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Large-scale climatic phenomena drive fluctuations in macroinvertebrate assemblages in lowland tropical streams, Costa Rica: The importance of ENSO events in determining long-term (15y) patterns
(2019-02-08)
Understanding how environmental variables influence the distribution and density of organisms over relatively long temporal scales is a central question in ecology given increased climatic variability (e.g., precipitation, ...
Myxomycetes within ecotones in temperate and tropical forests
Mixomicetes en ecotonos forestales de bosques templados y tropicales
Mixomicetos em ecótonos florestais de bosques temperados e tropicais
(2021)
Ecotones are interesting portions of forests where microorganisms can be studied for monitoring and
diversity purposes. Given the faster life cycle of these organisms, their study in such a context is important
to develop ...
Detection of a synthetic sex steroid in the American crocodile (Crocodylus acutus): Evidence for a novel environmental androgen
(2017-08)
Endocrine-disrupting contaminants (EDC's) are well known to alter sexual differentiation among vertebrates via estrogenic effects during development, particularly in organisms characterized by
temperature-dependent sex ...
Exploring farmer preferences towards innovations in the vanilla supply chain
(2021-11)
The vanilla supply chain is characterized by high risk crop management and unstable supply. In order to meet global vanilla demand while improving production sustainability, new approaches considering agro-ecological ...
On the meaning of Cypripedium × grande (Orchidaceae) and its taxonomic history, with a new name for the nothospecies occurring in Costa Rica and Panama
(2018-12-11)
The taxonomic history of Phragmipedium × grande is traced to show that its current treatment as the cross between P. longifolium and P. humboldtii is untenable. According to our interpretation of the holotype and other ...
Malaxis Sw.
(2020-03-31)
The genus Malaxis was named in 1788 by Olof Swartz. The
name was based on malaxo, Greek for “softening,” apparently
referring to the soft or delicate leaves.
Traditionally Malaxis has been characterized in part by ...
Mixomicetes del Cerro Buenavista – Macizo de la Muerte, Talamanca
(2004-01-01)
Se incluye un listado con descripciones de especies de mixomicetes del Cerro Buenavista (Cerro de la Muerte). El listado incluye una clave dicotómica y un glosario.
First report of Diaphorina citri (Hemiptera: Psyllidae) in Costa Rica
(2005-09)
The Asian psyllid was reported in Rio de Janeiro, Brazil, by Costa Lima (1942) and by Catling (1970). In June 1998, the insect was detected in Florida and by September 2000 this pest had spread to 31 Florida counties ...
Cariotipos de diez especies de serpientes costarricenses de la familia Viperidae
(1979)
All the karyotypes of ten snake species of the family Viperidae from Costa Rica have a diploid number of 36 chromosomes, 16 macro- and 20 microchromosomes; females show an heteromorphism in the fourth pair. The karyological ...
A just overtime discovery: another new species of Echinosepala (Orchidaceae) from Costa Rica
(2022-08-13)
Echinosepala truncata is described as new to science and illustrated from the holotype. It is compared
with E. tomentosa, from which it differs by the sparsely lanate ovary, the narrowly obovate, apically rounded synsepal, ...