Hydrobiologia

, Volume 137, Issue 2, pp 125–134 | Cite as

Spring phytoplankton of 54 small lakes in southern Finland

  • Lauri Arvola
Article
Revised:
Accepted:

Abstract

The abundance and species composition of phytoplankton communities were studied rapidly following the spring ice-melt in 54 small Finnish lakes that form a unique mosaic of water bodies. Phytoplankton biomass and cell density varied among the study lakes with a factor 100 between the lowest and highest values. Highest biomass and densities of phytoplankton characterized small ( < 0.05 km2) lakes with moderate or high water colour (> 80 mg Pt l−1). In contrast, biomass was low in clear-water lakes and lakes where water throughflow was strong. Typically one species dominated most phytoplankton communities, and usually comprised up to about 45% of the total phytoplankton biomass. Two-thirds of the 103 taxa observed were Chrysophyceans and Chlorophyceans. The most common taxa wereChlamydomonas spp. (Chlorophyceae) andCryptomonas ovata (Cryptophyceae).

Keywords

phytoplankton species composition forest water ecosystems 
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Copyright information

© Dr W. Junk Publishers 1986

Authors and Affiliations

  • Lauri Arvola
    • 1
  1. 1.Lammi Biological StationUniversity of HelsinkiLammiFinland

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