scholarly journals MANFAAT LANGSUNG TERUMBU KARANG DI DESA TUMBAK KABUPATEN MINAHASA TENGGARA

2012 ◽  
Vol 8 (2) ◽  
pp. 58
Author(s):  
Ingrid Sembiring ◽  
Adnan Sj Wantasen ◽  
Edwin LA Ngangi
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Building Materials ◽  
Low Cost ◽  
Construction Materials ◽  
Fishing Ground ◽  
Residential Areas ◽  
Direct Benefit ◽  
Direct Benefits ◽  
Coral Reef Ecosystems

Penangkapan ikan yang destruktif (menggunakan bom dan racun) dan pengambilan karang un­tuk dijadikan fondasi rumah menjadi isu dalam pengelolaan pesisir di Desa Tumbak. Tujuan penelitian ini adalah (1) Mengetahui nilai manfaat langsung terumbu karang sebagai tempat penangkapan ikan oleh masyarakat di Desa Tumbak; (2) Mengetahui nilai manfaat langsung terumbu karang sebagai bahan ba­ngunan oleh masyarakat di Desa Tumbak; (3) Mengetahui total nilai pemanfaatan terumbu karang seba­gai tempat penangkapan ikan dan sebagai bahan bangunan oleh masyarakat di Desa Tumbak. Nilai man­faat langsung terumbu karang untuk fondasi rumah diperoleh Rp6.177.600 per tahun dan nilai manfaat langsung terumbu karang untuk penangkapan ikan karang Rp4.860.000.000. Total nilai manfaat langsung dari kedua pemanfaatan ini yaitu: Rp4.866.177.600. Total nilai ini belum termasuk pemanfaatan dalam bentuk lain terhadap ekosistem terumbu karang. Pemanfaatan terumbu karang sebagai bahan bangunan terutama disebabkan oleh faktor biaya yang murah dan jarak yang dekat dengan pemukiman. Praktik pe­manfaatan yang tidak berkelanjutan ini menyebabkan degradasi kondisi terumbu karang sehingga tutupan karang hidup berada dalam kategori rusak (sedang). Jika terjadi terus-menerus, hal ini dapat menghilang­kan fungsi ekologis sebagai peredam ombak dan fungsi ekonomis sebagai sumber pangan. Kata kunci: Tumbak; nilai manfaat langsung; terumbu karang; ekosistem   The issues of destructive fishing practices (using of bombs and poisons) and the use of corals as construction building materials have become issues in coastal management in Tumbak Village. The aims of this study are (1) to find out the value of the direct benefits of coral reefs as fishing ground to the com­munities in Tumbak village, (2) to find out the value of the direct benefits of coral reefs as building mate­rials to the communities in Tumbak village; (3) to find out the total value of the use of coral reefs as a fishing ground and as a construction materials for to the communities in Tumbak village. The value of direct benefit of the coral reef for building foundation was Rp 6,177,600 per year and the value of direct benefits for fishing was Rp 4,860,000,000. Total value of direct benefits from both of these uses was Rp 4,866,177,600. Total value did not include the use of other forms of coral reef ecosystems. In conclusi­ons, the use of coral reefs as a building materials were mainly due to the low cost and the proximity to residential areas. Such category unsustainable practice has led to the degradation of coral reefs down to damaged category (medium category). If this happened continuously, the ecological function as wave protectors and economic functions as a source of food could be eliminated. Keywords: Tumbak; direct benefit value; coral reefs; ecosystem.

scholarly journals Representative benthic habitat mapping on Lovina coral reefs in Northern Bali, Indonesia

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Anggita Kartikasari ◽  
TODHI PRISTIANTO ◽  
RIZKI HANINTYO ◽  
EGHBERT ELVAN AMPOU ◽  
TEJA ARIEF WIBAWA ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Habitat Mapping ◽  
Benthic Habitat ◽  
Coral Rubble ◽  
Spatial Coverage ◽  
Coral Reef Ecosystems ◽  
Optical Imagery ◽  
Sentinel 2

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.

scholarly journals Divergence of seafloor elevation and sea level rise in coral reef ecosystems

2017 ◽  
Vol 14 (6) ◽  
pp. 1739-1772 ◽  
Author(s):  
Kimberly K. Yates ◽  
David G. Zawada ◽  
Nathan A. Smiley ◽  
Ginger Tiling-Range
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Sea Level Rise ◽  
Sea Level ◽  
Anthropogenic Impacts ◽  
Regional Scale ◽  
Coastal Hazards ◽  
Carbonate Production ◽  
Coral Reef Ecosystems ◽  
Study Sites

Abstract. Coral reefs serve as natural barriers that protect adjacent shorelines from coastal hazards such as storms, waves, and erosion. Projections indicate global degradation of coral reefs due to anthropogenic impacts and climate change will cause a transition to net erosion by mid-century. Here, we provide a comprehensive assessment of the combined effect of all of the processes affecting seafloor accretion and erosion by measuring changes in seafloor elevation and volume for five coral reef ecosystems in the Atlantic, Pacific, and Caribbean over the last several decades. Regional-scale mean elevation and volume losses were observed at all five study sites and in 77 % of the 60 individual habitats that we examined across all study sites. Mean seafloor elevation losses for whole coral reef ecosystems in our study ranged from −0.09 to −0.8 m, corresponding to net volume losses ranging from 3.4  ×  106 to 80.5  ×  106 m3 for all study sites. Erosion of both coral-dominated substrate and non-coral substrate suggests that the current rate of carbonate production is no longer sufficient to support net accretion of coral reefs or adjacent habitats. We show that regional-scale loss of seafloor elevation and volume has accelerated the rate of relative sea level rise in these regions. Current water depths have increased to levels not predicted until near the year 2100, placing these ecosystems and nearby communities at elevated and accelerating risk to coastal hazards. Our results set a new baseline for projecting future impacts to coastal communities resulting from degradation of coral reef systems and associated losses of natural and socioeconomic resources.

The scientific issues surrounding remote detection of submerged coral ecosystems

1998 ◽  
Vol 22 (2) ◽  
pp. 190-221 ◽  
Author(s):  
Heather Holden ◽  
Ellsworth LeDrew
Keyword(s):  
Remote Sensing ◽  
Coral Reef ◽  
Coral Reefs ◽  
Large Scale ◽  
Aerial Photographs ◽  
Coastal Zones ◽  
Global Status ◽  
Coral Reef Ecosystems ◽  
Remote Estimation

According to the 1993 colloquium on the ‘Global status of coral reefs', our understanding of the global role of coral reefs is inadequate. To increase our understanding, an accurate large-scale mapping and monitoring programme is necessary. Historically, coastal zones have been mapped using traditional surveying tools such as topographic maps, nautical charts, existing aerial photographs and direct observations. Although less expensive than digital imagery, exclusive use of these traditional tools may not be practical for monitoring large or remote coral reef ecosystems accurately. Researchers are attempting to develop an adequate coral reef mapping system based on digital remote sensing, but are impeded by issues such as effects of the intervening water column and spectral distinction of bottom types. The two variables discussed, which will contribute to our understanding of the global role of coral reefs, are: 1) remote sensing of submerged coral reefs in general; and 2) remote sensing of coral bleaching in particular. A summary of radiative transfer theory is presented and case studies of attempts at mapping remotely the geographic extent and health of submerged ecosystems, as well as a discussion of the remote estimation of water depth and quality. Problems in the translation and delivery of information to the end user are presented, and possible solutions suggested.

scholarly journals Potential contribution of fish restocking to the recovery of deteriorated coral reefs: an alternative restoration method?

2016 ◽  
Author(s):  
Uri Obolski ◽  
Lilach Hadany ◽  
Avigdor Abelson
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Low Cost ◽  
Management Approach ◽  
Rapid Decline ◽  
Potential Contribution ◽  
Reef Management ◽  
Reef Restoration ◽  
Reef Recovery ◽  
Restoration Method

Counteracting the worldwide trend of coral reef degeneration is a major challenge for the scientific community. A crucial management approach to minimizing stress effects on healthy reefs and helping the recovery of disturbed reefs is reef protection. However, the current rapid decline of the world's reefs suggests that protection might be insufficient as a viable stand-alone management approach for some reefs. We thus suggest that the ecological restoration of coral reefs (CRR) should be considered as a valid component of coral reef management, in addition to protection, if the applied method is economically applicable and scalable. This theoretical study examines the potential applicability and outcomes of restocking grazers as a restoration tool for coral reef recovery – a tool that has not been applied so far in reef restoration projects. We studied the effect of restocking grazing fish as a restoration method using a mathematical model of degrading reefs, and analyzed the financial outcomes of the restocking intervention. The results suggest that applying this restoration method, in addition to protection, can facilitate reef recovery. Moreover, our analysis suggests that the restocking approach almost always becomes profitable within several years. Considering the relatively low cost of this restoration approach and the feasibility of mass production of herbivorous fish, we suggest that this approach should be considered and examined as an additional viable restoration tool for coral reefs.

scholarly journals Potensi Ekosistem Terumbu Karang Untuk Pengembangan Ekowisata di Perairan Pulau Sintok Taman Nasional Karimunjawa

2020 ◽  
Vol 9 (4) ◽  
pp. 374-385
Author(s):  
Maulana Cahya Widhiatmoko ◽  
Hadi Endrawati ◽  
Nur Taufiq-SPJ
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Development Strategy ◽  
Coral Cover ◽  
Good Condition ◽  
Tourism Industry ◽  
Line Transect ◽  
Marine Biota ◽  
Suitability Index ◽  
Coral Reef Ecosystems

ABSTRAK: Ekosistem terumbu karang merupakan habitat berbagai biota laut bernilai ekonomis tinggi. Ekowisata merupakan perjalanan wisata ke wilayah alami maupun buatan dengan tujuan konservasi untuk menjamin kelestarian alam dan sosial- budaya. Tujuan penelitian ini untuk mengetahui potensi biofisik terumbu karang untuk pengembangan ekowisata serta mengetahui analisis strategi pengembangan ekowisata terumbu karang di Pulau Sintok Karimunjawa. Pengamatan biofisik ekosistem terumbu karang dilakukan menggunakan metode LIT atau Line Transect. Data yang didapat dianalisis menggunakan indeks kesesuaian ekowisata selam dan analisis SWOT. Hasil menunjukkan bahwa tutupan karang hidup di Pulau Sintok pada keempat titik pengambilan berkisar antara 30-82%. Berdasarkan analisis kesesuaian ekowisata, kawasan perairan Pulau Sintok memiliki nilai IKW (Indeks Kesesuaian Wisata) >50 – 83% dimana nilai 50% - < 80% termasuk kedalam kelas (S2) atau suitable dan nilai IKW 83% termasuk ke dalam kategori (S1) atau sangat sesuai untuk dijadikan sebagai ekowisata terumbu karang kategori selam. Analisis strategi pengelolaan kawasan pengembangan ekowisata di perairan Pulau Sintok adalah dengan :  pengelolaan kawasan terumbu karang sebagai ekowisata secara optimal, perlunya upaya pencegahan kerusakan ekosistem terumbu karang untuk dijadikan kawasan ekowisata, pengembangan sistem informasi serta meningkatkan sarana prasarana pengelolaan ekowisata, dan Penegakkan hukum dan peraturan perundang-undangan demi penerapan pengelolaan terumbu karang secara lestari. ABSTRACT: The coral reef ecosystems are habitats for various marine biota, which have a high economic value. Coral reef ecosystems provide merits to support the marine tourism industry for foreign exchange earnings. They also provide significant employment and business opportunities. Coral reef ecosystems which have a good condition can be developed into coral reef ecotourism. Ecotourism is a tour to natural and artificial areas with the purpose of conservation to ensure the natural and socio-cultural sustainability. The purpose of this research is to find out the biophysical potential of the coral reefs for the development of ecotourism, and to perceive the analysis of the development strategy of coral reef ecotourism in Sintok Island, Karimunjawa. The biophysical observation of coral reef ecosystems is conducted with LIT or Line Transect method. The data obtained is analyzed using ecotourism suitability index and SWOT analysis. The result of this research shows that living coral cover on Sintok Island at the four taking points ranged from 30-82%. According to the analysis of ecotourism suitability, Sintok Island waters area has IKW value (Tourism Suitability Index) >50-83%. The value of 50%-<80% belongs to the class (S2) or suitable, and the IKW value of 83% belongs to the category (S1) or very suitable to be used as coral reef ecotourism category. The analysis of the management strategy of ecotourism development area in Sintok Island waters are as follows: (1) The optimal management of coral reef area as ecotourism, (2) The prevention of coral reef ecosystems from damage, (3) The development of information system, as well as the enhancement of ecotourism management infrastructure, and (4) The enforcement of laws and regulations for the sake of coral reefs’ sustainable management.

scholarly journals Diversitas Echinodermata di Pantai Meras Kecamatan Bunaken Sulawesi Utara (Diversity of Echinoderms on the Meras Beach, Bunaken District, North Sulawesi)

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Billy R Rompis ◽  
Marnix LD Langoy ◽  
Deidy Y Katili ◽  
Adelfia Papu
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Food Webs ◽  
Diversity Index ◽  
North Sulawesi ◽  
Wiener Diversity Index ◽  
Sea Grass ◽  
Coral Reef Ecosystems ◽  
Line Transects ◽  
Total Species

Abstrak Echinodermata berperan penting pada ekosistem terumbu karang sebagai bagian dari jejaring makanan. Mereka dapat bersifat herbivora, karnivora, dan/atau omnivora. Kerusakan terumbu karang di Pantai Meras akhir-akhir ini dapat mengancam Echinodermata. Informasi tentang diversitas Echinodermata di Pantai Meras masih sedikit. Oleh karena itu, penelitian tentang diversitas Echinodermata perlu dilakukan di Pantai Meras, Kecamatan Bunaken, Sulawesi Utara. Pengambilan sampel pada tiap lokasi dilakukan pada saat surut terendah dengan menarik 3 garis transek (masing-masing 100 meter) secara vertikal dari garis pantai ke arah laut. Petak kuadrat (1 x 1 meter) diletakkan dengan jarak antar kuadrat yaitu 10 meter. Hasil penelitian menunjukkan bahwa Echinodermata hidup pada habitat padang lamun, pasir dan terumbu karang baik yang hidup maupun mati. Total species yang ditemukan yaitu 8 spesies yang termasuk anggota dari 3 kelas. Kelas Asteroidea (bintang laut) sebanyak 3 spesies, Echinoidea sebanyak 4 spesies dan Kelas Holothuroidea sebanyak 1 spesies. Diversitas Echinodermata di Pantai Meras adalah antara rendah hingga sedang dengan nilai indeks diversitas Shannon-Wiener (H’) berkisar antara 0,48 – 1,31. Kata kunci: Diversitas Echinodermata, Pantai Meras, Sulawesi Utara Abstract Echinoderms have important role in coral reef ecosystems as part of the food webs. They may be herbivores, carnivores, and/or omnivores. Coral reefs destruction in Meras Beach lately can threaten Echinoderms. There was little information about Echinoderms diversity of Meras Beach. Therefore, research on Echinoderms diversity needs to be done on the Meras Beach, Bunaken District, North Sulawesi. Sampling was carried out at each location at the lowest tide. There were 3 line transects (each 100 meters) located vertically from the shoreline towards the sea. The square plots (1 x 1 meter) placed distance between plots was 10 meters. The results showed that Echinoderms occupied different habitat i.e. sea grass, sand, live and/or coral reefs. Total species found 8 species belong to members of the 3 classes. Asteroidea Class (starfish),  Echinoidea Class and Holothuroidea were respectively 3 species, 4 species and 1 species. Echinoderms diversity on the Meras Beach were low to moderate with Shannon-Wiener diversity index (H ') was 0.48 to 1.31. Keywords: Echinodermata diversity, Meras Beach, North Sulawesi Rompis dkk., Distribusi Echinodermata …. 27PENDAHULUAN

scholarly journals Digging for DNA at depth: rapid universal metabarcoding surveys (RUMS) as a tool to detect coral reef biodiversity across a depth gradient

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6379 ◽  
Author(s):  
Joseph D. DiBattista ◽  
James D. Reimer ◽  
Michael Stat ◽  
Giovanni D. Masucci ◽  
Piera Biondi ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Indicator Species ◽  
18S Rrna ◽  
Spatial Scales ◽  
Environmental Dna ◽  
Marine Biodiversity ◽  
Depth Gradient ◽  
Coral Reef Ecosystems ◽  
Eukaryotic Organisms

Background Effective biodiversity monitoring is fundamental in tracking changes in ecosystems as it relates to commercial, recreational, and conservation interests. Current approaches to survey coral reef ecosystems center on the use of indicator species and repeat surveying at specific sites. However, such approaches are often limited by the narrow snapshot of total marine biodiversity that they describe and are thus hindered in their ability to contribute to holistic ecosystem-based monitoring. In tandem, environmental DNA (eDNA) and next-generation sequencing metabarcoding methods provide a new opportunity to rapidly assess the presence of a broad spectrum of eukaryotic organisms within our oceans, ranging from microbes to macrofauna. Methods We here investigate the potential for rapid universal metabarcoding surveys (RUMS) of eDNA in sediment samples to provide snapshots of eukaryotic subtropical biodiversity along a depth gradient at two coral reefs in Okinawa, Japan based on 18S rRNA. Results Using 18S rRNA metabarcoding, we found that there were significant separations in eukaryotic community assemblages (at the family level) detected in sediments when compared across different depths ranging from 10 to 40 m (p = 0.001). Significant depth zonation was observed across operational taxonomic units assigned to the class Demospongiae (sponges), the most diverse class (contributing 81% of species) within the phylum Porifera; the oldest metazoan phylum on the planet. However, zonation was not observed across the class Anthozoa (i.e., anemones, stony corals, soft corals, and octocorals), suggesting that the former may serve as a better source of indicator species based on sampling over fine spatial scales and using this universal assay. Furthermore, despite their abundance on the examined coral reefs, we did not detect any octocoral DNA, which may be due to low cellular shedding rates, assay sensitivities, or primer biases. Discussion Overall, our pilot study demonstrates the importance of exploring depth effects in eDNA and suggest that RUMS may be applied to provide a baseline of information on eukaryotic marine taxa at coastal sites of economic and conservation importance.

scholarly journals Kondisi Terkini Presentase Tutupan Terumbu Pada Masa Pandemi Covid-19 di Gili Air, Taman Wisata Perairan Gili Matra, Nusa Tenggara Barat

2021 ◽  
Vol 7 (2) ◽  
pp. 238-247
Author(s):  
Nurliah Buhari ◽  
Mahardika Rizqi Himawan ◽  
Edwin Jefri ◽  
Paryono Paryono ◽  
Ibadur Rahman ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Cover ◽  
Secondary Data ◽  
Live Coral ◽  
Conservation Areas ◽  
Core Zone ◽  
Biological Targets ◽  
The Core ◽  
Coral Reef Ecosystems

Gili Matra Aquatic Tourism Park has two conservation targets, namely biological targets and social, cultural and economic targets. Coral reef ecosystems, apart from being a conservation target, are also an attraction for tourists to visit. This research was conducted to determine the condition of the coral reef ecosystem to be used as the basis for the management of conservation areas. The research was conducted by collecting coral reef data either through surveys or secondary data from the results of previous studies. Coral reef survey using the standard Line Intercept Transect method. The survey results show that the condition of coral reefs in the utilization zone is better than the core zone. Live coral cover in the utilization zone reached 71% so it was categorized as good, while in the core zone it only reached 8% so it was categorized as bad. Coral reefs in the core zone are unable to recover even though the number of tourists has decreased during the Covid-19 pandemic. Therefore, the location of the core zone on Gili Air needs to be evaluated further so that the effectiveness of Gili Matra TWP management can be improved.  Key words: coral reefs; Gili Matra; Conservation

scholarly journals Pemetaan Sebaran Terumbu Karang Studi Kasus Selat Madura, Jawa Timur

2019 ◽  
Vol 22 (2) ◽  
pp. 127
Author(s):  
Zainul Hidayah ◽  
Nike Ika Nuzula
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Satellite Imagery ◽  
Scuba Diving ◽  
Water Area ◽  
Shallow Waters ◽  
Coral Reef Ecosystem ◽  
Shallow Water Area ◽  
Landsat 7 ◽  
Coral Reef Ecosystems

Mapping of the potential of coral reefs on the coast of the Madura Strait is evaluated. The coral mapping purposes are to evaluated a total area of the coral reefs in line with the current condition. The index of the area of coral reefs on the coast of the Madura Strait was also compiled to produce a database of the parameters that affect to the coral reefs growths. The imaga data processed is using Landsat. Maping data processing methos is using Lyzinge Algorithm since the area has shallow water area characteristics. The area of coral reef substrate identified according to the processed image is 10.478.032 Ha. The Landsat 7 satellite imagery has an ability to detect the characteristics of shallow waters using blue channels with wavelengths of 0.45-0.52 µm and green channels with wavelengths of 0.52-0.60 µm. However, to determine the condition and how severe the damage to coral reefs, detection with satellite imagery is not enough so that direct observation is needed through scuba diving activities. Scuba diving is carried out to determine the condition of coral reefs. Roughly, coral reef ecosystems in the objects are categorized as moderate to damaged. The damage to this coral reef ecosystem identified at the depths of 5 and 10 meters. Pemetaan potensi terumbu karang dilakukan di area pesisir Selat Madura. Pemetaan ini dilukan dengan memanfaatkan data citra satelit dari Landsat 7 dan pengolahan data menggunakan metode Algoritma Lyzinge. Studi ini bertujuan untuk mengetahui cakupan luas dari sebaran terumbu karang serta kondisi terumbu karang. Indeks dari area terumbu karang dipetakan dan disusun untuk selanjutkan digunakan sebagai basis data yang berisi tentang informasi yang mengadung parameter – parameter yang berpengaruh terhadap pertumbuhan terumbu karang. Dalam penelitian ini, terumbu karang ditemukan di perairan dangkal yang jernih. Citra satelit Landsat 7 memiliki sensor yang dapat mendeteksi karakteristik perairan dangkal dengan memanfaatkan saluran/ kanal biru dengan panjang gelombang 0,45-0,52 µm dan saluran/ kanal hijau dengan panjang gelombang 0,52-0,60 µm. Namun, untuk mengetahui kondisi dan tingkat kerusakan terumbu karang, pendeteksian dengan citra satelit tidaklah cukup sehingga diperlukan pengamatan secara langsung melalui aktivitas penyelaman scuba. Hasil yang diperoleh dari penelitian ini adalah luas substrat terumbu karang adalah 10,478.032 Ha. Hasil dari scuba diving menunjukkan bahwa secra umum ekosistem terumbu karang di perairan Selat Madura berada dalam kondisi sedang hingga rusak. Kerusakan ekosistem terumbu karang ini terjadi pada kedalaman 5 dan 10 meter.

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