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Soil & Water Conservation Society of Metro Halifax (SWCSMH)
November 25, 2007
Chemical vs Biological monitoring in limnology
Limnology is a discipline that concerns the study of in-land waters (both saline and fresh), specifically lakes, ponds and rivers (both natural and manmade), including their biological, physical, chemical, and hydrological aspects.
François-Alphonse Forel (1841-1912) established the field with his studies of Lake Geneva. Limnology traditionally is closely related to hydrobiology, which is concerned with the application of the principles and methods of physics, chemistry, geology, and geography to ecological problems.
Seiche and tsunamis!
"Duckweed refers to species of free-floating, stemless aquatic plants touted for their uses in waste treatment, animal feed and pharmaceuticals. Known by botanists under the family of Lemnaceae, duckweed is believed to be both the world's smallest-flowering and fastest-growing plant. It grows 20 times faster than corn, doubling in size within a few days through a natural cloning method. It can tangle the lines of recreational fishermen casting near duckweed along still, freshwater areas where the plants thrive. Duckweed can be used to cleanse wastewater, reducing nitrogen and phosphorous in human waste. Duckweed produces more protein on average than soybeans. It can also be used to feed exotic fish being raised for aquaculture."
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