Andreas is a PhD student at UiT- the Arctic University of Norway at the department of Arctic and Marine Biology. He has a background in ecology with special focus on vegetation ecology in the Arctic and has also worked with climate warming-related plant physiology. His PhD focusses on autumn leaf senescence in Arctic tundra plants, the timing of which has important implications for both food-web dynamics and climate feedbacks. Through his work, he hopes to increase the currently limited understanding of environmental and physiological drivers of plant senescence in tundra plants. PhenoCam and UAV-based photogrammetry is integrated with traditional field methods in field experiments and surveys in natural gradients at his field site in Adventdalen, Svalbard.