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(4 classifications) (27 resources)

Ecological Core Concepts -- Interspecific interactions

Discipline Specific Core Concepts Classifications
Competition (23)
Mutualism, symbiosis, and commensalism (7)
Parasitism and disease (8)
Predation and herbivory (21)

View Resource Mimicry

This laboratory exercise examines the response of native birds to different frequencies of a mimic species while holding the other two parameters constant - the degree of distastefulness and the resemblance of the mimic to the model.


Publisher: EcoEd Digital Library

View Resource Foraging and Flocking Behavior

In this laboratory exercise, the following issues are examined: 1) why neither predators nor prey go extinct when there is a long period of nonrenewal of the prey population 2) the effects of habitat on foraging speed 3) the advantages foragers can gain from experience in foraging 4) the advantage of exclusive use of an area for foragers 5) the effects of food density on foraging speed 6) the...


Publisher: EcoEd Digital Library

View Resource Long-term Response of an Arctic River Community to Phosphorus Fertilization

With this TIEE Data Set, students assess effects of phosphorus addition on algae, moss, mayflies, and arctic grayling fish in the Kuparuk River, in the foothills of the North Slope of Alaska. Data were taken over 15 years at the Arctic Long Term Ecological Research (ARC LTER) site at the Toolik field station. Phosphorus was added to the river as an experiment to study the effects of nutrient...


Publisher: EcoEd Digital Library

View Resource Testing Hypotheses on Plant-herbivore Interactions Using Sawfly Galls on Willows

In this experiment, students observe sawfly galls (Hymenoptera) on willow (Salix) trees to investigate some of the ecological consequences of plant-herbivore relationships. The physical and chemical traits of plants vary due to genes and environmental factors, such as soil moisture, nutrient levels, exposure to pathogens, and exposure to herbivores. These traits can lead to differences in...


Publisher: EcoEd Digital Library

View Resource Effects of Eastern Hemlock (Tsuga canadensis) on the Establishment of Interspecific Seedlings

In this Experiment, students investigate the inhibitory effects of Eastern Hemlock trees on establishment of neighboring woody plants. Some years ago, one of the faculty in the Biology Department at Hope College noticed that fewer seedlings and saplings of broadleaved woody species seemed to grow beneath the canopies of eastern hemlock trees than beneath the canopies of other species on the Hope...


Publisher: EcoEd Digital Library

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