In this TIEE data set, students answer the question of what influences flux of nitrogen from catchments underlain by discontinuous permafrost.
Students work with a large dataset describing nitrogen dynamics in the Caribou-Poker Creeks Research Watersheds, small watersheds in the boreal forest that are underlain with various extents of permafrost cover. Students use spreadsheet and graphics...
The purpose of this report is to distill advances in the science of air pollution thresholds and to describe their use to assess, protect and manage the nation’s ecosystems and the vital services they provide. We focus here on the environmental impacts of nitrogen, sulfur, and mercury and refer to connections to climate change. The discussion draws on the published research of hundreds o...
Students bring prior knowledge about science to our courses, yet sometimes their information is inaccurate.The Beedlow et al. article [attached] provides a foundation for addressing several incomplete, naïve, or erroneous ideas that have been identified in students’ thinking about the carbon cycle (Carlsson 2002; Ebert-May et al. 2003), what scientists know about the relationship between plant ...
It is not surprising that humans have profoundly altered the global nitrogen (N) cycle in an effort to feed 7 billion people, because nitrogen is an essential plant and animal nutrient. Food and energy production from agriculture, combined with industrial and energy sources, have more than doubled the amount of reactive nitrogen circulating annually on land. Humanity has disrupted the nitrogen...
This January 2012 press release introduces and describes the significance of issue #15 of ESA's Issues in Ecology series, "Excess Nitrogen in the U.S. Environment: Trends, Risks, and Solutions."
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