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Vol. 50 (3-4)

Sep.-Dec. / Set.-Dic. 2002



In Memoriam

Pedro León
James Kezer

Jaime E. García
Luis A. Fournier Origgi


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