Eco-Logical Engineering [coined by Dr Aisling O'Sullivan] means engineering that makes sense for ecosystem health as well as for human well-being; really, the former is a pre-requisite for the latter!
There is an International Ecological Engineering Society based in Switzerland -- see Links, Societies.
There is a Journal of Ecological Engineering [Elsevier].
Two of our 'Who we work with' partners are specifically concerned with ecological engineering: ecoEng Ltd and HydroEco Group -- see the 'Who we work with' page.
One of our Publications, Academic was concerned with the formation of both Ecological Engineers and ecological engineers; see that page for "49 shades of green: ... ".