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PDF Available Here Edinburgh Research Explorer A checklist of the vascular plants of the lowland savannas of Belize, Central America Citation for published version: Goodwin, ZA, Lopez, GN, Stuart, N, Bridgewater, SGM, Haston, EM, Cameron, ID, Michelakis, D, Ratter, JA, Furley, PA, Kay, E, Whitefoord, C, Solomon, J, Lloyd, AJ & Harris, DJ 2013, 'A checklist of the vascular plants of the lowland savannas of Belize, Central America', Phytotaxa, vol. 101, no. 1, pp. 1-119. https://doi.org/10.11646/phytotaxa.101.1 Digital Object Identifier (DOI): 10.11646/phytotaxa.101.1 Link: Link to publication record in Edinburgh Research Explorer Document Version: Publisher's PDF, also known as Version of record Published In: Phytotaxa Publisher Rights Statement: This is an Open-Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly cited. General rights Copyright for the publications made accessible via the Edinburgh Research Explorer is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights. Take down policy The University of Edinburgh has made every reasonable effort to ensure that Edinburgh Research Explorer content complies with UK legislation. If you believe that the public display of this file breaches copyright please contact [email protected] providing details, and we will remove access to the work immediately and investigate your claim. Download date: 07. Oct. 2021 Phytotaxa 101 (1): 1–119 (2013) ISSN 1179-3155 (print edition) www.mapress.com/phytotaxa/ PHYTOTAXA Copyright © 2013 Magnolia Press Monograph ISSN 1179-3163 (online edition) http://dx.doi.org/10.11646/phytotaxa.101.1.1 PHYTOTAXA 101 A checklist of the vascular plants of the lowland savannas of Belize, Central America ZOË A. GOODWIN1, GERMAN N. LOPEZ2, NEIL STUART3, SAMUEL G.M. BRIDGEWATER1, ELSPETH M. HASTON1, IAIN D. CAMERON3, DIMITRIS MICHELAKIS3, JAMES A. RATTER1, PETER A. FURLEY3, ELMA KAY2, CAROLINE WHITEFOORD4, JAMES SOLOMON5, ADAM J. LLOYD6 & DAVID J. HARRIS1,7 1 Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh, EH3 5LR, Scotland, UK; [email protected] 2 Environmental Research Institute, University of Belize, Belmopan, Belize; [email protected] 3 Institute of Geography, School of GeoSciences, The University of Edinburgh, Drummond Street, Edinburgh, EH8 9XP, Scotland; UK; [email protected] 4 Natural History Museum, Cromwell Road, London, SW7 5BD, UK; [email protected] 5 Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri, 63166-0299, U.S.A.; [email protected] 6 Spatial Data Solutions, 139 Front Street, Punta Gorda, Belize; [email protected] 7 Author for correspondence Magnolia Press Auckland, New Zealand Accepted by Alexandre Monro: 17 Apr. 2013; published: 27 May 2013 Licensed under a Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0 Zoë A. Goodwin et al. A checklist of the vascular plants of the lowland savannas of Belize, Central America (Phytotaxa 101) 119 pp.; 30 cm. 27 May 2013 ISBN 978-1-77557-182-7 (paperback) ISBN 978-1-77557-183-4 (Online edition) FIRST PUBLISHED IN 2013 BY Magnolia Press P.O. Box 41-383 Auckland 1346 New Zealand e-mail: [email protected] http://www.mapress.com/phytotaxa/ © 2013 Magnolia Press ISSN 1179-3155 (Print edition) ISSN 1179-3163 (Online edition) 2 • Phytotaxa 101 (1) © 2013 Magnolia Press GOODWIN ET AL. Table of contents Abstract ............................................................................................................................................................................... 3 Introduction .......................................................................................................................................................................... 3 Results ............................................................................................................................................................................... 13 Discussion ......................................................................................................................................................................... 16 Checklist ............................................................................................................................................................................ 18 References ....................................................................................................................................................................... 116 Abstract Lowland savannas, covering an area of 2,342 km2, form the third largest ecosystem in Belize yet are unevenly and therefore poorly represented in the country’s protected area system. Based on more than 5,700 herbarium collections, a checklist of 957 species of vascular plants is presented for this ecosystem representing ca. 28% of the Belizean flora, of which 54 species are new records for the country. Of the 41 species of plants known to be endemic to Belize, 18 have been recorded within the lowland savanna, and nine species are listed in The World Conservation Union (IUCN) 2010 Red List of Threatened Species. Of the total savanna ecosystem flora, 339 species are characteristic of the open savanna, whilst 309 and 114 species are more frequent in forest and wetland areas respectively. Most species (505, 53% of the lowland savanna flora) are herbaceous. Although the lowland savanna has been relatively well collected, there are geographical biases in botanical sampling which have focused historically on the savannas in the centre and the north of the country. A brief review of the collecting history of the lowland savanna is provided, and recommendations are given on how future collecting efforts may best be focused. The lowland savanna is shown to be a significant regional centre of plant diversity. Key words: wetland, flora, conservation, endemics Introduction Savannas cover over two million km2 of the Neotropics (Mistry 2000), making savanna the most ecologically dominant formation of tropical America after tropical forest. However, they suffer from great anthropogenic pressure, particularly from agricultural development (Alho & de Souza Martins 1995). Within Central America and the Caribbean, extensive areas of savanna occur in Belize, Mexico, Honduras, Nicaragua, south- west Panama and central and eastern Cuba (Huber 1987). Savannas are extensive areas of tropical vegetation usually with a ground layer of grasses and xeric herbs and a varying cover of trees. They cover great areas in the tropics that have a strong dry season and are generally subject to seasonal fires to which their native flora has resistant adaptations (e.g. thick corky bark, subterranean lignotubers). One form, the “savanna woodlands” of South America and Africa support characteristic tree floras. Their rainfall is typically between that of wet forest and desert or semi-desert biomes. Belize is 22,965 km² in land area. It is located in the southern part of the Yucatán Peninsula and bordered to the north by the Mexican state of Quintana Roo, to the south and west the Guatemalan department of Petén and to the east, by the Caribbean Sea. Belize’s climate is subtropical, 23°C (monthly mean in December) to 31°C (monthly mean in June), experiencing a marked dry season between February and May, and a hurricane season between June and November. There is a significant precipitation gradient between the north (ca. 1,200 mm/year) and the south (ca. 4,300 mm/year) with maximum rainfall occurring around Doyle’s Delight in Toledo District. Belize is part of the Mesoamerican biodiversity hotspot (Conservation International 2004) which occupies less than 0.5% of the terrestrial planet which is thought to contain 17% of all terrestrial species. Savannas comprise 2,824 km2 or 12.3% of the land area of Belize and are found across the length of the country at altitudes from sea level to more than 1,000 m (Mountain Pine Ridge). They are the second largest VASCULAR PLANTS OF THE LOWLAND SAVANNAS OF BELIZE Phytotaxa 101 (1) © 2013 Magnolia Press • 3 natural biome after lowland broadleaved forests (Meerman & Sabido 2001a). Despite its extent the savanna ecosystem is poorly represented in Belize’s extensive protected areas system (Meerman 2005). The lowland savannas (<500 m in altitude) studied here occupy 2,342 km2 or 10.2% of the land area of Belize (Meerman & Sabido 2001a). Whilst approximately 26% of the lowland savanna are within protected areas, Cameron et al. (2010) have estimated from archive satellite imagery that around 200 km2 or some 12% of former lowland savanna areas have been converted to other land uses since 1980, comparable to the rates of deforestation in Belize (Cherrington et al. 2010). The influence of geology and soils on savanna distribution in Belize is not fully understood but the substrates on which savanna occur are acid and infertile. In the north of the country, however, savanna appears to be confined to coarse-textured palaeo-alluvial deposits eroded from the Maya Mountain Massif and from ancient littoral deposits (Romney 1960), interspersed with calcareous outcrops (where forest is predominant). Savanna to the south of the Belize River Valley occurs over sands and gravels derived from the many streams issuing from the Maya Mountains. We define lowland savanna as any natural or
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