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.

中文翻译：

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变暖对地中海浮游植物群落的影响

摘要。预测生物体的反应是一项复杂的挑战，尤其是在未来几十年由于全球变暖而预计水温会升高的情况下。在这项工作中，调查了变暖对浮游植物群落的影响。进行了一项室内实验，其中来自地中海泻湖的水在不同温度下孵化。三种处理以一式三份的孵育单位进行：对照 (11 °C)、3 °C 升高 (14 °C) 和 6 °C 升高 (17 °C)。我们的结果表明变暖对浮游植物有显着影响。与对照相比，相对较小的分类群（小球藻属和浮游菌属 agardhii-rubescens 组）的丰度在 17 °C 时增加，而相对较大的物种（小环藻属和 Thalassiosira sp.）的丰度下降。