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Volume 16, issue 1
Web Ecol., 16, 89–92, 2016
https://doi.org/10.5194/we-16-89-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Ecology at the Interface

Web Ecol., 16, 89–92, 2016
https://doi.org/10.5194/we-16-89-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Short communication 22 Apr 2016

Short communication | 22 Apr 2016

Effects of warming on a Mediterranean phytoplankton community

Silvia Pulina1, Andreas Brutemark2, Sanna Suikkanen3, Bachisio M. Padedda4, Lorena M. Grubisic5, Cecilia T. Satta4, Tiziana Caddeo4, Pasqualina Farina4, Nicola Sechi4, and Antonella Lugliè4 Silvia Pulina et al.
  • 1Department of Life and Environmental Science, University of Cagliari, Cagliari, 09126, Italy
  • 2Calluna AB, Stockholm, 11321, Sweden
  • 3Marine Research Centre, Finnish Environment Institute, Helsinki, 00560, Finland
  • 4Department of Architecture, Design and Urban Planning, University of Sassari, Sassari, 07100, Italy
  • 5Department of Ecology and Genetics, Limnology and Science for Life Laboratory, Uppsala University, Uppsala, 75236, Sweden

Abstract. Predicting the responses of organisms is a complex challenge especially when water temperature is expected to increase over the coming decades, as a result of global warming. In this work the effects of warming on phytoplankton communities were investigated. An indoor experiment was performed, where water from a Mediterranean lagoon was incubated at different temperatures. Three treatments were applied in triplicate incubation units: the control (11 °C), 3 °C increase (14 °C), and 6 °C increase (17 °C). Our results showed significant effects by warming on phytoplankton. The abundance of relatively smaller taxa (Chlorella sp. and Planktothrix agardhii–rubescens group) increased at 17 °C, whereas the abundance of relatively larger species (Cyclotella sp. and Thalassiosira sp.) decreased, compared with the control. This shift towards smaller taxa resulted in a higher total biomass but lower chlorophyll a concentrations at the highest temperature.

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In this work the effects of warming on phytoplankton communities was investigated. An indoor experiment was performed in which water from a Mediterranean lagoon was incubated at different temperatures. A shift towards smaller taxa resulted in a higher total biomass but lower chlorophyll a concentrations at the highest temperature. This study contributes to the knowledge on the responses of phytoplankton to warming, which is still scarce in Mediterranean marine and brackish environments.
In this work the effects of warming on phytoplankton communities was investigated. An indoor...
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