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Ecological Core Concept is Human impacts -- Biodiversity loss

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		A grey tree frog (Hyla versicolor). A grey tree frog (Hyla versicolor). Amphibian species are declining globally, and pesticides may play a role, but their concentrations are often low in nature. Carbaryl is a common pesticide that can...	You must be logged in to access all resource information.	More Info

		An Assessment of Assemblage Nestedness in Habitat Fragments This experiment illustrates how ecological theory can help conserve native species in a fragmented landscape. It is germane to units on biogeography, human impacts on ecosystems, landscape...		More Info

		Biodiversity Responses across a Gradient of Human Influence To investigate how species, communities, and habitats change over the rural-urban (or pristine to human-dominated) gradient students conduct a series of biological inventories, field measurements,...		More Info

		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...	You must be logged in to access all resource information.	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...	You must be logged in to access all resource information.	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...	You must be logged in to access all resource information.	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.	You must be logged in to access all resource information.	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...	You must be logged in to access all resource information.	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...	You must be logged in to access all resource information.	More Info

		Drought in East Africa These Landsat images show Kenya’s Masai Mara Reserve on December 4, 1994, a year with normal rainfall, and November 27, 2009, a year when the rains failed and a severe drought overtook the land. The...	You must be logged in to access all resource information.	More Info

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