Hi! First I would like to thank you all for replying!
I do not have traditional research experience, though I am working on the research for a book about the pre-colonial ecology of New York City. I am also an assistant ecologist at a consulting firm; I have been with the company for 6 months. Last semester, I took a graduate class called ecotoxicology. All of these recent experiences shaped my future, in ways that were not imaginable before. At my under grad, we have a "science track," which I have taken. It includes various science electives within the department, and across other departments like biology and I believe math.
For the summer I am trying to get some research stuff, and I am in the process of applying. I would prefer to do research in the fall, so I can have the summer to prepare for the GRE.
From all the people who I have spoken with so far, no one strongly feels the need for me to take physics. If the summer ends up not being promising, I will consider taking classes or trying to enroll in the ecology and evolutionary biology post-bac at Columbia...however funding for the program might be an issue.
Thanks again!