth Engine assets
F2.1.IM.alt (v4.0): Google Cloud bucket :: Zenodo repository (bundle of maps)
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 |
|---|---|
| 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/ |
| HydroLAKES-1.0 | Creative Commons Attribution (CC-BY) 4.0 International License :: http://creativecommons.org/licenses/by/4.0/ |
| KG-climate-2018 | https://www.gloh2o.org/terms-of-use/ :: https://creativecommons.org/licenses/by-nc/4.0/ :: CC BY 4.0 |
References
References used in this version of the maps.
- 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
- Messager, M.L., Lehner, B., Grill, G., Nedeva, I., Schmitt, O. (2016) Estimating the volume and age of water stored in global lakes using a geo-statistical approach Nature Communications 13603 DOI:10.1038/ncomms13603
- Beck, H., Zimmermann, N., McVicar, T. et al. (2018) Present and future Köppen-Geiger climate classification maps at 1-km resolution Sci Data 5, 180214 DOI:10.1038/sdata.2018.214