Santo Domingo.– Dominican President Leonel Fernandez's third term in office may be his toughest, as an economic downturn in the U.S. threatens a wave of budding prosperity in the country.

The Dominican Republic has been transformed in recent years from a nation of sugar cane fields to one of shopping malls and designer golf courses for tourists –closely linking its economy to the United States.

That shift helped carry Fernandez to victory on Friday. But, he warned on Saturday, economic woes are approaching. "Now we unite as a country, so as a nation we can confront those challenges and obstacles that are upon us," Fernandez said.

Experts predict an economic slowdown could hit the Caribbean nation in coming months –"just in time for the beginning of his new government," said David Lewis, vice president of Washington-based consulting group Manchester Trade Ltd.

Close ties with the United States will likely accelerate that downturn. Americans buy about 80 percent of Dominican exports and have invested heavily in manufacturing and real estate. The U.S. is also a major source of tourists and home to more than 1 million Dominican immigrants, who provide a tenth of the country's gross domestic product through remittances.

A slump in U.S. credit markets, the falling dollar and rising oil prices end a period of worldwide prosperity, according to an economic plan that Fernandez released during the campaign. In the proposal, he suggests refinancing public debt, aiding farmers and investing in alternative fuels.

Fernandez led the country to double-digit growth in 2006 and 2007 after an economic crisis sparked by the 2003 collapse of its central bank brought soaring inflation and undermined the peso.