I think that within EEB there's some flexibility. Some researchers want to study every aspect of a single taxonomic group from ecology to behavior to evolution etc.. (Ex: someone who studies ecology/evolution in frogs). Other people specialize more in processes. Instead of focusing on a single taxa, they use many different species to study an ecological or evolutionary theory (Ex: someone who studies communication strategies in varied taxa such as birds, frogs, whales, bats etc.) For example, if you are interested in "vulnerability of species to environmental change" you may decide to work on marine ecosystems and species for your masters, the tools you learn and use to analyze data will likely be applicable to other groups of organisms, but the collection strategies will differ.
So I guess the short answer is, I think you can make it work however you decide to go, just be sure to work on something that you're interested in!
Hi fellow EEBs, just thought I would give you all an update! I never heard from CUNY... so not looking good for me there. But I have three offers from University of Southern California, University of Kansas and University of Chicago. They are all really great options, Chicago was my first choice going into this so I am leaning towards Chicago right now. I really hope you all get good news - this was a brutal year!!