Biodiversity

Badak LNG routinely conducts the transplantation of coral reefs since 2013 using the bioreeftech

Fishes

The marine around Badak LNG area is a home for various saltwater fishes. In this world, there are over thirty thousand different species of fish, and they are the most numerous vertebrates. There are many ways to catch fish, sometimes fisherman just want to catch a lot fish in a short time with less energy consumed. This kind of idea has grown into illegal fishing techniques, such as bombing and trawling. These dangerous technique could kill the new born fishes and decrease the population rapidly. Badak LNG has committed to protect these biota from every threat. The protection are needed to ensure the stability and continuity of these fishes.

 

Overall, the fish observed consists of 35 genera in Buoy putih, Kedindingan, and Segajah point, while the total of 1361 individuals found. White Buoy has the most genera with 32 genera, Kedindingan with 18 genera, and Segajah with 11 genera. The community structure of reef fish was found to indicate the diversity index value in moderate conditions throughout the location. The largest diversity index is at the Kedindingan followed by white Buoys and Segajah. These three observation locations have a good uniformity index criteria enough.

 

The fishes Observed in Buoy Putih, Kedindingan, and Segajah can be seen in Table below.

No.

Fishes Species (Genus)

Buoy Putih

Kedindingan

Segajah

1.

Thalassoma

10

6

3

2.

Scolopsis

23

1

2

3.

Dascylus

39

1

 

4.

Heniochus

2

 

 

5.

Amphiprion

4

 

 

6.

Halichoeres

7

4

1

7.

Acanthurus

20

4

 

8.

Bodianus

14

7

 

9.

Chromis

17

1

1

10.

Scarus

32

7

4

11.

Chlorurus

2

 

 

12.

Coris

3

 

 

13.

Plectorhinchus

1

4

 

14.

Chaetodon

4

3

 

15.

Zebrasoma

2

 

 

16.

Abudefduf

5

1

 

17.

Centropyge

2

1

 

18.

Zanclus

3

 

 

19.

Neopomacentrus

7

1

 

20.

Siganus

4

 

46

21.

Labroides

3

2

1

22.

Lutjanus

58

2

173

23.

Lethrinus

1

 

 

24.

Centriscus

19

 

 

25.

Selaroides

187

 

 

26.

Canthigaster

1

 

 

27.

Pomacentrus

1

2

 

28.

Coradion

3

 

 

29.

Caesio

2

17

 

30.

Archamia

397

 

 

31.

Apogon

59

 

1

32.

Leiognathus

3

 

 

33.

Arothron

 

 

1

34.

Plotosus

 

 

128

35.

Rhyncobatus

 

1

 

Individual Number

935

65

361

Taxa Number

32

18

11

Biodiversity Index (H')

2,0757

2,4783

1,1827

Uniformity Index (E')

0,5989

0,8574

0,4932

Dominance Index (C')

0,2334

0,1181

0,3719

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Coral Reefs

Badak LNG marine area can be considered as “a hidden paradise”. In the beauty of waving blue water on the surface, lives a forest of coral reef deep beneath it.  Reefs are formed of colonies of coral polyps held together by calcium carbonate. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which consist of sea anemones and jellyfish. Most reefs grow better in warm, shallow, clear, sunny and agitated water. Corals are the main component of sea ecosystems. Their existence help the surrounding marine biota to gain a lot of food and protection. Some coral reefs attract planktons and smaller fishes which consumed by marine biota. For protection, coral reefs help disperse incoming waves and offer a home for some fishes like clownfish. They like to hide to avoid predators. Some invertebrates like ref crab, shrimp, and lobster are tend to playing around the coral reefs.

Badak LNG has rehabilitated coral reefs with transplantation techniques and artificial coral reefs made of concrete in the Segajah, White Buoy and Kedindangan waters. 17 forms of overall coral growth were identified in all survey locations. The location of White Buoy was identified as 11 forms of growth with a life percentage of 16.2% with a damaged status, the location of Kedindingan identified 10 forms of growth with a percentage of coral life of 57.4% with good status while Segajah location identified 1 type of growth with a percentage of 39% with moderate status.

 

 

Coral reefs observed in Buoy Putih, Kedindingan, and Segajah can be seen in Table below.

 

No.

 Lifeform

Location

Buoy Putih

Kedindingan

Segajah

1.

Dead coral with algae (DCA)

32,40

30,80

8,00

2.

Soft Coral (SC)

2,00

23,80

-

3.

Coral mushroom (CMR)

6,40

-

-

4.

Other (OT)

13,20

0,80

1,00

5.

Sand (S)

34,00

-

45,00

6.

Coral encrusting (CE)

2,20

-

-

7.

Sponge (SP)

4,20

-

-

8.

Coral Foliosa (CF)

2,80

3,00

-

9.

Acropora encrusting (ACE)

2,00

-

-

10.

Acropora Brancing (ACB)

0,40

23,40

39,00

11.

Acropora submassive (ACS)

0,40

2,20

-

12.

Macroalgae (MA)

-

-

4,00

13.

Dead coral (DC)

-

-

4,00

14.

Silt (Si)

-

9,80

-

15.

Turf-algae (TA)

-

1,20

-

16.

Coral Massive (CM)

-

3,60

-

17.

Acropora Tabulate (ACT)

-

1,40

-

Life Coral (LC) Percentage

16,2

57,40

39,00

Status

Bad

Good

Moderate

 

 

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