This will cover a wide variety of plant and animal life forms from the microscopic to the largest. These species work in interconnected relationships. If one element of the population increases or decreases suddenly, it will have an impact on the wider local ecology.
They can further protect themselves to the species or study microbes that contribute to the environment. The roles of occupations are different from ecology in that they pay attention to aquatic (freshwater) ecology in general.
Their work may include impacts from invasive species or habitat provisions, contamination products to water bodies and impacts on life forms. They will also have a good understanding of geology and soil analysis.