Biodiversity and Conservation 9: 215–240, 2000. © 2000 Kluwer Academic Publishers. Printed in the Netherlands. Can botanical collections assist in a National Protected Area Strategy in Guyana? HANS TER STEEGE1;∗, MARION J. JANSEN-JACOBS2 and VIJAY K. DATADIN3 1Tropenbos-Guyana Programme, 12E Garnett Street, Campbellville, Georgetown, Guyana and the Department of Plant Ecology and Evolutionary Biology, Utrecht University, P.O. Box 800.84, 3508 TC, Utrecht, The Netherlands; 2Department of Plant Ecology and Evolutionary Biology, Herbarium Division, Utrecht University, P.O. Box 80102, 3508 TC, Utrecht, The Netherlands; 3 Iwokrama International Centre for Rain Forest Conservation and Development, 67 Bel Air, Georgetown, Guyana; ∗ Author for correspondence (fax: +31-30-2518366; e-mail:
[email protected]) Received 2 March 1999; accepted in revised form 21 June 1999 Abstract. With botanical collections of five key tree taxa an assessment is made of the usefulness of herb- arium collections in a National Protected Areas Strategy in Guyana. Even though botanical collections are often concentrated in a few areas, causing a bias in diversity estimates, the data are useful for the estimation of species richness in large areas (1/10 of the country) and provide information on species distributions. Because of the taxonomic correctness of the names of the specimens, data on endemics is much more reliable than e.g. data in forest inventories. Based on the collections of Licania, Eschweilera, Lecythis, Swartzia, Lauraceae, and Sapotaceae a previous division in seven to eight forest regions is supported. There are significant differences in total species richness, or γ -diversity, among the regions, with the Pakaraima Highlands having the highest γ -diversity.