Metro Manila News
Low oxygen level caused Manila Bay fish kill
Poor levels of dissolved oxygen and higher levels of ammonia and phosphates than the standard level caused the recent fish kills off the coastal areas of Las Piñas and Parañaque cities.
On Oct. 10, the Bureau of Fisheries and Aquatic Resources (BFAR) conducted an assessment after about one to two tons of dead fish were found floating off Las Piñas and Parañaque.
“The water quality test conducted in three sampling areas by BFAR’s National Fisheries Laboratory Division and BFAR (Region) 4A shows poor levels of dissolved oxygen and higher levels of Ammonia and Phosphates than the standard level,” BFAR said in a statement Friday.
According to its chart, dissolved oxygen should be greater than five parts per million (ppm) but tests showed it was only 0.70 to two ppm.
There was also a high level of ammonia at 3.59 ppm when it was supposed to be less than 0.05 ppm.
Ammonia is a chemical compound produced naturally from decomposing organic matter, including plants, animals and animal wastes.
However, BFAR said the ammonia in the water samples, “might have also come from agricultural, domestic and industrial wastes."
Phosphates, on the other hand, are one of the primary nutrient sources for many forms of algae and could come from sources like domestic sewage and runoff from agricultural land, urban areas, and green areas.
These chemicals, at high levels, may cause detrimental effects to the fish which may result in a fish kill.
Scientific examination conducted by the BFAR 4A (Calabarzon) Regional Fisheries Protection and Law Enforcement Group also showed that “fish mortality was not caused by blast fishing.”
The BFAR said it will continuously monitor water quality in the area and provide technical assistance to the local government unit of Las Piñas and Parañaque in the implementation of necessary management measures during a fish kill such as proper disposal of dead fish.
This is to ensure that dead fish will not reach the market and prevent sanitary-related diseases from happening, it said.
The Philippine Competition Commission (PCC) ordered ride-sharing company Grab Philippines to refund P5.05 million to its riders for breaching its voluntary pricing commitments. “The PCC has imposed a total fine of PHP23.45 million on Grab for ...
After a soft patch in the first half of this year, the Philippines’ GDP growth is expected to strengthen in the remainder of 2019 and in 2020, underpinned by government spending catching up with targets, and the recent monetary policy easing, a...
The Department of Environment and Natural Resources (DENR) said it expects to deploy more than 1,000 estero rangers to 711 barangays this year. DENR Secretary Roy Cimatu instructed the estero rangers to “bring about change” in the next s...
The National Capital Region Police Office (NCRPO) will deploy 8,000 cops on November 25 to secure local and foreign delegates of the 30th Southeast Asian Games (SEA Games). NCRPO acting director, Brig. Gen. Debold Sinas said they will deploy the pol...
Personnel of the Eastern Police District (EPD) participated in the Fourth Quarter National Simultaneous Earthquake Drill at its headquarters in Barangay Malinao, Pasig City. Col. Erson Digal, EPD deputy director for administration, spearheaded the c...
A senator called on the government to monitor the retail prices of egg and chicken. Senator Imee Marcos said the cost of small eggs reached more than PHP6 apiece, with a tray of 30 pieces priced at PHP180 and up instead of the suggested retail ...