Hydrological control on carbon fluxes in three subarctic micro-catchments

Links between variables such as soil maturity, f1owpaths, water residence time, carbon export and weathering rates need to be further established in order to evaluate the effects of future climatic change on the hydrology and carbon economy of subarctic catchments. Recent studies on post-deglaciation landscape development in the Alaskan Glacier Bay area have suggested that the importance of 1) deep ground water flowpaths and 2) carbonate weathering, decrease with time since deglaciation as soil pans form, vegetation cover increases and soils become depleted in reactive minerals. We present here, detailed water and nutrient mass balances for three subarctic micro-catchments (