Vol. 50 (3-4)
Sep.-Dec. / Set.-Dic. 2002
CONTENTS / CONTENIDOS
In Memoriam
Pedro León
James Kezer
Jaime E. García
Luis A. Fournier Origgi
Editorial
Julián Monge-Nájera
How to be a tropical scientist
Gabriel Macaya
Message from the Chancellor of the University of Costa Rica at the celebration of the Revista de Biología Tropical’s fiftieth anniversary
Yamileth González
Message from the Dean of Research of the University of Costa Rica at the celebration of the Revista de Biología Tropical’s fiftieth anniversary
Essays / Ensayos
P.A. Araoye
Man-made lakes, ecological studies and conservation needs in Nigeria
Sabine Dittmann
Stuck in the mud
K. Kathiresan
Greening the blue mud!
César Lodeiros Seijo
A matter of weigth and position
Invited Articles / Artículos Invitados
Jorge León
Half-a-century of botanical publications at the Revista de Biología Tropical
Blanca Pérez-García & Aniceto Mendoza
Neotropical plant morphology
Jorge Cortés & Vanessa Nielsen
Marine sciences at the 50th anniversary of the Revista de Biología Tropical
Paul Hanson
Fifty years of entomological publications in the Revista de Biología Tropical
Francisco Hernández-Chavarría
A vision of tropical biology through the electron microscope
José María Gutiérrez
Publications on biomedical research at the Revista de Biología Tropical
Biomedicine / Biomedicina
Bruno Lomonte & Shirley Ainsworth
Scientific publications from Costa Rica in the Science Citation Index: bibliometric analysis during 1999-2001
José F. Cicció & Jorge Gómez-Laurito
Volatile constituents of the leaves of Siparuna thecaphora (Siparunaceae) from Turrialba, Costa Rica
Botany / Botánica
Alexander Fco. Rojas-Alvarado
New species, new combinations and new distributions in neotropical species of Elaphoglossum (Lomariopsidaceae)
Alexander Fco. Rojas-Alvarado & J. Daniel Tejero-Díez
A new species of Dennstaedtia (Filicales: Dennstaedtiaceae) from México
Ecology and Conservation/ Ecología y Conservación
Ismael Hernández-Valencia & Danilo López-Hernández
Nutrient loss caused by vegetation burning in a Trachypogon sabana
Margaret Stern, Mauricio Quesada & Kathryn E. Stoner
Changes in composition and structure of a Tropical Dry Forest following intermittent cattle grazing
Rogel Villanueva-G.
Polliniferous plants and foraging strategies of Apis mellifera (Hymenoptera: Apidae) in the Yucatán Peninsula, Mexico
Invertebrates / Invertebrados
Frances Osborn
A new species of Parathelohania (Microsporidia) in Anopheles aquasalis larvae (Diptera: Culicidae) from Venezuela
Aldo Cróquer, Estrella Villamizar & Nicida Noriega
Environmental factors affecting tissue regeneration of the reef - building coral Montastraea annularis (Faviidae) at Los Roques National Park, Venezuela
Carlos Alejandro Echeverría
Black corals (Cnidaria: Anthozoa: Antipatharia): first records and a new species from the Brazilian coast
Stefanie Schmidt, Matthias Wolff & José A.Vargas
Population ecology and fishery of Cittarium pica (Gastropoda : Trochidae) on the Caribbean coast of Costa Rica
Miguel Angel Ahumada-Sempoal, Saúl Jaime Serrano-Guzmán & Noe Ruiz-García
Abundance, population structure and growth of Atrina maura (Bivalvia: Pinnidae) in a tropical coastal lagoon of the Mexican Pacific
B. Márquez & M. Jiménez
Associate molluscs of immersed roots of the red mangrove Rhizophora mangle, in Golfo de Santa Fe, Estado Sucre, Venezuela
José M. Riascos & H.-Jörg Urban
Population dynamics of Donax dentifer (Veneroida: Donacidae) in Bahía Málaga, Colombian Pacific, during the “El Niño” event 1997/1998
Stefano Fenoglio, Guido Badino & Francesca Bona
Benthic macroinvertebrate communities as indicators of river environment quality: an experience in Nicaragua
Julián Monge-Nájera & Hou Xianguang
Experimental taphonomy of velvet worms (Onychophora) and implications for the Cambrian “explosion, disparity and decimation” model
Vertebrates / Vertebrados
Carlos A. Lasso & Francisco Provenzano
Two new species of catfish, genus Trichomycterus
(Siluriformes: Trichomycteridae), from Gran Sabana, Guyana Shield, Venezuela
Jorge Galindo-Villegas & F. Sosa-Lima
Gonopodial system review and a new fish record of Poeciliopsis infans (Cyprinodontiformes: Poeciliidae) for Lake Patzcuaro, Michoacan, central Mexico
Martínez-Tabche Laura, Leobargo Gómez, Marcela Galar Martínez & Eugenia López López
Stress induced by sediments polluted with nickel in a rainbow trout farm, Oncorhynchus mykiss (Pisces: Salmonidae)
Joshua Timmock & Christopher Vaughan
A census of mammal populations in Punta Leona Private Wildlife Refuge, Costa Rica
