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A checklist of the amphibians and reptiles of Río Macho Biological Station, Provincia de Cartago, Costa Rica
(Check List vo.11 no.6 article 1784 1-10 2015, 2015-11-02)We provide a checklist of the amphibians and reptiles of Río Macho Biological Station (RMBS), Costa Rica. During a period of a year (2012–2013) we conducted visual and acoustic surveys in a natural mature forest plot (>50 ... -
A dynamic simulation model for the blooming of Oscillatoria agardhii in a monomictic lake
(Elsevier, 1995-01-15)The occurrence of phytoplankton blooms is a common problem in water bodies. The quantitative description of the algal population growth is of primary importance to understand the mechanisms which lead to these phytoplankton ... -
A simple method for short-term storage and transportation of spermatophores of Pacific white shrimp (Litopenaeus vannamei)
(Hidrobiológica vol.26 no.1 9-14 2016, 2016)The development of a shipping method for spermatophores of the white shrimp Litopenaeus vannamei would open new opportunities for sharing and improving genetic resources of shrimp worldwide. Seventy spermatophores were ... -
Acuicultura de pargo la mancha Lutjanus guttatus ( Steindachner,1869) en Costa Rica dentro de un enfoque ecosistémico
(Universidad Nacional (Costa Rica), 2009)La sobreexplotación pesquera y la búsqueda de alternativas ante la pobreza crónica han llevado a explorar el campo de la maricultura; por medio de un enfoque ecosistémico se abrieron dos procesos paralelos: una estrategia ... -
Amenaza de contaminación del agua subterránea en el sector norte del acuífero Barva, Heredia, Costa Rica
(2014-11)Most of the water for human consumption and the development of economic activities in the Central Valley of Costa Rica is supplied by the aquifers located in this region. Nevertheless, many of these activities are located ... -
Aspectos biometricos del bagre Arius Furthii Steindachner (Pisces Ariidae), colectado en punta Morales, Golfo de Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 1984-07)Se analizan estadísticamente algunos parámetros biométricos de 257 ejemplares de Arius furthii (Ariidae), colectados en una zona de playa y otra de manglar en Punta Morales, Puntarenas, Costa Rica. Las colectas se realizaron ... -
Behavioral plasticity mitigates risk across environments and predators during anuran metamorphosis
(Behavioral Ecology, 2013)Most animals metamorphose, changing morphology, physiology, behavior and ecological interactions. Size- and habitat-dependent mortality risk is thought to affect the evolution and plastic expression of metamorphic timing, ... -
Biodeterioration and biodegradation of Roman monuments: A comparison of the current status of 18th century paintings by the Canalettos
(2014)Worldwide there is an urgent need to monitor the conditions of monuments affected by biodeterioration and biodegradation, but no long term data exist for most of them. Here is an exception in the case of certain Roman ... -
Biomass allocation and gas exchange are affected by light conditions in endangered Cedrela salvadorensis (Meliaceae) seedlings
(Universidad de Costa Rica, 2016)The determination of favorable light habitat conditions per species and life stage is transcendental, for both ex situ and in situ conservation strategies of endangered forest tree species, and for their utilization as ... -
Caracterización de los sistemas operacionales, modalidades y artes de pesca utilizados para la captura de la langosta Panulirus Gracilis (Streets, 1871) en Guanacaste, Costa Rica
(Universidad Nacional (Costa Rica), 2010-12)Se describen las dos modalidades de pesca que se utilizan en la captura de la langosta del Pacífico Panulirus gracilis (Streets, 1871) en la región de Santa Cruz, Guanacaste, Costa Rica. Estas modalidades son el buceo a ... -
Characterization of the coral communities and reefs ot two previously underscribed locations in the upwelling region of Gulf of Papagayo Costa Rica
(Universidad Nacional (Costa Rica), 2010)In the seasonal upwelling region of Gulf of Papagayo (Northern Pacific coast of Costa Rica), we evaluated and described two previously poorly known coral habitats, Punta Cacique and Bahía Guacamaya. Both localities differed ... -
Chemical tradeoffs in seed dispersal: defensive metabolites in fruits deter consumption by mutualist bats
(Oikos, 2015-09-08)Although fleshy fruits function primarily to attract seed dispersers, many animal‐dispersed fruits contain potentially toxic secondary metabolites. These metabolites can provide defense against seed predators and pathogens, ... -
Cianobacterias bentónicas marinas en el Caribe central y sur de Costa Rica
(Universidad Nacional (Costa Rica), 2012-12)Las cianobacterias comprenden un grupo de microorganismos del dominio Bacteria (Woese et al. 1990) poco estudiado en Costa Rica. Los escasos trabajos realizados abordan temáticas relacionadas con la ocu-rrencia de ... -
Comparison of fatty acids profile of the gonads and eggs of Lutjanus guttatus(Perciformes: Lutjanidae) obtained from wild and captive broodstock
(Universidad Nacional (Costa Rica), 2020-01)The proportions of fatty acids present in eggs and gonads of wild and captive Lutjanus guttatus(Steindachner, 1869) were evaluated to assist in obtaining nutritional information necessary to ... -
Composición y estructura forestal del Corredor Biológico Interurbano Río Tibás, Heredia, Costa Rica
(2018-01)This research had as objective to determine the forest structure and floristic composition of the “Tibás River Interurban Biological corridor” region. We delimit three elevational zones/strata in the area and established ... -
Conceptualization and validation of a dynamic model for the simulation of nitrogen transformations and fluxes in fish ponds
(Elsevier, 2002-11-01)Nitrogen is a key element in aquatic environments and an important pond management variable. In aquaculture systems, nitrogen accumulation eventually leads to a deterioration of the system. The interactions between various ... -
Crecimiento compensatorio y producción en las fases de precría, preengorde y engorde comercial del camarón blanco, Litopenaeus vannamei, en Costa Rica
(Universidad Nacional (Costa Rica), 2015-12)Este estudio evaluó el crecimiento compensatorio y la producción de Litopenaeus vannamei en cultivos comerciales, durante el 2014, en fincas del Golfo de Nicoya, Costa Rica. Se compararon el crecimiento y la producción en ... -
Descripción histológica de la oogénesis y espermatogénesis del camarón de cultivo, Litopenaeus vannamei
(Revista de Biología Marina y oceanografía, 2013)This research describes detailed stages of oogenesis and spermatogenesis at histological level in the white shrimp of the western Pacific, Litopenaeus vannamei. Both processes were studied in cultured organisms under ... -
Desove espontáneo, ontogenia y crecimiento en cautiverio de Cynoscion squamipinnis (Perciformes: Sciaenidae)
(Revista de Biologia Tropical Vol.64 No.3 991 - 1005, 2016-04-04)Las corvinas son especies de interés comercial que han sido sobreexplotadas en el Golfo de Nicoya, Costa Rica. El objetivo de este estudio fue describir por primera vez, el desove espontáneo y la ontogenia de las larvas ... -
Determinación del flujo de agua para la biorremediación en sistemas acuícolas recirculados utilizando tapetes microbianos construidos
(2015-09-01)La cantidad de agua necesaria en los sistemas de producción aumenta con la Intensificación; se han establecido tasas económicas de uso. Esta situación ha obligado a los productores a diseñar sistemas que les permitan seguir ...
