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Effect of different chemical treatments on nutritional and antinutritional properties of coffee pulp
(Elsevier, 2002)
Different chemical treatments were tested to improve the nutritional value of coffee pulp (CoP):
(1) alkali, NaOH solutions of 5 and 10% for 24 and 48 h; (2) a combination of acid and alkali, with
first a treatment with ...
Horizontal transport and seasonal distribution of nutrients, dissolved oxygen and chlorophyll-a in the Gulf of Nicoya, Costa Rica: a tropical estuary
(Elsevier, 2002)
The distributions of salinity, temperature, nutrients, dissolved oxygen and chlorophyll-a (chl-a) concentrations in the
Gulf of Nicoya, Costa Rica, during the rainy and dry seasons are presented. In the rainy season, the ...
Growth, feed utilization and nutrient digestibility in tilapia fingerlings (Oreochromis aureus Steindachner) fed diets containing bacteria-treated coffee pulp
(Universidad Nacional, Costa Rica, 2002)
The effectiveness of bacteria treated-coffee pulp (BT-CoP) in fish diets was evaluated in a feeding trial with Oreochromis aureus (Steindachner) fingerlings. Five diets were formulated to contain 0%, 6%, 12%, 18% and 24% ...
Abundancia, diversidad y categoría ecológica de los peces en estero damas y estero Palo Seco, Costa Rica
(Universidad Nacional (Costa Rica), 2002)
Se trabajó de junio de 1986 a febrero de 1987 en una estación de muestreo en el estero Palo Seco y en dos en el estero Damas (Damas y San Bosco), Pacífico Central, Costa Rica. La temperatura del agua no presentó diferencias ...
Peces dulceacuícolas de la isla del caño: distribución y aspectos biogeográficos
(Universidad Nacional (Costa Rica), 2002)
Se informa la presencia de nueve especies de peces en los sistemas dulceacuícolas de la Isla del Caño (08°42’4’’N, 83°53’20’’W), de las cuales cinco constituyen nuevos registros para la isla. Rivulus hildebrandi y ...
Descripción de la pesquería artesanal de peces, en tres puertos pesqueros de la IV región, Coquimbo, Chile
(Universidad Nacional (Costa Rica), 2002)
Se realizó un seguimiento de la pesca artesanal de peces en las caletas de Coquimbo, Guanaqueros y Tongoy en la IV región, Chile, entre junio de 1995 y junio de 1996. El estudio comprendió un análisis de las especies ...
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 ...
Organic matter sedimentation and resuspension in tilapia (Oreochromis niloticus) ponds during a production cycle
(2002-07-01)
The rates of sedimentation and resuspension of organic carbon and total nitrogen were
measured in earthen fishponds, based on nutrient input, water quality parameters and fish size and biomass. Material collected in ...