PMID: 15224725Jul 1, 2004Paper

Contaminant trends in reservoir sediment cores as records of influent stream quality

Environmental Science & Technology
Peter C Van Metre, Barbara J Mahler

Abstract

When reconstructing water-quality histories from lake and reservoir cores, it is sometimes assumed that the chemical signatures in the cores reflect historical water quality in the influent streams. To investigate this assumption, concentrations of metals, PAHs, and organochlorine compounds in sediment cores were compared to those associated with an influent-stream suspended sediment for three reservoirs in Fort Worth, TX, and two reservoirs in Boston, MA, U.S.A., and interpreted in light of land-use and regulation histories. In evaluating relations between suspended sediments and cores, three levels of preservation were indicated: (1) influent concentrations and historical trends are preserved in cores (metals at all sites; some organic contaminants at some sites); (2) some loss occurs during transport and initial deposition but relative historical trends are preserved in cores (some organic contaminants at some sites); and (3) neither stream concentrations nor relative historical trends are preserved (dieldrin and p,p'-DDT). The degree of preservation of influent concentration histories varied between lakes, particularly for PAHs. The results support the use of sediment cores to infer streamwater-quality histories for many co...Continue Reading

References

Apr 25, 2003·Archives of Environmental Contamination and Toxicology·B J Mahler, P C Van Metre

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Citations

Sep 15, 2011·Journal of Environmental Monitoring : JEM·Fengyu ZanKevin M Yeager
Jan 3, 2013·The Science of the Total Environment·William R SelbigSteven R Corsi
Nov 13, 2009·The Science of the Total Environment·Patrick J PhillipsCarolyn VanAlstyne
Sep 4, 2009·The Science of the Total Environment·Elin M UlrichStewart A Rounds
Nov 30, 2010·The Science of the Total Environment·Peter C Van Metre, Barbara J Mahler
Sep 23, 2014·Integrated Environmental Assessment and Management·Peter C Van Metre, Barbara J Mahler
Feb 13, 2009·Environmental Science & Technology·Peter C Van Metre, Christopher C Fuller
Feb 11, 2010·Environmental Science & Technology·Anita ThapaliaEdward R Landa
Sep 16, 2021·Environmental Science. Processes & Impacts·Carluvy Baptista-SalazarSofi Jonsson
Aug 30, 2005·Environmental Science & Technology·Peter C Van Metre, Barbara J Mahler

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