USGS To Present Diverse Research At ESA Annual Meeting
.... The program has meant restoration of millionsof hectares of land formerly under cultivation, especially in the Great Plains. Drought and other economic pressures havecaused periodic release of some of the CRP land for hay production. USGS hasfound that some species such as the Horned Lark and Lark Bunting ...The Environmental Consequences Of Increasing Food Production
...AO) of the United Nations estimatesthat 93 million hectares of land (an area about twice the size of Spain) willbe converted to agricultural use by 2010 in South America, Africa, and Asia. Even with this increase in the area of land used for agriculture, production ofwheat, rice and maize in developing coun......in forests where there are more tree species in 10 hectares - about 25 acres - than in all of the United States and Canada," she said. "That's a remarkable array of potential timbers, medicines and foods to lose." The total amount of rain forest lost to deforestation may never be known, she said, because more...