Start with networking then and try to distill a twenty-second description of the the work you're looking for (along with the long form version). You'll have to work out a short blurp on why you're the ideal candidate for the position while you're at it. You'll end up with ten or more job descriptions, three or more resumes, and any number of introduction/inquiry letters.

You'll need a business card with name, title, and an email address. A piece of related artwork and if you're up for it a simple slogan. It's a corporate you image thing. Like having a button shirt and tie, at least dockers, and a business card case.

Classmates, instructors, contacts from your paper, and those two short term jobs. Say hi, see what they know, ask who they know, and gather contact information. As for Google Fu you seem to have a network of beings who use computers from time to time, post a few descriptions and talk it through a few times. You'll have to sort through the ideas and suggestions then see how they fit with your own thinking and those close to you.

So, lab work? field work? research? waterways? fish? birds? plants? human impact? all of the above? write grant proposals? publish? change public view? propose new environmental laws? Let the introspection begin. :-)