Listar Ciencias básicas por título
Mostrando ítems 497-516 de 3098
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Caribbean-Wide, Long-Term Study of Seagrass Beds Reveals Local Variations, Shifts in Community Structure and Occasional Collapse
(2014)The CARICOMP monitoring network gathered standardized data from 52 seagrass sampling stations at 22 sites (mostly Thalassia testudinum-dominated beds in reef systems) across the Wider Caribbean twice a year over the period ... -
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 ... -
Cariotipos de las principales serpientes coral (Elapidae: Micrurus) de Costa Rica
(1979)Se describen los cariotipos de las tres especies de serpientes de coral (Elapidae: Micrurus) más abundantes en Costa Rica: M. nigrocinctus, M. alleni y M. mipartitus. M. nigrocinctus presenta dos poblaciones cariotípicas ... -
Carrion Feeding By Spiderlings Of The Cob-Web Spider Theridion evexum(Araneae, Theridiidae)
(2007)The use of carrion to feed spiderlings has never previously been observed in spiders. Here we show that the theridiid Theridion evexum Keyserling 1884 stored dead insectan prey for up to one week prior to the emergence of ... -
Caulerpa sertularioides, a green alga spreading aggressively over coral reef communities in Culebra Bay, North Pacific of Costa Rica
(2005)Caulerpa sertularioides, is a widespread chlorophyte, that can be confused with C. taxifolia, a highly invasive algae. C. sertularioides has erect, feather-like, occasionally branched fronds; its branchlets are opposite, ... -
Causas del aislamiento reproductivo en dos especies de Macrohaltica (Coleoptera, Chrysomelidae)
(2015-09-04)Prefacio Una de las principales implicaciones que tiene el concepto biológico de especie (CBE) es que al definir a la especie como un grupo reproductivamente aislado, supone la interrupción del flujo génico con otros ... -
Cálculo de la evaporación en Costa Rica mediante el método FAO-56
(2014-06)Con el método FAO-56 se calcula la evapotranspiración de referencia para un cultivo de referencia “De una altura de 0,12m con una resistencia superficial de 70 s/m y un albedo de 0,23”. Posteriormente se calcula el coeficiente ... -
Cálculo del corrimiento al rojo fotométrico de galaxias submilimétricas alrededor de galaxias de núcleos activos
(2022)Las galaxias submilimétricas (SMGs) son fuentes que se detectaron por primera vez en los años 90 y se volvieron de mucho interés para la comunidad astronómica debido a sus altas tasas de formación estelar y sus altos ... -
Cellulose-Enriched Microbial Communities from Leaf-Cutter Ant (Atta colombica) Refuse Dumps Vary in Taxonomic Composition and Degradation Ability
(2016-03-21)Deconstruction of the cellulose in plant cell walls is critical for carbon flow through ecosystems and for the production of sustainable cellulosic biofuels. Our understanding of cellulose deconstruction is largely limited ... -
Censo de pelícanos pardos de la Reserva Natural Absoluta Cabo Blanco
(2010-11-30)El pelicano pardo o buchón es el único pelicano común en Costa Rica y el único que reside de forma permanente en la RNACB (Reserva Natural Absoluta de Cabo Blanco). Es un ave de color parduzco con la cabeza y el cuello ... -
Central America [in State of the Climate in 2008]
(2009)The global mean temperature in 2008 was slightly cooler than that in 2007; however, it still ranks within the 10 warmest years on record. Annual mean temperatures were generally well above average in South America, northern ... -
Central America [in State of the Climate in 2009]
(2009)For this region, seven stations from the following five countries were analyzed: Belize, Honduras, Costa Rica, Panama, and Guatemala. -
Central America [in State of the Climate in 2010]
(2010)Several large-scale climate patterns influenced climate conditions and weather patterns across the globe during 2010. The transition from a warm El Niño phase at the beginning of the year to a cool La Niña phase by ... -
Central America [in State of the Climate in 2011]
(2012-07)Large-scale climate patterns influenced temperature and weather patterns around the globe in 2011. In particu- lar, a moderate-to-strong La Niña at the beginning of the year dissipated during boreal spring but reemerged ... -
Central America [in State of the Climate in 2012]
(2013-08)For this region, nine stations from five countries were analyzed. The stations located on the Caribbean slope are: Phillip Goldson International Airport, Belize; Puerto Barrios, Guatemala; Puerto Lempira, ... -
Central America [in State of the Climate in 2013]
(2014-07)In 2013, the vast majority of the monitored climate variables reported here maintained trends established in recent decades. ENSO was in a neutral state during the entire year, remaining mostly on the cool side of ... -
Central America [in State of the Climate in 2014]
(2015-07)Most of the dozens of essential climate variables monitored each year in this report continued to follow their long-term trends in 2014, with several setting new records. Carbon dioxide, methane, and nitrous oxide the ... -
Central America [in State of the Climate in 2015]
(2016)The text discusses the analysis of weather stations in the region, including stations on both the Caribbean and Pacific slopes. Data from the NOAA/NCEI GHCN daily precipitation dataset for 2015 showed significant missing ... -
Central America [in State of the Climate in 2016]
(2017)Central America experienced anomalies in temperature and precipitation in 2016. Mean temperatures were higher than average, particularly in Puerto Barrios, Choluteca, and San José. The increase in mean temperatures was due ...