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Do Antbirds Help or Hinder Army Ants?
In this activity, students examine the nature of the interaction between army ants and ant-following birds. Ant-following birds benefit from the relationship by staying just ahead of the ants and capturing prey animals that are disturbed by the ants. While early studies suggested that the birds' foraging might in turn benefit the ants, it is possible that the birds remove prey that the ants would...
Publisher: EcoEd Digital Library
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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...
Publisher: EcoEd Digital Library
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Impact of Cowbird Brood Parasitism on an Avian Community
This data set can be used to determine the effect cowbird brood parasitism has on a songbird population. It includes notes for students as well as instructions for faculty.
Publisher: EcoEd Digital Library
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Hubbard Brook Streamflow Response to Deforestation
This teaching activity explores what the short- and long-term effects of a whole-watershed deforestation experiment are on streamflow. Students can use an MS Excel file or hard copy of data to graph short- and long-term streamflow response to a whole-watershed manipulation. Students can then compare results to baseline data, draw conclusions about hypotheses, and consider implications of...
Publisher: EcoEd Digital Library
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Energy Balance and Trophic Status in Fish
In this activity, students work with a dataset to investigate energy balance in animals that have different feeding behaviors (diurnal/nocturnal) and diets (e.g., carnivore/detritivore).
Publisher: EcoEd Digital Library
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