Effects of whole-lake base addition on the optical properties of three clearwater acidic lakes

P. A. Bukaveckas, C. T. Driscoll

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Light attenuation rose significantly after liming. Short-term changes in light attenuation were attributed to increased scattering by suspended calcite particles; such changes persisted for fewer than 15 d due to the rapid dissolution of the calcite. Long-term increases in light attenuation corresponded to increase in light absorption, which were attributed to higher concentrations of light-absorbing substances (gelbstoff) as indicated by higher lake dissolved organic carbon (DOC) concentrations. Within 3 yr after liming, the chemical and optical characteristics of this site were comparable with the pretreatment period. Results from lake liming experiments are consistent with the hypothesis that changes in the photochemical properties and/or the concentration of light-absorbing organic compounds are important mechanisms by which acidification alters the optical properties of lakes. -from Authors

Original languageEnglish (US)
Pages (from-to)1030-1040
Number of pages11
JournalCanadian Journal of Fisheries and Aquatic Sciences
Volume48
Issue number6
DOIs
StatePublished - Jan 1 1991
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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