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Abstract Detail


Ecological Section

Devall, Margaret [1], Thien, Leonard [2].

Inland occurrence of the beach plant Ipomoea pes-caprae (Convolvulaceae) around Lake Nicaragua.

Ipomoea pes-caprae (L.) Roth (railroad vine) is a pantropical, clonal beach plant that forms large patches just above the high tide line on coastal beaches and dunes throughout tropical and subtropical areas of the world. The species is often mentioned as a component of the strand vegetation. In spite of its wide distribution, only rare occurrences of  I. pes-caprae have been documented in inland habitats. Here we report on an extensive population of  I. pes-caprae growing on the shores of Lake Nicaragua in the interior of Nicaragua. Thick mats of the species occur on the lake shore in the area of Granada, a colonial city, and the stem density there is greater than that at four locations around the Gulf of Mexico. Patches of  I. pes-caprae occur on islands in the lake and near coastal towns. Lake Nicaragua was never connected to the Pacific Ocean and the San Juan River flows from the lake to the Caribbean. Perhaps seeds of  I. pes-caprae were inadvertently carried to Granada on ships that travelled up the San Juan River during the 100 years after the citys founding, before the river became impassible to large ships.


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1 - U.S. Forest Service, Center for Bottomland Hardwoods Research, P.O. Box 227, Stoneville, Mississippi, 38776, US
2 - Tulane University, Cell & Molecular Biology Department, 6823 St Charles Avenue, New Orleans, Louisiana, 70118, USA

Keywords:
railroad vine
beach plant
strand vegetation.

Presentation Type: Oral Paper:Papers for Sections
Session: CP38
Location: Williford B/Hilton
Date: Tuesday, July 10th, 2007
Time: 3:30 PM
Number: CP38001
Abstract ID:1465


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