Notes: Candidates may substitute the possession of a Bachelorâs degree in biology, environmental aquaculture, natural science, natural resources management, botany, marine biology, marine ecology or physical oceanography, ichthyology, fisheries management, wildlife management, zoology, or a natural resources management related field of study from an accredited college or university and four years of experience in performing professional biological work in the field of natural resources management for the required experience. Experience: Four years of professional experience conducting research and analysis in the fields of biology, biochemistry, environmental science, natural science, natural resources management, botany, marine biology, marine ecology, physical oceanography, ichthyology, fisheries management, wildlife management or zoology and four years of experience in performing professional biological work in the field of natural resources management.