Search Results

In Prof. Boyd's first-ever article for the Advocate, he discusses how important environmental codes of practice are to aquaculture. 

In his latest article, Professor Boyd discusses various aspects of the origin and decomposition of organic matter in various aquaculture systems. 

En su más reciente artículo, el profesor Boyd analiza varios aspectos del origen y la descomposición de la materia orgánica en varios sistemas acuícolas. 

Keep adequate concentrations of dissolved oxygen in the culture water by balancing stocking and feeding rates with the amount of mechanical aeration applied. To prevent anaerobic conditions at the sediment-water interface, aerators should be positioned to promote the flow of oxygenated water across the pond bottom. 

The Coriolis effect has no bearing on aerator placement and aquaculture pond management. The most important consideration with mechanical aeration is to provide a sufficient amount to maintain adequate dissolved oxygen concentration. 

Aquaculture systems should be operated with attention to reducing the environmental waste load, which requires the use of high-quality feeds, prevention of overfeeding and maintenance of good water quality. 

Inland shrimp culture has numerous advantages – improved biosecurity, lower cost of land and reduced conflicts with other users of common resources like land and water – and will continue to expand into new areas. 

Agricultural limestone is widely used to improve pH and alkalinity in aquaculture ponds. There is considerable use of lime in aquaculture to disinfect pond bottoms and water, to attempt to control pH, and various other reasons. 

Los sistemas acuícolas deben ser operados con atención a la reducción de la carga de residuos ambientales, lo que requiere el uso de alimentos de alta calidad, la prevención de la sobre-alimentación y el mantenimiento de una buena calidad del agua. 

El cultivo del camarón tierra adentro tiene numerosas ventajas – mejora la bioseguridad, el costo más bajo de la tierra, y reduce los conflictos con otros usuarios de recursos comunes como la tierra y el agua – y seguirá expandiéndose hacia nuevas áreas. 

La piedra caliza agrícola se utiliza ampliamente para mejorar el pH y la alcalinidad en los estanques acuícolas. Hay un uso considerable de la cal en la acuacultura para desinfectar los fondos y agua de estanques, para intentar controlar el pH, y varias otras razones. 

Changes in atmospheric carbon dioxide concentration should have little effect on rising alkalinity concentration in aquaculture systems. Climate change is of greater concern in freshwater aquaculture than is an increase in alkalinity. 

Los cambios en la concentración atmosférica de dióxido de carbono deberían tener poco efecto en el aumento de la concentración de alcalinidad en los sistemas acuícolas. El cambio climático es una preocupación mayor en la acuacultura de agua dulce que el aumento de la alcalinidad. 

A few anions and cations, and un-dissociated silicic acid represent the largest fraction of dissolved inorganic solids in water. The total concentration of ions is called the salinity. The total dissolved-solids concentration usually is roughly equal to salinity in freshwater. Unlike seawater, freshwater varies greatly in salinity and proportions of individual ions. Calcium and bicarbonate are dominant ions in river water, but sodium and chloride are dominant in seawater. Water contains many other inorganic substances, as well as many trace elements. 

Aquaculture certification programs reduce the environmental impacts of aquaculture and avoid negative impacts on biodiversity, but no single indicator of biodiversity can be used as a standard in aquaculture certification. 

The creation and application of reference tables for acceptable concentration ranges of physical and chemical water quality variables for culture organisms would be challenging due to the differing tolerances found among the many farmed species. 

Los programas de certificación acuícola reducen los impactos ambientales de la acuacultura y evitan los impactos negativos sobre la biodiversidad, pero no se puede usar un solo indicador de biodiversidad como un estándar en la certificación acuícola. 

Copper is used for control of the blue-green algae responsible for off-flavors in aquaculture animals, treating diseases and parasites, and avoiding cage net fouling. Although copper is an essential nutrient for plants and animals, an excess can negatively affect the environment and human health.