BIO 2129 Lecture Notes - Lecture 3: Cyanobacteria, Lake Superior, Photic Zone
13 Dec 2014
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Verticial stratification is due to season variation. What is the ecological complication and result. Trophic status: amount of nutrients flowing into the system that are present and available for use particularly for and from primary producers. Could be algae and cyanobacteria, plants (rooted); all of which consumer those nutrients. The amount of nutrients will influence the amount of primary production. Trophic status has three clusters: oligotrophic: low phosphorus content. Can"t support too large of populations: mesotrophic: moderate amount of nutrients. Eutrophic: nutrient dense, lots of phosphorus likely also nitrogen and carbon. Great lakes are so huge that at the bottom of lake superior for example some of the water at the bottom is left over from previous glacier periods. These specific great lakes act differently than smaller lakes due to their sheer vastness. Oxygen solubility goes down increase temperature.
