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

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).

scholarly journals KONDISI TERUMBU KARANG PADA KAWASAN WISATA PANTAI MALALAYANG KOTA MANADO PROVINSI SULAWESI UTARA DENGAN MENGGUNAKAN METODE UNDERWATER PHOTO TRANSECT

2021 ◽  
Vol 9 (1) ◽  
pp. 44
Author(s):  
Devidson Daud ◽  
Joshian N. W. Schaduw ◽  
Chatrien Luzianna Sinjal ◽  
Janny D Kusen ◽  
Erli Y Kaligis ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Cover ◽  
Computer Software ◽  
Digital Camera ◽  
Hard Coral ◽  
Software Technology ◽  
Technological Developments ◽  
Moderate Condition ◽  
Hard Coral Cover

Coral reefs are coastal ecosystems with the highest level of diversity with around one million species worldwide. Corals are invertebrates belonging to the Phylum Coelenterate (hollow animals) or Cnidaria. The Underwater Photo Transect (UPT) method is a method that utilizes technological developments, both digital camera technology and computer software technology. Capturing data in the field in the form of underwater photos carried out by shooting using a Canon G-16 camera equipped with a waterproof protector (housing). In this study it can be seen that the percentage of hard corals at point 1 is in the medium category, point 2 is in the medium category, and point 3 is in the bad category with the percentage of hard coral cover as follows: point 1 (one) 29.75%, point 2 (two) 31.16%, and point 3 (three) 24.26%, of the three points can represent the overall condition of the coral reefs in Malalayang Beach which is in moderate condition with a percentage of 28.39%.Keywords: Malalayang Beach, Coral Reef, UPT, CPCe

scholarly journals New Scales to Guide the Assessment of Hard Coral Cover and Diversity in the Philippines

2020 ◽  
pp. 121-126
Keyword(s):  
Ecosystem Services ◽  
Coral Reefs ◽  
Coral Cover ◽  
Rapid Identification ◽  
The Philippines ◽  
Hard Coral ◽  
Hard Coral Cover ◽  
Assessment Scales

Coral reefs supply vital ecosystem services to the Philippines. Safeguarding these services requires the rapid identification of reefs that provide most services, and identification is best made by measuring hard coral cover and diversity and using updated and locally relevant assessment scales on these measurements. The use of these assessment scales has advantages and is recommended to update and improve Philippine laws.

scholarly journals STATUS TERUMBU KARANG DAN IKAN KARANG DI GILI MATRA, NUSA TENGGARA BARAT

2020 ◽  
Vol 14 (1) ◽  
pp. 14
Author(s):  
Eghbert Elvan Ampou ◽  
Suciadi Catur Nugroho ◽  
Nuryani Widagti
Keyword(s):  
Water Quality ◽  
Coral Reef ◽  
Coral Cover ◽  
Reef Fishes ◽  
Coral Mortality ◽  
Hard Coral ◽  
Mortality Index ◽  
Fish Group ◽  
Hard Coral Cover ◽  
Reef Condition

This study aims to identify the status of reef fishes and coral reefs in Gili Meno, Air, and Trawangan or Gili Matra waters. This area is part of the North Lombok Regency, West Nusa Tenggara Province. Field observation was conducted on September 2011 at 11 (eleven) diving points. The video-transect method was used for observing the coral reef condition, while reef fishes abundance was observed by using visual-census method. The parameter that used to determine the condition of coral reef in study location are the percentage of live hard coral cover and index of coral mortality. In general, the result shows that percentage of live hard coral cover in each diving point ranged from 4.4% - 37.2% and the Coral Mortality Index (IMK) ranged form 0.40-0.92. The values describe that the condition of coral reef at eleven diving points vary from fair until poor condition. Current status of coral reef condition showed an insignificant increase from bad to moderate during the period 2011 -2018. There were 23 families of reef fishes from 46 genera were found during the study consisting of 16 genera of target fish groups, 5 genera of indicator fish group, and 25 genera of major fish group. The water quality is still within the limits of environmental quality standards.   Keywords: Reef fish, coral reef, Mortality Index, water quality, Gili Matra

scholarly journals Coral Reef Degradation Due to ‘Ship Grounding’ in Indonesia: Case Study of Ship Aground in Bangka-Belitung Waters by Mother Vessel MV Lyric Poet

2020 ◽  
Vol 12 (2) ◽  
pp. 263
Author(s):  
Idris Idris ◽  
Neviaty P. Zamani ◽  
Suharsono Suharsono ◽  
Fakhrurrozi Fakhrurrozi
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Species ◽  
Coral Cover ◽  
Conservation Status ◽  
Three Dimensional ◽  
Live Coral ◽  
Hard Coral ◽  
Lyric Poet ◽  
Ship Grounding

HighlightDamage to coral reefs by ship aground is twice the area of a football fieldFound four zones of damage including runoff, dune, blow and dispersalMortality of live coral and other benthic biota ranges from 75-100% in the affected locationThe form of damaged live coral growth is predominantly slow growing.Eight hard coral species were found on the IUCN-Redlist list with a vulnerable status.AbstractShip grounding on coral reefs often results in physical and biological damage, including dislodging and removal of corals from reefs, destruction of coral skeletons, erosion and removal of sediment deposits, and loss of three-dimensional complexity. Indonesia, as an archipelagic country, is very vulnerable to various pressures; for example, the case of ship grounding is a great concern of scientists, managers, divers, and sailors themselves. Most of the damage is very severe. The purpose of the research conducted is to identify the condition of the live coral cover, mapping the type and extent of coral reef damage, affected coral species, their conservation status, and to quantify the extent of the area of coral reef damage. Measuring the extent of damage to coral reef ecosystems using the fishbone method, while the level of damage and its impact was measured using the Underwater Photo Transect (UPT) and belt transect method. The event of the grounding of the MV Lyric Poet on the Bangka Waters, Bangka-Belitung Province, has caused damage to the coral reef ecosystem. There are four damage zones identified, i.e., trajectory, mound, propeller, and dispersion zone. Corals are damaged with a total area of 13.540m2; equivalent to twice that of an international football field. Diversity of hard coral found as many as 49 species included in the CITES-Appendix II. A total of eight protected species are included in the IUCN Red List with extinction-prone status.

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 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 11-yr of coral community dynamics in reefs around Dahab (Gulf of Aqaba, Red Sea): the collapse of urchins and rise of macroalgae and cyanobacterial mats

Coral Reefs ◽  
2020 ◽  
Vol 39 (6) ◽  
pp. 1605-1618
Author(s):  
Miriam Reverter ◽  
Matthew Jackson ◽  
Nauras Daraghmeh ◽  
Christian von Mach ◽  
Nina Milton
Keyword(s):  
Coral Reef ◽  
Red Sea ◽  
Coral Cover ◽  
Negative Relationship ◽  
Gulf Of Aqaba ◽  
Benthic Fish ◽  
Hard Coral ◽  
Cyanobacterial Mats ◽  
Invertebrate Assemblages ◽  
Hard Coral Cover

AbstractCorals from the Gulf of Aqaba (northern Red Sea) are resilient to high temperatures and therefore this region is regarded as globally important for reef conservation. However, long-term dynamics of coral reef assemblages from the Gulf of Aqaba remain largely understudied. In this study, we analysed the change in benthic, fish and invertebrate assemblages of reefs around Dahab (South Sinai, Egypt) between 2009 and 2019. We also studied the individual trajectories of coral reef benthic categories, key invertebrate and fish species and their relationship. As site emerged as the main factor explaining the variability in coral reef communities, we identified three clusters of sites with similar assemblages. Both benthic, fish and invertebrate assemblages changed considerably at the three site clusters between 2009 and 2019. We found significant increases in fleshy macroalgae (~ 6 to 15%) and cyanobacterial mats (~ 6 to 12%) in all site clusters. Although not observing a significant reduction of hard coral cover, both macroalgae mat cover and cyanobacterial mat cover were significantly negatively related to hard coral cover and hard coral disease. Soft coral cover (mainly corals from the Xeniidae family) decreased significantly in two of the site clusters, their cover being negatively related to macroalgal and cyanobacterial cover. Significant declines in grazer urchins were observed at all site clusters, and a strong negative relationship was found with macroalgae and cyanobacterial mats cover, suggesting urchin decline as one of the main drivers behind algal increases. Different site clusters had different fish trajectories (butterflyfish, parrotfish, surgeonfish and predators), with only damselfish densities significantly decreasing at all sites. A significant decrease in damselfish densities was related to increases in cyanobacterial mats. These findings suggest that if macroalgae and cyanobacteria continue to increase, Dahab coral reefs could undergo degradation, and therefore, more studies are needed to elucidate the drivers behind these algal increases.

scholarly journals Early trajectories of benthic coral reef communities following the 2015/16 coral bleaching event at remote Aldabra Atoll, Seychelles

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Anna Koester ◽  
Valentina Migani ◽  
Nancy Bunbury ◽  
Amanda Ford ◽  
Cheryl Sanchez ◽  
...  
Keyword(s):  
Coral Reef ◽  
Water Temperature ◽  
Coral Bleaching ◽  
Coral Cover ◽  
Bleaching Event ◽  
Hard Coral ◽  
Reef Communities ◽  
Remote Sites ◽  
Hard Coral Cover ◽  
Coral Reef Communities

Abstract Documenting post-bleaching trajectories of coral reef communities is crucial to understand their resilience to climate change. We investigated reef community changes following the 2015/16 bleaching event at Aldabra Atoll, where direct human impact is minimal. We combined benthic data collected pre- (2014) and post-bleaching (2016–2019) at 12 sites across three locations (lagoon, 2 m depth; seaward west and east, 5 and 15 m depth) with water temperature measurements. While seaward reefs experienced relative hard coral reductions of 51–62%, lagoonal coral loss was lower (− 34%), probably due to three-fold higher daily water temperature variability there. Between 2016 and 2019, hard coral cover did not change on deep reefs which remained dominated by turf algae and Halimeda, but absolute cover on shallow reefs increased annually by 1.3% (east), 2.3% (west) and 3.0% (lagoon), reaching, respectively, 54%, 68% and 93% of the pre-bleaching cover in 2019. Full recovery at the shallow seaward locations may take at least five more years, but remains uncertain for the deeper reefs. The expected increase in frequency and severity of coral bleaching events is likely to make even rapid recovery as observed in Aldabra’s lagoon too slow to prevent long-term reef degradation, even at remote sites.

scholarly journals ANALISIS STRATEGI PENGELOLAAN EKOSISTEM TERUMBU KARANG DI KAWASAN KONSERVASI PERAIRAN DAERAH LIUKANG TUPPABIRING

2020 ◽  
Vol 3 (2) ◽  
pp. 193-204
Author(s):  
Tenri A R ◽  
Danial Sultan ◽  
Asbar Asbar
Keyword(s):  
Coral Reef ◽  
Law Enforcement ◽  
Coral Reefs ◽  
Coral Cover ◽  
Strong Support ◽  
Marine Biodiversity ◽  
Prevention Measures ◽  
Eretmochelys Imbricata ◽  
Coral Reef Ecosystems ◽  
The Government

Liukang Tuppabiring is a waters with marine biodiversity potential large enough to be developed and managed sustainably. Utilization around the coral reefs in the waters of the Liukang Tuppabiring sub-district currently tends to lead to destructive use, so it is necessary to take damage prevention measures immediately. The results showed the condition of coral cover in the medium and damaged, while at stations 1,2,3,4,6 (25,47-41.07%), while conditions were good at station 5 (56.20%). The number of individual reef fish is 290 individuals from 46 species of 22 genera 11 families. At the research location also identified one type of protected biota namely Hawksbill (Eretmochelys imbricata). Coral damage that occurred at 6 observation stations was more caused by the practice of using destructive and environmentally unfriendly fishing equipment such as bombs, trawls, and the use of poisons. The priority strategies undertaken in the management of coral reefs at the study site are 1) Management of environmentally friendly coral reefs where the community as a manager with strong support from the Government; 2) Making clear rules related to utilization in coral reef areas and establishing a POSMAKWAS institution to avoid more severe coral damage; 3) Improve supervision and law enforcement must be firm in relation to the use of fishing gear that can damage coral reef ecosystems.

scholarly journals Dampak Snorkeling Terhadap Persen Tutupan Terumbu Karang Di Pulau Gili Labak Sumenep Madura

2021 ◽  
Vol 10 (2) ◽  
pp. 151-161
Author(s):  
Insafitri Insafitri ◽  
Eka Nurahemma Ning Asih ◽  
Wahyu Andy Nugraha
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Species ◽  
Coral Cover ◽  
Observation Time ◽  
Live Coral ◽  
Marine Tourism ◽  
Coral Reef Ecosystems ◽  
Potential Impact ◽  
The Impact

Wisata snorkeling terumbu karang di perairan pulau Gili Labak merupakan salah satu sektor wisata bahari yang sedang dikembangkan oleh pemerintah kebupaten Sumenep Madura sejak tahun 2014 hingga saat ini. Peningkatan jumlah wisatawan yang terjadi pada beberapa tahun terakhir dapat menimbulkan resiko tekanan dan kerusakan ekosistem terumbu karang di area snorkeling secara berkala. Penelitian ini bertujuan untuk mengetahui dampak kegiatan wisatawan sebelum, selama dan sesudah snorkeling terhadap ekosistem terumbu karang yang dikaji dengan mengetahui jenis karang yang mendominasi, status persentase tutupan terumbu karang serta potensi Dampak Wisata Bahari (DWB) snorkeling di lokasi wisata snorkeling pulau Gili Labak Sumenep. Persentase penutupan lifeform karang pulau Gili Labak khususnya di area snorkelling didominasi oleh karang hidup sebanyak 74% dan unsur abiotik sebesar 22%. Jenis karang yang mendominasi pulau Gili Labak adalah Acropora Branching sebesar 19,88% dan Coral Foliose sebesar 10,25%. Selama waktu 6 minggu pengamatan terjadi penurunan total karang sebesar 0,64% yang termasuk kategori rusak ringan, dimana sebagian besar kerusakan terjadi pada karang dengan bentuk pertumbahan branching misalnya Acropora Submassive dan Coral Submassive. Penurunan persen tutupan karang yang tinggi terjadi setelah kegiatan snorkeling (after) yang dilakukan oleh wisatawan. Analisa potensi Dampak Wisata Bahari (DWB) snorkeling pada terumbu karang di perairan Gili Labak selama 6 minggu pengamatan masuk dalam kategori rendah yaitu berkisar 0,052% hingga 0,085%. Faktor penyebab kecilnya nilai presentase Dampak Wisata Bahari (DWB) ini diduga karena waktu pengamatan cenderung pendek dan jenis karang yang mendominasi yaitu Acropora. Acropora memiliki kemampuan regenerasi lebih cepat dibandingkan jenis lainnya.  The snorkeling activity around coral reefs in the waters of Gili Labak is one of the marine tourism sectors that is being developed by the Sumenep Madura district government since 2014. Increasing number of tourists that occurs in recent years pose a risk of pressure and damage to coral reef ecosystems in the snorkeling area. This study aims to determine the impact of tourist activities before, during and after snorkeling on coral reef ecosystems that are studied by knowing the type of dominated coral, the percentage status of coral cover and the potential Impact of snorkeling at the snorkeling sites of the island of Gili Labak Sumenep. The percentage of coral cover in the island of Gili Labak especially in the snorkelling area is dominated by live coral ( 74%) and abiotic elements by 22%. Coral species that dominate the island of Gili Labak are Acropora Branching at 19.88% and Coral Foliose at 10.25%. During the 6-week observation there was a decrease in live coral cover by 0.64% which was categorized as minor damage, most of the damage occurred to branching   Acropora, sub-massive Acropora and Coral Sub-massive. The high percent decrease in coral cover occurred after snorkeling conducted by tourists. Analysis of the potential impact of snorkeling on coral reefs in the waters of Gili Labak for 6 weeks of observation is in the low category, ranging from 0.052% to 0.085%. The factor causing the small impact of Marine Tourism is presumably because the observation time tends to be short and the dominant coral species is Acropora. Acropora has the ability to regenerate faster than other types.

Sign in / Sign up

Export Citation Format

Share Document