Biogeographic patterns in marine phytoplankton composition and changes driven by climate change are commonly thought to be driven by oceanographic patterns and their consequences for nutrient supply. This study was conducted to test whether nutrients stress and warming influence phytoplankton species composition. Experiments were performed with a full factorial combination of temperature nutrient stress. Nutrient limitation was manipulated by semi-continuous dilution with fresh medium at three levels. Temperature was also offered at three levels. Within each level of dilution rate, increasing temperatures increased the extent of nitrogen stress. The working hypotheses was that, the combinat
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