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Alternative Stable States in Shallow Lakes: What Causes a Shift?

  • Irmgard Blindow
  • Anders Hargeby
  • Gunnar Andersson
Part of the Ecological Studies book series (ECOLSTUD, volume 131)

Abstract

Lake T&#00E5;kern and Lake Krankesjön, two shallow, moderately eutrophic, calcium-rich lakes in southern Sweden have shifted between turbid and clearwater states several times during the past decades (Fig. 26.1). Lake Krankesjön shifted from a clearwater state with abundant submerged vegetation to a turbid state with sparse vegetation during the mid-1970s (Karlsson et al., 1976) and back to a clearwater state during 1985. Today, the lake is in the clearwater state, with abundant submerged vegetation dominated by Charophyta (Blindow et al., 1993; Fig. 26.2). Both shifts coincided with deviations from the average water level. During the mid-1970s, the water level during spring and summer was about 15 cm higher than average, whereas it was about 10 cm lower than average during 1983-1985 (Blindow, 1992).

Keywords

White Dwarf Alternative Stable State Average Water Level Turbid State Balmer Line 
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 1998

Authors and Affiliations

  • Irmgard Blindow
  • Anders Hargeby
  • Gunnar Andersson

There are no affiliations available

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