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Forest Ecosystem Responses to Chronic Nitrogen Additions

In this activity, students work with data collected during 15 years as part of a long-term research project at Harvard Forest. Students analyze the data to address the question, "How have stands of pine and hardwood forest responded to long-term nitrogen fertilization?" Students address the question using data on several ecosystem characteristics and processes: net primary productivity, tree photosynthetic capacity, soil respiration, and soil microbial biomass.
Cumulative Rating: This resource has a 4.5 star rating (based on 2 responses)
Primary or BEN resource type
Discipline Specific Core Concepts
Life science discipline (subject)
Keywords nitrogen, nitrogen deposition, soil respiration, photosynthesis, primary production, NPP, hardwood, pine, soil microbes, Harvard Forest, long term ecological research, LTER
Key taxa American beech, Fagus grandifolia, red maple, Acer rubrum, Betula lenta, black birch, Quercus rubra, red oak, Quercus velutina, black oak, red pine, P
Intended End User Role
Educational Language
Pedagogical Use Description This activity can be used to teach students about the effects of long-term nitrogen deposition on forest ecosystems. It provides background information on nitrogen deposition and the research project that generated the data. There are complete instructions that guide students through the data analysis as well as guidelines for teachers on how the activity can be used and adapted. The activity incorporates active learning methods to engage students in their own learning process. Open-ended questions, synthesis activities and criteria for student evaluation are included.
Primary Author Controlled Name
Primary Author Affiliation Department of Natural Resources, University of New Hampshire
Primary Author email
Rights Author retains copyright
Date Of Record Submission 2007-09-24

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