Evaluation of Coremap Phase 2 in the Eastern Indonesia Based on the Changes in Coral Coverage

Giyanto, _

doi:10.14203/mri.v42i1.112

Cited by 9 publications

(12 citation statements)

References 21 publications

(18 reference statements)

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“…The coral cover was found to be 12.76% in transect 1 and 5.87% in transect 2, indicating a decrease in coral cover towards the section of Tidung Besar Island. This observation aligns with existing research that identifies terrestrial human activities, such as fishing, tourism-related boat transportation, indiscriminate waste disposal, and snorkeling, as causes of coral reef degradation [14][15][16] . Human activities, including snorkeling, were observed to cause damage to coral reefs, with visitors trampling on corals in prohibited areas 15,17 .…”

Section: Resultssupporting

confidence: 88%

Condition of coral cover area in the northern region of Tidung Kecil Island, Thousand Islands

Suhaika,

Martanto,

Azriel

et al. 2023

Biological. environ. pollut.

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This study aims to determine the condition of the coral reef ecosystem on Tidung Kecil Island, Seribu Islands. Observational data collection was carried out in June 2022. The method used in this study was descriptive with the Line Interval Transect (LIT) technique with two repetitions, with the distance between the transect points being 10 meters. 2 repetitions aim to represent the coral cover data on the island's northern part. The data taken are the length and type of coral reef growth, which is then processed to be included in the coral cover area formula. Observational data were then analyzed using the coral cover percentage formula to calculate live coral growth and continued calculating the percentage cover for all categories of live coral lifeforms. Based on the observations, the condition of the coral cover area in the study area is classified as bad, with a percentage of coral cover area of 18.63% and a percentage of non-coral substrate of 48.7%. This is due to the high human activity (such as fishing) and tourism (such as snorkeling).

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Section: Resultssupporting

confidence: 88%

Condition of coral cover area in the northern region of Tidung Kecil Island, Thousand Islands

Suhaika,

Martanto,

Azriel

et al. 2023

Biological. environ. pollut.

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“…The reef fish species composition was calculated in individual/meter per square. Coral colonies' percentage of benthic lifeform coverage was grouped into thirteen based on the output of category benthic lifeforms [34] developed and modified by the Indonesian Research Centre (LIPI) [19,37]. Coral health analysis was performed according to coral health quality by [37] on criteria standards for damaged coral reefs.…”

Section: Data Collection Techniquementioning

confidence: 99%

“…This situation can be found in almost all coral reef waters in Indonesia. Of the total identified coral reef coverage (2,517.84 Ha), about 35.15% falls in the damaged category [19], even included in the critical category. This condition is exacerbated by the bad behaviour of fishermen and lobster catchers, who generally leave the rest of their fishing gear damaged.…”

mentioning

confidence: 99%

Analysis of potential lobster artificial reef sites in Gerupuk Bay waters of Central Lombok, West Nusa Tenggara

Mujiyanto,

Rahman,

Syam

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Lobster is one of the fisheries products which has become the most searched in international trade because of its high price. Therefore, the highest number of lobsters is from the natural fishing effort. The increasing market has an impact on decreasing habitat. Uncontrollable degradation impact requires an alternative to save the stability of lobster production in nature. This study aims to analyse the suitability of candidate locations for the placement of Lobster Artificial Reefs. The selection site uses the Stationary Visual Census method, while oceanography parameters use Water Quality Checker. Data collection was done in August and October 2021. The analyse suitability site was based on the bio-ecological parameters from some research stations. The research recommended all stations from 2014 to 2016 and FGD in July 2021. Recommendation site was found around Tiung Stone station. It is expected to be a protected area from predators, and it can be a feeding area to provide natural food during lobsters’ life cycle in nature. These results still need to ensure the effectiveness of the artificial habitat function for lobster breeding. Further analysis is required to see the effectiveness value of the location and lobster artificial reef before being implemented in other locations.

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“…Degradasi terumbu karang terutama diakibatkan oleh sedimentasi, pencemaran perairan, penambangan karang, praktik penangkapan ikan yang merusak, badai, peningkatan populasi predator terumbu karang dan peningkatan suhu air laut akibat pemanasan global (Salim, 2012;Giyanto, 2017). Beberapa Penelitian telah menginformasikan bahwa degradasi terumbu Karang adalah diakibatkan oleh kombinasi faktor alam dan faktor aktivitas manusia (antropogenik), seperti perubahan iklim (Ateweberhan et al, 2013;Bruno et al, 2019), polusi (Riegl dan Purkis 2012;Ateweberhan et al, 2013) , sedimentasi (Risk dan Edinger 2011;Erftemeijer et al, 2012;Jones et al, 2019), penangkapan ikan yang merusak (Darling dan Stephanie, 2017), penambangan karang (Brown & Dunne 1988;Caras & Zohar,2009;Flower et al, 2017), wisata bahari, dan pengembangan kawasan pesisir (Vo et al, 2013).…”

Section: Pendahuluanunclassified

Perubahan Luas Terumbu Karang di Pulau Panjang, Jepara

et al. 2022

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The coral reefs of Panjang Island, Jepara have been under pressure both by natural factors and by human (anthropogenic) activities, which have resulted in the degradation coral reef area. Research on changes in coral reefs is needed, but the constraints are time, cost, and labor. Remote sensing interpretation of satellite image data is an alternative to determine changes in the area of coral reefs. The use of multitemporal image data can be applied to analyze changes that occur, in this study using four Landsat image data with the acquisition of 2001,2005, 2010, and 2019. The purpose of this study was to determine changes in the area of coral reefs in Panjang Island for the period 2001-2019. The research material used is Landsat 7 and Landsat 8 imagery. The research method is a survey method with a multispectral classification of the maximum possibilities for extracting coral reef cover data from multitemporal images that have been corrected geometrically and radiometrically. A field survey (ground check) was conducted to determine the percentage mapping accuracy. Data on coral reef cover were overlaid to obtain the results of changes in the area of coral reefs for the period 2001-2019. The results showed that the coral reefs in Panjang Island had undergone extensive changes, namely: The area of living coral reefs decreased to 64,34%, with a change rate of 0.17 HaYear-1from 2001-2019. In 2001, the distribution of live coral reefs was seen on the northeast, east, south, and west sides of Panjang Island then reduced coral reefs area, finally left on the northeast and south sides of the island in 2019. Terumbu karang di Pulau Panjang ,Jepara telah mengalami tekanan baik oleh peristiwa alam maupun oleh aktivitas manusia (antropogenik), yang menyebabkan terjadinya degradasi luasan areal. Penelitian tentang perubahan luas terumbu karang sangat diperlukan, namun kendaalanya adalah waktu lama, biaya serta tenaga yang banyak. Penginderaan jauh interpretasi data citra satelit adalah salah satu alternatif guna mengetahui perubahan luas terumbu karang.Pemanfaatan data citra multitemporal dapat diterapkan untuk menganalisis perubahan yang terjadi, dalam penelitian ini menggunakan empat data citra landsat dengan akuisisi tahun 2001,2005, 2010 dan 2019. Tujuan penelitian ini adalah untuk mengetahui perubahan luas terumbu karang di perairan Pulau Panjang perode tahun 2001-2019. Materi Penelitian yang dipergunakan adalah citra Landsat 7 dan Landsat 8.Metode penelitian adalah metode survei dengan klasifikasi multispektral dari kemungkinan maksimum untuk ekstraksi data tutupan terumbu karang dari citra multitemporal yang telah dikoreksi secara geometris dan radiometrik.survei lapangan (ground check) dilakukan untuk mengetahui persentase akurasi pemetaan. Data luas tutupan terumbu karang dioverlay guna mendapatkan hasil perubahaan luas terumbu karang periode tahun 2001-2019. Hasil penelitian menunjukan bahwa Terumbu karang di Pulau Panjang telah mengalami perubahan luas yaitu 64,34% dengan laju penurunan sebesar 0,17 HaTh-1dari Tahun 2001-2019. Pada tahun 2001 sebaran terumbu karang hidup terlihat di sisi timur laut, timur, selatan dan dan barat dari Pulau Panjang, kemudian semakin mengecil areanya, hingga tersisa pada sebelah sisi timur laut dan selatan pulau saja pada tahun 2019.

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Evaluation of Coremap Phase 2 in the Eastern Indonesia Based on the Changes in Coral Coverage

Cited by 9 publications

References 21 publications

Condition of coral cover area in the northern region of Tidung Kecil Island, Thousand Islands

Condition of coral cover area in the northern region of Tidung Kecil Island, Thousand Islands

Analysis of potential lobster artificial reef sites in Gerupuk Bay waters of Central Lombok, West Nusa Tenggara

Perubahan Luas Terumbu Karang di Pulau Panjang, Jepara

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