I came to the opposite conclusion in reading the OP's post. However, it really is a moot point for many of us. Living on the fringes of a really huge metro area (16 million more or less), wild edibles will be speedily exterminated in any situations where taking of wild game becomes even moderately prevalent. In far northern Canada, you are dealing with a vastly different situation.

If living off the land in any serious way ever becomes necessary, I hope I will be stranded on the northern Channel Islands. One would have a much better chance there with less competition, and readily available seafood is handy in any tidepool.

Years ago an archaeologist and his crew were forgotten by the US Navy on San Miguel Island and spent four days on the island after their regular food was exhausted. It took some work, but they were dining on abalone when some sailor back on the mainland finally woke up and smelled the coffee....