PhD Natural Resources/Env Science - top programs?

[iowaguy]

Hi fellow Grad Cafe folks, I'm researching the possibility of applying to a PhD program in Natural Resources Management, Environmental Science, etc. I would apply fall 2012 for admission in fall 2013. Trying to learn more about the top programs out there. Anyone have some input on what you would consider the top 12 programs in this field? My B.S. is mech engineering, M.S. emphasis (U of Montana) is watershed science/management and I have 8 years professional experience (following my M.S.) working in the conservation/natural resources field. Hoping to work in academia following my PhD...

Looking forward to a dialogue with others interested in this field...

Thanks,

Iowa Guy