28 June 2017

Pulau Jong is alive!

Pulau Jong is among the last untouched islands in Singapore. It has not been reclaimed or directly impacted by development. Pulau Jong is what all our Southern islands looked like before they were reclaimed.
Living reefs of Pulau Jong
Dubbed the 'char siew pau' island because of its cute dumpling shape, Pulau Jong has a huge reef flat that is exposed at low spring tide. This reef flat together with the domed island is said to resemble the silhouette of a Chinese sailing junk, thus 'Jong'. Our last survey was in Jun 2016 at the height of mass coral bleaching. It was relief today, to see no mass bleaching. Although there appears to be fewer hard corals on the intertidal now.


Our last survey was in Jun 2016  when about 30-40% of the hard corals and soft corals that I saw were bleaching. As we were arriving I saw many corals in deeper waters bleaching. I also sense that there are much fewer leathery soft corals on the shore than before.
Mass coral bleaching at Pulau Jong in Jun 2016.
Today, I saw many large and  healthy leathery soft corals of various kinds.
Living reefs of Pulau Jong
Although it lies next to major shipping lanes, petrochemical plants, tank stores and Semakau Landfill, this tiny island is very much alive!
Living shores of Pulau Jong
Today, I saw a fewAcropora coral, one Branching montipora coral that were alright. Also one Pebble coral (it was pale and oddly coloured). I saw several Cauliflower corals that were alright. I did not see any Sandpaper coral.
I saw some large Disk corals corals that were alright, although one was very pale green with dead portions. I only saw one small Flowery disk coral and it was bleaching.
I saw a few Merulinid corals, most seemed alright but some had pale patches or dead portions.
I saw a few Small goniopora coral and a few Anemone coral colonies, they were not bleaching.
Most of the large corals were Boulder pore corals, they were not bleaching, although some were pale on top or had dead portions. I'm not sure if green is a normal colour for this coral.
I saw a few Asparagus flowery soft corals and they were alright. One was full of tiny orange brittle stars. I also saw some Spiky flowery soft corals and one Leathery sea fan.
I saw many Frilly anemones, they were not bleaching. I saw one Smooth frilly sea anemone and one Magnificent anemone. Richard found the Merten's carpet anemone.
The Mama Fluted giant clam is still there and she is fine! Giant clams can also bleach as they too harbour symbiotic algae and rely on them for food. Abel found another large Fluted giant clam there too!
Fluted giant clam (Tridacna squamosa)
There were sprinkles of Sickle seagrass, with fresh green leaf blades, not burnt or covered in epiphytes.
Sickle seagrass (Thalassia hemprichi)
Pulau Jong has a cloak of coastal forest, with special rare plants such as Delek Air and Sea teak.
Today, I noticed a gap in the forest.
Landslide at coastal forest on Pulau Jong
Probably caused by a landslide?
Landslide at coastal forest on Pulau Jong
Today, I saw a large fish trap stashed on the high shore. I disabled it. On our last trip in Jun 2016, we did find a fish trap on the high shore but didn't have time to disable it as we rushed off as a thunderstorm gathered nearby.
Large fish trap stashed on Pulau Jong
Pulau Jong lies near the petrochemical plants on Pulau Bukom, producing a plume of emissions in the clear blue sky today.
Emissions over Pulau Bukom from Pulau Jong
Pulau Jong is one of the existing natural shores that may be impacted by the landuse plan by the Ministry of National Development released in Jan 2013 in response to the Populations White Paper with a 6.9 million population target. The dotted margined blue areas are "Possible Future Reclamation". The other shores impacted by this plan include Pulau Hantu, Terumbu Pempang Darat, Terumbu Pempang Tengah and Terumbu Semakau.
Let's hope the last of our unspoilt islands, Pulau Jong will stay safe until we return next year.

Posts by others on this trip


Others on this trip: Mr Kuet, Joelle Lai

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