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Tropical dry forests in New Caledonia
Authors:Thomas W Gillespie  Tanquy Jaffré
Institution:(1) Conservation International, 2011 Crystal Dr. Ste 500, Arlington, VA 22202, USA;(2) NatureServe, Arlington, VA 22209, USA;(3) World Agroforestry Center (ICRAF), University of the Philippines Los Ba?os, Laguna, 4031, Philippines;(4) School of Geography and Environmental Studies, University of Tasmania, Hobart, TAS, 7001, Australia;(5) National Fish and Wildlife Foundation, Washington, DC 20005, USA
Abstract:Tropical dry forest is the most endangered major vegetation type in the New Caledonia biodiversity hotspot. Vegetation surveys following a transect method used by Gentry were undertaken in two tropical dry forest sites, Ouen-Toro and Pindai, in order to compare species richness, floristic composition, and structure. Pindai contained significantly higher species richness than Ouen-Toro, although there was little difference in forest structure. Tropical dry forest sites in New Caledonia were compared to seven other biodiversity hotspots with tropical dry forest where Gentry's transect method was employed. New Caledonia and other tropical dry forests on islands contain significantly lower species richness than mainland tropical dry forests in biodiversity hotspots. However, New Caledonia contained the highest number of threatened species based on IUCN global conservation categories. Tropical dry forest in New Caledonia appears to be the world's most endangered tropical dry forest based on the extent of forest, number of reserves, and threatened species. Management of tropical dry forests on private and community lands is absolutely imperative to the long-term persistence of this ecosystem.
Keywords:Biodiversity hotspots  New Caledonia  Species richness  Threatened species  Tropical dry forests
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