Orchids of Auyán Tepui & Angel Falls
Total Page:16
File Type:pdf, Size:1020Kb

Load more
Recommended publications
-
<I>Scutellospora Tepuiensis</I>
MYCOTAXON ISSN (print) 0093-4666 (online) 2154-8889 Mycotaxon, Ltd. ©2017 January–March 2017—Volume 132, pp. 9–18 http://dx.doi.org/10.5248/132.9 Scutellospora tepuiensis sp. nov. from the highland tepuis of Venezuela Zita De Andrade1†, Eduardo Furrazola2 & Gisela Cuenca1* 1 Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Ecología, Apartado 20632, Caracas 1020-A, Venezuela 2Instituto de Ecología y Sistemática, CITMA, C.P. 11900, Capdevila, Boyeros, La Habana, Cuba * Correspondence to: [email protected] Abstract—Examination of soil samples collected from the summit of Sororopán-tepui at La Gran Sabana, Venezuela, revealed an undescribed species of Scutellospora whose spores have an unusual and very complex ornamentation. The new species, named Scutellospora tepuiensis, is the fourth ornamented Scutellospora species described from La Gran Sabana and represents the first report of a glomeromycotan fungus for highland tepuis in the Venezuelan Guayana. Key words—arbuscular mycorrhizal fungus, taxonomy, tropical species, Gigasporaceae, Glomeromycetes Introduction The Guayana shield occupies a vast area that extends approximately 1500 km in an east-to-west direction from the coast of Suriname to southwestern Venezuela and adjacent Colombia in South America. This region is mostly characterized by nutrient-poor soils and a flora of notable species richness, high endemism, and diversity of growth forms (Huber 1995). Vast expanses of hard rock (Precambrian quartzite and sandstone) that once covered this area as part of Gondwanaland (Schubert & Huber 1989) have been heavily weathered and fragmented by over a billion years of erosion cycles, leaving behind just a few strikingly isolated mountains (Huber 1995). These table mountains, with their sheer vertical walls and mostly flat summits, are the outstanding physiographic feature of the Venezuelan Guayana (Schubert & Huber 1989). -
Catalogue of the Amphibians of Venezuela: Illustrated and Annotated Species List, Distribution, and Conservation 1,2César L
Mannophryne vulcano, Male carrying tadpoles. El Ávila (Parque Nacional Guairarepano), Distrito Federal. Photo: Jose Vieira. We want to dedicate this work to some outstanding individuals who encouraged us, directly or indirectly, and are no longer with us. They were colleagues and close friends, and their friendship will remain for years to come. César Molina Rodríguez (1960–2015) Erik Arrieta Márquez (1978–2008) Jose Ayarzagüena Sanz (1952–2011) Saúl Gutiérrez Eljuri (1960–2012) Juan Rivero (1923–2014) Luis Scott (1948–2011) Marco Natera Mumaw (1972–2010) Official journal website: Amphibian & Reptile Conservation amphibian-reptile-conservation.org 13(1) [Special Section]: 1–198 (e180). Catalogue of the amphibians of Venezuela: Illustrated and annotated species list, distribution, and conservation 1,2César L. Barrio-Amorós, 3,4Fernando J. M. Rojas-Runjaic, and 5J. Celsa Señaris 1Fundación AndígenA, Apartado Postal 210, Mérida, VENEZUELA 2Current address: Doc Frog Expeditions, Uvita de Osa, COSTA RICA 3Fundación La Salle de Ciencias Naturales, Museo de Historia Natural La Salle, Apartado Postal 1930, Caracas 1010-A, VENEZUELA 4Current address: Pontifícia Universidade Católica do Río Grande do Sul (PUCRS), Laboratório de Sistemática de Vertebrados, Av. Ipiranga 6681, Porto Alegre, RS 90619–900, BRAZIL 5Instituto Venezolano de Investigaciones Científicas, Altos de Pipe, apartado 20632, Caracas 1020, VENEZUELA Abstract.—Presented is an annotated checklist of the amphibians of Venezuela, current as of December 2018. The last comprehensive list (Barrio-Amorós 2009c) included a total of 333 species, while the current catalogue lists 387 species (370 anurans, 10 caecilians, and seven salamanders), including 28 species not yet described or properly identified. Fifty species and four genera are added to the previous list, 25 species are deleted, and 47 experienced nomenclatural changes. -
Canaima National Park and Angel Falls
Venezuela Tours • Canaima National Park & Angel Falls Canaima National Park & Angel Falls 6 nights / 7 days DAY 1: CARACAS A guide will greet you upon arrival and will transfer you to your hotel for two nights’ accommodation. DAY 2: CARACAS Today you will join a full day city tour of Venezuela with a shared guide and transportation included as well as all entrance fees required. The morning starts with a well-planned tour to the city’s major historical sites including Simon Bolivar’s birth place and museum, the cathedral and Sacro Museum, the Consejo Municipal and the Avila Hills for a panoramic view of the city. After lunch you will visit the Quinta Anauco museum, one of the best in the city. DAY 3: CARACAS – PUERTO ORDAZ – CANAIMA NATIONAL PARK A guide will transfer you to the airport in time to check in for and to board your flight to Puerto Ordaz connecting with your flight to Canaima National Park. Upon arrival a guide will greet you and will transfer your Canaima lodge for three nights’ accommodation. After lunch you will embark on a guided excursion to Yuri Falls. Yuri Falls are located some 10km from the Canaima Lagoon by boat. En route the group will stop for a number of fantastic photo opportunities in the unique landscape. Your guide will point out interesting rock formations and other peculiarities found in Canaima. After a short 20 minute navigation you will arrive at a pier where the group will disembark and prepare for a short walk through the jungle. At the falls where you will have some free time for swimming and relaxing before returning to camp for dinner and overnight accommodations. -
Two New Endangered Species of Anomaloglossus (Anura: Aromobatidae) from Roraima State, Northern Brazil
Zootaxa 3926 (2): 191–210 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2015 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.3926.2.2 http://zoobank.org/urn:lsid:zoobank.org:pub:BCA3901A-DF07-4FAF-8386-C24649557313 Two new endangered species of Anomaloglossus (Anura: Aromobatidae) from Roraima State, northern Brazil ANTOINE FOUQUET1,2,8, SERGIO MARQUES SOUZA2, PEDRO M. SALES NUNES2,3, PHILIPPE J. R. KOK4,5, FELIPE FRANCO CURCIO2,6, CELSO MORATO DE CARVALHO7, TARAN GRANT2 & MIGUEL TREFAUT RODRIGUES2 1CNRS Guyane USR3456, Immeuble Le Relais, 2 Avenue Gustave Charlery, 97300, Cayenne, French Guiana 2Universidade de São Paulo, Instituto de Biociências, Departamento de Zoologia, Caixa Postal 11.461,CEP 05508-090, São Paulo, SP, Brazil 3Universidade Federal de Pernambuco, Centro de Ciências Biológicas, Departamento de Zoologia, Av. Professor Moraes Rego, s/n. Cidade Universitária CEP 50670-901, Recife, PE, Brazil 4Biology Department, Amphibian Evolution Lab, Vrije Universiteit Brussel, 2 Pleinlaan, B- 1050 Brussels, Belgium 5Department of Recent Vertebrates, Royal Belgian Institute of Natural Sciences, 29 rue Vautier, B- 1000 Brussels, Belgium 6Universidade Federal de Mato Grosso, Instituto de Biociências, Departamento de Biologia e Zoologia, CEP 78060-900, Cuiaba MT, Brazil 7INPA Núcleo de Pesquisas de Roraima (INPA/NPRR), Rua Coronel Pinto 315 – Centro, 69301-970, Boa Vista, RR, Brazil 8Corresponding author. E-mail: [email protected] Abstract We describe two new species of Anomaloglossus from Roraima State, Brazil, that are likely endemic to single mountains currently isolated among lowland forest and savanna ecosystems. The first species, Anomaloglossus tepequem sp. -
Why the World's Tallest Waterfall Is Named Angel Falls
terrae incognitae, Vol. 44 No. 1, April, 2012, 16–42 Why the World’s Tallest Waterfall is Named Angel Falls Karen Angel Eureka, California, USA Jimmie Angel (1899–1956) was an aviator and adventurer in the early years of air exploration. This article discusses his discovery of Angel Falls, the world’s tallest waterfall, which bears his name, and the impact of that discovery — and his reputation and dogged determination — on later expeditions into the Venezuelan interior. The author, Angel’s niece, pieces together this fascinating story using a blend of dedicated archival research and painstakingly acquired family history and the reminiscences of friends and acquaintances of Jimmie and his wife Marie. The result is a tale of modern-day exploration and geographic discovery. keywords Jimmie Angel, Angel Falls, Auyántepui, E. Thomas Gilliard, Anne Roe Simpson, George Gaylord Simpson, Venezuela When I began researching the life of American aviator James “Jimmie” Crawford Angel (1899–1956), there were many stories about him in books, newspapers, magazines, and more recently on websites and blogs. Some stories can be verified by the Angel family or other sources; some stories are plausible, but remain unverified; other stories are fabrications. The result is a tangle of true stories and unverified stories. Finding the truth about Jimmie Angel is also complicated because he himself repeated the various unverified stories that became legends about his life.1 As the daughter of Jimmie Angel’s youngest brother Clyde Marshall Angel (1917– 97), I had heard stories about my uncle since childhood, but the family had few documents to support the stories. -
Anura: Dendrobatidae: Anomaloglossus) from the Orinoquian Rainforest, Southern Venezuela
TERMS OF USE This pdf is provided by Magnolia Press for private/research use. Commercial sale or deposition in a public library or website is prohibited. Zootaxa 2413: 37–50 (2010) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2010 · Magnolia Press ISSN 1175-5334 (online edition) A new dendrobatid frog (Anura: Dendrobatidae: Anomaloglossus) from the Orinoquian rainforest, southern Venezuela CÉSAR L. BARRIO-AMORÓS1,4, JUAN CARLOS SANTOS2 & OLGA JOVANOVIC3 1,4 Fundación AndígenA, Apartado postal 210, 5101-A Mérida, Venezuela 2University of Texas at Austin, Integrative Biology, 1 University Station C0930 Austin TX 78705, USA 3Division of Evolutionary Biology, Technical University of Braunschweig, Spielmannstr 8, 38106 Braunschweig, Germany 4Corresponding author. E-mail: [email protected]; [email protected] Abstract A new species of Anomaloglossus is described from the Venezuelan Guayana; it is the 21st described species of Anomaloglossus from the Guiana Shield, and the 15th from Venezuela. This species inhabits rainforest on granitic substrate on the northwestern edge of the Guiana Shield (Estado Amazonas, Venezuela). The new species is distinguished from congeners by sexual dimorphism, its unique male color pattern (including two bright orange parotoid marks and two orange paracloacal spots on dark brown background), call characteristics and other morphological features. Though to the new species is known only from the northwestern edge of the Guiana Shield, its distribution may be more extensive, as there are no significant biogeographic barriers isolating the type locality from the granitic lowlands of Venezuela. Key words: Amphibia, Dendrobatidae, Anomaloglossus, Venezuela, Guiana Shield Resumen Se describe una nueva especie de Anomaloglossus de la Guayana venezolana, que es la vigesimoprimera descrita del Escudo Guayanés, y la decimoquinta para Venezuela. -
Molecular Phylogenetic Relationships Among Pristimantis Summit Populations in the Eastern Tepui Chain: Insights from P
SALAMANDRA 53(3) 473–478 15 August 2017 CorrespondenceISSN 0036–3375 Correspondence Molecular phylogenetic relationships among Pristimantis summit populations in the eastern tepui chain: insights from P. aureoventris (Anura: Craugastoridae) Daniel Jablonski1, Daniel Gruľa1, César L. Barrio-Amorós2 & Philippe J. R. Kok3 1) Department of Zoology, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia 2) Doc Frog Expeditions, Apartado Postal 220-8000, San José, Pérez Zeledón, San Isidro del General, 11901, Costa Rica 3) Amphibian Evolution Lab, Biology Department, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium Corresponding authors: Daniel Jablonski, Philippe Kok, e-mails: [email protected]; [email protected] Manuscript received: 20 December 2016 Accepted: 23 January 2017 by Jörn Köhler No less than 500 nominal species are currently recognized Wei-Assipu-tepui. Both taxa inhabit similar environments, in the frog genus Pristimantis, the most speciose vertebrate and although phenotypically similar, these two species di- genus in the world (Frost 2016). Only twenty of these spe- verge in a number of morphological characters (e.g., size, cies are distributed in Pantepui (area sensu Kok 2013b, see skin texture), colour pattern (including sexual dichroma- also Kok & Barrio-Amorós 2013, Rojas-Runjaic et al. tism), and advertisement call (Kok et al. 2011). In addition, 2013), nine of them being restricted to tepui summits and P. aureoventris exhibits a high degree of pattern polymor- tepui upper slopes (Kok 2013a, Rojas-Runjaic et al. 2013). phism, while P. yuruaniensis is barely variable. Molecular According to McDiarmid & Donnelly (2005) and Kok phylogenetic analyses indicated that populations of these (2013a, b), several undescribed Pristimantis species could two species are reciprocally monophyletic (Kok et al. -
Anew Species of the Genus Oreophrynella
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Cadernos Espinosanos (E-Journal) Volume 45(6):61-67, 2005 A NEW SPECIES OF THE GENUS OREOPHRYNELLA (ANURA; BUFONIDAE) FROM THE GUIANA HIGHLANDS JOSEFA CELSA SEÑARIS1,2 CARLOS DONASCIMIENTO1,3 OSVALDO VILLARREAL1,4 ABSTRACT Oreophrynella weiassipuensis sp. nov. is described from Wei-Assipu-tepui on the Guyana-Brazil border. The new species is distinguished from other species of the genus by the presence of well developed post-orbital crests, toe webbing, dorsal skin minutely granular with scattered large tubercles, and reddish brown dorsal and ventral coloration. KEYWORDS: Anura, Bufonidae, Oreophrynella, new species, Pantepui, Guiana Shield, Guyana, Brazil. INTRODUCTION was described from the summit of Cerro El Sol (Diego-Aransay and Gorzula, 1987), a tepui which is The bufonids of the genus Oreophrynella are a not part of the Roraima formation. Señaris et al. group of noteworthy small toads, endemic to the (1994) reviewed the Guiana highland bufonids and highlands of the Guiana Region in northeastern South described two additional species, O. nigra from America. Members of this genus are frogs of small Kukenán and Yuruaní tepuis, and O. vasquezi from Ilú- size (< 26 mm SVL), characterized by opposable digits tepui. Finally Señaris (1995) described O. cryptica from of the foot, tuberculate dorsal skin, and direct Auyán-tepui. development (McDiarmid, 1971; McDiarmid and On July 2000 a speleological expedition to Wei- Gorzula, 1989; Señaris et al., 1994). Assipu-tepui, conducted by members of the Italian and The genus was created by Boulenger (1895a, b) Venezuelan speleological societies (Carreño et al., 2002; for the newly described species O. -
State of the Guianas Drivers and Pressures Towards Green Economies
REPORT GUIANASGUI 20201212 Living Guianas Report 2012 State of the Guianas Drivers and pressures Towards green economies Authors WWF Guianas: Dominiek Plouvier (editor in chief), Laurens Gomes Copernicus Institute: Pita Verweij, Nathalie Verlinden CONTENTS Contributors and reviewers WWF: Gerold Zondervan, Laurent Kelle, Patrick Williams, Monique Grooten, Natasja Oerlemans, Natascha Zwaal, Karin Spong PREFACE 3 Local consultants: Jewell Liddell and Donna Ramdial (Guyana), Audrey Guiraud (French Guiana), Gwendolyn Landburg and Sara Ramirez (Suriname). External reviewer: John Goedschalk (Suriname) EXECUTIVE SUMMARY 4 WWF Guianas WWF has been active in the Guianas since the nineteen sixties, 1. LIVING GUIANAS – WHY WE SHOULD CARE? 7 starting with conservation work on Marine Turtles. The Guianas Introducing the Guianas 7 office opened since 1998. The Guianas and the Amazon Biome 8 WWF Guianas’ mission is to conserve the distinct natural Linking biodiversity, ecosystem services and people 10 communities, ecological phenomena and maintain viable Challenges and opportunities for green economies 11 populations of species of the Guianas in order to sustain important ecological processes and services, while supporting the region’s socio-economic development. 2. STATE OF THE GUIANAS: BIODIVERSITY AND ECOSYSTEM SERVICES 13 WWF Biodiversity 13 WWF is one of the world’s largest, most experienced independent Forests 23 conservation organizations, with over 5 million supporters and a Rivers and other freshwater systems 29 global network active in more than 100 countries. Marine and coastal systems 33 WWF’s mission is to stop the degradation of the planet’s natural environment and to build a future in which humans live in harmony with nature, by conserving the world’s biological diversity, ensuring 3. -
Science Snap (#26): Angel Falls, Venezuela
Science Snap (#26): Angel Falls, Venezuela Sorcha McMahon is a third year PhD student in the School of Earth Sciences at the University of Bristol. Sorcha is investigating how strange igneous rocks called carbonatites may have formed, using both natural samples and high-pressure experiments. Canaima National Park. Photo credit: Sorcha McMahon Angel Falls is the world’s highest uninterrupted waterfall in the Canaima National Park, a UNESCO World Heritage site in the Gran Sabana region of Bolívar State, in Venezuela. The waterfall drops from the summit of the largest tepui (table-top mountain) of the Guiana Highlands of South America, Auyantepui, from a height of 979 m. Angel Falls is said to have inspired the setting of the Disney animated film Up(2009) where the location is called Paradise Falls. The nearby Mount Roraima inspired the Scottish author Arthur Conan Doyle to write his novel The Lost World about the discovery of a living prehistoric world full of dinosaurs and primeval plants. The borders of Venezuela, Brazil, and Guyana meet on the top of this tepui, which translates to “house of the gods” in the native tongue of the Pemon, the indigenous people who inhabit the Gran Sabana. Tepuis host a unique array of endemic plant and animal species, with ~1/3 of the plants found nowhere else on the planet. Angel Falls, Venezuela. It is also known as “Kerepakupai Vená” in the original indigenous Pemon language, meaning “waterfall of the deepest place”. Photo credit: Sorcha McMahon The extraordinary topography is part of the Guiana Shield, and began as the Great Plains; an igneous-metamorphic basement formed during the Precambrian as part of the supercontinent Gondwanaland (approx. -
Microvegetation on the Top of Mt. Roraima, Venezuela
Fottea 11(1): 171–186, 2011 171 Microvegetation on the top of Mt. Roraima, Venezuela Jan KA š T O V S K Ý 1*, Karolina Fu č í k o v á 2, Tomáš HAUER 1,3 & Markéta Bo h u n i c k á 1 1Faculty of Science, University of South Bohemia, Branišovská 31, České Budějovice 37005, Czech Republic; *e–mail: [email protected] 2University of Connecticut, Department of Ecology and Evolutionary Biology, 75 North Eagleville Road, Storrs, CT 06269–3043, U.S.A. 3Institute of Botany of the Academy of Sciences, Czech Republic, Dukelská 135, Třeboň 37982, Czech Republic. Abstract: Venezuelan Table Mountains (tepuis) are among world’s most unique ecological systems and have been shown to have high incidence of endemics. The top of Roraima, the highest Venezuelan tepui, represents an isolated enclave of species without any contact with the surrounding landscape. Daily precipitation enables algae and cyanobacteria to cover the otherwise bare substrate surfaces on the summit in form of a black biofilm. In the present study, 139 samples collected over 4 years from various biotopes (vertical and horizontal moist rock walls, small rock pools, peat bogs, and small streams and waterfalls) were collected and examined for algal diversity and species composition. A very diverse algal flora was recognized in the habitats of the top of Mt. Roraima; 96 Bacillariophyceae, 44 Cyanobacteria including two species new to science, 37 Desmidiales, 5 Zygnematales, 6 Chlorophyta, 1 Klebsormidiales, 1 Rhodophyta, 1 Dinophyta, and 1 Euglenophyta were identified. Crucial part of the total biomass consisted of Cyanobacteria; other significantly represented groups were Zygnematales and Desmidiales. -
Shrouds of Mystery
Story Giles Foden Photographs Philip Lee Harvey SHROUDS OF MYSTERY Venezuela’s bizarre antediluvian landscape hides many secrets, tempting fearless adventurers over the years with the possibility of riches and even enlightenment The waterfall seemed to fall through eternity. Sifted in the sieve of itself – hovering in the air, staggering but never stopping – it appeared to be part of a world in which time had slowed down, or somehow been canceled altogether. There are verifiable reasons to explain how this impression could form in my head. Water from above was decelerating as it hit water below, water that had itself already slowed down – and so on and on. The phenomenon that is Angel Falls comes down in some of the world’s oldest natural formations: the table- like “tepui” mountains that rise, suddenly and inconceivably, from the Gran Sabana. This vast area of grassland and jungle is the heartland of Venezuela. The tepuis themselves are remnant geological features of Gondwanaland, Myth and legend surround a supercontinent that existed some 180 million years ago, when Africa and South America were conjoined. It was the American pilot Jimmie no wonder I felt out of time. Angel, after whom Angel Falls in Venezuela is Silent and amazed, perched on a rocky outcrop opposite the falls, I watched the cascade’s foaming sections, named. He was born streaming and checking in the roaring flow. At 3,212 feet high, Angel Falls is the world’s tallest waterfall, a “vertical in Missouri in 1899 river” that has mesmerized many before me. With a flash of insight, I realized its movement exemplified humanity’s never-ending Auyántepui, the mountain from which it descends, reads like dance between holism and separation; everything is connected, something out of a novel.