At the following web site of Utah State University, you can find a list of recorded seminars on a variety of ecological topics given by invited speakers:
http://www.usu.edu/ecology/htm/seminar/recorded-seminars
In particular, I recommend:
- the two presentations by Gene Likens on ecosystem ecology
- the two presentations by Jordi Bascompte on networks in ecology and society / architecture of biodiversity
- the two presentations by myself on landscape ecology and sustainability science / urban ecology
