scholarly journals Condition of Coral Reefs and Reef Fishes in Dofa Village, Sula Islands Regency

2021 ◽  
Vol 5 (1) ◽  
pp. 431-436
Author(s):  
Alimuddin Alimuddin ◽  
Nurul Chayati ◽  
Tedy Murtejo ◽  
La Ode M. Gunawan Giu ◽  
Ria Fitri
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Current Velocity ◽  
Reef Fishes ◽  
Fish Diversity ◽  
Live Coral ◽  
Coral Reef Ecosystem ◽  
Coral Fish ◽  
Index Value ◽  
Reef Ecosystem

Coral reefs are unique among ocean associations or communities that are entirely formed by biological activity. This study aims to determine the condition of coral reefs and reef fishes in Dofa Village, West Mangoli District, Sula Islands, 2018. Collecting coral data used the Line Intercept Transect (LIT) method, while coral fish data collection used the visual census method. Water parameters measured are temperature, salinity, degree of acidity (pH), brightness and current velocity. Based on observations, the water temperature ranges from 29.33° C - 29.9° C. The salinity of the waters ranges from 29.67 ‰ - 34 ‰. The degree of acidity is 7.5 which supports the life of coral reef. The water brightness level is 65% - 100%. The current velocity ranges from 0.02 m / s to 0.05 m / s. The condition of the coral reef ecosystem based on the percentage of hard coral cover ranged from 21.02% - 33.7% with low to medium category. The coral mortality index at the study location was small where at station 1 it was 0.487, station 2 was 0.335 and station 3 was 0.205, meaning that there was no significant change for live coral reefs. The abundance of reef fishes ranged from 0.52 ind/m2 - 1.22 ind/m2 which was dominated by the Pomacentridae and Labridae families where the two families were groups of fish that used coral reefs as habitat for feeding ground. The index value of coral fish diversity in the coral reef ecosystem at all stations ranged from 0.58 to 3.60 where the diversity index value was in the low to medium category. The uniformity index is included in the medium category with values ​​ranging from 0.58 to 0.63 which illustrates that the difference in the number of individuals for each species is not too significant. The dominance index of reef fishes at the observation station is very small, ranging from 0.03 - 0.07 which indicates that the dominance of the species is very low, so that the condition of the reef fish community is relatively stable.

scholarly journals Marine Ecotourism Potential in Unggeh Island Tapanuli Tengah Regency, North Sumatra, Indonesia

2020 ◽  
Vol 12 (2) ◽  
pp. 250
Author(s):  
Zulham Apandy Harahap ◽  
Ipanna Enggar Susetya
Keyword(s):  
Coral Reef ◽  
Carrying Capacity ◽  
Reef Fishes ◽  
Fish Diversity ◽  
Live Coral ◽  
Coral Reef Ecosystem ◽  
Chemical Oceanography ◽  
Physical And Chemical ◽  
Marine Ecotourism ◽  
Reef Ecosystem

Highlight Calculated and assested the percentage of live coral coverIdentified reef fishes and calculated fish abundanceMeasured physical and chemical oceanography parameter Analyzed carrying capacity and suitability of Unggeh Island for tourism utilization especially marine diving and snorkeling.AbstractUnggeh Island located in the administration of the Village Sitardas Badiri District, Central Tapanuli Regency into a marine tourism area. The development of marine ecotourism Unggeh Island is an alternative to the economic improvement of so- ciety. This study aims to assess the potential of coral reef ecosystem in the form of percentage of life form coral, coral species and species and abundance of reef fish found in Unggeh Island waters of Central Tapanuli Regency and to analyze the suitability of coral reef ecosystem in Unggeh Island for tourism utilization es- pecially marine diving and snorkeling. Coral reef community data collection was done by using SCUBA divers equipment, in identifying The coral community used underwater photo transect (UPT) method, while coral fish diversity was observed by underwater visual census (UVC) method. Physical and chemical oceanography parameter data such as temperature, salinity, pH, current, transparency and DO are performed at each observation station. The survey results of coral reef observation at four stations showed different results. Percentage of live coral cover of station 1 to 4 were 25.40 %, 12.33%, 28.53%, and 25.53 respectively. Therefore, reef fishes found 36 species that consist of ten families and 423 individual fishes. The results showed that Unggeh Island was suitable (S2) for diving and snorkeling activities, with the carrying capacity was 3.054 persons/day.

scholarly journals STRUKTUR KOMUNITAS TERUMBU KARANG DI PERAIRAN TELUK BALIKPAPAN, KALIMANTAN TIMUR

Jurnal Segara ◽  
2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Niken Financia Gusmawati ◽  
Candra Dwi Puspita ◽  
Herlina Ika Ratnawati
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Environmental Changes ◽  
Coral Cover ◽  
Nitrate Content ◽  
Marine Biota ◽  
Coral Reef Ecosystem ◽  
Coral Reef Ecosystems ◽  
Index Value ◽  
Reef Ecosystem

Coral reefs are ecosystems with high productivity while being very vulnerable to environmental changes. The oil spill incident in Balikpapan Bay in 2018 still caused damage to the coral reef ecosystem in Tanjung Jumlai, Penajam Paser Utara Regency, East Kalimantan due to the use of dispersants in handling oil spills. Research on the condition of coral reefs is carried out to ensure the sustainability of the benefits of ecosystem products and services provided by coral reef ecosystems to communities around Balikpapan Bay. Coral reef research has been carried out at three transect station locations in the Tanjung Jumlai reef area. This research is aimed to determine the distribution, abundance, and structure of coral reef ecosystems in these waters. The study was conducted in October 2019. Data collection was carried out using the Point Intercept Transect (PIT) method. The results showed that the average percentage of coral cover was 55.7% with a good coral cover category. Substrate covering the bottom of the coral reef ecosystem is dominated by Acropora Tubulate and Acropora Branching from the biotic component, and Dead Coral with Algae and Rubble from the abiotic component. Diversity index value (H') in the waters is categorized as low species richness. This research has been identified only 10 genera in the study area where 9 genera are hard coral species. Similarity Index value (E) included in the medium category and dominance index value (D) belong to the medium category which means that there are no species that are very dominant in the observation area. Water quality at station 1 representing all observation stations shows results that the study area are still appropriate for marine biota according to Minister of Environment Decree 51/2004, except for nitrate content. Sediments also show no trace of hydrocarbons.Coral reefs are ecosystems with high productivity while being very vulnerable to environmental changes. The oil spill incident in Balikpapan Bay in 2018 still caused damage to the coral reef ecosystem in Tanjung Jumlai, Penajam Paser Utara Regency, East Kalimantan due to the use of dispersants in handling oil spills. Research on the condition of coral reefs is carried out to ensure the sustainability of the benefits of ecosystem products and services provided by coral reef ecosystems to communities around Balikpapan Bay. Coral reef research has been carried out at three transect station locations in the Tanjung Jumlai reef area. This research is aimed to determine the distribution, abundance, and structure of coral reef ecosystems in these waters. The study was conducted in October 2019. Data collection was carried out using the Point Intercept Transect (PIT) method. The results showed that the average percentage of coral cover was 55.7% with a good coral cover category. Substrate covering the bottom of the coral reef ecosystem is dominated by Acropora Tubulate and Acropora Branching from the biotic component, and Dead Coral with Algae and Rubble from the abiotic component. Diversity index value (H') in the waters is categorized as low species richness. This research has been identified only 10 genera in the study area where 9 genera are hard coral species. Similarity Index value (E) included in the medium category and dominance index value (D) belong to the medium category which means that there are no species that are very dominant in the observation area. Water quality at station 1 representing all observation stations shows results that the study area are still appropriate for marine biota according to Minister of Environment Decree 51/2004, except for nitrate content. Sediments also show no trace of hydrocarbons.

scholarly journals STUDI TENTANG JENIS KRUSTASEA YANG HIDUP DI KARANG BATU DAN PERANANNYA DALAM EKOSISTEM TERUMBU KARANG

OSEANA ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 45-57
Author(s):  
Rianta Pratiwi
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Live Coral ◽  
Coral Reef Ecosystem ◽  
Invertebrate Species ◽  
Large Size ◽  
Coral Communities ◽  
Environmental Balance ◽  
Reef Ecosystem

STUDIES ON CRUSTACEANS SPECIES LIVING IN THE CORAL REEF AND THEIR ROLE IN ECOSYSTEM. Crustaceans are one of the most specis invertebrates in coral reefs, comprising approximately 20 % of all invertebrate species. This taxa often found clearly living in coral communities. The order Decapoda is the most common crustaceans observed the coral reefs due to their relatively large size and having bright colours. In addition, decapods contribute in the environmental balance and having important roles in coral reef ecosystem such as defending live coral from predators and helping growth of corals.

scholarly journals CONDITION OF CORAL AND REEF FISH IN THE LOCATION OF FISH CATCHING USING DYNAMITE FISHING IN KAPOPOSANG WATER PARK AND THE SURROUNDING SEA

2020 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Mahmudin Mahmudin ◽  
Chair Rani ◽  
Hamzah Hamzah
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Cover ◽  
Low Cost ◽  
Fish Abundance ◽  
Live Coral ◽  
Coral Reef Ecosystem ◽  
Control Location ◽  
Target Fish ◽  
Reef Ecosystem

Dynamite fishing is one of the causes of damage to the coral reef ecosystem in Indonesia. Fishing activities using explosives (dynamite fishing) occur because of the desire of fishermen to get a lot of catch with low cost in a short time. Kapoposang Water Park (WP) is a region rich in marine biological resources. However, dynamite fishing activities which are still found within the area have caused the coral reef ecosystem to be severely damaged. The results showed a lower difference in the percentage of live coral cover at dynamite fishing locations (DF1, DF2) compared to control locations (K1, K2). In addition, the highest average values of coral fish abundance were found at locations K1, DF1, and DF2. Conversely, the results of the analysis found the lowest fish abundance at the K2 location. Different from the average number of reef fish species that were higher at the control location (K1, K2) compared to dynamite fishing locations (DF1, DF2). For the target fish biomass there is no real difference between the control location and dynamite fishing.

scholarly journals PERANAN EKOLOGIS SHIPWRECK ATAU EXPOSED SHIPWRECK SEBAGAI MEDIA HIDUP KARANG DI PULAU BAWEAN DALAM UPAYA PERLINDUNGAN, PENGEMBANGAN DAN PEMANFAATAN SHIPWRECK ATAU EXPOSED SHIPWRECK

2018 ◽  
Vol 38 (2) ◽  
pp. 172-191
Author(s):  
Heny Budi Setyorini ◽  
Hery Priswanto ◽  
Ahmad Surya Ramadhan
Keyword(s):  
Coral Reef ◽  
Cultural Heritage ◽  
Scuba Diving ◽  
Reef Fishes ◽  
Research Data ◽  
Coral Reef Ecosystem ◽  
Ecological Value ◽  
Reef Ecosystem

Metal salvage and theft activities have eliminated most shipwrecks at Nusa Island, and exposed shipwrecks in Gosong Gili, Bawean Island. In order to give recommendations for its conservation efforts, this study aims to identify the remaining shipwrecks or exposed shipwrecks at Nusa Island and Gosong Gili, and the types of corals and fishes in it. This study aims to prove that shipwrecks or exposed shipwrecks is not only having historical and economical value, but also ecological value for the survival of coral reef ecosystem. This is a descriptive-explorative research, data were gathered by underwater survey using GPS Map Sounder, and SCUBA diving. Shipwrecks at Nusa Island is only 30% left in fragmented form of mast, machine, boiler, propeller, ivory vessel, and bricks in the bow area. While the exposed shipwrecks at Gosong Gili is only 20% left in fragmented form boilers, machine, and ivory vessel that might be a cultural heritage according to the UU RI Number 11 of 2010 on Cultural Heritage. At Nusa Island, the corals are consisted of Poritidae and Acroporidae families, and various species reef fishes. While at Gosong Gili, there are more coral families including Merulinidae, Poritidae and Acroporidae, but their reef fishes species are fewer than Nusa island.

scholarly journals Status of Coral Reefs in the Water of Spermonde, Makassar, South Sulawesi

2021 ◽  
Vol 324 ◽  
pp. 03007
Author(s):  
Ni Wayan Purnama Sari ◽  
Rikoh Manogar Siringoringo ◽  
Muhammad Abrar ◽  
Risandi Dwirama Putra ◽  
Raden Sutiadi ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Cover ◽  
Public Awareness ◽  
Live Coral ◽  
Health Index ◽  
Point Count ◽  
Live Coral Cover ◽  
Reef Health ◽  
Index Value

Observations of the condition of coral reefs have been carried out in Spermonde waters from 2015 to 2018. The method used in this observation uses Underwater Photo Transect (UPT), and the data obtained is analyzed using CPCe (Coral Point Count with Excel Extensions) software. The results show that the percentage of coral cover has increased from year to year. The percentage of live coral cover in 2015 was 19.64%, 23.60 in 2016, 23.72% in 2017, and 27.83% in 2018. The increase in live coral cover from year to year is thought to occur due to the availability of nutrients. or increasing public awareness, considering this location is one of the most famous tourist attractions in Makassar. Coral reef health index values can be used to classify coral reef health. Through the analysis of the coral reef health index, an index value of 4 was obtained, which means that the condition of the coral reefs is in the “moderate” category.

scholarly journals APPLICATION OF CORAL TRANSPLANTATION TECHNOLOGY FOR CORAL REEF ECOSYSTEM PROBLEMS IN SALAH NAMA ISLAND, BATUBARA REGENCY

2018 ◽  
Vol 3 (1) ◽  
pp. 18-23
Author(s):  
Ipanna Enggar Susetya ◽  
Desrita ◽  
Zulham Apandy Harahap
Keyword(s):  
Water Pollution ◽  
Coral Reef ◽  
Coral Reefs ◽  
Human Activities ◽  
Coastal Areas ◽  
Coral Reef Ecosystem ◽  
Reef Ecosystem ◽  
Destructive Fishing

Coral reefs are one of the typical ecosystems in coastal areas that have ecological and economicvalue. There are many cases of coral reef damage in Salah Nama Island caused by natural andhuman factors. Coral reefs damage is mostly caused by human activities such as water pollution,destructive fishing and using of ship anchors. Activity of devotion society aims to provideinformation and skills to fishermen groups in Salah Nama Island about coral transplantationtechniques, as well as conducting coral transplantation activities as one of the efforts to preservethe ecosystem of coral reefs. Based on the description of the problems and objectives of devotionsociety, the activities that have been done are counseling to the partner fishermen abouttransplantation and coral benefits in ecosystem, transplantation practice and coral transplantationmonitoring.

scholarly journals Analysis Condition of Coral Reef Covering in Pramuka Island Waters, Seribu Islands using Line Intercept Transect (LIT) Method

2020 ◽  
Vol 2 (2) ◽  
pp. 77
Author(s):  
Rega Permana ◽  
Nora Akbarsyah ◽  
Pringgo KDNY Putra ◽  
Aulia Andhikawati
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Cover ◽  
Life Forms ◽  
Anthropogenic Factors ◽  
Coral Reef Ecosystem ◽  
Marine Tourism ◽  
Tourist Destinations ◽  
Line Intercept ◽  
Reef Ecosystem

The coral reef ecosystem is one of the typical tropical ecosystems with high biodiversity which has an important role both biologically, ecologically, physically as well as socially and economically. Several coral reef areas in Indonesia were reported to have suffered damage, not only due to climate change which has an impact on rising sea surface temperatures and ocean acidification but also due to anthropogenic factors and irresponsible management of marine tourism. This study aimed to analyze the condition of coral reefs based on covering in Pramuka Island, which is one of the famous tourist destinations in the Seribu Islands. The study was conducted using Line Intercept Transect (LIT) method at predetermined coordinate points. The results showed that the dominant coral reef life form was Acropora Submassive (ACS), namely 18.9%, and Acropora Branching (ACB) as much as 12.48%. Besides, the types of life forms found were coral foliase (9.42%), Miliepora Coral (9.2%), Coral Massive (4.8%), Acropora Encrustring (4.24%), and so on. Based on the results of this study, it can be concluded that the condition of coral reefs in Pramuka Island is still relatively good with a total coral cover percentage of 72.38%. Efforts to protect the coral reef ecosystem in this area need to be considered so that its condition can be maintained. 

scholarly journals THE MORPHOLOGICAL AND SPECIES DIVERSITY OF SPONGES ON CORAL REEF ECOSYSTEMS IN THE LEMBEH STRAIT, BITUNG

2016 ◽  
Vol 40 (2) ◽  
pp. 65-77 ◽  
Author(s):  
Tri Aryono Hadi ◽  
Suharsono ◽  
Hadiyanto ◽  
Agus Budiyanto ◽  
Niu Wentao
Keyword(s):  
Coral Reef ◽  
Species Diversity ◽  
Coral Cover ◽  
Critical Factor ◽  
Live Coral ◽  
Coral Reef Ecosystem ◽  
Positive Correlation ◽  
Lembeh Strait ◽  
Sponge Diversity ◽  
Reef Ecosystem

Sponges are one of the most diverse benthos in the coral reef ecosystem. They have many morphological characters that are specific to species, and their existence is influenced by environmental conditions. The aims of this study are to observe the relationship between morphological and species diversity of sponges in coral reef ecosystem in the Lembeh Strait and investigate the most influential environmental factor on sponge diversity. The study was carried out between April and May 2013 at nine study sites. The methods used were belt transect and line intersect transect (LIT) installed parallel to the coastline at approximately 5-meter depth. Our study supports a positive correlation between the morphological diversity and species diversity of sponges. Many of the morphological growth types were specific to sites that have particular characteristics. The percentage of the live coral cover is not a critical factor for sponge diversity in the strait. Instead, dead coral with algae as a benthic category has a significant positive correlation with the morphological and species diversity of sponges. Conversely, rubble as a substrate type has a strong tendency to affect sponge diversity negatively. To conclude, it is important to maintain healthy reefs in order to sustain benthic communities that are valuable to ecological functions and societies. Keywords:sponges, diversity, coral reefs, Lembeh Strait 

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