Ok, looking at the aerial imagery at https://www.openstreetmap.org/edit#map=16/48.4961/-122.4876 - this is certainly not a reedbed. Reeds have long woody stems which stick up out of the water, and they are a significant barrier to travel. Even wetland=saltmarsh would be inappropriate, because a salt marsh has grasses and similar plants which extend up out of the water. But in this area you can travel freely by canoe or kayak, because the seagrass is under water in all of the aerial imagery.
It looks like this are is above the lowest low tide line, is that right? But perhaps there is just no imagery from low tide? If the area is, in fact, exposed at low tide, then it would be okay to keep the natural=wetland and use a new tag wetland=seagrass for the areas that are covered with eel grass or similar vegetation, since wetland=tidalflat implies no vegetation: https://wiki.openstreetmap.org/wiki/Tag:wetland%3Dtidalflat If there are deeper areas of seagrass which are not exposed at low tide, I would not map these with natural=wetland, since they are always covered in water even at the lowest tides. But you could map these areas with a new tag like natural=seagrass if the eel grass is clearly visible from the surface or in aerial imagery. Joseph Eisenberg On 12/19/19, Clifford Snow <cliff...@snowandsnow.us> wrote: > On Wed, Dec 18, 2019 at 1:00 PM Joseph Eisenberg > <joseph.eisenb...@gmail.com> > wrote: > >> Do you have an example of a location which you wish to tag? >> > > Here is what the researchers have documented > http://www.arcgis.com/home/webmap/viewer.html?url=https://services.arcgis.com/6lCKYNJLvwTXqrmp/ArcGIS/rest/services/PBNERR_2004HabitatMap_for_Publishing/FeatureServer&source=sd > > What is in OSM is https://www.openstreetmap.org/#map=12/48.5094/-122.4945 > >> >> It looks like eelgrass usually grows below the low tide line, unlike a >> salt marsh, and the grasses do not usually reach up above the water. >> So natural=wetland might not be appropriate for these seagrass >> meadows. >> >> Perhaps natural=seagrass would work? >> >> https://iucnrle.org/blog/seagrass-meadows-the-marine-powerhouses/ >> >> https://www.sciencephoto.com/media/728140/view/cape-eelgrass-zostera-capensis- >> https://newenglandboating.com/bay-scallops-and-eelgrass/ >> >> > -- > @osm_washington > www.snowandsnow.us > OpenStreetMap: Maps with a human touch > _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
