Beyond looking both ways in our Classroom Activities section, including a free html version and a pdf version free The Science Standards addressed are on each activity page. Resources for Teaching about Biogeochemical Cycles, A collection of resources for teaching about biogeochemical cycles including links. about reform in teaching methods since cumculum reform, resulting in teachers the best ...

Propionate-forming bacteria seem to be abundant in anoxic rice paddy soil, but biogeochemical investigations show that propionate is not a correspondingly important intermediate in carbon flux in this system. Mixed cultures of Opitutus terrae strain PB90-1, a representative propionate-producing bacterium from rice paddy soil, and the hydrogenotrophic Methanospirillum hungatei strain SK maintain...

A biogeochemical model of vegetation using observed climate data predicts the high northern latitude greening trend over the past two decades observed by satellites and a marked setback in this trend after the Mount Pinatubo volcano eruption in 1991. The observed trend toward earlier spring budburst and increased maximum leaf area is produced by the model as a consequence of biogeochemical vege...

Modeling the nitrogen fluxes in the Black Sea using a 3D coupled hydrodynamical-biogeochemical model: transport versus biogeochemical processes, exchanges across the shelf break and comparison of the shelf and deep sea ecodynamics M. Grégoire 2 and J. M. Beckers University of Liège, 1 Mare, B6c, Sart-Tilman, 4000 Liège, Belgium Netherlands Institute of Ecology (NIOO – KNAW), Centre for Estuarin...

Abstract. Location, specific topography, and hydrographic setting together with climate change strong anthropogenic pressure are the main factors shaping biogeochemical functioning thus also ecological status of Baltic Sea. The recent decades have brought significant changes in First, rising nutrient loads from land second half 20th century led to eutrophication spreading hypoxic anoxic areas, ...

Measurement of greenhouse gas (GHG) fluxes between the soil and the atmosphere, in both managed and unmanaged ecosystems, is critical to understanding the biogeochemical drivers of climate change and to the development and evaluation of GHG mitigation strategies based on modulation of landscape management practices. The static chamber-based method described here is based on trapping gases emitt...