Organic matter sedimentation and resuspension in tilapia (Oreochromis niloticus) ponds during a production cycle

 

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Detalles Bibliográficos
Autores: Jiménez, Ricardo, Verdegem, Marc, Zamora Castro, Jorge, Verreth, Johan
Formato: artículo
Fecha de Publicación:2002
Descripción: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 sediment traps and soil samples were analyzed for organic carbon, total nitrogen, iron and aluminum concentrations. A dilution analysis method was used to differentiate between sedimented and resuspended particles. The rates of sedimentation and resuspension estimated from total solids increased during the experiment, ranging from 49.8 to 218.1 g/m2 per day in the case of sedimentation and from 39.2 to 160.0 g/m2 per day in the case of resuspension. Although fish weight increased through time, the relative resuspension did not change significantly, ranging from 42 to 47% of the total collected material. Total solids sedimentation and resuspension rates were highly correlated (P 0.01) to fish weight and biomass, chlorophyll-a, total suspended solids, total feed input and Secchi disk visibility.
País:Repositorio UNA
Institución:Universidad Nacional de Costa Rica
Repositorio:Repositorio UNA
Lenguaje:Inglés
OAI Identifier:oai:null:11056/18300
Acceso en línea:http://hdl.handle.net/11056/18300
Palabra clave:FISH POND
SEDIMENT
SEDIMENTATION RATE
RESUSPENSION RATE
TOTAL NITROGEN
ORGANIC CARBON
PECES
SEDIMENTACIÓN
ESTANQUES PISCICOLAS
CULTIVO DE PECES