Lesser Antillean dry forests

The primary islands in this ecoregion with drye forests are Guadeloupe, Dominica, Martinique, Saint Lucia, Saint Vincent and the Grenadines, and Grenada. The islands are part of a volcanic arc; their interiors generally have mountainous highlands that catch more rainfall, and thus support moist forests of the Windward Islands moist forests ecoregion. The largest area of dry forests on the islands is on Saint Lucia, where the dry forests ring the coast to about 3 km into the interior, where higher elevations grade into moist forest. The same pattern holds on the island of Grenada. On the islands of Saint Vincent and Martinique, the dry forests occur in the thin transition band between the coastal dry shrubland and the upland moist forest.^[2]

The climate of the ecoregion is Tropical rainforest climate (Köppen climate classification (Af)). This climate is characterized as hot, humid, and having at least 60 mm of precipitation every month.^[5][6] Precipitation is slightly higher than that of the coasts, which range from 1,000 mm/year on Dominica to 1,600 mm/year on St. Vincent.^[4]

The dry forest ecoregion is 35% closed canopy, 20% open forest, 15% built-up urban area, 10% in agricultural use and the remainder in shrubs or open water.^[3] Characteristic tree species of the dry forest include those of genus Didymopanax and Charianthus. Mosses and ferns are common. The soils are often disturbed by past agricultural use.^[4]