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Core Concepts is Ecological Core Concepts -- Communities -- Species composition, abundance, and diversity

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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.		More Info
		http://tiee.esa.org/vol/v1/data_sets/cowbird/cowbird.html

		Issues in Ecology, Issue 04: Biodiversity and Ecosystem Functioning In this report, biodiversity and its relevance to the ecosystems that support humanity is discussed. Ecosystem functioning is defined as the collective activities of all biota within an ecosystem...		More Info

		Issues in Ecology, Issue 11: The Role of Nearshore Ecosystems as Fish and Shellfish Nurseries This report defines the role of nearshore ecosystems, such as wetlands and seagrass meadows, as nurseries for populations of fish and shellfish that may be of commercial value to humans. The...		More Info

		Life Under Your Feet: Measuring Soil Invertebrate Diversity This Experiment, students collect soil samples to test hypotheses about the diversity of invertebrates in soil in different places or under different conditions. Students generate their own...		More Info
		http://tiee.esa.org/vol/v3/experiments/soil/abstract.html

		Low-intensity fires increase cover and diversity in a pine understory This photograph depicts a pine understory following a low-intensity fire. Immediately following a surface fire, the ground is black and covered with ash, with a lifeless look. But this condition is...		More Info

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