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Historical Records of Changes in the Productivity of Lakes

  • Robert G. Wetzel
  • Gene E. Likens

Abstract

Changes in climate and in the geomorphology of drainage basins in the past have altered water and nutrient budgets and, as a result, productiv­ity and rates of eutrophication of lake eco­systems. In many cases, human activites have accelerated greatly these changes, but on a much shorter time scale. A record of the resulting alterations in chemistry, flora, and fauna is left in the sediments as static derivatives of dynamic systems. Paleolimnology assesses the sedimen­tary record and the diagenetic processes that may alter it. An ultimate goal is to gain insight into the past conditions that caused a lake to enter a different level of productivity.

Keywords

Sediment Core Drainage Basin Surficial Sediment Chlorophyll Derivative Tertiary Butyl Alcohol 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • Robert G. Wetzel
    • 1
  • Gene E. Likens
    • 2
  1. 1.Department of Biology, College of Arts and SciencesUniversity of AlabamaTuscaloosaUSA
  2. 2.Institute of Ecosystem StudiesThe New York Botanical Garden, Cary ArboretumMillbrookUSA

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