There is nothing new about ecologists thinking about integration of humans
into ecosystems. In the paper that defined "ecosystems", Arthur Tansley
(1935) wrote:
“Ecology must be applied to to conditions brought about by human
activities. The ‘natural’ entities and their anthropogenic derivatives
I know of at least 2:
The trophic state index (TSI), which the state of Minnesota uses; and, a
new one, the TDO3, developed by Minnesota DNR (Peter Jacobsen), which
indicates which lakes will have a DO less than 3, based on temperature,
morphometry, average total P, and day of the year.
On Sat, N
