Garuda - Garba Rujukan Digital

Kontaminasi Logam Pb (Timbal) pada Anadara granosa di Pantai Utara Kabupaten Cirebon Meitha Permata Sari; Indah Riyantini; Yudi Nurul Ihsan
Buletin Oseanografi Marina Vol 11, No 3 (2022): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v11i3.38451

Laut dan pesisir Kabupaten Cirebon banyak dimanfaatkan untuk pertambakan, penggunaan lahan mangrove, penangkapan ikan, dan budidaya perairan. Meningkatnya aktivitas domestik, rumah tangga, dan industri memberikan dampak negatif bagi perairan laut yakni pencemaran. Pencemaran yang terjadi salah satunya ialah pencemaran logam Pb terhadap Anadara granosa atau kerang dara. Anadara granosa merupakan hewan bentik dan filter feeder dimana akumulasi logam Pb lebih besar dibandingkan dengan biota laut lain, hal tersebut perlu diperhatikan mengingat kerang dara diminati oleh masyarakat untuk dikonsumsi. Tujuan penelitian ini ialah mendapatkan kadar logam Pb pada substrat, air laut, dan Anadara granosa yang diambil dari Kecamatan Gunung Jati, Kabupaten Cirebon sebagai wilayah penangkapan ikan. Metode yang digunakan ialah metode survey dan penentuan stasiun penelitian menggunakan metode purposive sampling. Pada setiap stasiun dilakukan pengambilan sampel substrat, air laut, dan Anadara granosa untuk diketahui kadar logam Pb. Penentuan kadar logam Pb pada sampel dilakukan di Laboratorium Sentral Universitas Padjajaran Jatinangor, Sumedang, Jawa Barat merujuk pada pedoman SNI 066992.3-2004 menggunakan instrumen Spektrofotometer Serapan Atom. Hasil penelitian menunjukkan rata-rata kadar logam Pb substrat sebesar 19,53 mg/l, air laut sebesar 0,16 mg/l, Anadara granosa sebesar 1,07 mg/kg.Â The sea and coast of the Cirebon Regency are widely used for aquaculture, mangrove land use, fishing, and aquaculture. Increasing domestic, household and industrial activities harm marine waters, namely pollution. One of the pollutions that occur is the contamination of Pb metal against Anadara granosa or virgin shells. The hyena shells are benthic animals and filter feeders where the accumulation of Pb metal is greater than that of another marine biota, it is necessary to pay attention to this, considering that the hymen is in demand by the public for consumption. The purpose of this study was to obtain Pb levels in the substrate, seawater, and virgin clams. The method used is a survey method and the determination of the research station using a purposive sampling method. At each station, substrate, seawater, and virgin shellfish were sampled to determine the Pb metal content. Determination of Pb metal content in the sample using an Atomic Absorption Spectrophotometer. The results showed that the average Pb content of the substrate was 19.53 mg/l, seawater was 0.16 mg/l, and virgin clams were 1.07 mg/kg.

The Distribution of heavy metals in Jakarta and Semarang bay during the period of 2016 - 2019 Yudi Nurul Ihsan; Phobe Nadine Alfa Zefa; Kalysta Fellatami; Mega Laksmini Syamsuddin; Sheila Zallesa
Depik Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Coastal areas have an important role and have high natural resources that can be utilized for human life. Over time, the increase in population is directly proportional to the activities and utilization of coastal areas, which puts great pressure on coastal areas. One of the pressures that occur in coastal areas is heavy pollution. This research aims to see the distribution of heavy metals especially Cd, Cu and Pb in the coastal areas of Jakarta Bay and Semarang Bay and to see the differences in heavy metal content from the two gulfs. The data used in this study is secondary data, which consists of data on heavy metals, current velocity, pH and water temperature. The period of data used in this research are from 2016 to 2019, The method used in this study is the GIS method with descriptive analysis. The comparison of concentrations from two bays shows a higher mean of concentration value of heavy metals cadmium (Cd) in Semarang Bay (2016, 2017, 2019) and heavy metals of copper (Cu) in Jakarta Bay (2016 and 2018). Meanwhile, the concentration value of heavy metal lead (Pb) was higher in Jakarta Bay (2016, 2017, 2018), yet in 2019, the two locations have the same concentration value of heavy metal lead (Pb). Keywords:Coastal areaDistributionHeavy metalsJakarta BaySemarang Bay

The Distribution of heavy metals in Jakarta and Semarang bay during the period of 2016 - 2019 Yudi Nurul Ihsan; Phobe Nadine Alfa Zefa; Kalysta Fellatami; Mega Laksmini Syamsuddin; Sheila Zallesa
Depik Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.1.23015

Coastal areas have an important role and have high natural resources that can be utilized for human life. Over time, the increase in population is directly proportional to the activities and utilization of coastal areas, which puts great pressure on coastal areas. One of the pressures that occur in coastal areas is heavy pollution. This research aims to see the distribution of heavy metals especially Cd, Cu and Pb in the coastal areas of Jakarta Bay and Semarang Bay and to see the differences in heavy metal content from the two gulfs. The data used in this study is secondary data, which consists of data on heavy metals, current velocity, pH and water temperature. The period of data used in this research are from 2016 to 2019, The method used in this study is the GIS method with descriptive analysis. The comparison of concentrations from two bays shows a higher mean of concentration value of heavy metals cadmium (Cd) in Semarang Bay (2016, 2017, 2019) and heavy metals of copper (Cu) in Jakarta Bay (2016 and 2018). Meanwhile, the concentration value of heavy metal lead (Pb) was higher in Jakarta Bay (2016, 2017, 2018), yet in 2019, the two locations have the same concentration value of heavy metal lead (Pb). Keywords:Coastal areaDistributionHeavy metalsJakarta BaySemarang Bay

The Distribution of heavy metals in Jakarta and Semarang bay during the period of 2016 - 2019 Yudi Nurul Ihsan; Phobe Nadine Alfa Zefa; Kalysta Fellatami; Mega Laksmini Syamsuddin; Sheila Zallesa
Depik Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.1.23015

Coastal areas have an important role and have high natural resources that can be utilized for human life. Over time, the increase in population is directly proportional to the activities and utilization of coastal areas, which puts great pressure on coastal areas. One of the pressures that occur in coastal areas is heavy pollution. This research aims to see the distribution of heavy metals especially Cd, Cu and Pb in the coastal areas of Jakarta Bay and Semarang Bay and to see the differences in heavy metal content from the two gulfs. The data used in this study is secondary data, which consists of data on heavy metals, current velocity, pH and water temperature. The period of data used in this research are from 2016 to 2019, The method used in this study is the GIS method with descriptive analysis. The comparison of concentrations from two bays shows a higher mean of concentration value of heavy metals cadmium (Cd) in Semarang Bay (2016, 2017, 2019) and heavy metals of copper (Cu) in Jakarta Bay (2016 and 2018). Meanwhile, the concentration value of heavy metal lead (Pb) was higher in Jakarta Bay (2016, 2017, 2018), yet in 2019, the two locations have the same concentration value of heavy metal lead (Pb). Keywords:Coastal areaDistributionHeavy metalsJakarta BaySemarang Bay

The Optimization of Sulphide Oxidizing Bacteria (SOB) for Oil Corrosivity Reduction at Indramayu Coast, The Northern Coastal Area of West Java Yudi Nurul Ihsan; Kalysta Fellatami; Rega Permana; Jiang Mingguo; Tri Dewi Kusumaningrum Pribadi
Jurnal Ilmiah Perikanan dan Kelautan Vol. 14 No. 2 (2022): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v14i2.33462

Highlight Research First NR-SOB from Indramayu coast was successfully isolated and identified. Bactrerial characterization morphologically and biochemically, foster with in situ hybridization confirm the isolate was Thiobacillus denitrificans, and Arcobacter sp. Both isolate, Thiobacillus denitrificans and Arcobacter sp., were able to grow in sulphide rich environment in the presence of essential nutrient Thiobacillus denitrificans and Arcobacter sp. exhibit an outstanding sulphide oxidation ability up to 100% in the presence of nitrate. Abstract Crude oil production triggers the formation of hydrogen sulphide, also known as souring, which is extremely toxic and corrosive to the environment. It additionally give an adverse consequence to aquatic, terrestrial, and human existence. Studies of hydrogen sulphide reduction in sediments polluted by crude oil have been carried out recently to investigate the capability of indigenous Nitrate-Reducing Sulphide Oxidising Bacteria, hereinafter referred to as NR-SOB, as bioremediation agents. The experiments utilised hydrogen sulphide with 200 µM concentration combined with NO3 with different concentrations of 100 µM, 200 µM, and 300 µM. Measurements of the hydrogen sulfide concentrations were observed up to 48 hours within the experimental period. The SOB used in this study were taken from Balongan Bay at Indramayu coast using Nansen bottle to carry out water sample. The sulphide-oxidising ability of SOB was then evaluated at room temperature in control environment. Methylene blue method was applied to monitor the sulphide concentration. The results showed a complete removal of hydrogen sulphide concentrations in 48 hours accompanied with gradual drops of nitrate in all experiment series. Sulphide oxidation rate was detected to appear between 6.8 and 10.2 fmol/cell/hour. Measurements of cell abundance after 48 hours showed 6.2 x 105, 7.5 X 105, and 8.2 X 105 cell/ml from Experiments I, II, and III respectively. Using MSS selective medium, the bacteria were identified as Thiobacillus denitrificans and Arcobacter sp. Overall, the isolated NR-SOB from the coast of Balongan Bay, Indramayu proves to be a promising candidate for sulphide controls and mitigation.

Bioremediation using microbial fuel cell for polluted marine sediment Pribadi, Tri Dewi Kusumaningrum; Rosada, Keukeu Kaniawati; Ihsan, Yudi Nurul; Rossiana, Nia
Biogenesis: Jurnal Ilmiah Biologi Vol 11 No 2 (2023)
Publisher : Department of Biology, Faculty of Sci and Tech, Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/bio.v11i2.38765

.

Sustainability of Social, Economic, and Institutional Aspects on Fisheries Management: Case Study at Palabuhanratu Nusantara Fishing Port, West Java Agustian, Dita; Megantara, Erri Noviar; Ihsan, Yudi Nurul; Cahyandito, Martha Fani
ECSOFiM (Economic and Social of Fisheries and Marine Journal) Vol 11, No 1 (2023): ECSOFiM October 2023
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.ecsofim.2023.011.01.02

Social, economic, and institutional aspects are crucial for supporting sustainable fisheries management. The objective of this research is to assess the level of sustainability of the social, economic, and institutional aspects of fisheries management, especially at the fishing port level. In this research, field research was conducted using composite analysis and flag modelling visualization in the Ecosystem Approach to Fisheries Management (EAFM) as a tool to assess the sustainability of each aspect. Data were obtained from interviews and questionnaires answered by 90 respondents, including fishermen, port officers, and fisheries entrepreneurs in the Palabuhanratu Nusantara Fishing Port. The results showed that, overall, the sustainability condition in the social aspect was good with a score of 79.69, while the economic aspect was moderate with a score of 55.32, and the institutional aspect was good with a score of 80.28. The lowest levels of sustainability in the social and economic aspects were found in the indicators of stakeholder participation and fishery household income, both in the medium category. In the institutional aspect, the lowest level of sustainability was found in the indicator of compliance with responsible fisheries management principles, which was in the good category. These results are expected to provide stakeholders with the necessary information to take corrective steps to improve sustainability in fisheries management, particularly in the social and economic aspects.

Numerical Model of Current Speed in Bojong Salawe Beach, Pangandaran West Java Province Subiyanto, Subiyanto; Nirwa, Nira na; Yuniarti, Yuniarti; Ihsan, Yudi Nurul; Afrianto, Eddy; Supian, Sudradjat
International Journal of Global Operations Research Vol. 2 No. 1 (2021): International Journal of Global Operations Research (IJGOR), February 2021
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v2i1.40

The purpose of this study was to determine the hydrodynamic conditions at Bojong Salawe beach. The method used in this research is a quantitative method, where numerical data is collected to support the formation of numerical models such as wind, bathymetry, and tide data. The hydrodynamic model will be made using Mike 21 with the Flow Model FM module to determine the current movement pattern based on the data used. In the west monsoon with a maximum instantaneous speed of 0.04 - 0.08 m/s, while in the east monsoon it moves with a maximum instantaneous speed of 0,4 â€“ 0,44 m/s. The dominant direction of current movement tends to the northeast. The results indicate the current speed during the east monsoon is higher than the west monsoon. The difference in the current speed is also influenced by the tide conditions; higher during high tide and lower during low tide. Monsoons also have a role in the current movements, though the effect is not very significant.

Oyster Mussels (Crassostrea gigas) Analys Financial Feasibility (Case Study in Seishin Company) in Hyogo, Japan Herman, Adam; Ihsan, Yudi Nurul; Maulina, Ine
Al-Kharaj: Journal of Islamic Economic and Business Vol. 7 No. 3 (2025): : All articles in this issue include authors from 3 countries of origin (Indone
Publisher : LP2M IAIN Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24256/kharaj.v7i3.7716

Japan is known as one of the largest oyster cultivitation in the world. This research aims to analyze the financial feasibility of prospects of cultivitation oyster in Sakoshi, Hyogo prefecture, Japan. The analysis of investment evalution criteria in this study based on financial analysis methods which include, investments cost, operasional costs, Revenue Cost Ratio(R/C) and Break Even Point (BEP). To analyza financial feasibility, investment assessment criteria are used including Net Present Value (NPV), Internal Rate Return (IRR), Net Benefit Cost Ratio (Net B/C) and Payback Period (PP). Based on data analysis, it was obtained that the R/C value was 2.154 and Break Even Point was 3.421 kg. In the calculation of financial feasibility analysis, NPV value was obtained at ¥ 96,788,973, IRR value of 83%, Net B/C value of 2.154 and the Paypack Period for 1.17 years. Base from results of this research, oyster cultivation in Sakoshi, Hoyogo Prefecture, Japan is very feasible and profitable to do and develop in the future.

ESTIMASI PRODUKTIVITAS PRIMER FITOPLANKTON DI KAWASAN HUTAN MANGROVE BATUKARAS PANGANDARAN, PROVINSI JAWA BARAT Nurdiana, Ramdan; Kusumaningrum Pribadi, Tri Dewi; Ihsan, Yudi Nurul
JFMR (Journal of Fisheries and Marine Research) Vol. 4 No. 2 (2020): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2020.004.02.11

Hutan mangrove merupakan salah satu sumber daya alam yang memiliki fungsi sosial, ekonomi, dan ekologi bagi lingkungan sekitar. Layanan ekosistem mangrove melalui pendekatan produktivitas perairan menjadi salah satu indikator untuk melihat fungsi habitat dan ekologinya. Kajian eksplorasi ini bertujuan untuk menentukan tingkat produktivitas perairan dan korelasinya dengan faktor-faktor lingkungan. Pengukuran produktivitas perairan yang diukur secara musiman dilakukan selama satu tahun. Sampel air diperoleh dari 3 titik sampling yang terbagi menjadi tiga zona (perairan tawar, mangrove, estuari) dengan masing â€“ masing 3 kali pengulangan. Pengukuran produktivitas primerd dilakukan dengan metode oksigen gelap terang. Secara kontras dapat diketahui ahwa nilai produktivitas perairan tertinggi terdapat pada daerah estuari di kedua musim (> 1000 mgC.m-3). Walaupun tidak terdapat korelasi yang signifikan antara produktvitas primer dengan parameter lingkungan, perubahan yang terjadi antara musim memberikan informasi terhadap pengaruh masing-masing parameter.

Title

Found 37 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 37 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 37 Documents
Search