Ivan J. Fernandez – författare

The Bear Brook Watershed in Maine is a long-term, paired watershed acidification study in northern New England. The West Bear watershed receives chronically elevated N and S amendments, and the East Bear watershed serves as a reference. The programme of research integrates studies of biogeochemical responses of streams, soils, and vegetation. Intensive hydrogeochemical measurements over the past decade provide for reasonably accurate measures of whole-watershed chemical budgets. The chapters in this book document atmospheric inputs of chemicals and water, internal cycling, transformation, and export of measured constituents. The research provides insights into ecosystem processes that govern ongoing N saturation, S retention and release, AI and P mobilization, and soil base cation depletion. This volume should of interest to researchers, managers, and policymakers concerned with the effects of air pollution on forested ecosystems.

The Bear Brook Watershed in Maine (BBWM) is a long-term, whole-watershed study examining the effects of experimentally elevated N and S deposition on a treated watershed, in comparison to the adjacent reference watershed.

The Bear Brook Watershed in Maine (BBWM) is a long-term, whole-watershed study examining the effects of experimentally elevated N and S deposition on a treated watershed, in comparison to the adjacent reference watershed. The study is in a northern New England, USA, forested ecosystem, and focuses on soil and stream hydrological and biogeochemical processes, and chemical responses of vegetation. Relative to the reference watershed, the treated ecosystem has migrated biogeochemically towards N saturation, and soil and stream acidification. Some of the responses to N amendments were not expected nor predicted by available models.