biodiversity - ESA
biodiversity. For example, efforts to eliminate coyotes in the canyons of southern California are linked to decreases in song bird populations in the area. As coyote populations were reduced, the populations of their prey, primarily raccoons, increased. Since raccoons eat bird eggs, fewer coyotes led to more
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l ssues in Eco Published by the Ecological Society of ...
www.esa.orgPublished by the Ecological Society of America Number 2, Spring 1997 Ecosystem Services: Benefits Supplied to Human Societies by Natural Ecosystems
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www.esa.orgFresh water is vital to human life and economic well-being, and societies extract vast quantities of water from rivers, lakes, wetlands, and underground aquifers …
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ECOSYSTEM SERVICES
www.esa.org• Eighty percent of the world’s population relies upon natural medicinal products. Of the top 150 prescription drugs used in the U.S., 118 originate from natural sources: 74 percent from plants, 18 percent from fungi, 5 percent from bacteria, and 3 percent from one vertebrate (snake species).
FIRE ECOLOGY - ESA
www.esa.orgFIRE ECOLOGY Perhaps the image most often associated with wildland fire is one of destruction. While it is true that fire has a great potential for the destruction of homes, wildlife, and even human life, fire is just one of many natural forces within ecosystems. Fire Behavior Fire behavior is most often described by intensity and spread.
CARBON SEQUESTRATION IN SOILS Over the past 150 …
www.esa.org• Impacts of land use and land management on soil carbon sequestration and ways to increase the storage time of carbon in the soil. • The underlying mechanisms controlling soil structure and the storage of carbon. These include various chemical, physical, biological, mineralogical, and ecological processes.
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