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Ecological Core Concept is Communities

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		A community of wildflowers growing in a restored prairie in southwestern Wisconsin. A community of wildflowers growing in a restored prairie in southwestern Wisconsin. The community pictured was open to foraging by meadow voles (Microtus pennsylvanicus), resulting in vegetation...	You must be logged in to access all resource information.	More Info

		A coral-dwelling goby (Gobiodon histrio), one of several species that coexists among coral by means of a competitive lottery. Habitat space is a limiting resource for coral-dwelling gobies. The species pictured, Gobiodon histrio, coexists with an ecologically similar species in the same genus, Gobiodon erythrospilus, by...	You must be logged in to access all resource information.	More Info

		A Crosstown Walk to Assess Environmental Changes Along an Urban Socioeconomic Gradient In this Experiment, students examine the relationships between demographic factors (economic, social, etc.) and environmental quality. Students observe and collect data on the differences in...		More Info

		A misty rain forest canopy in central Amazonia. The central Amazon Basin is home to some of the most biologically diverse forests in the world. These rain forests are being reduced and fragmented at a fast rate (as of 2004, about 24 million...	You must be logged in to access all resource information.	More Info

		A mountain scene in Yukon, Alaska depicts how vegetation changes from the base to the top of the mountain due to differences in elevation and topograp A mountain scene in Yukon, Alaska depicts how vegetation changes from the base to the top of the mountain due to differences in elevation and topography. The base of the mountain is vegetated by...	You must be logged in to access all resource information.	More Info

		A remnant oak-savannah ecosystem, rich in native plant species and also heavily invaded by exotics. An abandoned 19th century barn is located within a remnant oak-savannah ecosystem in southwestern British Columbia, Canada. The herbaceous vegetation in the foreground includes the pink-flowered...	You must be logged in to access all resource information.	More Info

		A Volvox colony from a freshwater lake in British Columbia, Canada. A Volvox colony from a freshwater lake in British Columbia, Canada. Volvox is a genus of green algae that forms colonies of numerous cells. A recent survey of lakes in British Columbia found that...	You must be logged in to access all resource information.	More Info

		Abandoned mine drainage stream in productive woods abandoned mine drainage, Pennsylvania, anthracite mining	You must be logged in to access all resource information.	More Info

		Aerial view of forest fire in pine forest in the Everglades National Park. Fire is a natural factor that maintains the pinelands and other natural communities in South Florida. The frequency of these fires is influenced by large-scale climate cycles, particularly El Nino...	You must be logged in to access all resource information.	More Info

		Aerial view of the eastern border of the Parque Nacional Soberania in central Panama following a fire. An aerial view of the eastern border of the Parque Nacional Soberania in central Panama following a fire. The park borders on an extensive monoculture of the invasive grass Saccharum spontaneum. The...	You must be logged in to access all resource information.	More Info

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