Browsing Artículos científicos by Title
Now showing items 378-397 of 555
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Natalidad de Chelydra serpentina (Testudines: Chelydridae) en Costa Rica
(Universidad de Costa Rica, 1996)Three Chelydra serpentina nests were monitored from September through October 1993. Maximum natality was 92% (mean 33.73%) and seemed to be associated with high temperature potasium and a moderate concentration of calcium ... -
Neighborhood structure influences the convergence in light capture efficiency and carbon gain: An architectural approach for cloud forest shrubs
(Tree Physiology vol.36 no.6 712-724 2016, 2016-03-24)Although plant competition is recognized as a fundamental factor that limits survival and species coexistence, its relative importance on light capture efficiency and carbon gain is not well understood. Here, we propose a ... -
Neighbourhood structure and light availability influence the variations in plant design of shrubs in two cloud forests of different successional status
(Annals of Botany, 2016-07)Background and Aims Plant design refers to the construction of the plant body or its constituent parts in terms of form and function. Although neighbourhood structure is recognized as a factor that limits plant survival ... -
Nematode assemblages in four ecosystems of Parque Nacional del Agua, Costa Rica
(Elsevier (Países Bajos), 2022)The soil nematode fauna of five locations situated in Parque Nacional del Agua (PNA) in Costa Rica is characterized and analyzed. Four ecosystems were sampled in each location: primary (undisturbed) forest, secondary (naturally ... -
Neotropical flowering epiphyte diversity: local composition and geographic affinities
(Universidad Nacional, Costa Rica, 2013)Worldwide, the highest diversity of vascular epiphytic plants resides in the Neotropics. The general pattern of taxonomic composition of the neotropical epiphytic flora has been described, but information regarding the ... -
Nesting ecology of East Pacific green turtles at Playa Cabuyal, Gulf of Papagayo, Costa Rica
(2014-07)East Pacific green turtles (Chelonia mydas), often referred to as black turtles, are smaller and exhibit a lower reproductive output than other populations of green turtles in the Atlantic, Indian and Western Pacific Oceans. ... -
New records of Pteris (Pteridaceae) from the Neotropics
(Universidad Nacional (Costa Rica), 2014)As a result of studies on neotropical Pteris L., we report new records of Pteris albertiae and P. longifoliafrom Costa Rica; P. longipetiolulata from Costa Rica, Panama, Peru, Bolivia, and Venezuela; and P. muricatopedatafrom ... -
New records of snipe eels (Anguilliformes: Nemichthyidae) from the Pacific coast of lower Central America
(Marine Biodiversity Records vol.9 no.1 1-6 2016, 2016)Background: New records of occurrence of two snipe eels (Avocettina bowersii and Nemichthys scolopaceus), poorly known for the Pacific coast of Costa Rica and Panama are herein reported. Results: Specimens, 45 in total (28 ... -
New records, validated name, and redefinition in Azolla (Salviniaceae, Pteridophyta) from Costa Rica
(Universidad de Antioquia (Colombia), 2024)In studies of herbarium specimens and living material, we observed that several species in the genus Azolla Lam. are present in different wetlands of Costa Rica, which instigated the search for applicable names of each ... -
New sighting of seagrasses in the Eastern Tropical Pacific (Bahía Potrero, Costa Rica)
(Elsevier B.V., 2018-07-22)Seagrass meadows provide a multitude of ecosystem services, yet they are currently threatened and declining worldwide due to anthropogenic impacts. Current knowledge of seagrass presence in the Eastern Tropical Pacific ... -
New species and records of Cloeodes Traver, 1938 (Ephemeroptera, Baetidae) from Costa Rica
(Pensoft (Bulgaria), 2020)The nymph of Cloeodes danta sp. nov. is described from male and female nymphs collected from highland streams in the Caribbean Slope of the Costa Rica Central Volcanic Mountain Range. Adults are unknown. In addition, C. ... -
New species of Potamocoris Hungerford (Heteroptera, Potamocoridae) from Costa Rica and a key to the species
(Magnolia Press, 2014-11)A new potamocorid species, Potamocoris sitesi NEW SPECIES, with its two wing morphs (coleopteroid and macropterous) are described from Costa Rica. Descriptions are supported with photographs and illustrations. Parameres ... -
Nitrogen budget and fluxes in Colossoma macropomum ponds
(Blackwell Publishing Ltd., 2005-07-01)This study quanti¢ed the accumulation of nitrogen (N) in the water column, sediments, ¢sh and seepage water during a production cycle of Colossoma macropomum. By combining estimates of the deposition rates of uneaten feed, ... -
Nivel de desarrollo de las competencias científicas en estudiantes de secundaria de (Mendoza) Argentina y (San José) Costa Rica
(Organización de Estados Iberoamericanos, 2011)Una de las premisas que se maneja con más fuerza en la actualidad es que la sociedad organiza los procesos educativos formales con el propósito de integrar a todos sus miembros en la construcción de la tradición ... -
Norops biporcatus (Wiegmann, 1834). Color change during foraging
(Eagle Mountain Publishing (Estados Unidos), 2017-03)Reptiles use body colors for many purposes: camouflage, warning predators, mate choice, and thermoregulation, among others (Cooper and Greenberg, 1992). The body color of anoles results from a combination of three pigments ... -
Notas taxonómicas en Danaea Sm. (Marattiaceae) para Costa Rica, Panamá y Colombia
(Universidad Nacional (Costa Rica), 2013)Tres especies nuevas de Danaea Sm. son descritas aquí: D.epilithica A. Rojas, D. macrophylla A. Rojasy D. moralesiana A. Rojas. La primera especie difiere de Danaeanodosa (L.) Sm. por rizoma compacto y ascendente, frondas ... -
Notes of diet in highland snakes rhadinaea calligaster and rhadinella godmani (Squamata:Dipsadidae) from Costa Rica
(Sociedad Herpetologica Mexicana, 2020-11)Se reportan observaciones de la dieta de dos especies de serpientes elegantes: Rhadinaea calligaster fue observada depredando una salamandra del género Bolitoglossa; también se reportan observaciones sobre ... -
Novedades en Diplazium (Woodsiaceae) con frondas pinnado-lobuladas para el neotrópico
(Universidad de Antioquia, 2012)Dos especies nuevas de Diplazium con frondas pinnado-lobuladas son descritas aquí: D. pseudocarnosum y D. salazarianum. La primera especie de ellas puede distinguirse de Diplazium carnosum por presentar escamas del rizoma ... -
Novedades en Jamesonia Hook. & Grev.y Tryonia Schuettp., J. Prado & A.T. Cochran (Pteridaceae) para el Neotrópico
(Universidad Nacional (Costa Rica), 2017-12)Tres especies nuevas de Jamesonia Hook. & Grev. parael Neotrópico son descritas aquí: J. erecta A. Rojas, J. panamensis A. Rojas y J. retroflexa A. Rojas. La primera especie se caracteriza por ... -
Novedades en Moranopteris R.Y. Hirai & J. Prado (Polypodiaceae) para el Neotrópico
(Universidad Nacional (Costa Rica), 2017-12)Estudios en la familia Polypodiaceae para la flora Pteridophyta de Costa Rica ha permitido encontrar una especie nueva de Moranopteris R.Y. Hirai & J. Prado de los Tepúes y Mesetas en Colombia y Venezuela: Moranopteris ...