Research Output

Response of temperate microplankton communities to N:Si ratio perturbation

  In order to study the effect of the nitrogen:silicon (N:Si) ratio on temperate microplankton food webs, mesocosm experiments were conducted in Trondheim (Norway) using two different ratios (molar ratios of 1:1 and 4:1). With the exception of diatoms, the increase in abundance of all microbial groups [phototrophic nanoflagellates, autotrophic dinoflagellates, bacteria, heterotrophic nanoflagellates (HNAN), heterotrophic microflagellates and ciliates] was significantly greater in the high N:Si treatment. Midway through the experiment, HNAN biovolume exceeded that of bacteria in the high N:Si treatment, indicating strong top-down grazing control. Heterotrophic microflagellate biovolume exceeded ciliate biovolume under both nutrient regimes. However, hetero-trophic plankton failed to respond rapidly to increased diatom biomass. The heterotrophic:auto-trophic biovolume ratio remained

  • Type:

    Article

  • Date:

    01 December 2003

  • Publication Status:

    Published

  • Publisher

    Oxford University Press (OUP)

  • DOI:

    10.1093/plankt/fbg109

  • ISSN:

    1464-3774

  • Library of Congress:

    QH301 Biology

  • Dewey Decimal Classification:

    577.7 Marine ecology

  • Funders:

    European Commission

Citation

Roberts, E. C., Davidson, K., & Gilpin, L. (2003). Response of temperate microplankton communities to N:Si ratio perturbation. Journal of plankton research, 25(12), (1485-1495). ISSN 1464-3774

Authors

Keywords

Ecology; Aquatic Science; Ecology, Evolution, Behavior and Systematics

Monthly Views:

Available Documents