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Ecological Core Concepts -- Communities -- Spatial and temporal dynamics

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		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
		http://tiee.esa.org/vol/v3/experiments/crosstown/abstract.ht...

		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...		More Info
		http://www.esajournals.org/doi/abs/10.1890/04-0043

		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...		More Info
		http://www.esajournals.org/doi/abs/10.1890/02-0183

		An ant (Crematogaster opuntiae) visits an extrafloral nectary of a fishhook barrel cactus (Ferocactus wislizeni). An ant (Crematogaster opuntiae) visits an extrafloral nectary of a fishhook barrel cactus (Ferocactus wislizeni). In many mutualistic species interactions, a suite of species in one guild exchanges...		More Info
		http://www.esajournals.org/doi/abs/10.1890/05-0465

		Biology and Conservation of Loggerhead Sea Turtles--Image 01 of 6 Juvenile loggerhead sea turtle (Caretta caretta) in a plastic pail in South Carolina. Loggerheads are an endangered species, populations of which are declining in part due to human interference with...		More Info

		Biology and Conservation of Loggerhead Sea Turtles--Image 02 of 6 Photo of a hatchling loggerhead sea turtle (Caretta caretta) on a beach in South Carolina. Female loggerheads lay their eggs on land and juveniles, such as the one pictured here, migrate from the...		More Info

		Biology and Conservation of Loggerhead Sea Turtles--Image 03 of 6 Photo of a hatchling loggerhead sea turtle (Caretta caretta) entering the surf on a beach in South Carolina. After hatching, juvenile sea turtles are guided to the ocean by celestial light...		More Info

		Biology and Conservation of Loggerhead Sea Turtles--Image 04 of 6 Photo of a very immature loggerhead sea turtle (Caretta caretta) hatchling emerging from its egg. Photo taken along coastal South Carolina.		More Info

		Biology and Conservation of Loggerhead Sea Turtles--Image 05 of 6 Example of artificial lighting along a beach. Artificial lights inhibit the reproduction of loggerhead sea turtles (Caretta caretta) in two ways. First, adult females tend to avoid laying their eggs...		More Info

		Biology and Conservation of Loggerhead Sea Turtles--Image 06 of 6 Image of a loggerhead sea turtle (Caretta caretta) hatchery in South Carolina. Nests are placed in an area where they are protected in varying degrees from natural or anthropogenic hazards. Efforts...		More Info

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