Authorities and guidelines for determining establishment means on iNaturalist

[jdmore]

@cazort

I have noticed that there can be significant disagreement about this stuff. It is not something I would want to leave to being edited by individual users, because talking to the average gardener, they have a lot of misconceptions about what is native and introduced in which regions.

@mftasp

part of the problem is that there are many taxa for which their establishment status is unclear, and different authors disagree

@cmcheatle

there will never be an answer about how to deal with different sources giving different data on native/introduced

Here is a new suggestion for providing a way to deal with this issue:
https://forum.inaturalist.org/t/add-one-but-only-one-new-establishment-means-category-uncertain/3805