Long term monitoring of forested catchments in Québec, Canada
Long term monitoring of forested catchments in Québec, Canada
Previously Published Material: Some data have been published in scientific papers, some are unpublished.
Abstract ID#: 35927
English Abstract:
Forested and aquatic ecosystems are submitted to important environmental changes. While acidic atmospheric deposition of sulfur has significantly increased from the sixties to the eighties and is now declining since, climate has been warming. At the same time, a steep decline in nitrate deposition is now observed in eastern North-America. Separating the effects of these large scale drivers on forest growth and surface water chemistry is not a simple task. Among the calibrated catchments in Quebec, the lake Laflamme catchment is one of the most intensively studied since 1981. Routine measurements of precipitation, throughfall, soil solution and stream chemistry as well as tree growth measurements and forest dynamics are being conducted. In addition, experiments of N addition and soil warming are taking place to assess specifics impacts of environmental changes on tree growth and soil chemistry. The long term data gathered at the site as well as the result of the ongoing experiment will be used to portray the impact of environmental changes on forested ecosystems and surface water chemistry.