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Constantly changing pH unavoidable, completely normal
https://www.globalseafood.org/advocate/constantly-changing-ph-unavoidable-completely-normal/Prof. Boyd: pH changes seldom result in mortality Aquaculture ponds should have waters with pH above 6.5 and sufficient alkalinity either naturally or because of liming. Aside from water temperature…
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Cambio constante de pH inevitable, completamente normal
https://www.globalseafood.org/advocate/cambio-constante-de-ph-inevitable-completamente-normal/Prof. Boyd: los cambios en el pH rara vez resultan en mortalidad Los estanques acuícolas deben tener aguas con un pH superior a 6,5 y suficiente alcalinidad, ya sea de…
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Dissolved oxygen dynamics
https://www.globalseafood.org/advocate/dissolved-oxygen-dynamics/Prof. Boyd: Proper management most important aspect of aquaculture pond water quality management Mechanical aeration in ponds can prevent a deficit between net diffusion and net phytoplankton oxygen production. Photo…
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Dinámica del oxígeno disuelto
https://www.globalseafood.org/advocate/dinamica-del-oxigeno-disuelto/Prof. Boyd: La gestión adecuada del oxigeno disuelto el aspecto más importante de la gestión de la calidad del agua de los estanques acuícolas La aireación mecánica en estanques puede…
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Land use for aquaculture production
https://www.globalseafood.org/advocate/land-use-for-aquaculture-production/…1 MT of marine fishmeal. However, calculations of the ocean area necessary to produce fishmeal will not be addressed here. Boyd, Average age of plant meals, Table 1 ProductSeed Yield…
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Salinity in aquaculture, Part 1
https://www.globalseafood.org/advocate/salinity-in-aquaculture-part-1/…Boyd, salinity, Table 1 Salinity methodSalinity values Common (ppt) 10 20 30 40 Practical (unitless) 9.999 19.98 29.997 39.996 Absolute (mg/kg) 9.96 19.78 29.46 38.98 Reference-composition (mg/kg) 10.05 20.07 30.14…
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Salinidad en la acuacultura, Parte 1
https://www.globalseafood.org/advocate/salinidad-en-la-acuacultura-parte-1/…(Tabla 1). No parece haber diferencias apreciables. La salinidad común y la salinidad práctica son casi idénticas. Boyd, salinidad, Tabla 1 Método de salinidadValores de salinidad Común (ppt) 10 20…
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Salinity in aquaculture, Part 2
https://www.globalseafood.org/advocate/salinity-in-aquaculture-part-2/…have stems calibrated in salinity units. Boyd, salinity pt. 2, Table 1 Degrees-CSalinity (0 g/L)Salinity (10 g/L)Salinity (20 g/L)Salinity (30 g/L)Salinity (40 g/L) 0.99984 1.0080 1.0160 1.0241 1.0321 5 0.99997…
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U.S. study finds turbidity useful In TSS, ISS estimates
https://www.globalseafood.org/advocate/u-s-study-finds-turbidity-useful-in-tss-iss-estimates/…the opinions of Schwartz and Boyd (1994b) and Boyd et al. (2000) that TSS concentration is likely to be the key variable in aquaculture pond effluent regulations. Particulate organic matter…
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Salinidad en la acuacultura, Parte 2
https://www.globalseafood.org/advocate/salinidad-en-la-acuacultura-parte-2/…y cuanto mayor es la densidad, más alto se eleva el tallo sobre la superficie. Boyd, salinidad pt. 2, Table 1 Grados-CSalinidad (0 g/L)Salinidad (10 g/L)Salinidad (20 g/L)Salinidad (30 g/L)Salinidad…
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Anion-cation balance in water
https://www.globalseafood.org/advocate/anion-cation-balance-in-water/…determined by dividing its concentration in mg/l by its milliequivalent weight in mg/milliequivalent. Milliequivalent weights for major ions are listed in Table 1. Boyd, Milliequivalent weights of major ions. Table…
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Energy use in aquaculture pond aeration, Part 2
https://www.globalseafood.org/advocate/energy-use-in-aquaculture-pond-aeration-part-2/Internal combustion engines, drive trains, potential for energy conservation Based on Prof. Boyd’s calculations, the efficiency of shrimp pond aeration could be improved to save a considerable quantity of energy….
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Uso de energía en la aireación de estanques acuícolas, Parte 2
https://www.globalseafood.org/advocate/uso-de-energia-en-la-aireacion-de-estanques-acuicolas-parte-2/Motores de combustión interna, trenes de transmisión, potencial para la conservación de energía Según los cálculos del profesor Boyd, la eficiencia de la aireación de estanques de camarones podría mejorarse…
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What’s the difference between biological and chemical oxygen demand?
https://www.globalseafood.org/advocate/whats-the-difference-between-biological-and-chemical-oxygen-demand/Prof. Boyd discusses BOD and COD and explains the importance of these water quality parameters Prof. Boyd discusses the important water quality parameters biological and chemical oxygen demand and their…
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Electrical conductivity of water, part 1
https://www.globalseafood.org/advocate/electrical-conductivity-water-part-1/Professor Boyd: Principles and measurement of an important production parameter The electrical conductivity of water provides an assessment of the total concentration of dissolved ions in water, and is an…
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Understanding water quality variables for aquaculture
https://www.globalseafood.org/advocate/water-quality-variables/Professor Boyd clears up confusion related to units of measure Some modern dissolved oxygen meters have an option for measuring percentage oxygen saturation. Picture by Darryl Jory. Editor’s note: This…
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Comprensión de la demanda de oxígeno de los alimentos acuícolas
https://www.globalseafood.org/advocate/comprension-de-la-demanda-de-oxigeno-de-los-alimentos-acuicolas/…del alimento para producir 1 kg de los animales cultivados varía considerablemente debido a las diferencias en los valores FCE típicos para diferentes especies. Boyd, Demanda de Oxigeno del Alimento,…
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Conductividad eléctrica del agua, parte 2
https://www.globalseafood.org/advocate/conductividad-electrica-del-agua-parte-2/Profesor Boyd: Examinando la importancia de un parámetro de producción importante La conductividad eléctrica del agua proporciona una evaluación de la concentración total de iones disueltos en el agua, y…