Environment
Simple Settling Chambers Aid Solids Management In Biofloc System
A study that examined the effects of removing suspended solids using side-stream settling cham-bers in a superintensive biofloc shrimp system found the chambers
- Managing High pH in Freshwater Ponds
- Interactions of pH, Carbon Dioxide, Alkalinity and Hardness in Fish Ponds
- Manage pH Cycles To Maintain Animal Health
- Total Alkalinity, Total Hardness
- Measuring Dissolved Oxygen Concentration in Aquaculture
- Dissolved Oxygen Management In Aquaculture
- Feeding Affects Pond Water Quality
- Measuring Circulation, Mixing in Ponds
Environment
Feed Efficiency Indicators for Responsible Aquaculture
Environmentally responsible, profitable aquaculture has its foundation in efficient resource use. Feed usually is the most costly item in aquaculture production
Lake, Reservoir Characteristics Affect Cage Culture Potential
Factors that include area, volume and flushing rates interact to affect water quality in lakes and reservoirs.
Dissolved-Oxygen Requirements In Aquatic Animal Respiration
In aquatic animals, blood hemo-globin unloads oxygen to the tissue fluids. Coldwater species have higher dissolved-oxygen concentration requirements
Drying, Liming, Other Treatments Disinfect Pond Bottoms
Drying pond bottoms between cycles is the first step toward disinfection. Puddles and wet areas should receive lime or another effective treatment to eliminate
Embodied Resource Use In Feed-Based Aquaculture
In life cycle analysis of aquaculture, there is a danger of the entire array of embodied resources and impacts being assigned to the production facility
Interpretation of Water Analysis Reports for Fish Culture
Some aquaculture producers and pond owners choose to submit water samples to a water quality labora-tory for analysis.
Fertilization of Fish Ponds
When ponds are fertilized, nutri-ents stimulate the growth of microscopic plants in the water (phytoplankton). Phytoplankton is food for other organisms
Characterization and Management of Effluents from Aquaculture Ponds in the Southeastern US
Nearly all commercial aquaculture in the southeastern United States is conducted in earthen ponds. Good production from ponds is encouraged by using
Light Penetration in Water
The depth of the photic zone, the layer of water receiving 1% or more of incident light, can be estimated with Secchi disk visibility.
Water Temperature in Aquaculture
Aquaculture ponds should not be deeper than about 2.0 m to minimize the probability of thermal stratification.
Mechanical Water Circulation Aids Pond Water Quality
Mechanical water circulation can prevent stratifica-tion and provide more dissolved oxygen near pond bottoms
Overview: Mechanical Pond Aeration
Productivity increases in aquaculture ponds in re-sponse to nutrient inputs of fertilizer and feed. These in-puts, however, increase the demand for oxygen