Effects of warming on a Mediterranean phytoplankton community

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<p><strong>Abstract.</strong> 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<span class="thinspace"></span>°C), 3<span class="thinspace"></span>°C increase (14<span class="thinspace"></span>°C), and 6<span class="thinspace"></span>°C increase (17<span class="thinspace"></span>°C). Our results showed significant effects by warming on phytoplankton. The abundance of relatively smaller taxa (<i>Chlorella</i> sp. and <i>Planktothrix agardhii–rubescens</i> group) increased at 17<span class="thinspace"></span>°C, whereas the abundance of relatively larger species (<i>Cyclotella</i> sp. and <i>Thalassiosira</i> sp.) decreased, compared with the control. This shift towards smaller taxa resulted in a higher total biomass but lower chlorophyll <i>a</i> concentrations at the highest temperature.</p>




Pulina, S., Brutemark, A., Suikkanen, S., Padedda, B. M., Grubisic, L. M., Satta, C. T., … Lugliè, A. (2016). Effects of warming on a Mediterranean phytoplankton community. Web Ecology, 16(1), 89–92. https://doi.org/10.5194/we-16-89-2016

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