Eutrophic Lakes
Lakes are divided into three trophic categories: oligotrophic, mesotrophic and eutrophic. The prototypic oligotrophic lake is a large deep lake with crystal clear waters and a rocky or sandy shoreline. This concept realizes that the trophic state of lakes varies between geological regions. A quarter of the lakes with the best water quality per region is used to represent "natural" or "background" water. We addressed these data gaps by conducting the region’s first lakes and reservoirs eutrophication assessment. By monitoring and evaluating the eutrophication status of these five lakes in different hydrological periods, we explored the influence mechanism of hydrological connectivity on lake eutrophication. We examined recent eutrophication trends of freshwater lakes at a national scale by collating 32 years (1990–2021) of growing season (July-September) in situ chlorophyll-a, nutrient, transparency, and.
Surveys have shown that more than 40.0% of lakes and reservoirs in the Americas are in eutrophic trophic level [1, 74], and this is a major cause of concern in the developing as well as developed.
eutrophic 1 - Mississippi Sportsman
