Hydrophysical and Hydrochemical Controls of Cyanobacterial Blooms in Coursey Pond, Delaware (USA)
| Autor: | D. Tye Pettay, A. Scott Andres, Christopher R. Main, William J. Ullman |
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| Rok vydání: | 2019 |
| Předmět: |
Biogeochemical cycle
Environmental Engineering Watershed Hydraulic retention time Coastal plain Fresh Water 010501 environmental sciences Management Monitoring Policy and Law Cyanobacteria 01 natural sciences Phycocyanin Ponds Waste Management and Disposal Chlorophyll fluorescence 0105 earth and related environmental sciences Water Science and Technology Hydrology geography geography.geographical_feature_category 04 agricultural and veterinary sciences Eutrophication Delaware Total dissolved solids Pollution 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Bloom |
| Zdroj: | Journal of Environmental Quality. 48:73-82 |
| ISSN: | 1537-2537 0047-2425 |
| Popis: | Noxious cyanobacterial blooms are common in many ponds in the mid-Atlantic Coastal Plain. In Delaware, blooms normally occur between July and October, yet no in-depth analyses of the causes and predictors exist. A study using commercially available, high-frequency, continuous, and automated biogeochemical sensors at Coursey Pond, Delaware, a pond known for perennial summer blooms, was conducted to investigate how hydrophysical and hydrochemical conditions affect bloom dynamics. Cyanobacterial abundance (based on the in vivo phycocyanin fluorescence and phycocyanin/chlorophyll fluorescence ratios) increases during periods of high water temperatures (up to 32°C), low discharge through the pond (mean hydraulic residence time ≥5 d) with evaporative concentration of dissolved solids, and decreasing NO concentrations (reaching |
| Databáze: | OpenAIRE |
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