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Search Results

You searched for Boyd. We found 200 results.

  • Light penetration in water

    https://www.globalseafood.org/advocate/light-penetration-in-water/?_rt=MTA5fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=ce52ce2e8f

    …presence of dissolved organic matter and suspended solids further impedes light penetration, and different types of solids preferentially absorb at different wavelengths. Boyd, Categories of light rays and colors, Table…

  • Silicon, diatoms in aquaculture

    https://www.globalseafood.org/advocate/silicon-diatoms-in-aquaculture/?_rt=MTEwfDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=ac393a0961

    …silicates. Boyd, Neutralizing values of pure compounds,Table 1 CompoundNeutralizing Value (%) Calcium silicate 86 Sodium silicate 82 Calcitic limestone (agricultural limestone) 100 Calcium hydroxide (hydrated lime) 135 Calcium oxide (burnt…

  • Hydrogen sulfide toxic, but manageable

    https://www.globalseafood.org/advocate/hydrogen-sulfide-toxic-but-manageable/?_rt=MTExfDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=9980f0784e

    …pH, the concentration would be less by a factor of 0.9. Boyd, Factors for estimating hydrogen sulfide concentration, Table 1 Temperature (° C) pHTemperature (° C) 16Temperature (° C) 18Temperature…

  • Nitrite toxicity affected by species susceptibility, environmental conditions

    https://www.globalseafood.org/advocate/nitrite-toxicity-affected-by-species-susceptibility-environmental-conditions/?_rt=MTEyfDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=13789e999a

    …are presented in Table 1. Boyd, Published 96-hour LC50s, Table 1 Common Name96-hour LC50 Freshwater Common carp 88.0 mg/L Catla 117.0 mg/L Mitten crab 25.9 mg/L Narrow-clawed crab 29.4 mg/L…

  • Accuracy of custom water analyses varies

    https://www.globalseafood.org/advocate/accuracy-of-custom-water-analyses-varies/?_rt=MTEzfDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=292df20088

    …concentrations similar to expected concentrations, the charge balance was 1.03, and the total concentration of measured ions was similar to the estimated total ion concentration. Boyd, Results of analyses of…

  • On-farm trials test new products, methods

    https://www.globalseafood.org/advocate/on-farm-trials-test-new-products-methods/?_rt=MTE0fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=117c7038f4

    …in treatment 2, and it would be unwise to conclude simply from looking at the data that treatment 2 was different from either the control or treatment 1. Boyd, Example…

  • Appraising pond liners for shrimp culture

    https://www.globalseafood.org/advocate/appraising-pond-liners-shrimp-culture/?_rt=MTE1fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=c0fb6fd7e2

    …check Asian Shrimp News, 2nd Quarter, 1994, Published by Asian Shrimp Culture Council, Issue No. 18. And Boyd, C.E., Tucker, C.S., (2014). Lined Ponds. In Handbook for Aquaculture Water Quality,…

  • Evaluación de revestimientos plásticos de estanques para el cultivo del camarón

    https://www.globalseafood.org/advocate/evaluacion-de-revestimientos-plasticos-de-estanques-para-el-cultivo-del-camaron/?_rt=MTE2fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=4311621ee4

    …esta herramienta de producción. Para información adicional, los lectores interesados ​​pueden verificar Asian Shrimp News, 2nd Quarter, 1994, Published by Asian Shrimp Culture Council, Issue No. 18. And Boyd, C.E.,…

  • Effective management avoids gas bubble trauma

    https://www.globalseafood.org/advocate/effective-management-avoids-gas-bubble-trauma/?_rt=MTE3fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=7d051186ae

    …gas (or air) in water is 100 percent. Boyd, Concentrations of individual gases, Table 1 Water Temp. (° C)Concentration (mg/L) NitrogenConcentration (mg/L) OxygenConcentration (mg/L) ArgonConcentration (mg/L) Carbon DioxideConcentration (mg/L) Air…

  • Evaporation affected by sunlight, temperature, wind

    https://www.globalseafood.org/advocate/evaporation-affected-by-sunlight-temperature-wind/?_rt=MTE4fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=6a106170eb

    …vapor pressure (Table 1). Saturation vapor pressure increases with rising temperature. Boyd, Saturation vapor pressure, Table 1 Temperature (° C)Saturation Vapor Pressure (mm Hg) 4.579 5 6.543 10 9.209 15…

  • Settling basin design, operation

    https://www.globalseafood.org/advocate/settling-basin-design-operation/?_rt=MTE5fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=f9144fe156

    …larger than 0.004 mm is quite long and seldom practical for large inflow rates. Boyd, Settling velocities and times, Table 1 Particle Diameter (mm)Terminal Settling Velocity (m/second)Time to Settle 1…

  • Multiple methods for phytoplankton assessment

    https://www.globalseafood.org/advocate/multiple-methods-for-phytoplankton-assessment/?_rt=MTIwfDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=ecb900c8fa

    …Boyd, Assessment of Secchi disk, Table 1 Secchi Disk Reading (cm)Comments Less than 20 cm Pond is too turbid. If pond is turbid with phytoplankton, there will be problems with…

  • Liming materials for aquaculture

    https://www.globalseafood.org/advocate/liming-materials-for-aquaculture/?_rt=MTIxfDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=f0639f335d

    …liming materials. Limestone may be classified based on its calcium and magnesium concentrations (Table 1). Boyd, Calcium and magnesium concentrations, Table 1 TypeCalcium (%)Magnesium (%) Pure calcite 40.0 Calcitic limestone…

  • Dissolved oxygen requirements in aquatic animal respiration

    https://www.globalseafood.org/advocate/dissolved-oxygen-requirements-in-aquatic-animal-respiration/?_rt=MTIyfDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=d0133c0873

    …and 9.07 mg/L dissolved oxygen and water at 30 degrees-C with 8.30 mg/L dissolved oxygen. Boyd, Solubility of oxygen in freshwater at different temperatures, Table 1 Temperature (° C)Dissolved Oxygen…

  • Aquaculture ponds hold carbon

    https://www.globalseafood.org/advocate/aquaculture-ponds-hold-carbon/?_rt=MTIzfDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=3280a48ed5

    …sequestered by natural lakes and inland seas (Table 1). It is much less, however, than the amounts of carbon buried in river reservoirs and agriculturally eutrophic impoundments. Boyd, Comparison of…

  • Cage design, placement affect water quality

    https://www.globalseafood.org/advocate/cage-design-placement-affect-water-quality/?_rt=MTI0fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=03d9d11c9b

    …and a 4-meter-diameter, 4-meter-deep circular cage both have a potential flushing efficiency of 25 percent. As the sizes of circular or rectangular cages increase, flushing efficiency declines further. Boyd, Lateral…

  • Assessing, reducing pond seepage

    https://www.globalseafood.org/advocate/assessing-reducing-pond-seepage/?_rt=MTI1fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=b4cd44f0af

    …clay. The average seepage rate was 23.1 cm/month. Table 1 classifies seepage categories for earthen ponds. Normal seepage was considered to be less than 20 cm/month. Boyd, Seepage class categories,…

  • Trace metals toxic at high concentrations

    https://www.globalseafood.org/advocate/trace-metals-toxic-at-high-concentrations/?_rt=MTI2fDd8Ym95ZHwxNzY1MDg4NDcw&_rt_nonce=cc1a413f8d

    …parent minerals is low pH. Low redox potential also greatly increases the solubility of iron, manganese and a few other trace metals. Boyd, Typical concentrations and maximum safe concentrations, Table…

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