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

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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 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 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

		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

		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

		An oblique aerial view of the Mullica River showing an invasive reed (Phragmites australis) and two species of native grasses (Spartina spp.). In this oblique aerial view of Hog Island in the Mullica River, a common reed (Phragmites australis; in green) is visible. P. australis was first observed spreading rapidly on upper Hog Island in...	You must be logged in to access all resource information.	More Info

		Decomposition and Soil CO2 Emission Students investigate the factors that control the rate at which CO2 is emitted from soil using simple soil chambers and soda lime in a field experiment. Students in small groups design and conduct...		More Info

		Drivers of Avian Local Species Richness: Continental-Scale Gradients, Regional LAndscape, or Local Land Cover? Students use data to test hypotheses on breeding bird species richness. Students will exercise critical thinking skills to interpret data sets and maps. They will then create graphic presentations...		More Info

		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...		More Info

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