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| | Natural Selection: subject gateway to the natural world |
 | | This resource forms part of the Land Use History of North America, a USGS sponsored programme profiling historical vegetation and land cover patterns. |
 | | This project is the result of a collaboration between the National Herbarium of Ecuador, Herbario QCA (also in Ecuador), Aarhus University in Denmark and Missouri Botanical Garden in America. |
 | | The Americas volume is presented here and contains information on the geography, vegetation, biodiversity, threats and conservation status of "six sites in North America, 20 in Middle America, 46 in South America, and three in the Caribbean". |
| nature.ac.uk /browse/581.9.html (10141 words) |
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