Typically salaries are low at entry level technical jobs and for interns but people in the teaching career and those working the corporate sector get good salaries after getting experience.
Career prospects are bright in the field of ecology. Entry level jobs are as research assistant where one works in the field or lab. Later on you take the position of a research scientist who supervises technicians and research assistants. After gaining considerable experience one works as a Environmental Consultant. And may work on projects for restoration of ecological system of some place. College teachers also take up research assignments.