Values in Conservation Biology. Conservation biology acknowledges both instrumental and intrinsic values of species. Intrinsic Value: - Requires relationships for expression (e.g., Mountain Gorilla needs fruit, forest, mate). - Includes moral, existence, and nonuse values. Instrumental Value: - Derived from goods and services provided by living organisms. - Includes use, indirect use, direct use, option, and quasi-option values. - Critical for human survival and economy (food, clothing, transportation, etc.)..