Inorganic Nutrient Research Hubbard Brook LTER HBR LTER Climate change Winter climate change Long-term hydrometeorological patterns Future GCM projections.

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Presentation transcript:

Inorganic Nutrient Research Hubbard Brook LTER HBR LTER Climate change Winter climate change Long-term hydrometeorological patterns Future GCM projections Air Pollution Long-term deposition, soil and stream chemistry Future biogeochemical projections Watershed CaSiO 3 treatment Forest Dynamics Forest nutrient limitation Cutting and climatic disturbance Hydropedological templete

Recent Key Findings - Inorganic Nutrients Hubbard Brook LTER HBR LTER Long-term declines in stream NO 3 - are related to decreases in soil N mineralization and nitrification and may be driven by climate effects. Long-term decreases in acid deposition are facilitating soil and stream recovery, and causing dilution of drainage waters. Longer-term response of watershed 1 to CaSiO 3 treatment is recovery of sugar maple productivity, and increases in leaching losses of NO 3 -, DOC and TP.

Syntheses ideas - Inorganic Nutrients Hubbard Brook LTER Current and future hydrochemical response to changing climate Cross-site comparison of N cycling Comparison of biogeochemical experiments HBR LTER