Seasonal changes in trophic interactions: physiological mechanisms and consequences for energy and contaminant flow in a Canadian Shield lake

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Winter periods are critical times of the year for aquatic animals. Climate change is already dampening winter conditions in temperate latitudes. Given this, it is surprising that seasonal changes in trophic interactions, especially during winter, are poorly studied. The long term goal of my research is to anticipate how climate change will affect aquatic animals and ecosystems by studying the physiological mechanisms and ecosystem-level consequences (for energy and contaminant flow) of seasonal variation in trophic interactions. Over the next 5 years, I will conduct seasonal sampling in a well-studied lake (Lake Opeongo, Ontario) during summer, autumn, winter and spring to address 3 objectives.