Dunster & Dunster 1996.15. (Ecosystem) - Processes or activities that weaken an ecosystem, adversely affecting biological diversity. <a href="http://www.nature.nps.gov/nrbib/HTML%20files/32.htm#315216.">http://www.nature.nps.gov/nrbib/HTML%20files/32.htm#315216.</a> (Environmental) - Exhaustion or destruction of a potentially renewable resource such as air, water, forest, or wildlife by consuming it at a rate faster than it is naturally renewed.