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View Resource Plant communities growing on young and old lava flows in Hawaii.

This photograph visually illustrates the contrast between plant communities growing on young and old lava flows in Hawaii. In the foreground, a young lava flow is colonized by crusts of nitrogen...

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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....

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 03: Non Point Pollution of Surface Waters

This report addresses pollution of aquatic ecosystems that originate from multiple unidentified sources or non point sources. Non point sources of phosphorus and nitrogen are of concern as they...

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