SEBARAN DAN KEPADATAN MEGABENTOS DI PERAIRAN PULAU BUTON, SULAWESI TENGGARA

Perairan Pulau Buton dan sekitarnya dengan wilayah terumbu karang yang cukup luas, kaya keanekaragaman hayati laut dan nilai estetika yang tinggi. Terumbu karang bermanfaat banyak bagi manusia dalam berbagai aspek ekonomi, sosial, dan budaya. Penelitian megabentos pada ekosistem terumbu karang ini telah dilakukan pada 2016 (April), 2017 (Juni) dan 2018 (Mei). Pengamatan dilakukan pada 15 stasiun yang tersebar pada pulau-pulau besar dan kecil dari timur hingga barat. Tujuan penelitian ini untuk mengetahui sebaran dan kepadatan megabentos serta kemiripan spesies antar stasiun pada perairan tersebut. Pengambilan data dilakukan dengan menggunakan metode Reef Check Benthos (RCB). Hasil pengamatan menunjukkan ada delapan spesies megabentos, diantaranya Drupella cornus menyebar secara luas (100%), dan memiliki nilai total kelimpahan individu tertinggi, berkisar antara 35,7 – 57,9%, (472 – 704 individu). Sedangkan Acanthaster planci memiliki sebaran yang terbatas dengan kelimpahan individu yang rendah (0,3 – 1,0%). Kepadatan individu megabentos pada pengamatan April berkisar antara 0,16 – 2,31 individu/140m2, pada Juni berkisar antara 0,11 – 1,47 individu/140m2 dan 0,11 – 1,24 individu/140m2 pada Mei. Dari tiga tahun pengamatan (2016 – 2018) kelimpahan rata-rata individu megabentos tidak ditemukan adanya perbedaan yang signifikan. Hasil analisa klaster menunjukkan bahwa kehadiran setiap spesies megabentos antar stasiun pengamatan dipengaruhi oleh kemiripan tipe substrat dan habitat.The waters of Buton Island and its surrounding, has a large coral reef area with high species biodiversity and has an aesthetics value and beneficial for human being in many aspects such as economics, social and culture. Researches on megabenthos in coral reef ecosystems have been conducted in 2016 (April), 2017 (June) and 2018 (May) at 15 stations around large and small islands scattered from east to west. The aims of this study were to know the distribution and abundance of megabenthos and similarity of species between stations in these waters. Data collection is conducted using the Reef Check Benthos (RCB) method. The results shows that eight megabenthos was found, where Drupella cornus has a wide distribution (100%), and has the highest total value of individual abundance, ranging from 35.7 - 57.9%, (472 - 704 individuals). Whereas Acanthaster planci has a limited distribution with a low abundance of individuals (0.3 - 1.0%). The abundance of megabenthos in April’s observations ranged from 0.16 - 2.31 individuals/140m2, in June it ranged from 0.11 - 1.47 individuals/140m2 and 0.11 - 1.24 individuals/140m2 in May. In three years of observation (2016 - 2018) the average abundance of megabenthos individuals is not significantly different. The results of cluster analysis showed that the similarity of megabenthos species between observation stations was influenced by similarities in substrate type and habitat.

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KEPADATAN MEGABENTOS PADA EKOSISTEM TERUMBU KARANG DI PERAIRAN DESA PERLANG BANGKA TENGAH, BANGKA BELITUNG

Akuatik Jurnal Sumberdaya Perairan ◽

10.33019/akuatik.v13i2.1621 ◽

2019 ◽

Vol 13 (2) ◽

pp. 173-177

Author(s):

Arham Hafidh Akbar ◽

Sudirman Adibrata ◽

Wahyu Adi

Keyword(s):

Coral Reef ◽

Data Collection ◽

Coral Cover ◽

Live Coral ◽

Coral Reef Ecosystems ◽

Tridacna Maxima ◽

Belt Transect ◽

Tridacna Gigas ◽

Drupella Cornus ◽

Diadema Setosum

This study aims to analyze the density of megabenthos in coral reef ecosystems in the waters of Perlang Village. This research was conducted in November 2019 in the waters of Perlang Village with the megabentos data collection method using the Bentos Belt Transect (BBT) method based on COREMAP CTI LIPI (2017) with 5 data collection stations. The results found 603 individuals consisting of 9 species from 4 megabenthos families in coral reef ecosystems. Species found at the study site are Diadema setosum, Diadema antillarium (Familli Deadematidae), Drupella cornus, Drupella rugosa (Family Murcidae), Trochus sp, Trochus conus, Tectus pyramis (Family Trochidae), Tridacna gigas, and Tridacna maxima (Family Tridacnidae) . The highest attendance percentage of all stations was obtained by Diadema setosum of 47.93% (289 people). Percentage of live coral cover from 5 observation stations ranged from 57.44% - 91.78%. Observation pensions that received the highest percentage of cover values were at pension 2 with 91.78% in the very good category.

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Olfactory responses of coral-reef fishes to coral degradation and crown-of-thorns (Acanthaster planci)

Marine and Freshwater Research ◽

10.1071/mf14424 ◽

2016 ◽

Vol 67 (5) ◽

pp. 605 ◽

Cited By ~ 2

Author(s):

Amy G. Coppock ◽

Naomi M. Gardiner ◽

Geoffrey P. Jones

Keyword(s):

Coral Reef ◽

Reef Fish ◽

Chemical Cues ◽

Fish Assemblages ◽

Reef Fishes ◽

Live Coral ◽

Acanthaster Planci ◽

Olfactory Responses ◽

Olfactory Stimuli ◽

Coral Reef Ecosystems

Coral degradation is a major threat towards the biodiversity of coral-reef ecosystems, either through the physical effects of environmental change, or biological agents such as crown-of-thorns (Acanthaster planci). Coral loss is leading to significant declines in reef-fish assemblages, particularly those dependent on live coral as settlement sites. Most reef fishes use olfactory stimuli at settlement; however, their ability to detect chemical stimuli from degraded corals or A. planci is unknown. Here, olfactory responses of juvenile reef fishes to the presence of stressed corals and A. planci were tested. Juveniles of eight common coral-associated species were subjected to a series of pair-wise choice tests, where the period of time spent in two differing water sources was noted. All species demonstrated a significant attraction towards healthy coral (≥76%), avoiding cues emitted by stressed coral colonies. When given the choice between a control water (untreated reef water) and water containing chemical cues from A. planci, most species elicited no response. Finally, when given the choice between chemical cues derived from feeding A. planci or the control, all species avoided A. planci (≥70%). Our results indicated that juvenile reef fish are capable of distinguishing the state of coral health, but not directly from disturbance agents.

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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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Condition of coral reef in Batee Island waters, Peukan Bada Sub-District, Aceh Besar

DEPIK ◽

10.13170/depik.10.2.19995 ◽

2021 ◽

Vol 10 (2) ◽

pp. 115-119

Author(s):

Maria Ulfah ◽

Saiful Mahlil ◽

Muhammad Nasir ◽

Sayyid Afdhal El Rahimi ◽

Syahrul Purnawan ◽

...

Keyword(s):

Coral Reef ◽

Coral Cover ◽

Marine Biota ◽

Live Coral ◽

Small Islands ◽

Live Coral Cover ◽

Coral Reef Ecosystems ◽

The Indian Ocean ◽

Average Condition ◽

Line Intercept

Batee Island is one of the small islands in the Aceh Besar region and is uninhabited and directly faces the Indian Ocean. Batee Island's waters have the potential for marine biota, especially coral reef ecosystems, and other associated biotas. This study aims to determine the percentage and comparison of live coral cover in Batee Island waters and determine the genus' composition in Batee Island waters. This research was conducted in October-November 2016. Collecting coral reef data using the LIT (Line Intercept Transect) method. The results showed that the live coral cover in Batee Island's waters differed between the East and West Batee Islands. The coral reefs' average condition in Batee Island waters at shallow depths (0-5m) is 41.41%, and deep (6-10m) is 36.52%. Overall, the conditions and live coral cover in the waters of Batee Island are classified as moderate. In the waters of Batee Island, there are 31 coral genera. The highest percentage of corals was the genus Acropora (50.02%).Keywords:Batee IslandConditionCoral reefCoral cover

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KONDISI EKSISTING FAUNA MEGABENTHOS DI PERAIRAN LABUHAN PANDAN LOMBOK TIMUR PASCA GEMPA BUMI LOMBOK 7.0 SKALA RICHTER

JURNAL BIOLOGI TROPIS ◽

10.29303/jbt.v19i2.1303 ◽

2019 ◽

Vol 19 (2) ◽

pp. 172

Author(s):

Noar Muda Satyawan ◽

Novita Tri Atriningrum

Keyword(s):

Coral Reef ◽

External Disturbance ◽

Acanthaster Planci ◽

Coral Reef Ecosystem ◽

Dominance Index ◽

Ecological Changes ◽

Coral Reef Ecosystems ◽

Reef Health ◽

Belt Transect ◽

Reef Ecosystem

Abstrak : Gangguan eksternal pada ekosistem terumbu karang dapat terjadi secara alami ataupun karena aktifitas manusia yang menimbulkan perubahan fisik maupun ekologis. Perubahan ekologis dapat terlihat dari perubahan komposisi biota yang berasosiasi di dalamnya. Salah satu kelompok biota yang berasosiasi dengan terumbu karang adalah megabenthos. Tujuan dari penelitian ini adalah untk mengetahui kondisi eksisting fauna megabenthos pada ekosistem terumbu karang di perairan Labuhan Pandan Lombok Timur. Pengamatan dilakukan pada 5 stasiun yaitu Gili Bidara (BDR_01), Gili Kondo (KND_01), Gili Petagan 1 (PTG_01), Gili Petagan 2 (PTG_02), dan Gili Petagan 3 (PTG_03). Pengambilan data megabenthos dilakukan dengan metode Benthos Belt Transect (BBT). Hasil penelitian menunjukkan bahwa ditemukan 15 jenis megabenthos yang termasuk dalam 5 Phylum (Mollusca, Echinodermata, Chordata, Annelida, dan Platyhelminthes). Jumlah jenis tertinggi ditemukan pada phylum Echinodermata (10 jenis), kemudian diikuti oleh Mollusca (2 jenis), Chordata (1 jenis), Annelida (1 jenis), dan Platyhelminthes (1 jenis). Kepadatan megabenthos tertinggi ditemukan pada stasiun BDR_01 (10.571 ind/Ha), kemudian diikuti oleh stasiun KND_01 (10.214 ind/Ha), PTG_02 (9.857 ind/Ha), PTG_03 (8.429 ind/Ha) dan PTG_01 (1.714 ind/Ha). Keanekaragaman jenis tertingi ditemukan pada stasiun PTG_01 (H’=1,14), kemudian diikuti oleh BDR_01 (H’=0,76), KND_01 (H’=0,69), PTG_03 (H’=0,17) dan PTG_02 (H’=0,09). Hasil perhitungan indeks dominansi menunjukkan bahwa Didemnum molle (phylum Chordata) ditemukan dominan pada seluruh stasiun pengamatan. Ditemukan juga jenis megabenthos pemangsa hewan karang yaitu Acanthaster planci pada stasiun PTG_03 serta Drupella sp. pada stasiun BDR_01, KND_01 dan PTG_02. Beberapa jenis megabenthos yang ditemukan dapat dijadikan bioindikator dalam pemantauan kesehatan ekosistem terumbu karang di Perairan Labuhan Pandan, Lombok Timur.Kata Kunci: Kondisi eksisting, Megabenthos, Gempa Bumi, Labuhan Pandan, Lombok TimurAbstract: External disturbance to the coral reef ecosystem occured by naturally or due to human activities that cause physical and ecological changes. Ecological changes could be seen from changes in the composition of the associated biota. One of the biota groups that associated with coral reefs were megabenthos. The purpose of this study were to determine the condition of the megabenthos fauna on coral reef ecosystems in the Labuhan Pandan waters, Eastern Lombok. Observations were made at 5 stations namely Gili Bidara (BDR_01), Gili Kondo (KND_01), Gili Petagan 1 (PTG_01), Gili Petagan 2 (PTG_02), and Gili Petagan 3 (PTG_03). Data of Megabenthos were collected by Benthos Belt Transect (BBT) method. The results showed that found 15 species of megabenthos included in 5 phylum (Mollusca, Echinoderm, Chordata, Annelida, and Platyhelminthes). The highest number of species were found in Echinoderms phylum (10 species), followed by Mollusca (2 species), Chordata (1 species), Annelida (1 species), and Platyhelminthes (1 species). The highest megabenthos density were found at BDR_01 station (10,571 ind / Ha), then followed by stations KND_01 (10,214 ind / Ha), PTG_02 (9,857 ind / Ha), PTG_03 (8,429 ind / Ha) and PTG_01 (1,714 ind / Ha). The highest species diversity were found at stations PTG_01 (H '= 1.14), then followed by BDR_01 (H' = 0.76), KND_01 (H '= 0.69), PTG_03 (H' = 0.17) and PTG_02 (H '= 0.09). The calculation result of dominance index shows that Didemnum molle (phylum Chordata) were found dominant in all observation stations. Also found species of coral predator Acanthaster planci at PTG_03 station and Drupella sp. at stations BDR_01, KND_01 and PTG_02. Several species of megabenthos can be used as bioindicators to monitoring of coral reef health in Labuhan Pandan Waters, East Lombok.Keywords: Existing conditions, megabenthos, earthquake, Labuhan Pandan, Eastern Lombok

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Kesesuaian Zonasi Pulau-Pulau Kecil : Studi Kasus Kawasan Konservasi Gili Sulat Gili Lawang Lombok Indonesia

Jurnal Sains Teknologi & Lingkungan ◽

10.29303/jstl.v6i2.183 ◽

2020 ◽

Vol 6 (2) ◽

pp. 202

Author(s):

Sitti Hilyana ◽

Sadikin Amir ◽

Saptono Waspodo

Keyword(s):

Coral Reef ◽

Group Discussion ◽

Mangrove Ecosystem ◽

Structured Interview ◽

Marine Biodiversity ◽

Suitability Analysis ◽

Seagrass Ecosystem ◽

Coral Reef Ecosystems ◽

Seagrass Ecosystems ◽

Coral Reef Area

Gili Sulat Gili Lawang are small islands that have high marine biodiversity and have been designated as a Marine Tourism Park (TWP) covering an area of 10,000 hectares. This study aims to analyze the suitability of zoning and analysis of space use in each zone. The data was collected by using a structured interview technique using a questionnaire and Focus Group Discussion (FGD) approach. Zoning suitability analysis used a Geographic Information System (GIS). The assessment showed that the conditions of the mangrove ecosystem, coral reef ecosystem and seagrass ecosystem were in the bad to good categories. Based on the zoning suitability analysis of 193.83 hectares (44.02%) of the coral reef area suitable for the core zone, 143.33 hectares (32.55%) consists of 108 hectares of coral reef ecosystems and 35.43 hectares of seagrass ecosystems suitable for the zone. limited use, and 9,666.47 hectares are suitable for other zones consisting of a coral reef rehabilitation zone covering an area of 93.11 hectares, a protection zone of 93.11 hectares and other waters 8,585.76 hectares.

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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.1.1.2013.1291 ◽

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

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A threat to coral reefs multiplied? Four species of crown-of-thorns starfish

Biology Letters ◽

10.1098/rsbl.2008.0454 ◽

2008 ◽

Vol 4 (6) ◽

pp. 696-699 ◽

Cited By ~ 78

Author(s):

Catherine Vogler ◽

John Benzie ◽

Harilaos Lessios ◽

Paul Barber ◽

Gert Wörheide

Keyword(s):

Coral Reef ◽

Coral Reefs ◽

Conservation Management ◽

Management Strategies ◽

Molecular Data ◽

Acanthaster Planci ◽

The Face ◽

Coral Reef Ecosystems ◽

The Impact ◽

Entire Distribution

In the face of ever-increasing threats to coral reef ecosystems, it is essential to understand the impact of natural predators in order to devise appropriate management strategies. Destructive population explosions of the crown-of-thorns starfish Acanthaster planci have devastated coral reefs throughout the Indo-Pacific for decades. But despite extensive research, the causes of outbreaks are still unclear. An important consideration in this research is that A. planci has been regarded as a single taxonomic entity. Using molecular data from its entire distribution, we find that A. planci is in fact a species complex. This discovery has important consequences for future coral reef research, and might prove critical for successful reef conservation management.

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ANALISIS PERUBAHAN LUASAN TERUMBU KARANG DENGAN MENGGUNAKAN DATA PENGINDERAAN JAUH CITRA LANDSAT 7 ETM+ DAN 8 OLI DI PERAIRAN PULAU MENJANGAN KECIL KARIMUNJAWA (JEPARA)

Management of Aquatic Resources Journal (MAQUARES) ◽

10.14710/marj.v7i1.22536 ◽

2018 ◽

Vol 7 (1) ◽

pp. 157-163

Author(s):

Muhammad Ilham ◽

Supriharyono Supriharyono ◽

Niniek Widyorini

Keyword(s):

Coral Reef ◽

Coral Cover ◽

Confusion Matrix ◽

Satellite Image ◽

Line Transect ◽

Tourist Destinations ◽

Wide Range ◽

Landsat 7 ◽

Coral Reef Ecosystems ◽

Coral Reef Area

Ekosistem terumbu karang menjadi salah satu potensi sumberdaya pesisir yang memiliki banyak manfaat bagi lingkungan sekitar. Pulau Menjangan Kecil merupakan salah satu pulau di Karimunjawa yang memiliki ekosistem terumbu karang. Beraneka ragam ekosistem terumbu karang yang ada, menjadikan pulau ini sebagai salah satu destinasi wisata yang menarik untuk wisatawan. Penelitian dilaksanakan pada Bulan September 2017. Penelitian bertujuan untuk mengetahui kondisi terumbu karang ditinjau dari nilai persentase luasam penutupan terumbu karang, tingkat akurasi penggunaan citra Landsat 7 ETM+ dan 8 OLI tahun 2013, 2015, dan 2017. Sampling dilakukan pada empat titik. Metode yang digunakan Line Transect, Lyzenga Transformation dan Confusion Matrix. Hasil penelitian menunjukkan bahwa persentase tutupan luasan terumbu karang sebesar 54,31%, perubahan luasan terumbu karang berkurang sebesar 14,1 Ha (3,2%), uji akurasi citra satelit yang dihasilkan sebesar 86,95%. Coral reef ecosystems become one of the potential of coastal resources that have many benefits for the surrounding environment. Menjangan Kecil Island is one of the islands in Karimunjawa which has coral reef ecosystem. A wide range of coral reef ecosystems, making this island as one of the tourist destinations to attract tourists. The research was conducted in September 2017. The objectives of this study were to determine the condition of coral reefs from the percentage of coral cover coverage, the accuracy of Landsat 7 ETM + and 8 OLI imagery in 2013, 2015 and 2017. Sampling was conducted on four stations. The method used is Line Transect, Lyzenga Transformation and Confusion Matrix. The results showed that the percentage of coral cover cover was 54,31%, the coral reef area decreased by 14,1 Ha (3,2%), the test of satellite image accuracy was 86,95%.

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