Here is the WDFW link for pertinent entry level WDFW LE position: http://wdfw.wa.gov/enforcement/careers/entry_level.html

Basics:

Minimum Requirements:

Bachelor’s Degree (natural resource science or criminal justice preferred)
OR
Two-year college degree + 2 years paid, full-time natural resource experience
OR
Two-year college degree + three years active military duty within the last nine years

Then there is the Lateral for experienced police officers:
http://wdfw.wa.gov/enforcement/careers/lateral.html


Basics:

Minimum Requirements:

Two-year college degree
AND
Two years full time law enforcement experience
AND
Current CJTC commission or equivalent


It would seem that a Lateral applicant with a four year natural resources degree, a minor in police science AND has a current police position/CJTC commission and good work history would seem to be a very strong candidate.

Edit: Personally I encourage folks with a resource management educational background to get into WDFW LE.