SCLERACTINIAN CORAL RECRUITMENT DENSITY IN COASTAL WATER OF BALOK, PAHANG, MALAYSIA

2015 ◽  
Vol 77 (25) ◽  
Author(s):  
Mohd Husaini Rani ◽  
Shahbudin Saad ◽  
Mohd Fikri Akmal Khodzari ◽  
Rafindde Ramli ◽  
Muhamad Hamizan Yusof
Keyword(s):  
Scleractinian Coral ◽  
Artificial Reef ◽  
Coral Recruitment ◽  
Parent Population ◽  
Percentage Cover ◽  
Recruitment Pattern ◽  
Settlement Plate ◽  
Spat Settlement ◽  
Wallis Anova ◽  
Video Transect

Study on scleractinian coral recruitment is important in understanding the mechanisms that regulate their population and the resilience of coral reef communities to disturbance. This study aims to investigate temporal recruitment density of scleractinian coral at selected remote area in Balok, Pahang. Two types of settlement plates, which are terra-cotta tiles and artificial reef, were deployed at three stations to determine the recruitment density. The retrieval of the settlement plate was done at every three months interval started from March to September 2014. A total of 159 coral recruits were counted with mean recruitment densities on both terracotta tiles was 1.52 ± 0.65 and artificial reef plate was 4.37 ± 1.84 respectively. Recruitment was dominated by Platygyra (36%) followed by Porites (32%), Fungia (17%), Turbinaria (7%), Acropora (2%), Stylopora (2%), Montipora (1%), Leptoria (1%), Favites (1%) and Echinophyllia (1%). Kruskal - Wallis ANOVA test shown that recruitment densities varied significantly with plate’s orientation (p < 0.05), but not with sampling stations, type of substrates and month retrieval.  Artificial reef plate has better recruitment densities compared to terra-cotta tiles. Coral spat settlement and recruitment patterns were consistent with adult coral distributions. The percentage cover of adult coral varied within the three stations. A total of 33 coral genera from 13 families were recorded during coral video transect survey with Station 3 showed the highest H’ (2.35). Meanwhile, Station 2 showed higher EH’ indexes with 0.82. Therefore, results of this study is important because coral recruitment pattern reflect its adult coral population, and if it closely monitored and harvested sustainably, the survival of parent population could be increased for successful breeding.

scholarly journals Spatial and Temporal Variation of Scleractinian Coral Recruitment in Balok Coastal Waters and Bidong Island, Malaysia

2021 ◽  
Vol 6 (1) ◽  
pp. 1-14
Author(s):  
Fikri Akmal Khodzori ◽  
Shahbudin Saad ◽  
Husaini Rani
Keyword(s):  
Coral Reef ◽  
Temporal Variation ◽  
Environmental Conditions ◽  
Coastal Waters ◽  
Scleractinian Coral ◽  
Larval Settlement ◽  
Artificial Reef ◽  
Spatial And Temporal Variation ◽  
Coral Recruitment ◽  
Recruitment Patterns

Understanding coral recruitment is important as increasing of regional decline of coral reef worldwide. This study aimed to investigate the spatial and temporal coral recruitment patterns around reef sites in Balok coastal waters and Bidong Island, Malaysia. Recruitment density was determined by quantifying number of coral recruits settled on the terra-cotta tiles and artificial reef settlement plates. In Balok coastal waters, a total of 159 coral recruits were counted with 0.09 ± 0.03 n/m2 mean recruitment density per plate, while in Bidong Island, a total of 319 coral recruits were counted with 0.19 ± 0.02 n/m2 mean recruitment density per plate. Coral recruits were dominated by genus Pocillopora followed by Stylopora and Seriatopora in Bidong. Meanwhile in Balok, genus Platygyra was dominant coral recruits followed by Porites and Fungia. Additionally, minor spawning event was predicted in Balok coastal waters in September due to increase number of Platygyra coral. Recruitment density varied significantly between locations, types of settlement plates and plate’s orientation at both study areas. Current findings highlighted the significant use of artificial reef plates to increase the chances of larval settlement. This research also provides important information in assessing coral resilience towards different environmental conditions between coastal and sheltered reef areas.

Scleractinian coral recruitment patterns at Salt River submarine canyon, St. Croix, U.S. Virgin Islands

Coral Reefs ◽  
1984 ◽  
Vol 3 (2) ◽  
pp. 69-76 ◽  
Author(s):  
Caroline S. Rogers ◽  
H. Carl Fitz ◽  
Marcia Gilnack ◽  
James Beets ◽  
John Hardin
Keyword(s):  
Scleractinian Coral ◽  
Submarine Canyon ◽  
Virgin Islands ◽  
Coral Recruitment ◽  
Salt River ◽  
Recruitment Patterns

scholarly journals Comparison of 3D Coral Photogrammetry and Coral Video Transect for Coral Lifeform Analysis Using Low-cost Underwater Action Camera

2020 ◽  
Vol 37 (1) ◽  
Author(s):  
Zuhairi Bin Ahmad ◽  
Muhammad Idzham Helmi Bin Mohd Jinah ◽  
Shahbudin Bin Saad
Keyword(s):  
Statistical Analysis ◽  
Survey Methods ◽  
Low Cost ◽  
Scientific Research ◽  
Data Sets ◽  
Percentage Cover ◽  
Future Studies ◽  
Scuba Divers ◽  
Coral Morphology ◽  
Video Transect

This research analysed the use of 3D Coral Photogrammetry (CP) and Coral Video Transect (CVT) images collected from SCUBA divers using a low-cost underwater action camera to examine the coral lifeform. A comparison was made between data sets obtained using both methods on nine transects with different coral lifeform compositions and percentage cover within an area of 4 × 7 m. The comparison of the statistical analysis for CPCe revealed that there were no significant differences (p < 0.05) between CP and CVT photos where dead corals (p = 0.006), sand (p = 0.011), and unknown (p = 0.002) are present. Additionally, the coral value (p = 0.131) between CP and CVT was not significant. CP was capable of producing prominent branching, massive, and plate coral morphology results. This suggests that survey methods using low-cost action cameras for 3D Coral Photogrammetry would yield appropriate results in terms of coral lifeform detection. Hypothetically, by improving camera quality, it will yield a higher accuracy of 3D coral images that are suitable for use in scientific research and management. Other benefits of using CP include the possibilities for future studies with 3D coral surveys using remotely operated vehicles, less field time, and 3D coral seabed information.

Effect of suspended sediment on fertilization success in the scleractinian coral Pectinia lactuca

2012 ◽  
Vol 92 (4) ◽  
pp. 741-745 ◽  
Author(s):  
Paul L.A. Erftemeijer ◽  
Mary Hagedorn ◽  
Michael Laterveer ◽  
Jamie Craggs ◽  
James R. Guest
Keyword(s):  
Suspended Sediment ◽  
Scleractinian Coral ◽  
Coral Species ◽  
Suspended Sediment Concentration ◽  
Sediment Concentration ◽  
Fertilization Success ◽  
Coral Recruitment ◽  
Short Term ◽  
Coral Spawning ◽  
Fine Suspended Sediment

The effect of increased levels of suspended sediment on fertilization success in the scleractinian coral Pectinia lactuca was investigated in a laboratory experiment following a mass coral spawning event on reefs off Singapore. Egg–sperm bundles were collected from tank-spawned coral colonies collected from the field several days prior to the anticipated mass spawning. Eggs and sperm from each colony were separated and distributed systematically across replicated treatments (N = 9) with three concentrations of fine suspended sediment. Spawning and embryo development in Pectinia lactuca followed a pattern similar to other scleractinian coral species. There was a significant effect of increased suspended sediment concentration on fertilization success (P < 0.05). Both high- (169 mg l−1) and medium- (43 mg l−1) suspended sediment treatments decreased fertilization success compared to controls. These results imply that increased turbidity levels (whether chronic, such as in the waters around Singapore, or short-term, caused by a dredging operation)—when coinciding with the coral spawning season—may affect the reproductive success of corals and compromise coral recruitment and recovery of degraded reefs.

Coral assemblages and physico-chemical characteristics of the Whitsunday Islands: evidence of recent community changes

1999 ◽  
Vol 50 (5) ◽  
pp. 427 ◽  
Author(s):  
R. van Woesik ◽  
T. Tomascik ◽  
S. Blake
Keyword(s):  
Scleractinian Coral ◽  
Coral Species ◽  
Coral Cover ◽  
Benthic Communities ◽  
Coral Recruitment ◽  
Coral Abundance ◽  
Physico Chemical ◽  
Coral Communities ◽  
River Mouths ◽  
Negative Relationships

Benthic communities were assessed and 22 environmental variables were monitored at seven leeward localities (L1ŒL7) in the Whitsunday Islands, Queensland, Australia. L1 was near the Proserpine and O’Connell river mouths and L7 ~80 km north of the river mouths. Distinct physico Œchemical and biological gradients were evident. Sparse scleractinian coral communities, dominated by faviids, Montipora spp. and encrusting Porites colonies, were present at L1, L2 and L3, whereas diverse reef-building communities, dominated by Acropora spp., were more common at and beyond L4. The number of coral recruits (age <6 months) did not differ significantly among localities, suggesting that coral recruitment was near random and that the environment shapes the adult community from those recruits. The study demonstrates strong negative relationships between chlorophyll a and the following: percentage coral cover, coral species richness and coral abundance. The reef-building capacities of the coral communities and the extent of Holocene reef development were inconsistent at L2 and L3, which is interpreted as a sign of anthropogenic effects.

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