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PDF Wisconsin Lake Modeling Suite - Wisconsin Department of Natural Resources Nutrients such as nitrogen and phosphorus tend to be limiting resources in standing water bodies, so increased concentrations tend to result in increased plant growth, followed by corollary increases in subsequent trophic levels. trophic state index calculator - fucae.com The problem may be as simple as the data were calculated incorrectly or that a measurement was done in a manner that produced different values. Source: 2022 S.D. Three variables, chlorophyll a, Secchi depth, and total phosphorus, independently estimate algal biomass. This is opposed to biomagnification and is due to a decreased concentration from increased algal uptake. . This might suggest that the algae are nitrogen-limited or at least limited by some other factor than phosphorus. These components are then combined, as indicated in equations A-C below, to determine the overall TSI. These deviations may occur if large particulates, such as blue-green algae (Cyanobacteria), dominate, and transparency is less affected by the particulates. Use the deviations of the Secchi depth and total phosphorus indices from the chlorophyll index to infer additional information about the functioning of the lake. The trophic state is defined as the total biomass in a waterbody at a specific location and time. Fish. Haller, J.V. Oglesby, R.T., J.H. Learn about Lake County's 36 freshwater springs: location, characteristics, water quality and flow, and recreation opportunities, Be informed about important water-related news with implications in Hillsborough County and elsewhere, Watch these videos to learn how to protect and enjoy Lake County's waterways, This interactive map brings all water resource-related information together in one place, Use this interactive map to find data from continuously-reporting monitoring stations, Use this tool to graph water resource data and to download data for your own analysis, View the geographic distribution and variability of rainfall amounts, access statistical rainfall summaries, or download rainfall data, Find a particular water resource on any of the Water Atlas websites using this tool, Search our library of water-related documents, maps, websites, videos and organizations, Be informed about important water-related news from Lake County and elsewhere, Use this calendar to find opportunities for recreation, volunteering, and citizen participation, Find information to help homeowners, businesses, and contractors reduce stormwater pollution, See recent and historic photos of area waterways, submitted by Water Atlas sponsors, partners and users, Learn about ways you can help to restore Lake County's watersheds. Whatever the reason, averaging makes no sense at all.