The coral reef condition in cerocok beach waters of painan, West sumatera province
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The research of coral reef was conducted in october 2013 in Tikus Island Waters ofBengkulu, Bengkulu Province. This research aim to analyse health of coral based on hardliving coral cover and its. The research used survey method by applying Line InterceptTrasect (LIT) which consisting of three main stations in depth 5 m.The type of coral reef in Tikus Island was fringging reef. Coral lifeform’s found inthe area were Acropora Branching (ACB), Acropora Digitate (ACD), Acropora Encrusting(ACE), Acropora Submassive (ACS), Acropora Tabulate (ACT) Coral Branching (CB), CoralMassive (CM), Coral Submassive (CS), Coral foliose (CF), Coral Encrusting (CE), and Coral MushRoom (CMR). The conditions of coral reef in the depth of 5 m was in good with 73,50percentage. Keywords : Tikus Island, Coral Reef, AcroporeKeywords:
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Study on coral recruitment in artificial reefs was carried out in Hari Island, Southeast Sulawesi. Data collection was conducted by calculating the number of genus colony and measuring coral size using visual census method equipped with scuba diving and an underwater camera. The construction of artificial reefs would vertically expand the profile of the survival of juvenile coral recruitment, where 95 new colonies of the recruitment had successfully been observed. Moreover, there were 10 genus of stony coral (Scleractinia) managed to be identified with the abundance proportion of Pocillopora, Acropora, Fungis, Leptoseris, Cynarina, Seriotopora, Acanthastrea, Favites, Montipora, Oxypora. The entire coral recruitment was dominated by genus Pocillopora reaching 80.0%. The coral recruitment in artificial reefs showed that there was potential coral recovery in the island.
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Pomacentridae
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Long-term changes in structure of fish communities on coral reefs infested by the coralfeeding starfish Acanthasterplanci were determined using 20 mZ visual transects.We censused a living coral reef consisting mainly of staghorn Acropora spp. at Saluyama Bay and a dead coral reef with low structural complexlty of coral branches (about 2 yr after A. planci infestation) at Amitori Bay, Iriomote Island (Ryukyu Islands, Japan) in September 1984.Two yr later, we recensused the dead coral reef, which had changed into a flat plain of unstructured coral rubble ('rubble reef').Mean numbers of species and individuals per transect severely decreased in the following order of reef types: (1) living reef (1984).( 2) dead reef (1984), and (3) rubble reef (1986).Correlated with these decreases in numbers were several patterns: (1) coral-polyp feeders completely &sappeared on both dead and rubble reefs, probably due to absence of food; (2) numbers of resident species and individuals decreased on the dead reef, perhaps due to decrease in living space or shelter associated with the reduction in structural complexity of coral branches; and (3) numbers of species and individuals of both resident and visitor fishes declined on the unstructured rubble reef, likely due to shortage of living space and food.
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The present work describes the first attempt at cultivating corals in the northern Arabian Gulf where seawater temperature ranges from 13 to 33°C and salinity exceeds 40 psu, exceeding normal lethal limits for coral survival. Despite the environmental extremes, natural recruitment of corals occurred in Sabah Al-Ahmad Sea City water ways during 2009, this encouraged an attempt to create an in situ coral nursery and establish a coral garden. A mid-water suspended coral PVC nursery (3 m2) was installed at 3.5 m depth for rearing staghorn coral, Acropora downingi for transplantation into artificial lagoons in Sabah Al-Ahmad Sea City. Fragments of Acropora downingi colonies damaged by boat anchoring were collected (n = 240) from patch reefs at Min Al Zour and Qit At Binaya, Kuwait. Coral nubbins obtained from fragments were glued individually to discs made of powdered Electric Arc Furnace Slag (EAF Slag) and marine grade cement. Nubbins showed up to 56% survival and a mean skeletal extension of 10.6–13.4 mm (SD ± 0.8) in 10 months. The nursery served as an artificial reef ecosystem. Transplantation of 116 Acropora downingi colonies was carried out (in June 2014 and June 2015) and monitored colonies (n = 6) attained an average geometric mean diameter (GMD) of 73.6 mm (SD ± 2.91) in one year. The first batch of A. downingi transplants (June 2014) showed a survival rate of 43% but the second batch (June 2015) showed 89.5% survival. Temperature induced mortality, detachment rate reduced after using marine grade cement and additive mixture instead of epoxy.
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Abstract. Kartikasari A, Pristianto T, Hanintyo R, Ampou EE, Wibawa TA, Borneo BB. 2021. Representative benthic habitat mapping on Lovina coral reefs in Northern Bali, Indonesia. Biodiversitas 22: 4766-4774. Satellite optical imagery datasets integrated with in situ measurements are widely used to derive the spatial distribution of various benthic habitats in coral reef ecosystems. In this study, an approach to estimate spatial coverage of those habitats based on observation derived from Sentinel-2 optical imagery and a field survey, is presented. This study focused on the Lovina coral reef ecosystem of Northern Bali, Indonesia to support deployment of artificial reefs within the Indonesian Coral Reef Garden (ICRG) programme. Three specific locations were explored: Temukus, Tukad Mungga, and Baktiseraga waters. Spatial benthic habitat coverages of these three waters was estimated based on supervised classification techniques using 10m bands of Sentinel-2 imagery and the medium scale approach (MSA) transect method of in situ measurement.The study indicates that total coverage of benthic habitat is 61.34 ha, 25.17 ha, and 27.88 ha for Temukus, Tukad Mungga, and Baktiseraga waters, respectively. The dominant benthic habitat of those three waters consists of sand, seagrass, coral, rubble, reef slope and intertidal zone. The coral reef coverage is 29.48 ha (48%) for Temukus covered by genus Acropora, Isopora, Porites, Montipora, Pocillopora. The coverage for Tukad Mungga is 8.69 ha (35%) covered by genus Acropora, Montipora, Favia, Psammocora, Porites, and the coverage for Baktiseraga is 11.37 ha (41%) covered by genus Montipora sp, Goniastrea, Pavona, Platygyra, Pocillopora, Porites, Acropora, Leptoseris, Acropora, Pocillopora, Fungia. The results are expected to be suitable as supporting data in restoring coral reef ecosystems in the northern part of Bali, especially in Buleleng District.
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The present study aimed to determine the current status of corals using the coral video transect (CVT) method in the east coast, west coast, and isolated areas of Tioman Island, Peninsular Malaysia. A total of 65 genera from 21 families of corals were identified, from which the scleractinian corals of Acropora, Montipora, and Porites were dominant in the coral assemblages. Nine reef sites were categorised as having 'good' (51.4%-60.3%) coral condition and four reef sites as having 'fair' (37.6%-49.2%) coral condition. This study concluded that the reefs around Tioman Island were in 'good' average coral condition and have high generic diversity with mixed coral morphological structures. The east coast and isolated areas had better live coral cover compared to the west coast area due to less coastal development and human impacts.
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