Abstract
The Venezuelan Guayana region is located in equatorial northeastern South America. It covers approximately 454,000 km2, including the second largest South American mountain system with highest elevation at 3,014 m a.s.l. and several extensive lowland plains and peneplains, all in the Orinoco river watershed. Highland relief consists mainly of flat-topped mesetas of Precambrian sandstones–quartzites reaching elevations of 1,800–2,500 m a.s.l., and rugged mountains of igneous–metamorphic Proterozoic rocks with undulating summits at 1,800–2,200 m a.s.l. On both the meseta and mountain summits, extensive peat deposits have been found during modern scientific explorations. Chapter 3 describes the geologic, geomorphic, hydrologic, and vegetational features of the Guayana region as a whole and the geo-ecological characteristics of the study areas in three different mountain complexes and adjacent lowland areas. All study areas are located in the Venezuelan Amazonas state and represent first samples for pedological and paleoecological research. Likewise, the inventory and description of the montane vegetation types and their associated floristic elements have yielded important new data on these still poorly explored Guayana ecosystems. The flora and vegetation of the peatlands is highly specialized and adapted to the environmental conditions of the Guayana montane habitats, which are included in the biogeographic Pantepui Province. More than 2,000 species of flowering plants are growing there, including 35% of endemic species which have evolved in numerous endemic genera. The predominant vegetation types in the swampy areas are shrublands and herbaceous meadows with peculiar growth forms, such as pitcher plants (genus Heliamphora), tubular rosettes (genus Brocchinia), sclerophyllous shrubs (genus Mycerinus), and paramoid stem rosettes (genus Chimantaea). Small but very dense forests are growing in depressions and rock crevices, dominated by numerous endemic tree species belonging to the genera Bonnetia, Schefflera, Stenopadus, and Gongylolepis.
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References
The body of scientific literature on the Guayana Highlands is considerable, although large areas still lack basic information because either they have not yet been explored or gray information gathered by explorers has not been published (Huber and Foster 2003). There is an important set of publications related to the mineral resources (gold, diamonds) of the Guayana Shield. The literature on botany and related vegetation sciences is much less abundant. One of the most complete bibliographic lists on plant sciences of the Venezuelan Guayana was published in the first volume of the Flora of the Venezuelan Guayana (Steyermark et al. 1995–2005), Missouri Botanical Garden, St. Louis and Timber Press, Portland, OR, 1995.
AEROSERVICE Corporation (1972) Levantamiento radar de Venezuela sur. 3 vols, maps 1:250,000. MOP-CODESUR, Caracas
Barthlott W, Gröger A, Porembski S (1993) Some remarks on the vegetation of tropical inselbergs: diversity and ecological differentiation. Biogeographica (Paris) 69:105–124
Berry PE, Riina R (2005) Insights into the diversity of the Pantepui flora and the biogeographic complexity of the Guayana Shield. In: Friis I, Balslev H (eds) Plant diversity and complexity patterns: local, regional and global dimensions. Biol Skr 55:145–167
Berry PE, Huber O, Holst BK (1995) Floristic analysis and phytogeography. In: Steyermark JA, Berry PE, Holst BK (gen eds) Flora of the Venezuelan Guayana, vol 1; Berry PE, Holst BK, Yatskievych K (eds) Introduction. Missouri Botanical Garden and Timber Press, St. Louis, MO, Portland, OR, pp 161–191
Brewer-Carías C (ed) (1988) Cerro de la Neblina. Resultados de la expedición 1983–1987. Fundación para el Desarrollo de las Ciencias Físicas, Matemáticas y Naturales, Caracas
Briceño H, Schubert C (1990) Geomorphology of the Gran Sabana, Guayana Shield, southeastern Venezuela. Geomorphology 3:125–141
Briceño H, Schubert C (1992) Geomorfología. In: Huber O (ed) El Macizo del Chimantá, Escudo de Guayana, Venezuela. Un ensayo ecológico tepuyano. Oscar Todtmann Editores, Caracas, pp 61–74
Briceño H, Schubert C, Paolini J (1990) Table-mountain geology and surficial geochemistry: Chimantá Massif, Venezuelan Guayana Shield. J South Am Earth Sci 3:79–194
Büdel B, Lüttge U, Stelzer R, Huber O, Medina E (1994) Cyanobacteria of rocks and soils of the Orinoco Lowlands and the Guayana Uplands, Venezuela. Bot Acta 107:422–431
Burga GA, Klötzli F, Grabherr G (eds) (2004) Gebirge der Erde: Landschaft, Klima, Pflanzenwelt. Eugen Ulmer GmbH, Stuttgart
Cárdenas-L D (2007) Flora del Escudo Guayanés en Inírida (Guainía, Colombia). Instituto Amazónico de Investigaciones Científicas – Sinchi, Bogotá
Colonnello G (1984) Contribución al conocimiento del microclima y medio físico-biótico de la cima del tepuy Marahuaca. Mem Soc Ci Nat “La Salle” 122:9–35
Colvée P (1973) Cueva en cuarcitas en el Cerro Autana, Territorio Federal Amazonas. Bol Soc Venez Espeleol 4:5–13
Cordani UG, Fraga LM, Reis N, Brito-Neves BB (2010) On the origin and tectonic significance of the intra-plate events of Grenvillian-type age in South America: a discussion. J South Am Earth Sci 29:143–159
Dalton LV (1912) On the geology of Venezuela. Geol Mag 9:203–210
Delascio F, Steyermark JA (1989) Notas sobre la vegetación del Marahuaka. Acta Terramar 1:15–20
Dezzeo N, Huber O (1995) Tipos de bosque sobre el Cerro Duida, Guayana Venezolana. In: Churchill SP, Balslev H, Forero E, Luteyn JL (eds) Biodiversity and conservation of neotropical montane forests. The New York Botanical Garden, Bronx, NY, pp 149–158
Doyle AC (1912) The lost world. Hodder and Stoughton, New York, NY
EDELCA (2010) Sistema de información hidroclimatológico. Gerencia de Gestión Ambiental, Departamento de Gestión de Información Geográfica y Ambiental. Puerto Ordaz
Gaudette H, Hurley P, Fairbairn H (1977) U-Pb Zircon ages from the northern Guayana shield, Venezuela. 2do Congreso Latinoamericano de Geología 4:3045–3047
Ghosh SK (1977) Geología del Grupo Roraima en Territorio Federal Amazonas. In: Memoria V Congreso Geológico Venezolano, vol 1. Caracas, pp 167–193
Gibbs AK, Barron CN (1993) The geology of the Guiana Shield. Oxford Monographs on Geology and Geophysics, vol 22. Oxford University Press, New York, NY
Givnish TJ, Burkhardt EL, Happel RE, Weintraub JD (1984) Carnivory in the bromeliad Brocchinia reducta, with a cost/benefit model for the general restriction of carnivorous plants to sunny, moist, nutrient-poor habitats. Amer Naturalist 124:479–497
Givnish TJ, McDiarmid RW, Buck WR (1986) Fire adaptation in Neblinaria celiae (Theaceae), a high-elevation rosette shrub endemic to a wet equatorial tepui. Oecologia (Berlin) 70:481–485
Gleason HA, and collaborators (1931) Botanical results of the Tyler-Duida expedition. Bull Torrey Bot Club 58:277–516
Gosh SK (1985) Geology of the Roraima Group and its implications. In: Muñóz M (ed) I Simposium Amazónico (Puerto Ayacucho 1981). Bol Geol, Memoria, Publ Esp 10. Ministerio de Energía y Minas, Dirección de Geología, Caracas, pp 33–50
Gröger A (2000) Flora and vegetation of inselbergs of Venezuelan Guayana. In: Porembski S, Barthlott W (eds) Inselbergs – biotic diversity of isolated rock outcrops in tropical and temperate regions, vol 146, Ecological studies. Springer, Berlin, pp 291–314
Gröger A, Huber O (2007) Rock outcrop habitats in the Venezuelan Guayana lowlands: their main vegetation types and floristic components. Rev Bras Bot 30:599–609
Grupo Científico Chimantá (1986) Reconocimiento preliminar del Macizo del Chimantá, Estado Bolívar (Venezuela). Acta Ci Venez 37:25–42
Guerra F, Puig H, Chaume R (1998) The forest-savanna dynamics from multi-date Landsat-TM data in Sierra Parima, Venezuela. Int J Remote Sens 19(11):2061–2075
Hackley PC, Urbani F, Karlsen AW, Garrity CP (comp.) (2005) Geologic shaded relief map of Venezuela. US Geological Survey, Boulder, CO (scale 1:750,000, 2 sheets)
Huber O (1982) Significance of savanna vegetation in the Amazon Territory of Venezuela. In: Prance GT (ed) Biological diversification in the Tropics. Columbia University Press, New York, NY, pp 221–244
Huber O (1989) Shrublands of the Venezuelan Guayana. In: Holm-Nielsen LB, Nielsen IC, Balslev H (eds) Tropical forests: botanical dynamics, speciation and diversity. Academic, London, pp 271–285
Huber O (1992) La vegetación. In: Huber O (ed) El Macizo del Chimantá, Escudo de Guayana, Venezuela. Un ensayo ecológico tepuyano. Oscar Todtmann Editores, Caracas, pp 161–178
Huber O (1994a) Recent advances in the phytogeography of the Guayana region, South America. Mém Soc Biogéogr (3. Série) 4:53–63
Huber O (1994b) La vegetación. In: Dezzeo N (ed) Ecología de la Altiplanicie de la Gran Sabana (Guayana Venezolana) I. Investigaciones sobre la dinámica bosque-sabana en el sector SE: subcuencas de los ríos Yuruaní, Arabopó y Alto Kukenán. Sci Guianae 4:79–80, 95–118
Huber O (1995a) Geographical and physical features. In: Steyermark JA, Berry PE, Holst BK (gen eds) Flora of the Venezuelan Guayana, vol 1; Berry PE, Holst BK, Yatskievych K (eds) Introduction. Missouri Botanical Garden and Timber Press, St. Louis, MO, Portland, OR, pp 1–61
Huber O (1995b) Vegetation. In: Steyermark JA, Berry PE, Holst BK (gen eds) Flora of the Venezuelan Guayana, vol 1; Berry PE, Holst BK, Yatskievych K (eds) Introduction. Missouri Botanical Garden and Timber Press, St. Louis, MO, Portland, OR, pp 97–160
Huber O (1995c) Guayana Venezolana – Mapa de vegetación. Venezuelan Guayana – Vegetation map. 1:2,000,000. CVG-EDELCA, Missouri Botanical Garden, Caracas
Huber O (2005) Diversity of vegetation types in the Guayana Region: an overview. In: Friis I, Balslev H (eds) Plant diversity and complexity patterns: local, regional and global dimensions. Biol Skr 55:169–188
Huber O (2006) Herbaceous ecosystems on the Guayana Shield, a regional overview. J Biogeogr 33:464–475
Huber O, Foster MN (eds) (2003) Conservation priorities for the Guayana Shield: 2002 consensus. Conservation International – CABS, Guiana Shield Initiative, UNDP, IUCN, Washington, DC, p 99
Huber O, Steyermark JA, Prance GT, Alès C (1984) The vegetation of the Sierra Parima, Venezuela-Brazil: some results of recent exploration. Brittonia 36:104–139
Huber O, Rosales J, Berry PE (1997) Estudios botánicos en las montañas altas de la cuenca del Río Caura (Estado Bolívar, Venezuela). In: Huber O, Rosales J (eds) Ecología de la Cuenca del Río Caura, Venezuela. II. Estudios especiales. Sci Guianae 7:441–468
Huber O, Febres G, Arnal H (eds) (2001) Ecological guide to the Gran Sabana. Canaima National Park – Venezuela. The Nature Conservancy – ChevronTexaco, Caracas
INE (2001) Censo INE 2001. Instituto Nacional de Estadística, Caracas
Körner C (1999) Alpine plant life. Functional plant ecology of high mountain ecosystems. Springer, Berlin
Leal RA (2010) Historia holocena de la vegetación y el fuego en bordes sabana/bosque y turberas de la Gran Sabana, Guayana Venezolana. PhD Dissertation. Universidad Simón Bolívar, Caracas, pp xvi + 277
MARNR (1979) Atlas de la Región Sur. Dirección General de Información e Investigación del Ambiente, CODESUR, Caracas
MARNR-ORSTOM (1987) Atlas del inventario de tierras del Territorio Federal Amazonas. MARNR, Dirección General Sectorial de Información e Investigación del Ambiente (DGSIIA), Caracas
Mendoza V (2000) Evolución geotectónica y recursos minerales del Escudo de Guayana en Venezuela (y su relación con el Escudo Sudamericano). Cátedra de Geología de Venezuela. Escuela Ciencias de la Tierra. Universidad de Oriente, Ciudad Bolívar
Michelangeli A (1989) Biósfera del Marahuaka y zonas adyacentes (Territorio Federal Amazonas-Venezuela). Introducción. Acta Terramar 1:1–3
McPherson S (2008) Lost worlds of the Guiana Highlands. Redfern Natural History Productions, Poole, Dorset, England, pp ix + 385
Nogué S, Rull V, Montoya E, Huber O, Vegas-Villarúbia T (2009) Paleoecology of the Guayana Highlands (northern South America): Holocene pollen record from the Eruoda-tepui, in the Chimantá massif. Palaeogeogr Palaeoclimatol Palaeoecol 281:165–173
Olmeta MA (1968) Determinación de edades radiométricas en rocas de Venezuela y su procedimiento por el método K/Ar. Bol Geol (Caracas) 10:113–208
Orme AR (2007) Tectonic provinces of South America. In: Veblen TT, Young KR, Orme AR (eds) The physical geography of South America. Oxford University Press, New York, NY
Pouyllau M (1989) Les paysages géomorphologiques de l’Amazonie et de la Guyane vénézuélienne. In: Pouyllau D, Pouyllau M, Reaud-Thomas G, Seurin M (eds) Venezuela environnements et changements, tome 2. Travaux et Documents de Géographie Tropicale 63. Centre d’Etudes de Géographie Tropicale, Centre National de la Recherche Scientifique, Bordeaux
Projeto RADAMBRASIL (1975) Folha NA.20 Boa Vista e parte das Folhas NA.21 Tumucumaque, NB.20 Roraima e NB.21. Levantamento de recursos naturais, vol 8. Ministerio das Minas e Energia, Departamento Nacional da Produção Mineral, Rio de Janeiro
Projeto RADAMBRASIL (1976) Folha NA.19 Pico da Neblina. Levantamento de recursos naturais, vol 11. Ministerio das Minas e Energia, Departamento Nacional da Produção Mineral, Rio de Janeiro
Ramos B (1997) Los suelos en las cumbres de las Sierras de Maigualida y Uasadi-Jidi, Guayana venezolana. In: Huber O, Rosales J (eds) Ecología de la Cuenca del Río Caura, Venezuela. II. Estudios especiales. Sci Guianæ 7:423–440
Reid AR (1972) Stratigraphy of the type area of the Roraima Group, Venezuela. Bol Geol (Caracas), Publ Esp 6:343–353
Reid AR, Bisque R (1975) Stratigraphy of the diamond-bearing Roraima-Group, Estado Bolívar, Venezuela. Colorado Sch Mine Q 70:61–82
Riina R, Huber O (2003) Ecosistemas exclusivos de la Guayana. In: Aguilera M, Azócar A, González JE (eds) Biodiversidad en Venezuela. Fundación Polar, Ministerio de Ciencia y Tecnología, Fondo Nacional de Ciencia, Tecnología e Inovación (FONACIT), Caracas, pp 828–861
Rinaldi M, Rull V, Schubert C (1990) Análisis paleoecológico de una turbera en la Gran Sabana (Santa Cruz de Mapaurí), Venezuela: resultados preliminares. Acta Ci Venez 41:66–68
Rull V (1991) Contribución a la paleoecología de Pantepui y la Gran Sabana (Guayana Venezolana): clima, biogeografía y ecología. Sci Guianae 2. Caracas
Rull V (1992) Successional patterns of the Gran Sabana (Southeastern Venezuela) vegetation during the last 5000 years, and its responses to climatic fluctuations and fire. J Biogeogr 19:329–338
Rull V (1999) A palynological record of a secondary succession after fire in the Gran Sabana, Venezuela. J Quatern Sci 14:137–152
Rull V (2003) An illustrated key for the identification of pollen from Pantepui and the Gran Sabana (eastern Venezuelan Guayana). Palynology 27:95–129
Rull V (2004) Biogeography of the “Lost World”: a palaeoecological perspective. Earth Sci Rev 67:125–137
Rull V (2005) Palaeovegetational and palaeoenvironmental trends in the summit of the Guaiquinima massif (Venezuelan Guayana) during the Holocene. J Quatern Sci 20:135–145
Rull V (2007) Holocene global warming and the origin of the neotropical Gran Sabana in the Venezuelan Guayana. J Biogeogr 34:279–288
Rull V (2009) New evidence on the potential role of fire in the Gran Sabana (Venezuelan Guayana) and implications for early human occupation. Veg Hist Archaeobot 18:219–224
Rull V, Vegas-Vilarrúbia T, Nogué S, Montoya E (2008) Bureaucratic obstruction of conservation science in the Guayana Highlands. Conserv Biol 22:508–509
Rull V, Vegas-Vilarrúbia T, Nogué S, Huber O (2009) Conservation of the unique neotropical vascular flora of the Guayana Highlands in the face of global warming. Conserv Biol 23:1323–1327
Salgado-Labouriau ML, Villar L (1992) Contribución a la flora polínica de los tepuyes. In: Huber O (ed) El Macizo del Chimantá, Escudo de Guayana, Venezuela. Un ensayo ecológico tepuyano. Oscar Todtmann Editores, Caracas, pp 219–236
Schomburgk RH (1840) Journey from Fort San Joaquim, on the Rio Branco, to Roraima, and thence by the rivers Parima and Merewari to Esmeralda, on the Orinoco, in 1838–1839. J R Geogr Soc 10:191–247
Schomburgk R (1848) Versuch einer Fauna und Flora von Britisch-Guiana. In: Schomburgk RH (ed) Reisen in Britisch-Guiana in den Jahren 1840–1844, vol 3. Verlagsbuchhandlung von JJ Weber, Leipzig, pp 531–1259
Schubert C, Fritz P (1985) Radiocarbon ages of peat, Guayana Highlands (Venezuela). Naturwissenschaften 72:427–429
Schubert C, Huber O (1990) The Gran Sabana. Panorama of a region. Lagoven Booklets, Caracas
Schubert C, Briceño HO, Fritz P (1986) Paleoenvironmental aspects of the Caroní-Paragua river basin (southeastern Venezuela). Interciencia 11:278–289
Schubert C, Fritz P, Aravena R (1992) Investigaciones paleoambientales: resultados preliminares. In: Huber O (ed) El Macizo del Chimantá, Escudo de Guayana, Venezuela. Un ensayo ecológico tepuyano. Oscar Todtmann Editores, Caracas, pp 97–110
Schubert C, Fritz P, Aravena R (1994) Late Quaternary paleoenvironmental studies in the Gran Sabana (Venezuelan Guayana Shield). Quatern Int 21:81–90
Sidder GB, Mendoza SV (1995) Geology of the Venezuelan Guayana Shield and its relation to the geology of the entire Guayana Shield. In: Sidder GB, García AE, Stoeser JW (eds) Geology and mineral deposits of the Venezuelan Guayana Shield. US Geol Surv Bull 2124. US Government Printing Office, US Geological Survey, Corporación Venezolana de Guayana, Técnica Minera CA, Washington, DC, pp [iv], B1-B41 [separate chapter pagination]
Smith AP (1994) Introduction to tropical alpine vegetation. In: Rundel PW, Smith AP, Menzer FC (eds) Tropical alpine environments. Plant form and function. Cambridge University Press, Cambridge, pp 1–19
Steyermark JA (1974) The summit vegetation of Cerro Autana. Biotropica 6:7–13
Steyermark JA (1984). Bonnetia. In: Steyermark JA (ed) Flora of the Venezuelan Guayana-Part I. Ann Missouri Bot Gard 71:297–340
Steyermark JA, Brewer-Carías C (1976) La vegetación de la cima del Macizo de Jaua. Bol Soc Venez Ci Nat 22:179–405
Steyermark JA, Maguire B (1984) Informe preliminar sobre la flora de la cumbre del Cerro Marutaní. Acta Bot Venez 14:91–117
Steyermark JA, Berry PE, Yatskievych K, Holst BK (gen eds) (1995–2005) Flora of the Venezuelan Guayana, vol 1–9. Missouri Botanical Garden Press and Timber Press, St. Louis, MO, Portland, OR
Urbani F (2008) Revisión de la nomenclatura de las unidades de rocas ígneas y metamórficas del norte de Venezuela / A review of the nomenclature of igneous and metamorphic rock units of northern Venezuela. Bol Acad Ci Fis 68:27–43
Urbani F, Talukdar S, Szczerban E, Colvée P (1977) Metamorfismo de las rocas del Grupo Roraima, Edo. Bolívar y Territorio Federal Amazonas. Memoria V Congreso Geológico Venezolano, tomo 2. Ministerio de Energía y Minas, Sociedad Venezolana de Geólogos, Caracas, pp 623–638
US Geological Survey, CVG-TECMIN (1993) Geology and mineral resource assessment of the Venezuelan Guayana Shield. US Geol Surv Bull 2062. US Government Printing Office, Washington, DC
Vareschi V (1992) Observaciones sobre la dinámica vegetal en el Macizo del Chimantá. In: Huber O (ed) El Macizo del Chimantá, Escudo de Guayana, Venezuela. Un ensayo ecológico tepuyano. Oscar Todtmann Editores, Caracas, pp 179–188
Weitzman AL, Stevens PF (1997) Notes on the circumscription of Bonnetiaceae and Clusiaceae, with taxa and new combinations. BioLlania Edición Especial 6:551–564
Wynn JC, Cox DP, Gray F, Schruben PG (compiled) (1993) Geologic and tectonic map of the Venezuelan Guayana (scale 1:1,000,000). US Geol Surv Bull 2062. US Government Printing Office, Washington, DC
Zent EL, Zent S (2004) Floristic composition, structure, and diversity of four forest plots in the Sierra Maigualida, Venezuelan Guayana. Biodivers Conserv 13:2453–2484
Zinck JA, García P, van der Plicht J (2011) Tepui Peatlands: age record and environmental changes. In: Zinck JA, Huber O (eds) Peatlands of the Western Guayana Highlands, Venezuela, Chap. 7. Springer, Heidelberg
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Huber, O., García, P. (2011). The Venezuelan Guayana Region and the Study Areas: Geo-ecological Characteristics. In: Zinck, J., Huber, O. (eds) Peatlands of the Western Guayana Highlands, Venezuela. Ecological Studies, vol 217. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20138-7_3
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