Bleaching Event/Sabah/Kota Kinabalu
reefprj at tm.net.my
reefprj at tm.net.my
Sat May 16 04:42:20 EDT 1998
CORAL REEF BLEACHING REPORT May 16th, 1998
Pulau Gaya [Gaya Island] - Sabah, Malaysia - Borneo; Kota Kinabalu
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Area Affected:
Observed area approximately 4 NMiles surrounding The Reef Project Bld.
Bld. @ 06 degrees / 00 min / 77 sec N | 116 degrees / 03 min / 06 sec E.
Weather Characteristics:
No wind. Sea over reef is calm. Cloud coverage at observation time at
level 5 [ARMDES Ref.]. Cloud cover at mid day at about 2/3 level.
The area has been affected by smoke haze for approximately 6 months.
Light intensity reaching the coral reefs was reduced during this period.
Weather/Wind changes have cleared the sky of haze for the last 3 to 4
days with today being the clearest with the strongest sunlight
intensity.
Observation Time: 1400 to 1530 hrs - reef tow survey by power boat
Reef Salinity & Water Temp.[THE REEF PROJECT Bld.] @ Observation Time:
35ppt / 32C
Observations:
Bleaching affecting about 30 to 40 % of all live coral coverage.
Large/thin branching Acropora colonies affected 90%. Bleaching appears
to be confined to 1 to 2 meters in depth. Brown Zoox. algae cloud
hovering over corals - rising up to within 1/2 meter from water surface.
Giant clam population maintained at The Reef Project reef flat are
affected by 20% bleaching as well. [Pop. @ 300 pcs.] Both T. derasa &
T. squamosa affected.
GClams & corals maintained in open system R&D raceways with greenhouse
plastic roofing and supplemented lighting - public aquarium displays not
affected.
Tide Information: @1230 hrs = 5.9 ft high tide
Reef Species Affected:
Acropora - long branching forms
Acropora - plate forms
Astreopora - on the tops facing the water surface
Porites cylindrica [massive reef margin colonies]
P. lutea - On the top portions primarily ["bald headed"]
Psammocora digitata - top portions
Fungia
Lobophyllia - the entire colony
Reported By: THE REEF PROJECT / Don Baker
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