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Bacterial and phytoplankton nutrient limitation in tropical marine waters, and a coastal lake in Brazil

  • Per Carlsson
  • Edna Graneli
  • Wilhelm Granéli
  • Eliane Gonzalez Rodriguez
  • Wanderson Fernandes de Carvalho
  • Andreas Brutemark
  • Elin Lindehoff
Publishing year: 2012
Language: English
Pages: 37-45
Publication/Series: Journal of Experimental Marine Biology and Ecology
Volume: 418
Document type: Journal article
Publisher: Elsevier

Abstract english

Bioassay experiments were performed two times (with 2 years in between) in order to investigate if nitrogen (N, ammonium), phosphorus (P, phosphate) and carbon (C, glucose) additions would stimulate the growth of bacteria and phytoplankton differently in three different tropical aquatic environments. The water and their indigenous microbial communities were taken from a freshwater coastal lake (Cabiunas), a coastal (Anjos), and an offshore marine station (Sonar) in the Atlantic outside Cabo Frio, Rio de Janeiro State, Brazil. Ammonium, phosphate and glucose were added alone or in combination to triplicate bottles. In the lake, P seemed to be the primary limiting factor during the first experiment, since both bacterial production and phytoplankton growth was stimulated by the P addition. Two years later, however, addition of P inhibited phytoplankton growth. During both years, C was closely co-limiting for bacteria since CP additions increased the response considerably. For both the coastal and offshore seawater stations, phytoplankton growth was clearly stimulated by N addition in both years and the bacteria responded either to the P, N or C additions (alone or in combination). To conclude, the results from these tropical aquatic systems show that it is possible that phytoplankton and bacteria may compete for a common resource (P) in lakes, but can be limited by different inorganic nutrients in marine waters as well as lakes, suggesting that phytoplankton and bacteria do not necessarily compete for the same growth limiting nutrient in these environments. (C) 2012 Elsevier B.V. All rights reserved.


  • Ecology
  • Alkaline phosphatase
  • Bacterial biomass production
  • Nutrient limitation
  • Phytoplankton biomass production


  • ISSN: 0022-0981
Per Carlsson
E-mail: per [dot] carlsson [at] biol [dot] lu [dot] se

Senior lecturer

Division aquatic ecology

+46 46 222 84 35



Senior lecturer

Aquatic Ecology


Research group

Aquatic Ecology


Marine Pelagic Projects

Doctoral students and postdocs

PhD student, main supervisor

Johanna Stedt