HARD CORAL (SCLERACTINIA) RECRUITMENT BASED ON THE GEOMORPHOLOGY ZONE IN BINTAN ISLAND WATERS, RIAU ISLANDS

The health of coral reef ecosystems can be seen through the emergence of coral recruitment. Aim of this research was to compared the scleractinia coral recruitment list based on genus, life form, and variations in size of the scleractinia coral recuit in the waters of Kampung Baru Lagoi and Teluk Bakau Village, Bintan Regency by geomorfology zone. The research was conducted using a Purposive sampling method in consideration of the presence of scleractinia coral in reef flat and reef slope areas using a 1x1 m square frame mounted along a 70 m transverse line parallel to the shoreline. Research has found 164 colonies of 24 genus dominated by Favia and Favites. Based on the most extensive life form of Coral encrusting and Coral massive variations in size 4.5-6 cm or medium category. The results of t test showed that the geomorphological differences in the research locations did not have a significant impact on the abundance of corals recruitment

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Recruitment of hard coral after coral bleaching in Krueng Raya Water, Aceh Besar

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/869/1/012043 ◽

2021 ◽

Vol 869 (1) ◽

pp. 012043

Author(s):

M Ulfah ◽

A Siswanto ◽

S Agustina ◽

S Purnawan

Keyword(s):

Coral Reef ◽

Coral Bleaching ◽

Sampling Method ◽

Systematic Sampling ◽

Hard Coral ◽

Coral Recruitment ◽

Coral Genus ◽

Study Results ◽

Coral Reef Ecosystems ◽

Systematic Sampling Method

Abstract Krueng Raya waters is an area that has a distribution of coral reef ecosystems. This study aims to determine the recruitment of hard corals after coral bleaching Krueng Raya waters, Aceh Besar District. This research was conducted in April 2017 in Krueng Raya, Aceh Besar. Data were collected at three observation stations using a systematic sampling method using a 1x1 m quadratic transect. Based on the study results, coral recruitment was obtained from eight families and 13 genera (Acropora, Cetenactis, Diploastrea, Favia, Favites, Galaxea, Goniastrea, Helliopora, Leptastrea, Montastrea, Pavona, Pocillopora, and Porites). Where the most abundant coral genus found was from the genus Pocilopora and Porites (16 coloni/10m2). while the station with the highest colony abundance was at station 3 with 28 colonies/10m2.

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Diversity, Distribution and Abundance of Scleractinian Coral in District-based Marine Protected Area Olele, Bone Bolango, Gorontalo - Indonesia

KnE Life Sciences ◽

10.18502/kls.v1i1.683 ◽

2017 ◽

Vol 3 (4) ◽

pp. 14

Author(s):

Akbar Reza ◽

Retno Peni Sancayaningsih

Keyword(s):

Coral Reef ◽

Protected Area ◽

Scleractinian Coral ◽

Life Form ◽

Marine Protected Area ◽

Health Assessment ◽

Reef Slope ◽

Mortality Index ◽

Coral Reef Ecosystems ◽

Coral Health

Despite its status as District-Based Marine Protected Area, studies pertaining coral reef biodiversity never been conducted in Olele that located in the Gulf of Tomini, biodiversity hotspot in the Coral Triangle. Hence, we aims to investigate diversity, distribution and abundance of scleractinian coral, underpinning the health of reef ecosystems. This study was conducted using Line Intercept Transect on three research stations which were divided into three main zonations, reef flat (3 m depth), upper reef slope (10 m depth) and reef slope (18 m to 20 m depth). Fifty meters long transect were laid in each zonation, thus total transect were nine. The results showed that there were 35 species of scleractinian coral from 12 families. Each zonation has a different pattern of abundance and dominant life form. Based on coral health assessment using Coral Mortality Index (CMI) and the ratio between living and dead coral coverage, coral reef ecosystems in Olele were in healthy condition with the range value 0.29 ± 0.1 and 3.60 ± 1.14. This preliminary study should be used as a basic reference for database and novel direction of conservation management strategy in District-Based Marine Protected Area Olele.Keywords: district-based marine protected area; olele; lit; sclecartinia;life form; zonation.

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Pair formation, home range, and spatial variation in density, size and social status in blotched foxfaceSiganus unimaculatuson an Okinawan coral reef

PeerJ ◽

10.7717/peerj.1280 ◽

2015 ◽

Vol 3 ◽

pp. e1280 ◽

Cited By ~ 5

Author(s):

Atsushi Nanami

Keyword(s):

Coral Reef ◽

Home Range ◽

Spatial Variation ◽

Reef Flat ◽

Pair Formation ◽

Size Class ◽

Reef Slope ◽

Rocky Reef ◽

Seagrass Bed ◽

Agonistic Display

The present study examined pair formation, spatial pattern of home range and spatial variation in density, size and social status of blotched foxfaceSiganus unimaculatus(family Siganidae) on an Okinawan coral reef. Of 32 pairs sampled for sexing, 31 (96.9%) were heterosexual and showed size-assortative pairing. Developed ovaries were found in April and July, whereas oocytes were immature in August, September and February. Heterosexual pairing was found in both reproductive and non-reproductive periods. Home range size tended to be positively related to fork length (FL). The degree of home range overlap for same size class pairs was smaller than that for different size class pairs. The intraspecific behavior when two pairs approached each other was categorized as ‘attack,’ ‘agonistic display’ and ‘no interactions,’ and the frequency of agonistic behaviors (“attack” or “agonistic display”) was significantly greater than “no interactions.” Underwater observations at a seagrass bed, a rocky reef flat and a sheltered reef slope revealed that the mean FL was significantly smaller at the sheltered reef slope (4–13 cm) than at the rocky reef flat (>13 cm). No individuals were found in the seagrass bed. Most individuals less than 6 cm FL were solitary, whereas most individuals over 7 cm FL were paired. Density was significantly greater on the sheltered reef slope than on the rocky reef flat.

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POPULATION STRUCTURE OF Acanthaster planci ON THE REEF FLAT AT THE SOUTHERN PART OF BUNAKEN ISLAND

JURNAL PESISIR DAN LAUT TROPIS ◽

10.35800/jplt.1.1.2013.1625 ◽

2013 ◽

Vol 1 (1) ◽

pp. 34

Author(s):

Patritia Napitupulu ◽

Hanny Tioho ◽

Agung Windarto

Keyword(s):

Population Structure ◽

Coral Reef ◽

Reef Flat ◽

Adult Population ◽

Acanthaster Planci ◽

Night Time ◽

Coverage Area ◽

Reef Management ◽

Coral Reef Management ◽

Coral Reef Ecosystems

The information on population structure of Acanthaster planci in Bunaken National Park (BNP) is urgent to be presented in order to be considered in decision making especially on coral reef management in BNP. The objectives of this study was to examine the population structure of A. planci, represented by the diameter and weight, number of arms, while the density, distribution and types of coral predation by reef animals in the Southern part of Bunaken Island also observed. Data were collected at the three locations namely, front reef flat (FRF), middle reef flat (MRF) and back reef flat (BRF) with total coverage area of 100 x 50 meters. Sixty two individuals (41 at night and 21 at day time) were found with a body diameter ranging between 14 – 28 cm, whereas body weight ranged from 80 – 700 gr, with the number of arms between 9 until 17. The density of A. planci during day time was 0.0042 ind/m2, while the night time was 0.0082 ind/m2, moreover the animal is generally spread aggregated. The results of this study indicated that the population of A. planci in BNP was an adult population with density is still relatively normal, despite an alert sign for the sustainability of coral reef ecosystems in the BNP.

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VERTICAL DISTRIBUTION AND DENSITY OF CORAL FUNGIIDAE ON MALALAYANG WATERS

JURNAL PESISIR DAN LAUT TROPIS ◽

10.35800/jplt.1.1.2013.1628 ◽

2013 ◽

Vol 1 (1) ◽

pp. 42

Author(s):

Friska Mampuk ◽

Hanny Tioho ◽

Janny D. Kusen

Keyword(s):

Vertical Distribution ◽

Reef Flat ◽

Reef Slope ◽

Hard Substrate ◽

Coral Recruitment ◽

Free Living

Fungiidae known as a solitaire coral, attachment and also free living and has capability of individual move for migrate. Their mobility allows them to expand the area, providing a hard substrate for coral recruitment and shelter for other invertebrates. The objective of this study was to examine the density and distribution of fungiid corals in Malalayang waters. The data were collected from September to December 2012 at four different areas. The results of this study showed that the highest density of fungiid corals were occurred on the front reef study site and mostly by Fungia danai (0,62 ind/m2), compared with other species such as Herpolitha limax (0,25 ind/m2), F. paumotensis (0,19 ind/m2), F. fungites (0,18 ind/m2), F. granulosa (0,18 ind/m2) and with an aggregated pattern of distribution. Fungiid corals found in this study were mostly relatively more on the reef flat compared to the reef slope.

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Kelimpahan Mikroplastik Pada Sedimen Ekosistem Terumbu di Taman Nasional Laut Karimunjawa

Jurnal Kelautan Tropis ◽

10.14710/jkt.v24i1.9865 ◽

2020 ◽

Vol 24 (1) ◽

pp. 1-6

Author(s):

Sakti Imam Muchlissin ◽

Prastyo Abi Widyananto ◽

Agus Sabdono ◽

Ocky Karna Radjasa

Keyword(s):

Coral Reef ◽

National Park ◽

Sampling Method ◽

Initial Step ◽

Asia Pacific ◽

Conservation Areas ◽

Marine Biotechnology ◽

Purposive Sampling ◽

Coral Reef Ecosystems ◽

The Impact

Eleven billion microplastic particles are entangled in coral reef ecosystems in the Asia - Pacific Region. The presence of microplastics in coral reef ecosystems in Indonesia, especially in the Karimunjawa Marine National Park, was found as many as 22.7 and 12.8 particles / kilogram samples in two locations. The presence of microplastics in coral reef ecosystems allows threats to the health of coral reefs. Therefore, the importance of this study is to complement the data on the distribution of microplastics in the Karimunjawa Marine National Park as an initial step for conservation and mitigation of the impact of plastic/ microplastic pollution. Sampling using purposive sampling method. Sediment collection using SCUBA set and sediment grab at a depth of 3 - 5 meters. ± 1000 g of sediment was taken and stored in double zip lock plastic. The samples were then analyzed by microplastics in the Tropical Marine Biotechnology Laboratory, FPIK UNDIP. The results showed that the greatest abundance of microplastics was in the Karang Tengah area with the number of microplastics 96 particles / kilogram, and the farthest in the Ujung Gelam and Lego was 11 particles / kilogram. Research shows that the abundance of microplastics in areas with human activities such as tourism, ports, and boat routes has a high abundance compared to conservation areas or areas with little human activity. It is hoped that the available data from this type of research will be able to produce decisions on conservation measures in Karimunjawa Marine National Park. Sebelas miliar partikel mikroplastik terjerat pada ekosistem terumbu karang di Kawasan Asia – Pasifik. Keberadaan mikroplastik pada ekosistem terumbu karang di Indonesia, khususnya di Taman Nasional Laut Karimunjawa, ditemukan sebanyak 22,7 dan 12,8 partikel/kilogram sampel di dua lokasi. Keberadaan mikroplastik di ekosistem terumbu karang memungkinkan adanya ancaman terhadap kesehatan terumbu karang. Oleh karena itu pentingnya penelitian ini untuk melengkapi data sebaran mikroplastik di Kawasan Taman Nasional Laut Karimunjawa sebagai langkah awal konservasi dan mitigasi dari dampak polusi plastik/mikroplastik. Pengambilan sampel menggunakan metode purposive sampling. Pengambilan sedimen menggunakan SCUBA set dan sediment grab pada kedalaman 3 – 5 meter. Sedimen diambil ± 1000 gr dan disimpan dalam plastik double zip lock. Sampel kemudian dianalisis mikroplastik di laboratorium Tropical Marine Biotechnology, FPIK UNDIP. Hasil menunjukkan bahwa kelimpahan mikroplastik terbesar pada daerah karang tengah dengan jumlah mikroplastik 96 partikel/kilogram, dan terkecil pada perairan ujung gelam dan lego yaitu sebanyak 11 partikel/kilogram. Penelitian menunjukkan bahwa kelimpahan mikroplastik didaerah dengan aktivitas manusia seperti pariwisata, pelabuhan, dan jalur kapal memiliki kelimpahan tinggi dibanding dengan daerah konservasi atau daerah dengan aktivitas manusia yang kecil. diharapkan dengan data yang tersedia dari penelitian sejenis ini, mampu menghasilkan keputusan terhadap langkah konservasi di Taman Nasional Laut Karimunjawa.

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Vertical Distribution Of Hard Corals In Southern Siladen Island

JURNAL ILMIAH PLATAX ◽

10.35800/jip.5.1.2017.14972 ◽

2017 ◽

Vol 5 (1) ◽

pp. 49

Author(s):

John L. Tombokan ◽

Unstain N. W. J. Rembet ◽

Silvester B. Pratasik

Keyword(s):

Coral Reef ◽

Reef Flat ◽

Coral Species ◽

Life Forms ◽

Hard Coral ◽

Long Line ◽

Abiotic Component ◽

Line Transects ◽

Line Intercept ◽

Reef Condition

This study was aimed at provide information on hard coral distribution in southern Siladen Island. The work was done using SCUBA gear Line Intercept Transect (LIT). Thirty m long-line transects were placed at the reef flat, 5 m depth, 10 m depth, 15 m depth, and 20 m depth. A total of 44 hard coral genera was recorded, and the highest number of genre was found at 5 m depth. Coral species diversity was also high enough at the reef flat (1.032) and 5 m depth (1.28). Coral reef condition at 10 m depth was good enough as well and categorized as productive due to much higher percent of the biotic component than the abiotic component. The dominant life forms consisted of tabulate Acropora and branching corals at the reef flat, encrusting corals, branching corals, and foliose corals at 5 m, encrusting corals at 10 and 20 m depth, and massive corals, encrusting corals, and branching corals at 15 m depth, respectively. Keywords: coral reef, distribution, LIT, vertical zonationl. Abstrak Penelitian ini bertujuan untuk menyediakan informasi tentang distribusi karang batu di sebelah selatan pulau Siladen. Penelitian ini dilakukan menggunakan alat selam SCUBA dan metode transek intersep garis. Tali transek sepanjang 30 m diletakkan di rataan terumbu, kedalaman 5, 10, 15, dan 20 m. Total 44 genera karang batu ditemukan pada penelitian ini, dan jumlah genera terbanyak ditemukan pada kedalaman 5 m. Keanekaragaman spesies karang juga cukup tinggi di daerah rataan terumbu (1,032) and 5m (1,28). Kondisi terumbu karang pada kedalaman 10 m juga cukup baik dan dikategorikan produktif karena tingginya komponen biotik dibandingkan dengan komponen abiotik. Bentuk pertumbuhan yang dominan masing-masing terdiri dari Acropora meja dan karang bercabang di rataan terumbu karang, karang encrusting, karang bercabang, dan foliose pada kedalaman 5 m, karang encrusting pada kedalaman 10 dan 20m, serta karang masif, karang encrusting dan karang bercabang pada kedalaman 15m. Kata kunci: Terumbu karang, distribusi, Transek Intersep Garis, Zonasi vertikal.

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A biodiversity assessment of hard corals in dive spots within Dampier Straits Marine Protected Area in Raja Ampat, West Papua, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d200436 ◽

2019 ◽

Vol 20 (4) ◽

pp. 1198-1207

Author(s):

YUANIKE YUANIKE ◽

FREDINAN YULIANDA ◽

DIETRIECH G BENGEN ◽

ROKHMIN DAHURI ◽

JEMMY SOUHOKA

Keyword(s):

Coral Reef ◽

Protected Area ◽

Coral Species ◽

Marine Protected Area ◽

Good Condition ◽

Marine Biota ◽

Biodiversity Assessment ◽

Hard Coral ◽

West Papua ◽

Coral Reef Ecosystems

Abstract. Yuanike, Yulianda F, Bengen DG, Dahuri R, Souhoka J. 2019. A biodiversity assessment of hard corals in dive spots within Dampier Straits Marine Protected Area in Raja Ampat, West Papua, Indonesia. Biodiversitas 20: 1198-1207. Hard coral dominates coral reef ecosystems and has important functions and interactions in communities of marine biota. The structure and diversity of hard coral communities is very important to quantify, especially for the management of coral reef ecosystems. The purpose of this research is to identify the diversity of hard coral types, and quantify the condition of hard coral and their distributions in 10 marine stations in Dampier Straits Marine Protected Areas, Raja Ampat. The research method used was line intercept transects measured at two depths, 3 m and 6 m. The results showed there were 141 hard coral species included in 16 families. The percentage live cover of hard coral was in good conditions with an overall average coverage value of 64,24%. The biodiversity index (H) ranged from 0,84-1,23, the evenness index of species ranged from 0,73-0,94, and the species dominance index ranged from 0,05-0,25, indicating a high biodiversity and a lack of dominance by a single species. Although cover was slightly higher at 3m depth, diversity was slightly higher at 6m depth. In general, the 10 research stations in Dampier Straits has hard coral in good condition and the diversity of hard coral species is very productive and has stable growth compared with other sites in Indonesia.

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The change of coral cover in Ujong Pancu waters, Peukan Bada Sub-District, Aceh Besar

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/869/1/012051 ◽

2021 ◽

Vol 869 (1) ◽

pp. 012051

Author(s):

M Ulfah ◽

M Muliari ◽

F Azzahara ◽

N M Razi ◽

M R Fazillah ◽

...

Keyword(s):

Coral Reef ◽

Coral Reefs ◽

Coral Cover ◽

Hard Coral ◽

Ecological Functions ◽

Coral Genus ◽

The Earth ◽

Coral Reef Ecosystems ◽

Hard Coral Cover

Abstract Coral reef ecosystems are one of the most productive ecosystems on the earth, with large ecological functions. The disruption of coral reef ecosystems has a significant impact on the surrounding biota. This study aims to determine the condition of coral reefs for the last three years in Ujong Pancu waters, Peukan Bada sub-district, Aceh Besar district. This study uses data in 2017, 2018, and 2019 with three observation locations: Lhok Keeutapang, Lhok Mata Ie, and Tuan Island. The method used is Point Intercept Transect (PIT) with a transect length of 20 m with four repetitions. The results showed that the percentage of hard coral cover in the Ujong Pancu waters decreased from the good category (50.31%) in 2017 to moderate (47.81%) in 2019. The percentage with the highest coral cover was at the Lhok Keutapang location at 72, 81% in 2018, while the lowest coral cover at the Tuan Island location was 15.94% in 2017. The composition of the coral genus found also decreased from 12 coral genera (2017) to 9 coral genera (2019).

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DOMINASI GENERA KARANG KERAS (HARD CORAL) DI PERAIRAN DESA TANJUNG TIRAM, KAB. KONAWE SELATAN

Jurnal Sapa Laut (Jurnal Ilmu Kelautan) ◽

10.33772/jsl.v6i3.20992 ◽

2021 ◽

Vol 6 (3) ◽

pp. 235

Author(s):

Mundzir Massar ◽

Baru Sadarun ◽

. Subhan

Keyword(s):

Reef Flat ◽

Reef Slope ◽

Hard Coral

Ekosistem terumbu karang di Desa Tanjung Tiram memiliki sumberdaya yang beranekaragam dan berlimpah. Namun dalam beberapa dekade terakhir, keberadaannya terancam oleh kegiatan penangkapan ikan yang tidak ramah lingkungan. Penelitian ini bertujuan untuk mengetahui dominasi genera karang keras dan persentase tutupan karang hidup serta hubungan faktor lingkungan dengan sebaran kondisi terumbu karang di perairan Desa Tanjung Tiram. Penelitian ini dilaksanakan pada bulan September 2020. Hasil penelitian ini ditemukan 3 genera dominasi yaitu Porites, Fungia dan Favites dimana Porites merupakan genus karang yang paling dominan ditemukan di area reef slope dan reef flat. Secara keseluruhan persentase tutupan karang hidup Perairan Tanjung Tiram berada di bawah 60%. Semakin dalam perairan presentase tutupan karang hidup makin rendah dan patahan mendominasi.Kata kunci: Dominasi, Karang Keras, Tanjung Tiram.

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