The main thing is are you killing/taking them faster than they can replenish their stocks? And/or promoting an attitude that will likely eventually lead to the decline of species. Slash and burning acres of forest should be regarded differently(and managed differently) than gathering a few sticks to build a fire.

Roundups and collecting of some species does walk a thin line in this regard. Although sustainable collecting practices and roundups are not neccessarily mutually exclusive, I don't know how much peer pressure and internal/external managment there is to abstain from bad practices, ie gassing and/or collecting sensitive of species and from sensitive locations.
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