GGR309H5 Lecture Notes - Lecture 6: Manning Formula, Rating Curve, Throughfall
Document Summary
Hydrology is probably the single most important determinant of the establishment and maintenance of specific types of wetlands and wetland processes. Main influences on wetland hydrology: climate. More prevalent in cool or wet climates. Lower evapotranspirative loss, excess precipitation: basin geomorphology. Small changes in hydrology can result in significant physiochemical and biotic changes. Feedback mechanisms: hydrological impacts on oxygen availability, nutrient cycling, toxicity, biotic species composition, diversity, subsequent changes in hydrological processes, flow paths. I. e. tidal system, groundwater influence: balance between the inflows and outflows of water, water budget, surface contours of the landscape, capacity to store water, subsurface soil, geology and groundwater conditions, capacity to store water. Water balance components: control the turnover rate of wetland. Ratio of throughput to average volume within the system. Important for flux of oxygen and nutrients, removal of waste, etc. t-1 = (qt / v: t-1 = renewal rate (time-1, qt = total inflow rate, v = volume.
