Chapter

Tracking Environmental Change Using Lake Sediments

Volume 5 of the series Developments in Paleoenvironmental Research pp 579-614

Date:

Human Impacts: Applications of Numerical Methods to Evaluate Surface-Water Acidification and Eutrophication

  • Gavin L. SimpsonAffiliated withEnvironmental Change Research Centre, University College London Email author 
  • , Roland I. HallAffiliated withDepartment of Biology, University of Waterloo

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Abstract

In this chapter we review the contributions that numerical techniques have made in answering key questions in applied palaeolimnology relating to studies of lake acidification and eutrophication. Palaeoecological data and calibration functions in particular provide some of the key observations implicating acid emissions from industrial and power-generation sources as the major cause of the recent acidification of lakes in northern Europe and North America. Sedimentary records and subsequent quantitative analyses play a similar role in understanding the eutrophication of lakes, and today are being used widely to inform management of enriched lakes and to set restoration targets for recovery.

Keywords

Acidification Analogues Calibration functions Constrained ordination Diatoms Ecosystem restoration Environmental management Eutrophication Gaussian logistic (=logit) regression Maximum likelihood calibration Ordination pH Phosphorus loadings Reference conditions Total phosphorus Variation partitioning Weighted-averaging partial least squares regression and calibration