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Mostrando ítems 689-708 de 1640
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Flora introduced and naturalized in Central America
(2022)Successful control and prevention of biological invasions depend on identifying the sources, vectors, and pathways that are more likely to originate new invasions. Within this context, updated local and regional checklists ... -
Florae costaricensis subtribui Pleurothallidinis (Orchidaceae) prodromus II. Systematics of the Pleurothallis cardiothallis and P. phyllocardia Groups, and Other Related Groups of Pleurothallis with Large Vegetative Habit
(2021)We discuss a group of Pleurothallis species mostly characterized by plants relatively tall for the genus, with stems more than 20 cm long and fasciculate inflorescences produced above the leaf from a spathaceous, sometimes ... -
Florae costaricensis subtribui pleurothallidinis prodromus—Systematics of Echinosepala (Orchidaceae)
(2020-12)We provide a general introduction to the prodromi to Flora Costaricensis, and an introduction to the precursors of subtribe Pleurothallidinae. We present a systematic revision of the genus Echinosepala for the flora of ... -
Floral anatomy and evolution of pollination syndromes in Lepanthes and close relatives
(2019-07)Pleurothallidinae is the largest Neotropical orchid subtribe encompassing >5100 species that are mainly dipteran-pollinated. Various pollination syndromes, targeting hump-backed flies (Phoridae), fungal gnats (Sciaridae), ... -
Floral elaiophores in Lockhartia Hook. (Orchidaceae: Oncidiinae): their distribution, diversity and anatomy
(2013)Background and Aims: A significant proportion of orchid species assigned to subtribe Oncidiinae produce floral oil as a food reward that attracts specialized bee pollinators. This oil is produced either by glabrous glands ... -
Florecimientos de dinoflagelados nocivos en la costa Pacífica de Costa Rica
(Hidrobiológica. Vol. 18 No. 1 • 2008, 2008)Desde 1979 se han reportado florecimientos de especies de microalgas nocivas (FAN) en la costa Pacífica de Costa Rica, reconociéndose hasta el 2005 al menos 13 taxa de dinoflagelados. En años recientes estos fenómenos se ... -
Flores y frutos de la Reserva Biológica Alberto Manuel Brenes
(San Ramón, Alajuela, 2011)Representa una muestra representativa de la flora y frutos de la Reserva Biológica Alberto Manuel Brenes y ha sido elaborada para personas que empiezan a incursionar en el campo científico y para aquellas aficionadas a las ... -
Flower consumption, ambient temperature and rainfall modulate drinking behavior in a folivorous-frugivorous arboreal mammal
(2021)Water is vital for the survival of any species because of its key role in most physiological processes. However, little is known about the non-food-related water sources exploited by arboreal mammals, the seasonality of ... -
Flowers, sex and lies - The scandalous pollination of Lepanthes
(2005)El texto hace referencia a las orquídeas, para este caso toma en cuenta la especie de Lepanthes, se centra en tres aspectos importantes: la reproducción, las mentiras y la polinización de esta planta. -
Foraminifera
(I.S. Wehrtmann, J. Cortés (eds.) Marine Biodiversity of Costa Rica, Central America. Springer., 2009)Eighty-four species of benthic and one species of planktonic Foraminifera, classified under 40 genera and 34 families reported for Costa Rica are listed in this paper. These lists are based on literature data and ongoing ... -
Forest in a changing world
(2016)Forest ecosystems have been used for human populations over millennia. Even today, forests provide a large amount of resources and environmental services for modern human populations, but disturbance caused by human ... -
Four new species of Lockhartia (Orchidaceae, Oncidiinae)
(2014)Four new species of Lockhartia are described and illustrated: L. compacta from Bolivia, L. endresiana from Costa Rica, L. rugosifolia from Ecuador and Peru, and L. tenuiflora from Ecuador and Colombia. Comments are given ... -
Four new species of Pleurothallis (Orchidaceae: Pleurothallidinae) from the Valle del Cauca Department in Colombia
(2017)Pleurothallis indecora, P. juvenilis, P. lueriana and P. queremalensis are described from material collected in the municipality of Dagua, department of Valle del Cauca, Colombia. The four species were found during field ... -
Frankliniella occidentalis (Pergande 1895) (Thripidae: Thripinae) un posible bioindicador de la condición del medio ambiente
(2014)En este trabajo se evalúa la utilidad de Frankliniella occidentalis como especie bioindicadora. El estudio consta de dos enfoques 1) los datos de la colección de Thysanoptera de Costa Rica sobre la presencia de esta ... -
Frankliniella, dos nuevos registros en México y Costa Rica: distribución y sus implicaciones en ecología y taxonomía (Thysanoptera: Thripidae)
(2015-12-05)En este trabajo se presentan dos nuevos informes de especies de Frankliniella Karny 1910 una para Costa Rica de Frankliniella albacuriosa Johansen 1998 y Frankliniella caribae Retana-Salazar 2010 para dos estados de México. ... -
Fraude en la autoría de artículos científicos
(Revista Biomédica, vol. 18, n. 2, 2007-05)El fraude científico como toda conducta delictiva, implica el engaño deliberado al margen de las normas éticas. Los investigadores corruptos inventan desde datos hasta experimentos; pero, el tipo de fraude científico más ... -
Frequency and synchronisation features of a highly overlapped duet changes according to the context
(2019)Territorial defence and maintaining contact are two hypotheses of duet functions. Nevertheless, the acoustic characteristics of duets in these contexts have been poorly quantified. This work aimed to compare the spectrotemporal ... -
Fresh biochar application provokes a reduction of nitrate which is unexplained by conventional mechanisms
(2021)Soil-applied biochar has been reported to possess the potential to mitigate nitrate leaching and thus, exert beneficial effects beyond carbon sequestration. The main objective of the present study is to confirm if a pine ... -
Freshwater crabs as predators and prey: the case of Ptychophallus uncinatus Campos & Lemaitre, 1999 (Brachyura, Pseudothelphusidae) from Costa Rica, Central America
(2019)Primary freshwater crabs are an important component of the food web in aquatic ecosystems, but our knowledge about the role of these decapods as predators and as prey is far from complete. Here we report observations of ...