BIO SCI E179 Lecture Notes - Lecture 6: Crassulaceae, Phosphoric Acids And Phosphates, Primary Production
5 Mar 2016
School
Department
Course
Professor
Document Summary
Vernal pools: marshes, swamps, bogs, fens, vernal pools, video notes: what makes a quality lake, marshes, swamps, bogs, fens, swamps and marshes are open systems whose water sources are rivers or streams, bogs and fens are closed systems. The swamp has the least residence time: order from least to greatest: swamp, marsh, fen, bog, hydraulic residence time is the time that required to refill an empty lake with its natural inflow. It is calculated by dividing the volume by the inflow or outflow rate. Updated: february 2016: hydraulic residence time = 0. 4 days; open system (river); productivity to biomass ratio (p:b) = 0. 07 (shorter than other types); % organic matter is smallest; ph 3 7 (variable). Bogs: bogs accumulate peat and are dominated by acidophilic mosses (notably sphagnum moss, an acid-tolerant moss) and sedges. Because of the acidity of their water, bogs have few or no trees or aquatic macrophytes.
