Heterotrophic utilization of extracellular products of phytoplankton in a tropical estuary

  • Gomes H
  • Pant A
  • Goes J
 et al. 
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Abstract

Bacterial uptake of algal exudates has been estimated in a tropical
estuary, Dona Paula, where the seasonal fluctuations in hydrographic and
nutrient parameters as well as dissolved organic matter concentrations
and phytoplankton species composition are dominated by the monsoon
regime. A close coupling existed between algal and bacterial trophic
levels. Algal exudation products were rapidly assimilated with short
turnover times. An average 80% of the excreted material was removed by
heterotrophic bacteria and there was a significant correlation between
algal extracellular production and net bacterial uptake of algal
exudates.

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Authors

  • Helga Do R. Gomes

  • A. Pant

  • J. I. Goes

  • A. H. Parulekar

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