Last edited by Dijas
Tuesday, August 11, 2020 | History

2 edition of Impact of algal-available phosphorus on Lake Erie water quality found in the catalog.

Impact of algal-available phosphorus on Lake Erie water quality

Douglas K Salisbury

Impact of algal-available phosphorus on Lake Erie water quality

mathematical modeling

by Douglas K Salisbury

  • 3 Want to read
  • 38 Currently reading

Published by U.S. Environmental Protection Agency, Environmental Research Laboratory, U.S. Environmental Protection Agency, Center for Environmental Research Information [distributor] in Duluth, MN, Cincinnati, OH .
Written in English

    Subjects:
  • Phosphorus -- Environmental aspects -- Erie, Lake -- Mathematical models

  • Edition Notes

    StatementDouglas K. Salisbury, Joseph V. De Pinto, and Thomas C. Young
    ContributionsDePinto, Joseph V, Young, Thomas C, Environmental Research Laboratory (Duluth, Minn.)
    The Physical Object
    Pagination3 p. :
    ID Numbers
    Open LibraryOL14891456M

      In , the Great Lakes Water Quality Agreement, a binational pact between the U.S. and Canada, established a goal of slashing phosphorus pollution into western Erie by 20% by , a . Validation of a diatom-based index of water quality confirms its utility in monitoring of the Lake Erie's nearshore area Václava Hazuková, Jeffrey R. Johansen, Gerald V. Sgro Pages

    In , Lake Erie experienced the largest harmful algal bloom in its recorded history, with a peak intensity over three times greater than any previously observed bloom. Western Lake Erie HAB Early Season Projection The severity of the western Lake Erie cyanobacterial harmful algal bloom (HAB) is dependent on input of bioavailable phosphorus, particularly from the Maumee River during the loading season (March 1 – July 31).

    Recent events in Ohio have demonstrated the challenge treatment facilities face in providing safe drinking water when encountering extreme harmful algal bloom (HAB) events. Over the last two years the impact of HAB-related microcystins on several drinking water treatment facilities with source water originating from Lake Erie were measured, during which time multiple bloom events were observed.   Voters in Toledo, Ohio, will decide if Lake Erie has legal rights. It's an attempt to amend the city's charter after efforts failed to address toxic algal blooms that affect water supplies.


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Impact of algal-available phosphorus on Lake Erie water quality by Douglas K Salisbury Download PDF EPUB FB2

United States Environmental Protection Agency Environmental Research Laboratory Duluth MN Research and Development EPA/S Apr. SEPA Project Summary Impact of Algal-Available Phosphorus on Lake Erie Water Quality: Mathematical Modeling Douglas K. Salisbury, Joseph V.

DePinto, and Thomas C. Young Accurate estimates of the forms and bioavailability of phosphorus loadings are necessary for loading trend analysis and water quality model development.

Impact of algal-available phosphorus on Lake Erie water quality: mathematical modeling Author: Douglas K Salisbury ; Joseph V DePinto ; Thomas C Young ; Environmental Research Laboratory. Prior to use in the DCDA, the filtered Lake Erie water was spiked with 1, J,Lg N0 3 -N/L and the full complement of trace elements recommended by Residue Concentrate Tributary Sample Filtrate TP PHOSPHORUS IN SUSPENDED SEDIMENTS RESULTS Guillard and Lorenzen () in their freshwater algal medium, thus ensuring phosphorus limitation in Cited by: For the purpose of comparing the relative availability of particulate phosphorus (P) from various sources to the Great Lakes, algal-available P was determined on suspended solids and bottom sediments from tributaries, wastewater suspended solids, lake bottom sediments, and eroding bluff Cited by: Nan A.

Baker (R) Westlake: The legislature has taken 4 actions that are directed at addressing Lake Erie water quality: 1. Created the Healthy Lake Erie Fund and appropriated $ million used to.

No evidence was found that the chronic loading of phosphorus in the area resulted in a higher prevalence of Cladophora compared with other areas of the lake.

The abundance of dreissenid mussels, reaching individuals/m 2, was not correlated with water chemistry features or biomass of by: 5. approach that was applied to Lake Erie in The report includes the results from a range of phosphorus load-response curves for Lake Erie, generated by models that relate phosphorus loads to objectives outlined in the Nutrients Annex (Annex 4) of the Amendment to the Great Lakes Water Quality Agreement (GLWQA).

Dissolved phosphorus is a special problem in Lake Erie because it is much more “bioavailable” to algae than particulate phosphorus. In other words, algae can easily consume dissolved phosphorus, leading to rapid algal growth.

Toxic Algal Bloom, Lake Eire, (Credit: NASA) The green scum shown in this image is the worst algal bloom Lake Erie has experienced in decades. Such blooms were common in the lake’s shallow western basin in the s and 60s.

Phosphorus from farms, sewage, and industry fertilized the waters so that huge algae blooms developed year after year. Introduction. Phosphorus (P) generated from human activities, such as agriculture, industry and domestic consumption, is a major contributor to water eutrophication and the deterioration of aquatic biodiversity (Han et al., ; Morse and Wollheim, ; Roy and Bickerton, ).In general, the spatial distribution of nutrient inputs varies across regions (Bricker et al., ) because of Author: Ying Li, Haw Yen, Qiuliang Lei, Weiwen Qiu, Jiafa Luo, Stuart Lindsey, Lihuan Qin, Limei Zhai, Hongy.

Regulation of phosphorus loading is considered to be the primary method of eutrophication control for many lake systems. It is therefore necessary to have accurate estimates of the forms and bioavailability of all phosphorus sources in order to develop the most cost effective load control measures.

Research at Clarkson University, aimed at improving the accuracy of estimates of Cited by: Excessive algal blooms in the s and s were a major driver for the signing of the first Agreement in In that first Agreement, the Governments of Canada and the U.S.

agreed to reduce phosphorus loads to Lake Erie by more than 50 percent (f to 14, metric tons per year). In the Agreement. Lake Erie HABs and Lake Water Quality: • Detection, mapping, and warning network 2. Producing Safe Drinking Water: • “Arm” water treatment plants with tools, technology, and training to remove toxins 3.

Land Use Practices, Sources of Enrichment, Water Quality and Engineered Systems (e.g., edge of field monitoring and BMPs) 4. and therefore do not appear to convert to algal available P. Assessing Algal Available P During the s and s there was considerable interest in developing phosphorus management strategies for Lake Erie.

Lake Erie was experiencing excessive growths of algae that led to impaired water quality and low dissolved oxygen in the lake. A three-year study led by Ohio State University found that agricultural practices to reduce the phosphorus flowing into Lake Erie and causing harmful algal. Declining or low water quality impacts the value of lakes – both economically, ecologically, and socially.

For example, if pollution enters a lake, it can reduce the water quality enough such that it is unsafe to drink as well as harm organisms that live in the water, reducing the ecological value of the lake. Intensive work to reduce the phosphorus load from its watershed improved Lake Erie’s water quality throughbut water quality has since declined, resulting in recurring harmful algal blooms throughout the lake and summer hypolimnetic hypoxia in the central basin.

The Role of Phosphorus Stratification in Cropland Soils in Increasing Lake Erie Phosphorus Loading Increasing dissolved reactive phosphorus (DRP) concentrations in runoff from cropland draining into the western basin of Lake Erie are thought to be a major cause of the return of harmful algal blooms to the lake.

National Center for Water Quality Research NCWQR at Heidelberg University NCWQR on Facebook Funding for the website generously provided by the Great Lakes Protection Fund Heidelberg Tributar. A recent study titled “Estimating the economic costs of algal blooms in the Canadian Lake Erie Basin” published in the July issue of the journal Harmful Algae quantified the costs of HABs in the Canadian portion of the Lake Erie basin.

The study was a collaboration between economists and Environment and Climate Change Canada. Cyanobacteria clog Lake Erie, which is about 92 km wide, in this satellite image. Credit: Richard Stumpf. “Harmful algal blooms are one of the worst water quality issues that we need to deal with across the globe,” says Diane Orihel, an aquatic ecologist at the University of U.S.

economy loses $2 billion per year from damages that require expensive water treatment and result in Cited by: 6.The Western Lake Erie Basin (WLEB) is experiencing Harmful Algal Blooms (HABs) with increasing frequency and intensity, causing regional ecological and human health concerns.

Learning what does and does not contribute to HABs is critical to developing a strategy to protect the Great Lakes, a resource that makes up 21 percent of the earth’s.S Impact Of Algal-available Phosphorus On Lake Erie Water Quality mathematical Modeling.

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