Describes an aqueous environment with low levels of nutrient supply.
Condition of rivers and lakes that have clear water and low biological productivity (oligo = little; trophic = nutrition); are usually clear, cold, infertile headwater lakes and streams.
Describes a lake of low photosynthetic productivity. As a relatively nutrient-poor lake, it is clear and deep with bottom waters high in dissolved oxygen. See Also Eutrophic, See Also Hypereutrophic