In biology, an edge effect is the observed increase in the number of different species along the margins of two contrasting environments in an ecosystem, a term that is commonly used in conjunction with the boundary between natural habitats, especially forests, and disturbed or developed land. This category houses sites in which this is a chief topic.
 
 
Recommended Resources
Environment America is a non-profit organization which provides research and advocacy on issues such as edge effect and other related topics.
http://www.environmentamerica.org/
Urban Edge is a non-profit organization which provides information on a number of environmentally sound initiatives for new or renovated spaces in urban areas.
http://www.urbanedge.org/
Urban Habitats is a non-profit organization which focuses on current research on the biology of urban areas, specifically the edge effect of urban areas, and restoration of urban habitats.
http://www.urbanhabitats.org/