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Nitrogen Scarcity, Surplus, and Carbon Impacts in Northeastern US Forests

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On Thursday, May 21 @ 11am ET, join us for a virtual scientific seminar by Dr. Christy Goodale, Cornell University.

In temperate forests, scarcity of nitrogen – a vital nutrient – often constrains plant growth, while nitrogen excess causes a host of soil, air, and water pollution problems. Most of these effects hinge on the fate of nitrogen entering terrestrial ecosystems and the capacity of plants and microbes to acquire and retain it. Research insights gained from stable isotope (15N) tracer studies, ecosystem monitoring, and a long-term (2011 – present) N x pH fertilization experiment highlight important roles of seasonal variations in N uptake processes, forest soils as nitrogen sources and sinks, and changes in plant above- and belowground C allocation and ecosystem C storage in response to variations in N availability. These advances in forest carbon-nitrogen biogeochemistry are used to inform both ecosystem theory and the Earth System models used to predict terrestrial carbon sequestration and future climate.

Free and open to all. Registration required via Eventbrite.

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