scholarly journals Conditions of Coral Reef and Target fish in Waters of Maitara Islands

2020 ◽  
pp. 1-16
Author(s):  
Mohdi Umanahu ◽  
Umar Tangke ◽  
Syahnul Sardi Titaheluw
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Good Condition ◽  
Secondary Data ◽  
Visual Observation ◽  
Survey Method ◽  
Coral Reef Ecosystem ◽  
Target Fish ◽  
Fish Group ◽  
Reef Ecosystem

This research was carried out with a survey method during August 2019 with the aim of knowing the biodiversity of target fish and their potential in the coral reef ecosystem in the waters of Maitara Island, North Maluku Province by collecting primary and secondary data in the form of coral reef conditions (lifeform), fish conditions (diversity, uniformity and dominance) as well as environmental parameter data in the form of temperature, salinity, current velocity, and brightness. The collection of data on the condition of coral reefs and fish was carried out simultaneously, namely 1 dive at each station. Visual census method is used for reef fish data. The results of visual observation of reef fish in the waters of Maitara Island found that there were 13 familyes included in the major fish group consisting of 7 familyes, 1 family of indicator fish and 5 target fish groups. The reef fish found at the observation location of station 1 consisted of 59.3% major fish groups, 24.2% target fish and 16.5% indicator fish and at station 2 reef fish consisted of 62.1 major fish groups. %, target fish is 23.8% and indicator fish is 4.1%. Overall, the results of the visual observations of reef fish showed that major fish were the most dominant, found as much as 66.7% of the target fish groups were 23.9% and indicator fish groups were 9.4%. The lack of presence of indicator fish groups shows that the fertility of the coral reef ecosystem in the waters of Maitara Island is no longer in good condition, because the indicator fish group is a type of fish that indicates good and bad parameters of coral reef conditions in the waters.

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.

SUITABILITY OF CORAL REEF ECOSYSTEM CONDITION BASED ON LOCAL ECOLOGY KNOWLEDGE WITH SURVEY METHOD IN EAST COAST OF WEH ISLAND

2017 ◽  
Vol 8 (2) ◽  
pp. 567-583
Author(s):  
Jhon Septin Maurisdo Siregar ◽  
Luky Adrianto ◽  
Hawis Madduppa
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
East Coast ◽  
Local Ecological Knowledge ◽  
Good Condition ◽  
Survey Method ◽  
Ecological Knowledge ◽  
Coral Reef Ecosystem ◽  
Reef Condition ◽  
Reef Ecosystem

Local ecological knowledge (LEK) refers to the knowledge of people in a local community that can be used in assessing environmental conditions as well as reflecting the interaction that occur in an ecosystem. The purpose of this study was to examine condition of coral reef ecosystem based on the LEK’s community in a marine protected area east coast weh island (KKPD PTPW) Sabang. Assessment of the coral reef condition based on the local’s ecological knowledge is justified from the suitability of the area by comparing map of the coral reefs condition based on LEK and observation map of the coral reefs condition during the study. Based on LEK, it is known that in the PTPW Sabang region coral reefs which falls under deteriorated class is found in the northern sea of Kelurahan Kota Atas, while those which falls under good condition class are found in Ie Meule and Ujung Kareng as well as in Anoi Itam except Benteng. Result from the observations done in 13 stations found that sea region near Sumur Tiga, Ujung Kareung and Benteng have a good coral reefs with a coverage range of 51-65 %. While the sea in Ujung Seuke, Anoi Itam and Reuteuk have a moderate coral reefs with a percentage of coverage ranging from 44- 49. Respondents’ perceptions of the coral reef condition during the last 10 years which include 55% respondents in Ie Meule and 74.29% of respondend in Anoi Itam stated that there is an increment of coral reefs coverage.

scholarly journals Kajian Kondisi Terumbu Karang dan Strategi Pengelolaannya di Pulau Panjang, Air Bangis, Kabupaten Pasaman Barat

2015 ◽  
Vol 16 (1) ◽  
pp. 23
Author(s):  
Angreini Oktarina ◽  
Eni Kamal ◽  
Suparno Suparno
Keyword(s):  
Coral Reef ◽  
Swot Analysis ◽  
Coral Cover ◽  
Management Strategies ◽  
Good Condition ◽  
Survey Method ◽  
Coral Reef Ecosystem ◽  
Average Percentage ◽  
The North ◽  
Reef Ecosystem

Coral reef ecosystems are essential for the survival of marine life, but the presence of coral reef are declined and decayed.Methods used in this study was a survey method. To retrieve the condition of coral cover using the line intercept transectwhile to determine management strategies using SWOT analysis. The average percentage of coral cover in 8 point researchstations at 50.10% are still in the good condition, which is in the north 3 m depth 53.51%, north 7 m depth 68.14%, east 3 mdepth 93.29%, east 7 m depth 15.93%, south 3 m depth 75.17%, south 7 m depth 20.53%, west 3 m depth 41.50%, and west7 m depth 32.79%. The strategies for coral reef ecosystem management, among others: 1) community-based management, 2)forming Kelompok Masyarakat Pengawas (Pokmaswas) institutions, 3) establish in Panjang Island as a marine conservationareas, 4) Ko-Management-based, 5) effort to improve the economy in order to support the increased knowledge of theimportance of conservation and management of coral reef ecosystem.

scholarly journals Variasi Temporal Kelompok Ikan Terumbu Karang di Pulau Tidung Kecil Menggunakan eDNA Metabarkoding dan Sensus Visual

2021 ◽  
Vol 24 (3) ◽  
pp. 283-290
Author(s):  
Muhammad Fahmi Zuhdi ◽  
Hawis Madduppa ◽  
Neviaty P. Zamani
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Coral Reef Ecosystem ◽  
Wet Season ◽  
Visual Census ◽  
Underwater Visual Census ◽  
Natural Factors ◽  
Fish Group ◽  
Reef Ecosystem

Coral reef fish are play key role in coral reef ecosystem. The presence of reef fish affected by antrophogenic and natural factors, such seasonal changes. This study aimed to asess the temporal variation of coral reef fish group in Tidung Kecil Island using eDNA metabarcoding and Undewater Visual Census. This research was conducted at December 2019 (West season) and August 2020 (East season). Target group are dominated in west season (64.1%) and east season (59.25%) using eDNA metabarcoding. While, major group fish are the highest relative abundance in both season by using Underwater Visual Census. Family Carangidae are the highest species richness (15 species) in wet season and Serranidae (3 species) in east season, respectively.  Futhermore, famili Pomacentridae are the most richness species in west and east seasons 10 and 11 species respectively. Thus, it can be concluded these two methods are effective for monitoring structure or abundance of coral reef fish based on seasonal variation. Ikan karang menjadi indikator dalam menilai keanekaragaman hayati di ekosistem tersebut. Keberadaan ikan di ekosistem terumbu karang dapat dipengaruhi oleh faktor antropogenik dan faktor alam salah satunya perubahan musim. Penelitian ini bertujuan untuk menganalisis kelimpahan kelompok ikan terumbu karang di Pulau Tidung Kecil menggunakan eDNA metabarkoding dan Sensus Visual. Pengambilan data dilakukan pada bulan Desember 2019 (musim barat) dan Agustus 2020 (musim timur). Ikan target mendominasi pada musim barat dan timur dengan persentase sebesar 64.11% dan 59.25%. Sensus visual berhasil mendeteksi ikan mayor dengan persentase tertinggi 62.5% di musim barat dan 82.8% di musim timur. Famili Carangidae merupakan famili dengan jumlah spesies tertinggi di musim barat (15 species) dan Siganidae di musim timur menggunakan eDNA metabarkoding (3 species). Hasil UVC menunjukkan famili Pomcentridae memilki jumlah spesies tertinggi di kedua musim (11 dan 10 spesies) menggundakan sensus visual. Dapat disimpulkan bahwa kedua metode tersebut dapat menjadi pendekatan dalam monitoring struktur atau kelimpahan ikan terumbu karang berdasarkan musim. 

scholarly journals SUITABILITY OF CORAL REEF ECOSYSTEM CONDITION BASED ON LOCAL ECOLOGY KNOWLEDGE WITH SURVEY METHOD IN EAST COAST OF WEH ISLAND

2017 ◽  
Vol 8 (2) ◽  
pp. 567
Author(s):  
Jhon Septin Maurisdo Siregar ◽  
Luky Adrianto ◽  
Hawis Madduppa
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
East Coast ◽  
Local Ecological Knowledge ◽  
Good Condition ◽  
Survey Method ◽  
Ecological Knowledge ◽  
Coral Reef Ecosystem ◽  
Reef Condition ◽  
Reef Ecosystem

<em>Local ecological knowledge (LEK) refers to the knowledge of people in a local community that can be used in assessing environmental conditions as well as reflecting the interaction that occur in an ecosystem. The purpose of this study was to examine condition of coral reef ecosystem based on the LEK’s community in a marine protected area east coast weh island (KKPD PTPW) Sabang. Assessment of the coral reef condition based on the local’s ecological knowledge is justified from the suitability of the area by comparing map of the coral reefs condition based on LEK and observation map of the coral reefs condition during the study. Based on LEK, it is known that in the PTPW Sabang region coral reefs which falls under deteriorated class is found in the northern sea of Kelurahan Kota Atas, while those which falls under good condition class are found in Ie Meule and Ujung Kareng as well as in Anoi Itam except Benteng. Result from the observations done in 13 stations found that sea region near Sumur Tiga, Ujung Kareung and Benteng have a good coral reefs with a coverage range of 51-65 %. While the sea in Ujung Seuke, Anoi Itam and Reuteuk have a moderate coral reefs with a percentage of coverage ranging from 44- 49. Respondents’ perceptions of the coral reef condition during the last 10 years which include 55% respondents in Ie Meule and 74.29% of respondend in Anoi Itam stated that there is an increment of coral reefs coverage.</em>

scholarly journals Analisis Genus dan Penyakit Karang di Perairan Pulau Tuan Kecamatan Peukan Bada Kabupaten Aceh Besar

2017 ◽  
Vol 3 (2) ◽  
pp. 107 ◽  
Author(s):  
Nadia Aldyza ◽  
Afkar ,
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Survey Method ◽  
Coral Reef Ecosystem ◽  
Coral Diseases ◽  
Growth Anomalies ◽  
White Spots ◽  
Reef Ecosystem

This study aims to determine the genus of coral and coral diseases in the coral reef ecosystem of Tuan Island Peukan Bada, Aceh Besar District. The data of coral genera were gathered by using point intercept transect method, whereas, the data of coral diseases were gathered by using survey method. The data were identified by using handbook and then analyzed descriptively. The results showed that there were 5 coral genera found in Tuan Island Pekan Bada namely: Acropora, Montipora, Pocillopora, Porites, and Goniastrea. Meanwhile, coral diseases that are found in Tuan Island were ulcerative white spots, growth anomalies of an unknown cause, sediment damage, alga overgrowth, pink line disease dan pigmentation responses. The conclusion of this study were (1) the coral reefs that were found in Tuan Island Peukan Bada, Aceh Besar District consisted of 5 genera, and (2) coral diseases in Tuan Island consisted of 6 types of diseases.

scholarly journals DISTRIBUSI KARANG DAN IKAN KARANG DI KAWASAN REEF BALL TELUK BUYAT KABUPATEN MINAHASA TENGGARA

2012 ◽  
Vol 8 (1) ◽  
pp. 28 ◽  
Author(s):  
Indri Manembu ◽  
Luky Adrianto ◽  
Dietriech G Bengen ◽  
Ferdinan Yulianda
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Economic Value ◽  
Coastal Communities ◽  
Coral Reef Ecosystem ◽  
Goods And Services ◽  
Bay Area ◽  
The Family ◽  
Surrounding Areas ◽  
Reef Ecosystem

Penempatan reef ball di perairan Teluk Buyat dan sekitarnya telah dilakukan pada tahun 1999 oleh PT. Newmont Minahasa Raya. Tujuan penempatan reef ball untuk membangun habitat berbagai biota yang berasosiasi dengan karang sehingga dapat meningkatkan populasi ikan ekonomis penting. Kehadiran ikan karang pada reef ball sangat penting secara ekologis dan ekonomis. Penurunan kualitas terumbu berarti hilangnya nilai ekonomi barang dan jasa, serta hilangnya jaminan makanan dan pekerjaan untuk masyarakat pesisir, yang umumnya hidup dalam kemiskinan. Secara keseluruan, komposisi spesies ikan yang ditemukan di reef ball terdiri dari 19 famili, 34 genus, 50 spesies dan 290 individu, yang tertinggi dihuni oleh jenis dari famili Mullidae. Seiring dengan bertambahnya waktu dan usia reef ball, beberapa spesies terlihat sudah menetap seperti Lutjanus kasmira, dan beberapa spesies dari famili Acanthuridae. Keberadaan reef ball membantu terbentuknya ekosistem terumbu karang yang baru dan meningkatkan kesuburan perairan, sehingga lebih meningkatkan keberadaan komposisi ikan karang, yang pada akhirnya meningkatkan pendapatan nelayan dari hasil tangkapan ikan karang.Kata kunci: Reef ball, karang batu, ikan karang Distribution of Coral Reefs and Fish in Buyat Bay Area Reef Ball Southeast Minahasa Regency The placement of reef ball in Buyat Bay and surrounding areas have been carried out since 1999 by PT. Newmont Minahasa Raya. The goal of this placement was to build a habitat for many biota associated with reef thus may improve economically important fish populations. The presence of reef fish on the reef ball is indispensable ecologically and economically. Furthermore, the degradation of reefs might cause the disappearance of economic value of goods and services, as well as the disappearance of food security and employment for coastal communities, who generally live in poverty. Overall, the composition of fish species found in the reef ball consists of 19 families, 34 genera, 50 species and 290 individuals, the highest inhabited by species of the family Mullidae. As time went by and the increase of reef ball age, some species seem have settled down such as Lutjanus kasmira, and several species of the Acanthuridae family. In addition, the presence of reef ball helps the formation of a new coral reef ecosystem and increase the fertility of waters, therefore enhancing the presence of reef fish composition, which might increases the income of fishermen. Keywords: Reef ball, coral reef, reef fish  

scholarly journals Enhancing reef fish diversity using artificial reef-building: A case study of coral reef rehabilitation on Nyamuk Island, Anambas Islands

2021 ◽  
Vol 944 (1) ◽  
pp. 012030
Author(s):  
B Prabowo ◽  
N Rikardi ◽  
M A Setiawan ◽  
P Santoso ◽  
Yonvitner ◽  
...  
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Diversity Index ◽  
Artificial Reef ◽  
Fish Diversity ◽  
Underwater Visual Census ◽  
Target Fish ◽  
Reef Fish Species ◽  
Fish Group

Abstract CCMRS-IPB conducted coral reef rehabilitation at damaged coral reefs around Nyamuk Island. Those artificial reef buildings for rehabilitation gave shelter spaces for reef fish. This research aims to calculate the effect of coral reef-building, which enhances rugosity to the reef fish diversity around the rehabilitation sites. The study was conducted on Nyamuk Island in the Anambas Islands. Reef fish were sampled annually from 2014 to 2019 using the underwater visual census. The Diversity index and non-Metric Multidimensional Scaling were built to discover reef fish diversity, and reef fish species were affected the most. Yearly data shows an escalation number of reef fish abundance and richness at the end of 2019. The major reef fish group is found to have constant diversity throughout the year compared to other functional groups. The target reef fish group came to this rehabilitation ecosystem primarily attracted by nourishment availability. There is a shift in the reef fish diversity from the early year to the project end. Generally, major reef fish groups will be refuged first around the rehabilitation sites, especially territorial types. Target fish groups from herbivorous and carnivorous types will mostly come along after their food availability and location to get around.

scholarly journals Komposisi Spesies Ikan Karang Di Perairan Desa Bunutan, Kecamatan Abang, Kabupaten Karangasem, Bali

2017 ◽  
Vol 3 (1) ◽  
pp. 91
Author(s):  
I Gusti Ngurah Agung Dhananjaya ◽  
I Gede Hendrawan ◽  
Elok Faiqoh
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Species Composition ◽  
Reef Fish ◽  
Coral Cover ◽  
Good Condition ◽  
Breeding Grounds ◽  
Target Fish ◽  
Marine Site ◽  
Hard Coral Cover

Bunutan village is located in the Abang Subdistrict, Karangasem Regency, Bali. Marines of Bunutan has a coral reef coverage and reef fish under the water. This study aims to determine the species composition of reef fish in marine of Bunutan. The methods used to take reef fish data is Visual Census along 50 meters transect parallel a coastline at a depth of ±5 meters. Result of this study shows thats abudance of reef fish is about 1513 individual from 68 species and 18 family all around transect. The highest abudance derived from Pomacentridae Family with a total 1055 individual from 22 species founded. The composition of species in Bunutan marine site generally in a good condition with high diversity H’ = 3,188418, uniformity is fairly stable with value E = 0,753032 and with the value of dominance C = 0,069245 or nothing of coral reef fish which dominate each other. In terms of role fish in the sea, reef fish in Bunutan marine site have major fish about 92%, target fish 2% and indicator fish 6%. When relating to the condition of coral reefs in the marines of Bunutan, hard coral cover percentage is on 48.5% to 54.5% thats indicates the condition of coral reefs on moderate to good condition. The condition of coral reefs is utilized by reef fish as a place of refuge, feeding or breeding grounds, causing the species composition of reef fish in the marine of Bunutan on relatively good.

scholarly journals KESESUAIAN EKOSISTEM TERUMBU KARANG UNTUK KEGIATAN WISATA SELAM DI NUSA LEMBONGAN, BALI

2021 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Made Ayu Pratiwi ◽  
Ni Made Ernawati ◽  
Ni Putu Putri Wijayanti
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Reef Fish ◽  
Human Activities ◽  
Economic Benefits ◽  
Coral Community ◽  
Observation Point ◽  
Coral Reef Ecosystem ◽  
Suitability Index ◽  
Reef Ecosystem

Nusa Lembongan islands, Bali have a potential of coral reef diversity. Coral reefs have both ecological and high economic potential so that they are widely used. The economic benefits of coral reefs make these ecosystems very vulnerable to pressure from human activities. One of these human activities is the use of coral reefs in diving tourism activities. This research aimed to determine suitability and carrying capacity of coral reef ecosystem on Nusa Lembongan Island so that it can be recommended to manage coral reef ecosystem strategies to support the use of diving tourism. This study was conducted on six dive sites as observation points Observations on coral reef ecosystems were carried out using the intercept transect (LIT) method, and reef fish observation was carried out using the fish visual census method. Water quality sampling will be done in situ. Diving suitability was carried out by estimating the tourist suitability index (IKW) of six parameters, namely the brightness of the waters, coral community cover, coral life form, reef fish species, coral reef depth and current. The tourism suitability index value for the diving tourism category obtained was 74.07% (Jack Mangrove); 57.41% (Crystal Bay); and 61.11% (Manta Bay). The value for each observation point is included in the appropriate category of 50% -75%. It can be interpreted, that all observation points which are dive sites in Nusa Lembongan have supported diving tourism activities.Keywords: Tourism Suitability Index; Diving; Nusa lembongan.

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