d6d7c75b_harm_land___ManagingWholes_com__Brittle
[Nonbrittle] Vegetation grows nearly everywhere, on roofs and gutters, on rocks and vertical banks, even on window glass [Brittle] 
Bare surfaces are difficult to vegetate and steep banks may remain bare of even algae for decades
Landscape brittleness: how "good" management can harm land | ManagingWholes.com
Brittle