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- =Ecological Core Concepts -- Interspecific interactions -- Predation and herbivory [X]
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The Insect Predation Game: Evolving Prey Defenses and Predator Responses
In this activity, learn about predator-prey interactions by pretending to be generalist insect predators foraging for three prey species (candy). Three feeding adaptations are used (mandibles, raptorial forelegs, and unmodified legs). Students conduct several simulations, each of which lasts about a minute. After each simulation, prey reproduce and predator numbers are adjusted to reflect...
Publisher: EcoEd Digital Library
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Using Stream Leaf Packs to Explore Community Assembly
In this TIEE experiment, students will explore functional and taxonomic diversity in a stream ecosystem, learn about food web relationships, and learn about the ways in which abiotic and biotic factors determine what organisms are present in a community.
Students will make and install artificial leaf packs in a stream, wait for the leaf packs to be colonized by stream organisms, measure...
Publisher: EcoEd Digital Library
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Foraging behavior of insect pollinators in the presence of ambush predators
In this TIEE experiment, students investigate how ambush predators such as the common ambush bug (Phymata americana) or the common crab spider (Misumena vatia) influence the foraging behavior of insect pollinators on flowers. This project involves an experimental manipulation of predator presence and subsequent pollinator observation over the course of a single or several lab periods. Students...
Publisher: EcoEd Digital Library
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A Case of a Warbler Eating Berries
This is a photographic case study on the Yellow-rumped Warbler. This bird is unusual among warblers in its ability to eat Bayberry seeds. This ability give is a winter food source that minimizes it's need to migrate affecting the way it interacts with its ecosystem. This case explores this aspect of migratory bird biology while developing observational skills and questioning skills in students.
Publisher: EcoEd Digital Library
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Observing and Quantifying Predator-avoidance Behavior: Habitat Shifts by Snails in Response to Predator Cues
In this activity, students conduct an experiment to test a hypothesis about how freshwater snails detect and avoid fish predators using chemical cues and habitat complexity. Students generate a hypothesis, run the experiment, collect data, analyze data, and interpret their results. Instructions are also provided for further thought and discussion on the implications of the students' findings and...
Publisher: EcoEd Digital Library
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