scholarly journals Analysis of hard coral condition on coral reef ecosystem in Ternate Island

2021 ◽  
Vol 890 (1) ◽  
pp. 012055
Author(s):  
R E Paembonan ◽  
F Ismail ◽  
S Baddu ◽  
Najamuddin ◽  
I Tahir ◽  
...  
Keyword(s):  
Coral Reef ◽  
Species Diversity ◽  
Diversity Index ◽  
Coral Cover ◽  
Environmental Parameters ◽  
Hard Coral ◽  
Coral Reef Ecosystem ◽  
Dominance Index ◽  
A Value ◽  
Reef Ecosystem

Abstract Hard coral is a type of coral building structure in coral reef ecosystems. Hard coral is a coral reef entity that plays an important function in a coral reef ecosystem, especially related to physical and ecological functions in shallow marine waters environment. This study aimed to study percentages of coral cover, species life form, diversity index, dominance index, and distribution clusters of hard corals based on environmental parameters around Ternate Island. Hard coral cover sampling was carried out systematically using the underwater photo transect (UPT) method. The number of sampling stations were 30 location points with 750 photos. The method used for analyzing ecological conditions of hard corals was coral point count with excel extensions (CPCe). Environmental parameters measured included salinity, temperature, pH, brightness level, and dissolved oxygen. The distribution of hard coral clusters was analyzed statistically using the classify-hierarchical cluster. Study results showed that coral cover percentages ranged from 19% to 93% with an average cover of 67%, species diversity range was 7 to 40 species with an average of 19 species, diversity index (H ') with a value of 1.14 to 6.02 with an average of 2.07, dominance index (D) with a value of 0.13 to 0.53 with an average of 0.23. The results of the analysis of the distribution of hard corals consisted of four clusters. The study also found that distribution of hard coral clusters in Ternate Island was related to substrate topography.

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 

scholarly journals Kelimpahan dan Biomassa Ikan Karang Famili Scaridae pada Ekosistem Terumbu Karang di Perairan Pulau Kembar, Karimunjawa, Jepara

2020 ◽  
Vol 9 (2) ◽  
pp. 159-166
Author(s):  
Fran Ciputra Tambunan ◽  
Munasik Munasik ◽  
Agus Trianto
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Cover ◽  
Fish Biomass ◽  
Hard Coral ◽  
Coral Reef Ecosystem ◽  
The Family ◽  
Coral Fish ◽  
Hard Coral Cover ◽  
Reef Ecosystem

ABSTRAK : Ikan kakatua merupakan salah satu ikan karang yang dapat membantu kehidupan pada ekosistem terumbu karang. Scaridae mengumpulkan berbagai spesies ganggang dengan cara memakan algae pendek yang menutupi substrat karang sehingga dapat mempengaruhi pertumbuhan terumbu karang. Sebaran Scaridae sangat ditentukan oleh kondisi dan variasi habitat terumbu karang. Penelitian ini bertujuan untuk mengetahui kelimpahan dan biomassa dari ikan Famili Scaridae. Penelitian dilaksanakan pada bulan Oktober 2018 di Perairan Pulau Kembar, Karimunjawa, Jepara. Pengambilan data  ikan karang menggunakan metode UVC dan data substrat terumbu karang diambil menggunakan metode LIT sepanjang 100 meter sejajar garis pantai dengan pengamatan pada dua kedalaman yaitu 3m dan 10m. Berdasarkan hasil penelitian, didapatkan 11.459 individu yang termasuk dalam 49 spesies ikan karang yang berasal dari 14 famili. Ikan karang dari Famili Scaridae ditemukan sebanyak 1059 individu yang termasuk dalam 4 spesies ikan karang yang berasal dari 2 genus. Nilai kelimpahan ikan karang dari Famili Scaridae berkisar antara 48 hingga 204 ind/500m2, kelimpahan terendah berada pada stasiun 1 dan tertinggi berada di stasiun 3.  Nilai biomassa ikan karang dari Famili Scaridae berkisar antara 219,7–2491,7 kg/ha, biomassa terendah berada pada stasiun 1 dan tertinggi berada di stasiun 3.  Berdasarkan hasil penelitian dapat disimpulkan bahawa Pengaruh tutupan karang keras hidup sangat berpengaruh terhadap kelimpahan dan biomassa ikan karang dari Famili Scaridae. ABSTRACT : Parrot fish is one of the reef fish that can help life on the coral reef ecosystem. Scaridae collect various species of algae by eating short algae that cover the coral substrate so that it can affect the growth of coral reefs. Scaridae distribution is highly determined by the condition and variety of coral reef habitats. This study aims to examine the abundance and biomass of Scaridae Family fish. The study was conducted in October 2018 in the waters of the Kembar Islands, Karimunjawa, Jepara. Retrieval of reef fish data using UVC method and coral reef substrate data were taken using the LIT method along 100 meters along the coastline with observations at two depths in 3m and 10. Based on the results, 11,459 individuals were included in 49 species of reef fish originating from 14 families. Coral fish from the Family Scaridae were found as many as 1059 individuals included in 4 species of reef fish originating from 2 genera. The value of coral fish abundance from the Scaridae Family ranges from 48 to 204 ind / 500m2, the lowest abundance is at station 1 and the highest is at station 3. The reef fish biomass value of the Scaridae Family ranges from 219.7 - 2491.7 kg / ha, biomass the lowest is at station 1 and the highest is at station 3. Based on the results of the study it can be concluded that the effect of live hard coral cover is very influential on the abundance and biomass of reef fish from the Scaridae Family.

scholarly journals RELATIONSHIP BETWEEN THE WAKATOBI NATIONAL PARK ZONATION SYSTEM AND DYNAMICS OF CORAL REEF ECOSYSTEM CONDITION

2017 ◽  
Vol 1 (2) ◽  
pp. 147-156
Author(s):  
Fikri Firmansyah ◽  
Adib Mustofa ◽  
Estradivar ◽  
Adrian Damora ◽  
Christian Novia N Handayani ◽  
...  
Keyword(s):  
Coral Reef ◽  
National Park ◽  
Coral Cover ◽  
Fish Abundance ◽  
Fish Biomass ◽  
Hard Coral ◽  
Coral Reef Ecosystem ◽  
Underwater Visual Census ◽  
Hard Coral Cover ◽  
Reef Ecosystem

The zonation can be evaluated by observing changes in ecosystem and social status in Wakatobi National Park (Taman Nasional Wakatobi – TNW). Coral reef ecosystem is one of the parameters indicating the effectiveness of zonation system. This study grouped TNW zones into No Take Zone (NTZ – area larang ambil; ZI, ZPB, ZPr) and use zone (UZ – area pemanfaatan; ZPL, ZPU) to determine impact of zonation implementation between 2009 – 2016 on coral reef ecosystem. Three parameters (benthic coverage, fish abundance and fish biomass) were determined by Point Intercept Transect (PIT) and underwater visual census (UVC) methods and all of these data were tested using two-way ANOVA. Hard coral coverage fluctuated between 19 – 32% however, NTZ and UZ had no significant hard coral cover differences (F=2,182, df=1, P=0,14). Abundance of carnivour fish (F=0,53, df=1, P=0,46) and herbivour fish (F=1,98, df=1, P=0,17) were similar between those two zones. Fish bombing and poisoning were two major threats until 2007. However, sand mining and waste management has overcome two previous major threats by 2017. Zonation system and its implementation can be one of mangement effectiveness indicators. Support Wakatobi National Park Authority, it is recommended to apply harvest control rules (HCR), regular patrol and monitoring and stakeholders capacity buiding. Keywords Benthic cover; fish abundance; fish biomass

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 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 HUBUNGAN KEPADATAN SIPUT (Drupella) DENGAN KONDISI EKOSISTEM TERUMBU KARANG DI PERAIRAN PULAU SEMUJUR PROVINSI KEPULAUAN BANGKA BELITUNG

2019 ◽  
Vol 13 (2) ◽  
pp. 152-161
Author(s):  
ISTIQOMAH ISTI QOMAH ◽  
Okto Supratman ◽  
Indra Ambalika Syari
Keyword(s):  
Coral Reef ◽  
Coral Cover ◽  
Principal Component ◽  
Total Suspended Solid ◽  
Data Retrieval ◽  
Suspended Solid ◽  
Coral Reef Ecosystem ◽  
Tabulate Coral ◽  
Belt Transect ◽  
Reef Ecosystem

This research aims to analyse density of Drupella's on coral reef ecosystem, analyze the percentage of coral cover and analyze the relationship between the density of Drupella with environmental factors and conditions coral reef ecosystem in the waters of Semujur Island. Research data retrieval in April 2019 in the waters of Semujur Island. Drupella data retrieval using Belt Transect method and coral reef data retrieval using Line Intercept Transek. The results showed that the highest overall density of Drupella is in the area of coral, which is 244 ind/100m2 and the lowest density of Drupella is in the landscaped area of 31 ind/100m2, coral cover percentage Highest in the area of coral average of 72.20% and the lowest 23.44% while on the highest cover area of 54.96% and lows of 29.14%. Principal Component Analysis (PCA) in the reef flats and Drupella watersheds correlates with temperature, current, pH, Dissolved Oxygen and Total Suspended Solid. Correspondence Analysis (CA) in the reef flats was found that Drupella was positively correlated with lifeforms acropora submassive, acropora tabulate, coral submassive, and coral massive. In the slope area of the Drupella positively correlated with the type of lifeform acropora digitate, acropora submassive, acropora tabulate, coral submassive, and coral branching.

scholarly journals Konservasi dan Kondisi Terumbu Karang di Kampung Saporkren Distrik Waigeo Selatan, Kabupaten Raja Ampat, Papua Barat

2018 ◽  
Vol 5 (2) ◽  
pp. 68-76
Author(s):  
Marthen L.R. Bartholomeus ◽  
Dirk Y.P. Runtuboi ◽  
Rosye H.R. Tanjung
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Protected Areas ◽  
Flow Velocity ◽  
Marine Protected Areas ◽  
Coral Cover ◽  
Coral Reef Ecosystem ◽  
Village Community ◽  
Papua Barat ◽  
Reef Ecosystem

Conservation effort and knowledge on coral reef ecosystem are necessary to protect marine ecosystem. Coral reef ecosystem is very important to support marine biota especially fishes and benthos. The presence of coral reef indirectly support local people income, therefore is is necessary to conserve coral reef ecosystem. District of South Waigeo is one of tourist area as well as preserve area in Raja Ampat Regency of Papua Barat Province. The aim of this study is to identify the current condition of coral reef in Saporken Village of South waigeo District. Data were collected by survey method using coral reefs Point intercept transect method, observation and interviews to determine the social, economic and cultural impact., and measures taken to manage coral reef management in village Saporkren Marine Protected Areas. The results showed that knowledge Saporkren Village community, the conservation community knows about how destructive such arrests are not carried out the bombing, while the traditional way people work is local wisdom. Condition of coral cover in the village of Marine Protected Areas Saporkren in good condition (live coral cover=51%) and very good water quality, flow velocity at high tide ranged from 4.25 to 22.3 cm/sec and the flow velocity at low tide over small ranging from 5.07 to 19.60 cm/sec, salinity ranged from 32–35‰ and wave height ranged from 0.75 m. Based on the results of this study concluded that: Village community know Saporkren conservation activities of local government programs, and the traditional way to preserve coral reef still implemented.Key words: Conservation, coral reefs, Saporkren village, Raja Ampat. 

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

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  

scholarly journals KONDISI EKOSISTEM TERUMBU KARANG DI PERAIRAN KRUENG RAYA, KABUPATEN ACEH BESAR

2021 ◽  
Vol 8 (1) ◽  
pp. 11
Author(s):  
Nurul Najmi ◽  
M Rizki Fazillah ◽  
Muhammad Agustiar
Keyword(s):  
Coral Reef ◽  
Coral Cover ◽  
Live Coral ◽  
Coral Mortality ◽  
Coral Reef Ecosystem ◽  
Dead Coral ◽  
High Increase ◽  
Mortality Index ◽  
Malacca Strait ◽  
Reef Ecosystem

This study aims to analyze the condition of the coral reef ecosystem including the substrate, genus composition, and the level of coral mortality in the waters of the Malacca Strait, Masjid Raya District, Aceh Besar District. The research was conducted from October 2016 to October 2019 in the waters of the Malacca Strait, Masjid Raya District, Aceh Besar District. The research site is divided into three stations consisting of Lhok Mee Station, Ahmad Rhang Manyang and Benteng Inong Balee Station. Data were collected using the Point Intercept Transect method. The results showed that the condition of coral reefs at Lhok Mee Station was in the damaged category with coral cover ranging from 6.56% - 13.44%. Ahmad Rhang Manyang Station is included in the moderate to good category with coral cover ranging from 38.75% - 67.19%. Meanwhile, Benteng Inong Balee Station is included in the medium category with coral cover ranging from 45.94% - 56.88%. The monitoring results found that 30 coral genera with the highest composition of the coral genera came from the Porites genus, while other coral genera were unevenly distributed. The value of the mortality index for Lhok Mee Station shows a high increase in mortality of live coral to dead coral. Meanwhile, Ahmad Rhang Manyang and Benteng Inong Balee stations have low coral mortality index values.

Sign in / Sign up

Export Citation Format

Share Document