Complementarity of Rotating Video and Underwater Visual Census for Assessing Species Richness, Frequency and Density of Reef Fish on Coral Reef Slopes

Damage to coral reef ecosystems is a major problem on the islands of Gili Air and Gili Trawangan. This will have an impact on the presence of reef fish in the area. This study aims to look how much relation caused by associated between live coral cover and reef fish in Gili Air and Gili Trawangan island.. This research method using Line Intersept Transect (LIT), Underwater Visual Census and simple linear regression analysis to know the relation. The percentage of coral cover on Gili Air Island and Gili Trawangan Island on reef flats (1-5 m) is 11.75% and 11.67% respectively, on the reef slopes (6-10 m) the percentage is 50.4% and 48.9%. In addition we observed the existence of 11 families reef fish. The abundance of reef fish on Gili Air and Gili Trawangan islands on reefs flat with an average of 0,406 ind / m2 and 0,137 ind / m2, on the reef slope on average - respectively 0,434 ind / m2 and 0,274 ind / m2. The determinant value in Southern part of both island indicates a value close to +1 and in Northern part of both island indicates a value close to -1.

Download Full-text

The influence of natural cycles on coral reef fish movement: implications for underwater visual census (UVC) surveys

Coral Reefs ◽

10.1007/s00338-013-1075-4 ◽

2013 ◽

Vol 32 (4) ◽

pp. 1135-1140 ◽

Cited By ~ 6

Author(s):

J. P. Bijoux ◽

L. Dagorn ◽

J.-C. Gaertner ◽

P. D. Cowley ◽

J. Robinson

Keyword(s):

Coral Reef ◽

Reef Fish ◽

Coral Reef Fish ◽

Fish Movement ◽

Visual Census ◽

Underwater Visual Census ◽

Natural Cycles

Download Full-text

Coral Reef Fish and Plankton Diversity toward Coral Reef Coverage in Panjang Island of Anak Krakatoa Mountain

Jurnal Ilmiah Biologi dan Keanekaragaman Hayati ◽

10.23960/jbekh.v6i1.31 ◽

2019 ◽

Vol 6 (1) ◽

pp. 45-49

Author(s):

Gita Puspitasari ◽

Endang Linirin Widiastuti ◽

Henni Wijayanti ◽

Tugiyono Tugiyono

Keyword(s):

Coral Reef ◽

Reef Fish ◽

Coral Reef Fish ◽

Marine Ecosystem ◽

Visual Census ◽

Underwater Visual Census ◽

Plankton Diversity ◽

Relationship Of ◽

The Relationship ◽

Line Intercept

The coral reef is part of the marine ecosystem that important because of its role as a source of life, especially for marine variety creatures. This study aims to determine the relationship of the diversity of reef fish and plankton to coral reef cover on the Panjang Island of Anak Krakatoa Mount, Lampung. Line Intercept Transect used for retrieval of coral reef data and the Underwater Visual Census method for collecting coral reef fish data. Diversity and dominance index are utilized to analyze correlations between them. A good coral reef is obtained at point 2 (5 meters in depth) while at other points the condition of the coral reef is classified as moderate. The highest number of fish is found at point 1 (5 meters in depth) with 56 individuals. The highest plankton diversity is 3.04 Index whereas located at point 2 (0 meters in depth). They have a positive correlation (0.955-coral reef coverage with fishes, 0.916-diversity of reef fish and coral reefs, 0.833-diversity of reef fish with plankton) upon their relationship.

Download Full-text

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

Jurnal Kelautan Tropis ◽

10.14710/jkt.v24i3.11810 ◽

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.

Download Full-text

KELIMPAHAN, KEANEKARAGAMAN DAN BIOMASSA IKAN KARANG PADA PERAIRAN UJONG PANCU, KABUPATEN ACEH BESAR

JURNAL PERIKANAN TROPIS ◽

10.35308/jpt.v7i2.2397 ◽

2020 ◽

Vol 7 (2) ◽

pp. 134

Author(s):

M Rizki Fazillah ◽

Taisir Afrian ◽

Nanda Muhammad Razi ◽

Maria Ulfah Ulfah ◽

Samsul Bahri

Keyword(s):

Coral Reef ◽

Species Diversity ◽

Reef Fish ◽

Visual Census ◽

Underwater Visual Census ◽

Location Data ◽

A Value ◽

Result Show ◽

Coral Reef Ecosystems ◽

Average Biomass

Reef fish utilize coral reef ecosystems as a place to live, foraging, spawning and nurturing. This study aims to determine the abundance of species, diversity and biomass of reef fish found in the waters of Ujong Pancu, Aceh Besar district. This research was conducted in October 2017, there were 5 research location. Data was collected using the Underwater Visual Census (UVC) method. The result show that the highest abundance of reef fish was found in waters of Lhok Mata Ie with a value of 5311.71 Ind/ ha. While the lowest abundance of reef fish was found in Tuan Island waters with a value of 896.67 Ind/ ha. Overall diversity of Ujong Pancu waters reefs is included in the medium-high category. The highest average biomass of reef fish is found in the water of East Batee Island with a value of 100.69 Kg/ ha. While the lowest average biomass of reef fish is found in the waters of West Batee Island with a biomass value 23.87 Kg/ ha. Keywords : Abundance, biomass, diversity, reef fish, Ujong Pancu

Download Full-text

POTENSI IKAN KARANG DI PERAIRAN PESISIR NEGERI HUKURILA, KECAMATAN LEITIMUR SELATAN KOTA AMBON

TRITON : Jurnal Manajemen Sumberdaya Perairan ◽

10.30598/tritonvol15issue2page46-57 ◽

2019 ◽

Vol 15 (2) ◽

pp. 46-57

Author(s):

Dicky Sahetapy ◽

Debby Selanno ◽

Novianty Tuhumury

Keyword(s):

Species Richness ◽

Coral Reef ◽

Species Diversity ◽

Reef Fish ◽

Standing Stock ◽

Stable Condition ◽

Underwater Visual Census ◽

Species Dominance ◽

Reef Fish Species ◽

High Species Richness

The Study was conducted on April to May 2019 in the coastal waters of Hukurila village, Leitimur Selatan District of Ambon city with the aims to analyzed taxon composition, species diversity, density, standing stock, potency of target species and status of reef fish. Reef fish data were collected at four reef stations using UVC method. The result showed that there were 192 species of reef fish inhabit coral reef of Hukurila village. Pomacentridae, Labridae and Chaetodontidae have high species richness, while other seven families have low species richness. Relative diversity of reef fish in the study area can be classified in poor to moderate category, and the estimated number of species of reef fish was 369 species. Species diversity of reef fish is high, with low species dominance in the community and species evenness of reef fish in their community is in stable condition. Density of reef fish between reef station ranged of 2.9-4.0 ind. m-2. Furthermore, the standing stock of reef fish ranged of 28,840-40,400 ind.ha-1 and biomass of target reef fish species ranged of 1.67-5.14 (± 3.53) tons ha-1 of coral reefs. Status of reef fish in the coral reef of Hukurila village belong to high category. ABSTRAK Penelitian dilakukan dari April sampai Mei 2019 di perairan pesisir Negeri Hukurila, Kecamatan Leitimur Selatan Kota Ambon dengan tujuan menganalisis komposisi taksa, diversitas spesies, densitas, sediaan cadang, potensi ikan karang spesies target dan status ikan karang. Data ikan karang dikumpulkan dari 4 stasiun dengan metode underwater visual census (UVC). Ditemukan 192 spesies ikan karang Menempati terumbu karang Hukurila. Famili Pomacentridae, Labridae, Chaetodontidae memiliki kekayaan spesies tinggi, sementara tujuh famili memiliki kekayaan spesies rendah. Diversitas relatif ikan karang di areal studi termasuk kategori miskin hingga moderat, dan diestimasi jumlah spesies ikan karang pada habitat terumbu Negeri Hukurila sebanyak 369 spesies. Diversitas spesies ikan karang tinggi, dengan dominansi spesies rendah dalam komunitas dan keserasian spesies ikan karang dalam kondisi Stabil. Densitas ikan karang antara stasiun terumbu berkisar antara 2.9 - 4.0 ind/m2. Sediaan cadang ikan karang antara stasiun terumbu berkisar antara 28.840 - 40.400 ind/ha dan potensi spesies target berkisar 1,67-5,14 (± 3,53) ton/ha terumbu karang. Kondisi ikan karang di terumbu Negeri Hukurila termasuk kategori tinggi. Kata kunci: Ikan karang, keanekaragaman spesies, kepadatan, sediaan cadang, potensi

Download Full-text

KONDISI IKAN KARANG FAMILI CHAETODONTIDAE DI DAERAH PERLINDUNGAN LAUT DESA BAHOI KECAMATAN LIKUPANG BARAT KABUPATEN MINAHASA UTARA

JURNAL ILMIAH PLATAX ◽

10.35800/jip.2.3.2014.9121 ◽

2015 ◽

Vol 2 (3) ◽

pp. 92

Author(s):

Jacqline Laikun ◽

Ari B Rondonuwu ◽

Unstain N.W.J. Rembet

Keyword(s):

Spatial Distribution ◽

Coral Reef ◽

Coral Reefs ◽

Protected Areas ◽

Reef Fish ◽

Marine Protected Areas ◽

Visual Census ◽

Fish Family ◽

Marine Life ◽

Reef Condition

The coral reefs are a sundry of marine life. Which one is reef fish in family Chaetodontidae. This fish is indicator of the coral reef condition. The aim from the research is : discover of spatial distribution of the reef fish family Chaetodontidae and find out of the intercourse of reef fish family Chaetodontidae with the coral reef presence based on growth of coral form. The research was do in the coral reef at Marine Protected Areas in Bahoi Village District of West Likupang North Minahasa Regency, on Tuesday, December 23rd, 2014. The research is using to do the surveying method. The data is collecting distribution of the fish Chaetodontidae (amount from species and individuals to using by technic visual census). The total of reef fish family Chaetodontidae those found in Marina Protected Areas in Bahoi Village is about 20 species, with total of the individuals at a depth of 3 meters and 10 meters is (56,66 and 57,33 individuals/150m2). Keywords : Coral reefs, Chaetodontidae, Bahoi ABSTRAK Terumbu karang merupakan tempat berbagai macam biota laut. Salah satu Ikan karang adalah ikan famili Chaetodontidae. Ikan ini merupakan ikan indikator terumbu karang. Tujuan dari penelitian ini : mengetahui kelimpahan dari ikan karang famili Chaetodontidae. Penelitian ini dilakukan di Daerah Perlindungan Laut Desa Bahoi Kecamatan Likupang Barat Kabupaten Minahasa Utara, pada hari selasa, tanggal 23 Desember 2014. Penelitian ini menggunakan metode survey. Data yang dikumpulkan adalah kelimpahan ikan Chaetodontidae (Jumlah spesies dan individu dengan menggunakan teknik sensus visual). Jumlah ikan karang famili Chaetodontidae yang di temukan di Daerah Perlindungan Laut Desa Bahoi berjumlah 20 spesies, dengan jumlah individu pada kedalaman 3 meter dan 10 meter berjumlah (56,66 individu/150m2 dan 57,33/150m2 individu). Kata kunci : Terumbu karang, Chaetodontidae, Bahoi 1Bagian dari skripsi 2Mahasiswa Program Studi Manajemen Sumberdaya Perairan FPIK-UNSRAT 3Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi

Download Full-text

HUBUNGAN ANTARA KOMPOSISI IKAN TARGET DAN PRESENTASE TUTUPAN KARANG HIDUP DI KEPULAUAN KEI KECIL, MALUKU

Jurnal Penelitian Perikanan Indonesia ◽

10.15578/jppi.26.3.2020.147-157 ◽

2020 ◽

Vol 26 (3) ◽

pp. 147

Author(s):

Ana Faricha ◽

Isa Nagib Edrus ◽

Rizkie Satriya Utama ◽

Ahmad R. Dzumalex ◽

Abdullah Salatalohi ◽

...

Keyword(s):

Coral Reef ◽

Reef Fishes ◽

Average Density ◽

Species Variation ◽

Live Coral ◽

Visual Census ◽

Underwater Visual Census ◽

Ecological Values ◽

Average Biomass ◽

The Relationship

Ikan terumbu karang memiliki peranan penting baik secara ekonomi maupun ekologi, namun kondisi terumbu karang termasuk di perairan Indonesia yang menjadi habitat utama ikan karang mengalami degradasi. Penelitian ikan karang sudah banyak dilakukan, namun di Indonesia kondisi habitat ikan karang memiliki karakter yang berbeda-beda. Tujuan penelitian ini adalah untuk mengetahui hubungan antara komposisi ikan karang target dan tutupan karang hidup. Penelitian ini dilakukan pada bulan Oktober 2019 di Kepulauan Kei Kecil, Maluku. Metode yang digunakan adalah UVC (Underwater Visual Census) untuk data ikan karang dan UPT (Underwater Photo Transect) untuk mengkaji tutupan karang hidup. Hasil pengamatan menunjukkan bahwa terdapat 130 spesies ikan karang target yang mewakili 19 famili, dengan variasi jenis ikan target antar lokasi pengamatan berkisar antara 25-66 spesies. Kepadatan rata-rata ikan karang target sebesar 8.811 ± 4.107 Ind/ha, dan biomassa rata-rata 1.335 ± 899 Kg/ha. Komposisi ikan karang target yang memiliki kedekatan dengan tutupan karang hidup yaitu famili Siganidae, Serranidae, Lutjanidae, Holocentridae, dan Pomacentridae. Akan tetapi hubungan tersebut rendah, dan kemungkinan besar ada faktor lain yang mempengaruhi. Reef fishes have an important economic and ecological values. However, the coral reef of the globe including in the most of the Indonesian waters which is the vital habitat for reef fishes is degraded. Study on the reef fishes is an abundance, while the habitat characteristic of reef fishes in Indonesian waters has a differences. The aim of this study is to determine the relationship between the target reef fishes compositions and the percentage live coral covers. This study was carried out in October 2019 at the Kei Kecil islands, Maluku. The method used in this study is UVC (Underwater Visual Census) for collecting the reef fishes data, and the UPT (Underwater Photo Transect) for assessing the live coral coverage. The result shows that there are about 130 fishes, which representing 19 families, with species variation ranges from 25 to 66 species among the observation sites. The average density of target fishes was about 8.811 ± 4.107 Ind/ha, whereas the average biomass of target fishes was 1,335 ± 899 Kg/ha. The target reef fishes compositions that has relation with live coral covers is family Siganidae, Serranidae, Lutjanidae, Holocentridae, and Pomacentridae. However, this relationship is weak, and may influenced by other factors.

Download Full-text

Comparison of visual census and high definition video transects for monitoring coral reef fish assemblages

Fisheries Research ◽

10.1016/j.fishres.2010.10.011 ◽

2011 ◽

Vol 107 (1-3) ◽

pp. 84-93 ◽

Cited By ~ 56

Author(s):

Dominique Pelletier ◽

Kévin Leleu ◽

Gérard Mou-Tham ◽

Nicolas Guillemot ◽

Pascale Chabanet

Keyword(s):

Coral Reef ◽

Reef Fish ◽

Coral Reef Fish ◽

Fish Assemblages ◽

High Definition ◽

Visual Census ◽

High Definition Video

Download Full-text

Tutupan karang dan komposisi ikan karang didalam dan luar kawasan konservasi pesisir timur Pulau Weh, Sabang

DEPIK ◽

10.13170/depik.3.2.1468 ◽

2014 ◽

Vol 3 (2) ◽

Cited By ~ 1

Author(s):

Riany Hastuty ◽

Yonvitner . ◽

Luky Adrianto

Keyword(s):

Protected Areas ◽

Reef Fish ◽

Marine Protected Areas ◽

Conservation Areas ◽

Visual Census ◽

Marine Protect Area ◽

Underwater Visual Census ◽

Protect Area ◽

Reef Fish Species ◽

Composition Point

Abstract. The study was conducted onApril to October 2013 in marine protected areas of Weh Island. The samplings were done at10 siteswhere 6 sitesare situatedinside of conservation areas, while 4 sites are situated outside of conservation areas. The purpose ofthis study was to evaluate coral covers andreef fish composition. Point intersept transect(PIT), underwater visual census (UVC) and fish catches were used to examine coral covers, abudance and biomass of reef fish. The results showed that average of coral covers, abudance and biomass of target fishes inside conservation were 54%, 1,662 ind/ha and 408.78 kh/ha, respectively, while than outside conservation was 33.05%, 1,058 ind/ha and 307.77 kg/ha, respectively. Total of reef fish species and the catch were increased from previous years, for example there are 60 species in 2010 and it was increased to 83 species in 2013. In addition the fishermen catches were increased slightly from 3.03 kg/trip in 2008 to 3.6 kg/trip in 2013. It is concluded that the coral condition and reef fish composition in the conservation are much better compared to outside of conservation areas.Keywords : Marine protect area; reef fish; Weh Island Abstrak. Penelitian ini dilakukan pada April sampai Oktober 2013 di Kawasan Konservasi Perairan Pesisir Timur Pulau Weh yang terdiri dari 10 stasiun dimana 6 stasiun berada didalam kawasan konservasi dan 4 stasiun diluar kawasan konservasi.Penelitian ini bertujuan untuk menilai persentase tutupan karang dan komposisi ikan karang. Sampling menggunakan transek titik dan underwater visual sensus (UVC) dan hasil tangkapan.Hasil penelitian menunjukkan bahwa rata-rata kondisi tutupan karang, kelimpahan dan biomassa ikan target dikawasan konservasi yaitu 54%, 1.662 ind/ha dan 408,78 kg/ha, secara berurutan, sedangkan diluar kawasan konservasi adalah 33,05%, 1.058 ind/ha dan 307,77 kg/ha biomassa ikan target.Jumlah jenis ikan karang di kawasan konservasi meningkat, yaitu 60 jenis tahun 2010 menjadi 83 jenis pada tahun 2013 dan rata-rata hasil tangkapan tahun 2008 yaitu 3,03 kg/trip dan tahun 2013 yaitu 3,6 kg/trip. Dapat disimpulkan bahwa kondisi karang dan komposisi jenis dan ukuran ikan lebih baik di dalam kawasan konservasi berbanding diluar kawasan.Kata kunci: Kawasan Konservasi; Ikan karang; Pulau Weh

Download Full-text