Constantly changing pH unavoidable, completely normal
Prof. Claude Boyd discusses the importance of pH for farmed fish and shellfish, the normal and natural fluctuations and how aquaculture systems can manage it.
Cambio constante de pH inevitable, completamente normal
El Prof. Claude Boyd discute la importancia del pH para los peces y mariscos cultivados, las fluctuaciones normales y naturales y cómo los sistemas acuícolas pueden manejarlo.
Dissolved oxygen dynamics
Dissolved oxygen management is the most important requirement of aquaculture pond water quality. DO concentration below 3 mg/L is stressful to shrimp.
Dinámica del oxígeno disuelto
El manejo del oxígeno disuelto es el requisito más importante de la calidad del agua de los estanques acuícolas. La concentración de OD por debajo de 3 mg/L es estresante para el camarón.
Land use for aquaculture production
Space requirements for aquaculture include the culture water area and associated physical culture facilities as well as the land used to raise plant-based feed ingredients.
Salinity in aquaculture, Part 1
Prof. Boyd discusses the various definitions of salinity as an environmental factor of importance which, in aquaculture settings, can be easily measured.
Salinidad en la acuacultura, Parte 1
El profesor Boyd discute las diversas definiciones de salinidad como un factor ambiental de importancia que, en entornos acuícolas, puede medirse fácilmente.
Salinity in aquaculture, Part 2
Prof. Boyd on how to measure salinity in aquaculture, examining electrical conductivity (specific conductance), density, chlorinity and refractive index.
U.S. study finds turbidity useful In TSS, ISS estimates
Total suspended solids concentration is time-consuming to measure, but turbidity has been used to estimate TSS concentrations in some types of effluents.
Salinidad en la acuacultura, Parte 2
El Prof. Boyd discute cómo medir la salinidad en la acuacultura, examinando la conductividad eléctrica (conductancia específica), la densidad, la clorinidad y el índice de refracción.
Anion-cation balance in water
The ionic composition of inland well water can vary from suitable to toxic to cultured animals. Reliable data on concentrations of major cations (calcium, magnesium, potassium, and sodium) and major anions (bicarbonate, sulfate, and chloride) is therefore important in the management of waters for inland shrimp farming.
Energy use in aquaculture pond aeration, Part 2
Prof. Boyd writes that his calculations suggest that the efficiency of shrimp pond aeration could be improved with internal combustion engines and drive trains.
Uso de energía en la aireación de estanques acuícolas, Parte 2
El Profesor Boyd escribe que sus cálculos sugieren que la eficiencia de la aireación de estanques de camarones podría mejorarse con motores de combustión interna y trenes de propulsión.
What’s the difference between biological and chemical oxygen demand?
Prof. Boyd explores the commonly used and relevant aquaculture water quality terms biological and chemical oxygen demand (BOD and COD).
Electrical conductivity of water, part 1
The electrical conductivity of water, usually called specific conductance or simply conductivity, is an important property of water frequently measured in aquaculture systems, and provides an assessment of the total concentration of dissolved ions in water.
Understanding water quality variables for aquaculture
Confusion can result because of differences in units (dimensions) used to report water quality variables, which can lead to faulty assessments. Professor Claude Boyd discusses issues related to units of measure for some common water quality values in aquaculture.
Comprensión de la demanda de oxígeno de los alimentos acuícolas
Los alimentos acuícolas manufacturados, si se gestionan incorrectamente, pueden resultar en una demanda indeseable de oxígeno que puede reducir los niveles de oxígeno disuelto y causar contaminación a través de efluentes, y estrés a los animales cultivados.
Conductividad eléctrica del agua, parte 2
La conductividad eléctrica del agua se mide con frecuencia en los sistemas acuícolas y se toma como un indicador del grado de mineralización (concentración iónica total) del agua.