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- =Ecological Core Concepts -- Individuals [X]
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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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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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Metabolic ecology: How do body size and temperature affect nutrient cycling rates?
In this TIEE dataset, students answer the question of whether nutrient cycling (excretion) rates of fish in lakes scale with body size and temperature as predicted by The Metabolic Theory of Ecology.
Students use data on the nitrogen and phosphorus excretion rates of fish to test hypotheses related to metabolic ecology.
Publisher: EcoEd Digital Library
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Are males cheaper than females? Male and female costs of reproduction
In this TIEE experiment, students investigate the costs of reproduction. In dioecious plants, a female's investment in reproduction is typically much greater than a male's, because while both sexes encounter the basic cost to produce a flower, only females have to allocate energy to seeds, exceeding the energy requirements to produce pollen. This 1-2 week field project tests whether the effects of...
Publisher: EcoEd Digital Library
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Egg size plasticity in bean beetles (Callosobruchus maculatus): Does host bean species matter?
In this exercise, students design a series of experiments (1) to test whether female bean beetles adjust the size of their eggs on different host bean species and (2) to determine whether differences in egg size based on host bean species are optimal. Most often, students design experiments in which different females are allowed to lay eggs on different bean species that vary in nutritional...
Publisher: EcoEd Digital Library
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