[1] We sought to determine the effect of elevated atmospheric CO2 on mineral weathering reactions in midlatitude carbonate-bearing forest soils of differing nutrient availability. Increased plant growth and soil respiration under elevated atmospheric CO2 suggest increased rates of carbon cycling, which may affect mineral weathering. A randomized complete block experiment was conducted, where as...

Ahmed Douaik1, Marc van Meirvenne2 and Tibor Tóth3,4 1Research Unit on Environment and Conservation of Natural Resources, National Institute of Agricultural Research (INRA), Rabat, 2Department of Soil Management, Ghent University, Ghent, 3Department of Soil Science, Research Institute for Soil Science and Agricultural Chemistry, Budapest, 4Rural, Water and Ecosystem Resources Unit, Institute fo...

Acidic deposition leads to the acidification of waters and accelerated leaching and depletion of soil base cations. The Bear Brook Watershed in Maine has used whole-watershed chemical manipulations to study the effects of elevated N and S on forest ecosystem function on a decadal time scale. The objectives of this study were to define the chemical and physical characteristics of soils in both t...

Introduction: The initial in-situ chemical analysis of the four soil samples delivered to the Wet Chemistry Laboratory (WCL) provided concentrations of the soluble ionic species in the soil along with the pH and conductivity. Even though at first the results appeared to present a simple picture of the soluble soil chemistry , it has become clearly evident that the analyses were complicated by a...

In forested ecosystems, water soluble organics play an important role in soil processes including carbon and nutrient turnover, microbial activity and pedogenesis. The quantity and quality (i.e., chemistry) of these materials is sensitive to land management practices. Monitoring alterations in the chemistry of water soluble orgat~ics resulting from land management practices is difficult because...

Tropical forests are renowned for their biological diversity, but also harbor variable combinations of soil age, chemistry and susceptibility to erosion or tectonic uplift. Here we contend that the combined effects of this biotic and abiotic diversity promote exceptional biogeochemical heterogeneity at multiple scales. At local levels, high plant diversity creates variation in chemical and stru...

Western North American landscapes are rapidly being transformed by forest die-off caused by mountain pine beetle (Dendroctonus ponderosae), with implications for plant and soil communities. The mechanisms that drive changes in soil community structure, particularly for the highly prevalent ectomycorrhizal fungi in pine forests, are complex and intertwined. Critical to enhancing understanding wi...

B. B. Basak, Sharmistha Pal and S. C. Datta* Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi 110 012, India Present address: Directorate of Medicinal and Aromatic Plant Research, Boriavi, Anand 387 310, India Present address: Central Soil and Water Conservation Research and Training Institute, Research Centre, Madhya Marg, Chandigarh 160 01...

Prescribed burning is a common management tool used in grassland restorations to improve conditions for plant growth. At a grassland restoration in Maryland, we studied the impacts of sequential prescribed burning on near-surface soil chemistry of a highly weathered soil. We hypothesized that soil pH and base cations in the surface soil would increase in the nutrient-poor soils after the burnin...