GGR227H5 Lecture 8: GGR227 – Lecture 8 Study Notes
Document Summary
The process by which plant biomass is converted to nh3 and nh4 is called_____: denitrification, nitrification, mineralization of decomposition, nitrogen fixation. Which of the following regions has the highest buffering capacity: maritimes, prairies, canadian shield, all of the above have low buffering capacity. Carbon dioxide and methane concentrations are now at higher concentrations than at any time within the last____: 10 million years, 10,000 years, 370, 000 years, 800, 000 years. Formation of lakes: tectonic origin, depressions along rifts or fault scarps that can be filled with water, glacial origin: scoured and or rebounding (isostasy, most lakes in canada. Landslides: damming a river/flowpath: volcanic origin: caldera lakes, glacier lakes: pools on tops of glaciers, glaciers damming a valley. The main parts of a lake: most temperate lakes stratify thermally. Littoral zone - coastal, near shore: pelagic zone - center of the lake. Limnetic zone - surface pelagic zone: profundal zone - deep pelagic zone.