Envoyé : mercredi 1 mai 2019 13:16
À : Corentin Decaen <;
Objet : RSOE EDIS – Event Report – Biological Hazard : [Lim Chu Kang] Singapore, Capital City, Singapore, Asia
Importance : Haute


RSOE Emergency and Disaster Information Service, Budapest, Hungary
Event report

May 1st 2019 11:13 AM – Biological Hazard – BH-20190501-67709-SGP

Base information

EDIS Code: BH-20190501-67709-SGP
Event date: May 1st 2019 11:13 AM
Category: Biological Hazard
Continent: Asia
Country: Singapore
State: Capital City
Settlement: Singapore
Location: [Lim Chu Kang]
1.4304941,103.7173325 (WGS84 decimal)

CAP Information

Category: Env - Pollution and other environmental
Urgency: Past - Responsive action is no longer required
Severity: Severe - Significant threat to life or property
Scope: Public - For general dissemination to unrestricted audiences
Certainty: Observed - Determined to have occurred or to be ongoing

Event details

The warmer weather in recent days may have caused thousands of fish to die in waters near Lim Chu Kang jetty and in nearby fish farms. The fish started surfacing in the sea about two or three days ago, said Mr Simon Ho, communications officer at the Singapore’s Fish Farmers Association. "Because of the higher temperatures these few days, there’s a lack of oxygen in the water. I believe the fishes died as a result," he noted. He added that fish farmers in the area sent motorboats out to remove and dispose of the dead fish. About four or five farms are said to have been affected with each reporting a loss of about one to two tonnes of fishon average – estimated to be worth from $3,000 to $4,000. Mr Ho said deaths like this one happen "one or two times in a year" and the phenomenon is "not unusual". He added that some fish farms have machines to replenish the oxygen in the water. Dead fish spotted at Lim Chu Kang jetty on July 18, 2016. Mr Ho, who has been a fish farmer for around 10 years, said it is possible to tell with experience that the oxygen conditions in the water are below normal levels. Fish behaviour can alert farmers as well. "When the oxygen in the water is insufficient, some of the more active fishes will move less than usual," he added. A mass death occurred in 2015 when around 600 tonnes of fish died in a span of two weeks due to a plankton bloom, with farms near the East Johor Straits the worst-hit. A bloom happens when the plankton multiply rapidly due to warmer temperatures in the water. Plankton suck oxygen from the water, threatening marine life. It is unclear if the fish deaths this time occurred because of the same reason. "These are costs that small fish farms like us have to bear from time to time," Mr Ho added. "With nature, you never can tell. Anything could happen."

Biohazard Information

Disease name: Mass Die-off (fish)
Biohazard level: Level 2 - Medium
Biohazard definitions: Bacteria and viruses that cause only mild disease to humans, or are difficult to contract via aerosol in a lab setting, such as hepatitis A, B, and C, influenza A, Lyme disease, salmonella, mumps, measles, scrapie, dengue fever, and HIV. "Routine diagnostic work with clinical specimens can be done safely at Biosafety Level 2, using Biosafety Level 2 practices and procedures. Research work (including co-cultivation, virus replication studies, or manipulations involving concentrated virus) can be done in a BSL-2 (P2) facility, using BSL-3 practices and procedures. Virus production activities, including virus concentrations, require a BSL-3 (P3) facility and use of BSL-3 practices and procedures", see Recommended Biosafety Levels for Infectious Agents.

Event map

Google Maps for the region of the event

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Catégories : GEO TELEX EDIS

Corentin DECAEN


Foundor of GeoAsia Spécialiste Chine/Japon

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