Your comment provides some perspective.
I found a site (cannot confirm accuracy of values, but seem accurate) that had average and the range of salaries at the MDC for the following:
Aquatic Biologist (likely included fisheries guys) - $47K - Range from $34 to $66K
Wildlife biologist - $49K - Range from $36 to $69K
Forester - $39K - Range from $27 to $57K
Botanist - $39K Range from $28 to $50K
If these were the only salaries for their household, I would doubt that most of them would be able to afford a fresh vehicle (or two), nice house, or able to contribute much in sending their kid(s) to college. That is without considerable amount of debt.
I employ over 60 staff members that have a biological science background with a range from 1 to 32 years of experience. Except for some of long tenured folks, nearly all of my staff need a second income from a spouse or partner to have what you describe.