Despite the tight coupling between carbon (C) and nitrogen (N) cycling in terrestrial ecosystems, these two key elemental cycles are often studied separately, by different research groups using different methods and at different study sites. The aim of this session is to bring together scientists representing both fields of biogeochemistry in order to advance our understanding of the interactions between C and N cycling. C and N dynamics are altered in a changing climate through soil warming, changes in root exudates and litter input, changes in local hydrology, and disturbances including permafrost thaw and wildfires. While enhanced N availability may promote the C sink capacity of vegetation, complex interactions between climate, topography, soils, vegetation, and the microbial world will ultimately control the net ecosystem C and N balance in current and future conditions.
In this session, we welcome contributions that integrate both C and N dynamics across a variety of spatial scales, methods, and terrestrial ecosystem types that aim to address the challenges outlined above. Experimental and observational contributions focusing on ecosystem functions and compartments where C and N coupling occurs are encouraged, such as studies on plant-microbe interactions and priming, microbial processes coupling C and N cycles, and lateral transport of C and N to aquatic systems. We also welcome contributions describing new field and remote sensing methods and local and global models.
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