Monitoring the quality of rivers and lakes is becoming more and more important as enviornmental concerns increase. A good
dissolved oxygen transmitter used properly is one of the important tools to use in this regard. You may want to look at http://www.ecy.wa.gov/programs/wq/plants/management/joysmanual/4oxygen.html for some useful techniques.
The following papers have been found based on your search criteria. Please select a paper from the list below to find out more information about this paper and to read an abstract if one has been made available.
Biodiversity protection and quality of water: the role of feedbacks in ecosystems