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Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Published by Universitas Syiah Kuala
ISSN : 20897790     EISSN : 25026194     DOI : 10.13170/depik
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan is a peer review international journal, this journal is publishing high-quality articles in aquatic sciences and fisheries in general. The aim of the journal is to publish and disseminate the current or new findings of the research, and give a significant contribution to the development of fisheries and aquatic sciences in several topics, but not limited to: Fisheries (Aquaculture, Capture Fisheries, Fish Processing) Aquatic Ecology (Freshwater, Marine, and Brackishwater) Aquatic Biology (Fish, Mollusk, Crustacean, Plankton, Coral reefs) Oceanography.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 563 Documents
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Struktur komunitas Echinodermata pada ekosistem lamun Desa Taula’a Kecamatan Bilato, Kabupaten Gorontalo Hardiyanti Yusuf; Miftahul Khair Kadim
Depik Vol 8, No 3 (2019): December 2019
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.8.3.14288

Abstract

Abstract. Echinodermata is playing an important role in food chains in waters ecosystem; however, there was no report on the Echinodermata structure in the seagrass ecosystem of Taula’a village, Gorontalo district. Hence, the objective of the study was to  to determine the community structure of Echinoderms in the seagrass ecosystem of coastal area of Taula’a village, Bilato, Gorontalo regency. The research was conducted from January to April 2019. There were 3 observation stations chosen purposively. The sample of Echinoderms was observed at low tide using methods of quadrats and transects of 1×1 m. In addition, the water parameters were also measured i.e the temperature, the salinity, the pH, the water depth, the substrate and the water flow. Furthermore, diversity, dominanc and Evenness index were analyzed using software PAST 3.22. The results showed that there were 13 species of Echinoderms representing 4 classes, namely Ophiuroidea, Asteriodea, Echinodea dan Holothuroidea in which the highest total abundance was on 1st station and the lowest total abundance was on the 2nd station.  The index of diversity was in the medium category, the index of domination was in the low category, the index of evenness showed an equitable distribution and the index of uniformity was very high.Keywords : Echinoderms, community, seagrass, Past 3.22 Abstrak. Echinodermata memiliki peranan penting dalam rantai makanan pada ekosistem laut, namun demikian struktur komunitasnya di ekosistim lamun Desa Taula’a Kabupaten Gorontalo belum pernah dilaporkan. Oleh karena itu peneilitan ini bertujuan  untuk mengetahui struktur komunitas Echinodermata pada ekosistem lamun di wilayah pesisir Desa Taula’a, Bilato Kabupaten Gorontalo. Penelitian dilaksanakan pada bulan Januari hingga April 2019. Terdapat 3 stasiun pengamatan yang dipilih secara purposive. Pengamatan sampel Echinodermata dilakukan pada saat surut dengan menggunakan transek kuadran 1×1 m. Selain itu dilakukan juga pengukuran terhadap parameter air yaitu suhu, salinitas, pH, kedalaman, substrat dan arus. Nilai indeks keanekaragaman, indeks dominansi dan indeks kemerataan dianalisis menggunakan software PAST 3.22. Hasil penelitian menunjukkan sebanyak 13 spesies Echinodermata ditemukan yang mewakili 4 kelas yaitu Ophiuroidea, Asteriodea, Echinodea dan Holothuroidea dimana kelimpahan total tertinggi pada stasiun I dan terendah pada stasiun II.  Indeks keanekaragaman kategori sedang, indeks dominasi rendah, indeks kemerataan menunjukkan penyebaran yang merata dan indeks keseragaman yang sangat tinggi. Kata kunci: Echinodermata, komunitas, Lamun, Past 3.22
Kondisi terumbu karang dan makro invertebrata di Perairan Ujong Pancu, Kecamatan Peukan Bada, Aceh Besar Samsul Bahri; Edi Rudi; Irma Dewiyanti
Depik Vol 4, No 1 (2015): APRIL 2015
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.1.1.2278

Abstract

Abstract. The aimof this study was to evaluate the condition of coral reefs and macro invertebrates at Ujong Pancu, Aceh Besar District The study was carried out from April to May 152012. Coral coverage was observed by using Point Intercept Trancect method and Visual census technique for macro invertebrates. There was 50% of hard coral coverage recorded in three observation locations. The predominant genus was Acropora with a percentage of  more than 50% at all locations. The abundance of macro invertebrateswas ranged from 3.75 to 7.75 ind/transect. The most abundant macro invertebrates was Diadema setosum with percentage of more than 40% at each location. The diversity index (H’) of coral reefs and macro invertebrates were ranged from 0.74 - 1.36 and 0.98 – 1.5, respectively. In general, the condition of coral reefs and macro invertebrates in Ujong Pancu was in good condition. Keywords: Coral reefs; Macro invertebrates; Ujong Pancu. Abstrak. Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang dan makro invertebrata di Ujong Pancu. Penelitian ini dilakukan pada bulan April hingga Mei 2012. Tutupan karang diamati dengan menggunakan Metode Point Intercept Transect (PIT) dan makro invertebrata diamati dengan menggunakan metode TeknikVisual Sensus. Hasil penelitian ditemukan bahwa lebih dari 50% tutupan karang keras pada ketiga stasiun pengamatan. Genus yang paling mendominasi pada ketiga stasiun adalah Acropora dengan persentase lebih dari 20% pada setiap stasiun pengamatan. Kelimpahan makro avertebrata berkisar antara 3,75 hingga 7,75 ind/transek. Kelimpahan makro invertebrata terbesar adalah Diadema setosum dengan persentase lebih dari 40% pada setiap stasiun pengamatan. Indeks keanekaragaman (H’) karang dan makro investebrata berkisar antara  0,74 - 1.36 dan 0,98 – 1,5 secara berurutan. Secara umum berdasarkan indeks yang digunakan, kondisi terumbu karang dan makro invertebrata di Ujong Pancu tergolong baik.Kata kunci : Terumbu Karang; Makro avertebrata; Ujong Pancu.
Keragaman ikan karang di perairan Pulau Makian Provinsi Maluku Utara Najamuddin N; Samar Ishak; Adityawan Ahmad
Depik Vol 1, No 2 (2012): August 2012
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.1.2.49

Abstract

Abstract. The objective of the present study was to identify and evaluate reef fish community structure at Makian Island. Sampling was conducted in two stations at coordinate position of 00º.22’15.75”N -127 º.25’12.00”E to 00 º.22’7.90”N - 127º. 25’17.40”E with two different depths i.e. 5 meters and 10 meters. Coral reef data were collected using line intercept transect method, while the reef fish data were taken using a census visual method. A total of 138 species of coral reef fishes were recorded during the survey belong to 47 genera and 21 families. The fish diversity on station 1 for both depths (5 meters and 10 meters) were a medium level, while on station 2 at 5 meters water depth was also a medium category, but a higher diversity was detected at 10 meters depth. The percentage coral covers on station 1 at 5 meters depth was a medium level, at 10 meters depth was classified as high covered, while on station 2 at 5 meters and 10 meters depth were classified very high percent covers.Key word. Diversity, coral, percent covers, and line intercept transect
Manipulation of the aquatic physical environment and its relationship with ectoparasitic infection in dumbo catfish (Clarias sp) Suratno, Suratno; Suryono, Suryono; Naswir, Muhammad
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.33182

Abstract

Fish disease is an obstacle in the cultivation of Dumbo catfish (Clarias sp.) which can result in fish death. The need for information on how to prevent and treat fish diseases is very necessary. This study aims to determine the effect of aeration duration on water quality, ectoparasite intensity, prevalence, dominance, survival and condition factors, then correlate water quality with ectoparasite intensity. This study used a Complete Randomized Design (CRD) with five treatments and four replications. Treatment includes aeration 0 hours/day, 6 hours/day, 12 hours/day, 18 hours/day and 24 hours/day. Data analysis using ANOVA of a certain level of significance. If there is a noticeable difference from each treatment, proceed to the DUNCAN test. Test the correlation of water quality with ectoparasite intensity. The result of this study is that long aeration can increase oxygen solubility, acidity but reduce ammonia and nitrite. The correlation value of oxygen solubility in ectoparasite intensity is 0.828, acidity (pH) is 0.849, ammonia is -0.888, nitrite is -0.592. The prevalence value of P0 and P1 is 0%, P2 is 89%, P3 and P4 is 100%. The intensity of ectoparasites in Dumbo catfish (Clarias sp.), at P0 is 2, P1 is 13, P2 is 75, while at P3 and P4 is 100. The dominance of ectoparasites that infect is Trichodina sp. by 71.7-100% and Dactylogyrus sp. by 0-28.4%. The survival rate of fish at P0 was highest with a value of 89%, P1 at 84%, P2 at 71%, P3 and P4 rates at 0%. The value of the condition factor then P0 and P1 have a value of 1, P2, P3 and P4 have a condition factor value of 1. It is concluded that the longer aeration is given, the solubility of oxygen increases which results in an increase in the intensity and prevalence of ectoparasite infections, the pH of the water becomes neutral and decreases the content of ammonia and nitrite. There is a moderate to very strong correlation between water quality and ectoparasite intensity. There is an increase in the prevalence of infection, ectoparasite intensity and fish mortality so that it can reduce the survival and condition factors of Dumbo catfish (Clarias sp.).Keywords:AerationInfectionEctoparasitesClarias sp
Analysis of heavy metal content and microbiological quality of fish and giant prawns chatch in Percut Watershed, Percut Sei Tuan District, Province of North Sumatra Zulaika Haddis Nasution; Elisa Julianti; Dwi Suryanto
Depik Vol 11, No 2 (2022): August 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.2.25277

Abstract

The purpose of this research was to determine the content of heavy metals and microbiological quality, and compare to the requirements of the quality standard values according to SNI 2729:2013 and SNI 2705:2014, as well as to determine the value of the Bioaccumulation Factor (BAF) and the maximum consumption limit of fish and giant prawns heavy metal-concentrated. This researh used survey and random sampling methods, i.e  taking research samples (tilapia, broom fish, and giant prawns) at 3 (three) observation stations, including Station 1 Amplas, Station 2 Denai, and Station 3 Percut. Heavy metal content (Pb and Cd) and microbiological quality (E.coli and Salmonella, sp) were analysed. Data analysis was done by inference and calculated using Microsoft office Excel (Microsoft Inc., USA) descriptively. The results showed that all samples in each observation did not meet the quality standard value requirements according to SNI 2729:2013 and SNI 2705:2014. The average heavy metal content of Lead (Pb) was 0,3 mg/kg in tilapia and broom fish, and 0,5 mg/kg in giant prawns. The content of heavy metal Cadmium (Cd), were 0,1 mg/kg in tilapia and broom fish, and 0,5 mg/kg in giant prawns. All samples also showed positive in containing E.coli and Salmonella, sp. The value of Bioaccumulation Factor (BAF) of heavy metals (Pb and Cd) in all samples was 1, meaning that the sample's ability to accumulate heavy metals (Pb and Cd) was high. The maximum limit for consumption of concentrated samples of heavy metals in tilapia was 0,196 kg/week, broom fish was 0,221 kg/week, and giant prawns was 0,203 kg/week.
Komposisi biota dasar hasil tangkapan alat garok pada perairan pesisir Kronjo, Tangerang Yonvitner Yonvitner; Rokhmin Dahuri; Isdradjad Setyobudi Andi; Mennofatria Boer
Depik Vol 9, No 3 (2020): December 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.9.3.13509

Abstract

Garok is a fishing gear that operates at the bottom or surface of the substrate that is caught of various benthic species. The garok gear that operates in sediment, even in the long term can cause changes in the composition of the biota. Because exploitative fishing proses, can cause damage, vulnerability and at the long-term impact to the sustainability of the population. The research was carried out in Kronjo Bay, Tangerang from March to May 2011. The samples were collected from the operation, then determined the species, quantity, and weight of each species. Descriptive statistical analysis and ANOVA were used to determine the significance of the composition between stations and observation times. The caught consist of Placuna placenta, Anadara, Murex, Tellina, and crustaceans which belong to the mollusk and crustacean groups. Statistical analysis did not show a significant difference between the research stations, but it was significantly based on the observation time with Fhit 3,1 and Ftab 1,7. It turned out that the abundance of basic biota was found to be high in April then decreased in May. Likewise, the abundance did not show a significant difference in the location and time of observation. The catch composition on the Kronjo coast is dominated by the gastropod group with an average composition of above 50% per operation.Keywords:GarokCompositionDemersalKronjoCoastalABSTRAKGarok adalah alat tangkap yang dioperasikan di dasar perairan yang menangkap berbagai jenis biota dasar.  Alat garok yang dioperasikan dapat menangkap beragam jenis biota dasar dan dalam jangka lama dapat menyebabkan terjadinya perubahan komposisi biota. Alat tangkap yang bersifat eksploitatif dapat menyebabkan kerusakan, kerentanan sehingga menganggu keberlanjutan populasi secara jangka panjang. Penelitian dari praktek penggunaan alat garok ini dilakukan di Teluk Kronjo Tangerang mulai Maret-Mei tahun 2011. Sampel dikumpulkan secara eskploratif dari operasi alat garok, kemudian tentukan jenis, jumlah dan bobotnya dari setiap jenis.  Analisis statistik deskriptif dan ANOVA digunakan untuk mengetahui perbedaan komposisi antar stasiun dan antara waktu pengamatan.  Hasil tangkapan terdiri dari jenis Placuna placenta, Anadara, Murex, Tellina, dan krustasea yang termasuk kelompok moluska dan krustasea. Analisis statistik tidak menunjukan perbedaan yang nyata antara stasiun penelitian, namun berbeda nyata berdasarkan waktu pengamatan dengan Fhit 3,1 dan Ftab 1,7. Kelimpahan biota dasar ditemukan tinggi pada bulan April kemudian menurun pada bulan Mei.  Begitu juga kelimpahan tidak menunjukan perbedaan yang nyata pada lokasi dan waktu pengamatan. Komposisi tangkapan di pesisir Kronjo didominasi oleh kelompok gastropoda dengan komposisi rata-rata diatas 50% setiap kali operasi.Kata kunci:GarokKomposisiDemersalKronjoPesisir
Pola kemunculan ikan nike (Gobiidae) di Perairan Teluk Gorontalo, Indonesia Nuralim Pasisingi; Suprapty Abdullah
Depik Vol 7, No 2 (2018): August 2018
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.7.2.11442

Abstract

Nike fish is one of the fish species found in Gorontalo known to belong to the Gobiidae group. Nike is fishing intensively by local fishermen without considered sustainability aspect. Unfortunately, the comprehensive scientific data for the management purposes of nike fish was not yet available. Therefore, this study aims to assess the period of occurrence of nike fish in the Gorontalo Bay as the initiation of providing scientific information that supports sustainable management goal. Sampling was conducted from March to June 2018 using fish net. The results showed that the period of occurrence of nike fish every month starting from the bay area and move toward the estuary. The emergence of nike fish that began in the eastern part of Gorontalo Bay occurred in March, April, and May 2018. While the appearance of nike fish that started from the western area of the bay occurred in June and July 2018. It was concluded that the duration of occurrence of nike fish in the Gorontalo Bay occurs for 3 to 9 days at the end of the lunar phase.Nike merupakan salah satu spesies ikan yang ditemukan di Perairan Gorontalo yang dikenal berasal dari kelompok gobiidae. Kegiatan eksploitasi ikan nike oleh nelayan belum mempertimbangkan aspek kelestariannya di perairan berpotensi mengancam keberlanjutannya di perairan. Data ilmiah dan komprehensif yang dapat dijadikan acuan pengelolaan ikan nike belum tersedia. Oleh karena itu, penelitian ini bertujuan untuk memetakan periode kemunculan ikan nike di perairan Teluk Gorontalo sebagai inisiasi penyediaan informasi ilmiah yang mendukung arah pengelolaan yang berkelanjutan. Pengambilan sampel ikan di Perairan Teluk Gorontalo dilakukan pada Bulan Maret sampai Juni 2018 dengan menggunakan jaring ikan. Hasil penelitian menunjukkan bahwa periode kemunculan ikan nike setiap bulan dimulai dari area teluk dan begerak ke arah muara. Kemunculan ikan nike yang dimulai di perairan Teluk Gorontalo bagian timur terjadi pada bulan Maret, April, dan Mei 2018. Sedangkan kemunculan ikan nike yang dimulai dari area barat teluk terjadi pada bulan Juni dan Juli 2018. Secara keseluruhan, durasi kemunculan ikan nike di perairan Teluk Gorontalo terjadi selama 3 sampai 9 hari di fase bulan akhir menjelang bulan baru.
Karakteristik pH dan pengaruhnya terhadap bakteri Coliform di perairan Selat Madura Kabupaten Pamekasan Eva Ari Wahyuni
Depik Vol 6, No 3 (2017): December 2017
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.6.3.5875

Abstract

The objective of present study was to analyze the condition of environmental parameters, especially pH and its relationship to coliform survival rate which is useful to understand the status of the aquatic environment in Pamekasan District. There are three sampling locations with three depth profiles and determine using purposive sampling method. Environmental parameters are measured on surface profiles, including DO, temperature, pH, and salinity. Seawater samples were cultured on agar medium and selective media, then analyzed using colony counting method to calculate the number of bacteria in each depth profile. The results showed the DO range of 5.4 to 5.6 mg/L, the temperature 31.1-32.20C, pH 7.4-8.0, and the salinity 31-32‰, and the number of coliform bacteria ranged 15-85 (Colony x 10 CFU/mL) found on the surface and bottom of stations 2 and 3. The pH fluctuations during the study were higher than 2012 and 2013. The pattern of coliform bacteria distribution showed lower with increasing depth. Differences in the pH range are thought to be one of the factors that affect the survival rate of coliform bacteria, so that also affect the density of coliform bacteria. In general, it can be concluded that environmental conditions in good status based on environmental parameter indicators are relatively normal for tropical regions. The pH range is quite wide with a tendency to increase in value (indicating more alkaline) during the study period. Changes in pH have an effect on the survival rate with a higher tendency to decrease in acidic conditionsPenelitian ini bertujuan untuk menganalisis kondisi parameter lingkungan, khususnya pH dan keterkaitan terhadap perkembangbiakan (survival rate) bakteri coliform yang berguna untuk mengetahui status lingkungan perairan di Kabupaten Pamekasan. Lokasi pengambilan sampel air laut dilakukan pada tiga stasiun dengan tiga profil kedalaman menggunakan metode purposive sampling. Parameter lingkungan diukur pada profil permukaan, meliputi DO, suhu, pH, dan salinitas. Sampel air laut dibiakkan pada media agar dan media selektif, kemudian dianalisa menggunakan metode colony counting untuk menghitung jumlah bakteri pada setiap profil kedalaman. Hasil analisa menunjukkan kisaran DO 5,4-5,6 mg/L, suhu 31,1-32,20C, pH 7,4–8,0, dan salinitas 31-32 ‰, dan jumlah bakteri coliform berkisar 15-85 (koloni x 10 cfu/mL) yang ditemukan pada profil permukaan dan dasar pada stasiun 2 dan 3. Fluktuasi pH selama penelitian lebih tinggi dibandingkan penelitian tahun 2012 dan 2013. Pola sebaran bakteri coliform menunjukkan semakin rendah dengan bertambahnya kedalaman. Perbedaan kisaran pH diduga menjadi salah satu faktor yang berpengaruh terhadap survival rate bakteri coliform, sehingga berpengaruh juga terhadap kepadatan bakteri coliform. Secara umum dapat disimpulkan bahwa kondisi lingkungan dalam status baik berdasarkan indikator parameter lingkungan relatif normal untuk wilayah tropis. Kisaran pH cukup lebar dengan kecenderungan semakin bertambah besar nilainya (menunjukkan semakin basa) selama periode penelitian. Perubahan pH berpengaruh terhadap survival rate dengan kecenderungan lebih tinggi penurunannya pada kondisi asam
Kinerja Pelabuhan Perikanan Nusantara (Ppn) Karangantu - Banten, Indonesia Agus Suherman; Herry Boesono; Faik Kurohman; Abdul Kohar Muzakir
Depik Vol 9, No 2 (2020): August 2020
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.9.2.17457

Abstract

Karangantu Nusantara Fishing Port (NFP) accommodates production, processing and marketing activities, also fishermen development. Services for vessels as production facilities include: providing a home base for the fishing fleet, ensuring smooth loading of captured fishes, providing supplies for vessels such as fresh water, fuel, ice and others. This study aims to analyze the activities and operational performance and find out the determinants of the performance of Karangantu NFP. This research was conducted in October 2019 to January 2020 at the Karangantu NFP. Data analysis was performed using two methods; the first is a descriptive method to analyze the operational activities of the Karangantu NFP and assess operational performance based on the Decree of Director General of Capture Fisheries in 2015 Number 20 / KEP-DJPT / 2015; the second is Structural Equation Model (SEM) method, which is to define the determinants of Karangantu NFP performance. The results showed that Karangantu NFP operational activities continued to increase. Ship visits during 2019 increased by 15.75%. The production volume of landed fish increased by 9.0%, but the value of production fell by 7.1% due to the catches of most fish with low economic value and poor fish quality. The performance evaluation of 27 criterias based on the Decree of Director General of Capture Fisheries in 2015 showed that the operational performance of the Karangantu NFP during October 2019-January 2020 performed well. Based on SEM test results, internal (human resource/personal, budget, fishermen, and productivity) variables have the most influence on NFP performance. Keywords: Performance, SEM, Fishing Port, Capture Fisheries, KarangantuABSTRAKPelabuhan Perikanan Nusantara (PPN) Karangantu menampung aktivitas produksi, pengolahan dan pemasaran, serta pembinaan nelayan. Pelayanan terhadap kapal perikanan sebagai sarana produksi meliputi: penyediaan basis bagi armada penangkapan, menjamin kelancaran bongkar ikan hasil tangkapan, menyediakan suplai logistik bagi kapal-kapal ikan seperti air tawar, bahan bakar minyak, es untuk perbekalan dan lain-lain. Penelitian ini bertujuan untuk menganalisis aktivitas dan kinerja operasional serta mengetahui faktor-faktor penentu kinerja PPN Karangantu. Penelitian ini dilaksanakan pada Oktober 2019 hingga Januari 2020 di PPN Karangantu. Analisis data dilakukan dengan dua metode; pertama metode deskriptif yaitu untuk menganalisis aktivitas operasional PPN Karangantu dan penilaian kinerja operasional berpedoman Keputusan Direktur Jenderal Perikanan Tangkap tahun 2015 Nomor 20/KEP-DJPT/ 2015; kedua metode Structural Equation Model (SEM) yaitu untuk mengetahui faktor-faktor penentu kinerja PPN Karangantu. Hasil penelitian menunjukkan bahwa aktivitas operasional PPN Karangantu terus mengalami peningkatan. Kunjungan kapal selama tahun 2019 mengalami kenaikan sebesar 15,75%. Volume produksi ikan yang didaratkan naik sebesar 9,0 %, namun untuk nilai produksi turun sebesar 7,1 % disebabkan  hasil tangkapan sebagian besar ikan yang nilai ekonomis rendah dan mutu ikan kurang baik. Penilaian kinerja terhadap 27 kriteria berpedoman keputusan Direktur Jenderal Perikanan Tangkap tahun 2015 menunjukkan bahwa kinerja operasional PPN Karangantu selama Oktober 2019- Januari 2020 berkinerja Baik. Berdasarkan hasil pengujian SEM,  variabel internal (sumberdaya manusia/pengelola, anggaran, nelayan dan produktivitas) mempunyai pengaruh paling besar terhadap kinerja PPN.Kata kunci: Kinerja, SEM, Pelabuhan Perikanan, Perikanan Tangkap, Karangantu
Estimasi jumlah biomassa lamun di Pulau Pramuka, Karya dan Kotok Besar, Kepulauan Seribu, Jakarta Yayan Mardiansyah Assuyuti; Alfan Farhan Rijaluddin; Firdaus Ramadhan; Reza Bayu Zikrillah
Depik Vol 5, No 2 (2016): August 2016
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.5.2.4914

Abstract

Abstract. The research was conducted in Kotok Besar, Karya and Pramuka Islands, Seribu Islands, Jakarta Province from May to July 2013. The aims of the research were to examine the percent cover, composition of vegetation and estimation of seagrass leaves biomass. The squares transect (0.25 m2) was utilized to calculate the seagrass percent cover data. Seagrass data were converted to total cover and biomass formula to estimate the seagrass leaves biomass. The result of our study showed there are 4 species of seagrass occurred in Kotok Besar Island, while 6 species were recorded in Karya and Pramuka Islands. Cymodocea rotundata had the higher value of seagrass cover percentage in Kotok Besar, Karya and Pramuka Islands, while the lower values were Halodule uninervis and Halophila ovalis.  In addition, the highest value of seagrass leaves biomass from those islands is Enhalus acoroides and the lower value was Halophila ovalis inKotok Besar and Pramuka Islands, and Halodule uninervis in Karya Island.Keywords: Composition of vegetation, estimated of biomass, seagrass, Seribu Islands  Abstrak.  Penelitian ini dilakukan di Pulau Kotok Besar, Karya dan Pramuka Kepulauan Seribu-Provinsi Jakarta mulai Mei sampai Juli 2013. Tujuan dari penelitian ini adalah mengetahui komposisi vegetasi lamun dan estimasi jumlah biomassa daun lamun di pulau Kotok Besar, Karya dan Pramuka kepulauan Seribu-Provinsi Jakarta. Penelitian ini dilakukan dengan mengguakan transek kuadrat (0,25 m2) untuk mengetahui persentase penutupan lamun. Data lamun yang diperoleh dikonversikan pada persamaan total penutupan dan estimasi biomasa untuk mengestimasi biomassa daun lamun. Hasil dari penelitian, terdapat 4 jenis lamun yang diperoleh di pulau Kotok Besar dan 6 jenis di pulau Karya dan Pramuka. Persen penutupan tertinggi pada pulau Kotok Besar, Karya dan Pramuka adalah jenis lamun Cymodocea rotundata, sedangkan yang terendah dari masing-masing pulau adalah Halodule uninervis dan Halophila ovalis secara berurutan. Estimasi biomassa daun lamun dengan nilai tertinggi adalah Enhalus acoroides dari ketiga pulau dan terendah adalah Halophila ovalis untuk pulau Kotok Besar dan Pramuka, dan Halodule uninervis untuk pulau Karya.Kata kunci: Komposisi vegetasi, estimasi biomassa, lamun, Kepulauan Seribu

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