Hydrobiologia

, Volume 191, Issue 1, pp 249–254

Stir-up effect of wind on a more-or-less stratified shallow lake phytoplankton community, Lake Balaton, Hungary

  • Judit Padisák
  • László G.-Tóth
  • Miklós Rajczy
Short-term changes and pilot-scale operations

DOI: 10.1007/BF00026058

Cite this article as:
Padisák, J., G.-Tóth, L. & Rajczy, M. Hydrobiologia (1990) 191: 249. doi:10.1007/BF00026058

Abstract

Microstratification of phytoplankton in the large shallow Lake Balaton (Hungary) was studied during a 24 h period. Dissolved O2 showed biological stratification; flagellates exhibited a definite circadian rhythm. In the middle of the investigation a heavy storm broke out which was followed by the disappearance of differences between different layers of water. Storm-induced destratification is described by cluster-analysis. Abundances of dominant species changed differently in connection with the storm. Numbers of Nitzschia sp. increased due to stirring up from the sediment surface. Numbers of single-celled or colony-forming species (Cyclotella comta, Crucigenia quadrata, Coelosphaerium kuetzingianum) practically did not change. Numbers of all the three dominant filamentous species (Aphanizomenon fos-aquae f. klebahnii, Lyngbya limnetica, Planctonema lauterbornii) significantly decreased, which might be attributed to an unknown loss process and was followed by a competitive displacement by algae of small cell size.

Key words

shallow lakesphytoplanktonseasonal successionshort-term changesmixingfilamentous algaeloss processes

Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Judit Padisák
    • 1
  • László G.-Tóth
    • 2
  • Miklós Rajczy
    • 1
  1. 1.Botanical Department of the Hungarian Natural History MuseumBudapestHungary
  2. 2.Balaton Limnological Research Institute of the Hungarian Academy of SciencesTihanyHungary