EFG MFT1.3 Coastal saltmarsh – current maps

MFT1. Brackish tidal biome

This page provides information about the valid indicative distribution map for the ecosystem functional group MFT1.3 Coastal saltmarshes and reedbeds. For older or alternative maps, see here.

Methods

Here is the methods summary for Map code and version: MFT1.3.web.orig v2.0.

The indicative map for for coastal saltmarshes and reedbeds (MFT1.3) was developed by resampling known distribution records summarised by McOwen et al. (2017). We used a buffer of 1km around the distribution data and a 30 arc second grid, thus large aggregations (> 1km²) are depicted as major occurrences, and the buffer areas with small occurrences are shown as minor occurrences. The original data is available at UNEP-WCMC.

Datasets

GlobalSaltmarshes2017 (McOwen et al. 2017):

Source of validated distribution records. Resolution: <1km2, static. Accuracy evaluation: qualitative (experts judgement).

dataset	url
GlobalSaltmarshes2017	https://data.unep-wcmc.org/datasets/43

Processing

Processing steps used in this map are: Reclassification :: Buffering.

Map evaluation

This map is considered to be a Coarse quality map based on the following characteristics:

Concept alignment is Direct,specific.

Ground observations are yes.

The accuracy evaluation Qualitative expert assessment,documented,qualitative.

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: MFT1.3.web.orig, version v2.0)
• Indicative Map (code: MFT1.3.IM.orig, version v1.0)

You can download geospatial data for this map from the following sources:

MFT1.3.web.orig (v2.0): Google Cloud bucket :: Zenodo repository (bundle of maps) :: Zenodo repository (EFG map) :: Mapbox tileset :: Earth Engine assets

MFT1.3.IM.orig (v1.0): 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
GlobalSaltmarshes2017	https://creativecommons.org/licenses/by-nc/3.0/legalcode

References

References used in this version of the maps.

• McOwen CJ, Weatherdon LV, van Bochove JW, Sullivan E, Blyth S, Zockler C, Stanwell-Smith D, Kingston N, Martin CS, Spalding M, Fletcher S (2017) A global map of saltmarshes Biodiversity Data Journal 5: e11764 DOI:10.3897/BDJ.5.e11764