Ecological effects after an alum treatment in Spring Lake, Michigan

Journal of Environmental Quality
Alan D Steinman, Mary Ogdahl

Abstract

A whole-lake alum treatment was applied to eutrophic Spring Lake during October and November 2005. Eight months later, an ecological assessment of the lake was performed and compared with data collected in 2003 and 2004. Field measurements showed reduced soluble reactive phosphorus (SRP) and total phosphorus (TP) concentrations in the water column the summer after the alum application, but chlorophyll levels and irradiance profiles were not significantly affected. Total macroinvertebrate density declined significantly in 2006 compared with 2004, with chaoborids and oligochaetes experiencing the greatest reductions. Internal phosphorus release rates, measured using sediment cores incubated in the laboratory, ranged from -0.052 to 0.877 mg TP m(-2) d(-1) under anaerobic conditions. These internal loading rates were significantly lower than those measured in 2003 at three out of four sites. Mean porewater SRP concentrations were lower in 2006 than in 2003, but this difference was statistically significant only under aerobic conditions. The NaOH-extractable SRP fraction in the sediment was also significantly lower in 2006 compared with 2003, whereas the HCl-extractable SRP sediment fraction showed the opposite pattern. Overall, the...Continue Reading

References

Jun 14, 2003·TheScientificWorldJournal·M SondergaardE Jeppesen
Nov 13, 2004·Journal of Environmental Quality·Alan SteinmanK Ramesh Reddy
Jun 24, 2005·Proceedings of the National Academy of Sciences of the United States of America·Stephen R Carpenter
Jun 30, 2005·Environmental Science & Technology·Kasper ReitzelHenning S Jensen

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Citations

Mar 11, 2010·Environmental Monitoring and Assessment·Alan D SteinmanCarl R Ruetz
Sep 20, 2012·Environmental Monitoring and Assessment·Gurpal S ToorCraig D Stanley
Sep 10, 2010·Chemosphere·Michael A Anderson, Jacob Berkowitz
Mar 28, 2016·The Science of the Total Environment·Changhui WangHuacheng Xu
Aug 4, 2015·Environmental Monitoring and Assessment·Alan D SteinmanKurt Thompson
Sep 18, 2017·Environmental Science and Pollution Research International·Henri Márquez-Pacheco, Anne Margrethe Hansen
Oct 27, 2012·Journal of Environmental Quality·Alan D Steinman, Mary E Ogdahl

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