I'm not sure how many nature search tools you have looked at, or that I may
have sent previously, but here are three:
Nature Rocks in Austin, Texas (Children in Nature Collaborative of Austin
who we have worked closely with) developed a mapping system based on Nature
Rocks http://naturerocksaustin.org/ . Austin's mapping can be replicated
with a relatively small amount of effort and funding. I will check more into
that -- San Diego was going to try replicating it.
Transit and Trails http://www.transitandtrails.org/ is on the Bay Area Open
Space Council's web site with trails and campgrounds that can be reached
with public transportation
Nature Find has been highly recommended and I now see that they have an
iPhone app and licensing
http://naturefind.com/default.asp?inputdata=Mountain%20View%20CA&r=20 . Amy
Pertschuk from the Children & Nature Network said the person working on this
is very committed and easy to communicate with.
Mary