Marine Biology

, Volume 159, Issue 11, pp 2491–2501

Spring phenological responses of marine and freshwater plankton to changing temperature and light conditions

Authors

    • Helmholtz Centre for Ocean Research Kiel (GEOMAR)
    • Department of Systems EcologyStockholm University
  • Stella A. Berger
    • Department of Biology IILudwig-Maximilians-University Munich
    • Department of BiologyUniversity of Bergen
    • Skidaway Institute of Oceanography
  • Aleksandra Lewandowska
    • Helmholtz Centre for Ocean Research Kiel (GEOMAR)
  • Nicole Aberle
    • Biologische Anstalt HelgolandAlfred-Wegener Institute for Polar and Marine Research
  • Kathrin Lengfellner
    • Helmholtz Centre for Ocean Research Kiel (GEOMAR)
    • Department of Ecology and Environmental ScienceUmeå University
  • Ulrich Sommer
    • Helmholtz Centre for Ocean Research Kiel (GEOMAR)
  • Sebastian Diehl
    • Department of Biology IILudwig-Maximilians-University Munich
    • Department of Ecology and Environmental ScienceUmeå University
Original Paper

DOI: 10.1007/s00227-012-1964-z

Cite this article as:
Winder, M., Berger, S.A., Lewandowska, A. et al. Mar Biol (2012) 159: 2491. doi:10.1007/s00227-012-1964-z

Abstract

Shifts in the timing and magnitude of the spring plankton bloom in response to climate change have been observed across a wide range of aquatic systems. We used meta-analysis to investigate phenological responses of marine and freshwater plankton communities in mesocosms subjected to experimental manipulations of temperature and light intensity. Systems differed with respect to the dominant mesozooplankton (copepods in seawater and daphnids in freshwater). Higher water temperatures advanced the bloom timing of most functional plankton groups in both marine and freshwater systems. In contrast to timing, responses of bloom magnitudes were more variable among taxa and systems and were influenced by light intensity and trophic interactions. Increased light levels increased the magnitude of the spring peaks of most phytoplankton taxa and of total phytoplankton biomass. Intensified size-selective grazing of copepods in warming scenarios affected phytoplankton size structure and lowered intermediate (20–200 μm)-sized phytoplankton in marine systems. In contrast, plankton peak magnitudes in freshwater systems were unaffected by temperature, but decreased at lower light intensities, suggesting that filter feeding daphnids are sensitive to changes in algal carrying capacity as mediated by light supply. Our analysis confirms the general shift toward earlier blooms at increased temperature in both marine and freshwater systems and supports predictions that effects of climate change on plankton production will vary among sites, depending on resource limitation and species composition.

Copyright information

© Springer-Verlag 2012