<abstract xmlns="http://www.w3.org/1999/xhtml">

The structure of plankton in a lowland river was studied with a particular focus on autotrophic as well as heterotrophic picoplankton cells. Water samples were collected in the middle, meridional section of the Warta River in 2005. Heterotrophic picoplankton (HPP) were represented by bacteria varying in size and form, but mainly by cocci and rods. HPP abundance ranged from 3.5 × 106 to 9.5 × 106 cells ml-1. Autotrophic picoplankton (APP) densities were considerably lower and ranged from 1.2 × 103 to 92 × 103 cells ml-1. They were represented by prokaryotes (picocyanobacteria) and eukaryotes (small chlorophytes). Both components occurred together but eukaryotic APP usually prevailed in terms of biomass. In terms of biomass, APP seemed to play a minor role in this ecosystem in comparison with heterotrophic picoplankton.
</abstract>

The structure of plankton in a lowland river was studied with a particular focus on autotrophic as well as heterotrophic picoplankton cells. Water samples were collected in the middle, meridional section of the Warta River in 2005. Heterotrophic picoplankton (HPP) were represented by bacteria varying in size and form, but mainly by cocci and rods. HPP abundance ranged from 3.5 × 106 to 9.5 × 106 cells ml-1. Autotrophic picoplankton (APP) densities were considerably lower and ranged from 1.2 × 103 to 92 × 103 cells ml-1. They were represented by prokaryotes (picocyanobacteria) and eukaryotes (small chlorophytes). Both components occurred together but eukaryotic APP usually prevailed in terms of biomass. In terms of biomass, APP seemed to play a minor role in this ecosystem in comparison with heterotrophic picoplankton.

Auto- and heterotrophic picoplankton in a lowland river (Warta River, Poland)

Oceanological and Hydrobiological Studies

{"article-title":"Auto- and heterotrophic picoplankton in a lowland river (Warta River, Poland)"}

The structure of plankton in a lowland river was studied with a particular focus on autotrophic as well as heterotrophic picoplankton cells. Water samples were...

Auto- and heterotrophic picoplankton in a lowland river (Warta River, Poland)

Publié en ligne: 08 avr. 2010

Pages: 137 - 146

DOI: https://doi.org/10.2478/v10009-010-0013-9

Mots clés
bacteria, picocyanobacteria, picoeukaryotes, Warta River

This content is open access.

Auto- and heterotrophic picoplankton in a lowland river (Warta River, Poland)

Publié en ligne: 08 avr. 2010

Pages: 137 - 146

DOI: https://doi.org/10.2478/v10009-010-0013-9

Mots clésbacteria, picocyanobacteria, picoeukaryotes, Warta River

This content is open access.

Mots clés
bacteria, picocyanobacteria, picoeukaryotes, Warta River