@article{251104,
  abstract     = {{Early in December 1990, an incursion of seawater caused destruction of the meromictic stratification in Lake Nagada and Lake Siar. The re-establishment of the meromictic features, the progressive deeping of the halocline and its separation from the oxycline resulted in a strong vertical niche segregation. This strongly affected the distribution of microorganisms in the mixo- and monimolimnia and their microzonation in relation to the physicochemical gradients. The phytoplankton community was relatively simple in both lakes, in contrast to the diverse populations of bacterioplankton and heterotrophic organisms.
The microbial populations in the lower mixolimnion and across the oxic-anoxic boundary are thought to be major centres of production and decomposition of organic matter in the lakes. Over a period of about two months, as physicochemical conditions changed, very rapid changes took place in the composition of both the mixo- and monimolimnetic populations of microorganisms. The striking differences between the populations of phototrophic bacteria in the two lakes, and their waxing and waning, can only partly be explained.}},
  author       = {{Vyverman, Wim and Tyler, Peter}},
  issn         = {{0003-9136}},
  journal      = {{ARCHIV FUR HYDROBIOLOGIE}},
  keywords     = {{POPULATION-DYNAMICS,PHOTOTROPHIC SULFUR BACTERIA,MICHIGAN LAKES,PHYTOPLANKTON,HYPOLIMNIA,TASMANIA,PROTOZOA,SALINE,LIGHT,SINAI}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{385--406}},
  title        = {{Fine-layer zonation and short-term changes of microbial communities in two coastal meromictic lakes (Madang Province, Papua New Guinea)}},
  volume       = {{132}},
  year         = {{1995}},
}

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