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[ID: 164] What is the effect of climate change on water quality in boreal and temperate catchments? Studying water transit times in long time-series and their coupling to biogeochemical processes

PI: Andrés Peralta Tapia

In this project, we will have the unique opportunity to integrate state-of-the-art estimates of catchment transit time with a wealth of existing and ongoing stream monitoring data to determine how hydrological transit time variation shape stream biogeochemical patterns within drainage networks. The combination of hydrological modeling, stream chemistry monitoring, and isotopic analysis will provide a powerful opportunity to advance our understanding of how catchments function as biogeochemical units.

Transit timeStable isotopesWater qualityBiogeochemistryClimate change

[ID: 145] Hydrological Connectivity: Quantifying a key to surface water chemistry in future climates

PI: Thomas Grabbs

Predicting the terrestrial inputs to surface waters requires great chemical and biological insight, but incorrect assumptions about hydrology will confound the most sophisticated biogeochemical understanding. The project will develop the potential of RZ connectivity to explain terrestrial and aquatic linkages by developing a riparian observatory to test the hypothesis that flow-related dynamics in three dimensions of RZ connectivity influence water chemistry as exemplified by aquatic C. The informed sampling of the riparian zone hydrology and hydrochemistry will be of great value to a research community that is increasingly looking to the RZ for explanations of how catchment changes are linked to water quality. The project will also improve our ability to predict how climate change will effect forested boreal waters where DOC is a key chemical constituent. Beyond the specific insights of relevance to Fennoscandian surface waters, the use of the RO to bring process-level observations and understanding to bear at the landscape scale will hopefully be useful to researchers working in other landscapes with other issues.

Biogeochemistryriparian zoneconnectivity

[ID: 138] Mire Chronosequence Project

PI: Jacob Smeds

Inventory of mercury in peatlands of different ages, ranging from 100 to 8000 years of age. Surface peat will be in focus and the accumulation rate of mercury in the top 50 centimeters.