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View Resource Abandoned mine drainage stream in productive woods

abandoned mine drainage, Pennsylvania, anthracite mining

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View Resource A male Klug's clearwing butterfly (Dircenna klugii klugii) foraging on a coffee flower (Coffea arabica) in Finca Irlanda, Soconusco region, Chiapas

A male Klug’s clearwing butterfly (Dircenna klugii klugii) foraging on a coffee flower (Coffea arabica) in the Soconusco region of Chiapas, Mexico. Shade-grown coffee certification programs...

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View Resource 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...

View Resource Issues in Ecology, Issue 05: Biotic Invasions

This report is an introduction to exotic species invasions. An exotic species becomes invasive, when it proliferates unchecked across the region in which it was introduced. The transformation from...

View Resource Issues In Ecology, Issue 06: Applying Ecological Principles to the Management of U.S. Forests

In this report forests are presented as very dynamic ecosystems, and processes such as nutrient cycling, nitrogen saturation, sedimentation, erosion, and forest fragmentation are described....

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