The ABCs of the fish pen, fishpond industries
The commercial feed and chicken manure not eaten by the fish merely sink to the bottom and decompose, consuming more of the oxygen dissolved ... gates to let fresh water in, the fish die and there is hell to pay. The same situation does not exist among ...
The effects of dissolved nutrients on coastal waters. Part 2
When microalgae bloom and increase ... with aerobic decomposition of the algae by bacterial processes.The oxygen levels decrease and the dying bloom cause hypoxic conditions, which is defined as a reduction of dissolved oxygen (DO) in the water to levels ...
LOBSTER INCREASE IS TAPERING OFF
Officials of both states anticipate a 15 percent decrease ... said an apparent increase in the amount of nutrients in the water is fertilizing various species of plankton. As the vegetative growth dies, its decomposition uses more oxygen.
Monitoring Pond Water Quality to Improve Production
Each water quality parameter alone can directly affect the animals´ health. Exposure of shrimp and fish to improper levels of dissolved oxygen ... and reduce its ability to carry oxygen. An increase in CO 2 may decrease the pH to a value below 6.5 ...
Chemical memory of seawater: Scientists examine biomolecules dissolved in the ocean and read them like a history book
For example, scientists can say how old the dissolved ... withstands the decomposition process for a period of up to 5000 years. This is an extremely unusual process from a chemical point of view because in principle the oxygen-rich water column should ...