I am looking to map out the salt marshes, mangroves, and tidal flats of the world, but I am having difficulty finding data for this. Does anyone have any such data? This is for a research project at my university. Thanks
File Geodatabase of Mangroves here
The ranges are available as a single data set (File Geodatabase) for most plant species that considered to form part of the mangrove ecosystem.
Mangroves (zip file, 97.8 MB)
See metadata document for further information.
I believe those are also available in the National Wetland invnetory.
This legend shows Vegetated and non-vegetated brackish and saltwater marsh, shrubs, beach, bar, shoal or flat all together.
And this code chart shows how to break out class-subclass and modifiers.
Koordinates.com are usually great with these things.
For example, here's one for the whole of New Zealand.