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Posisi komponen GPP terhadap variasi konstituen harmonik pasang surut bulan Muharram di Stasiun Sabang Salnuddin Salnuddin; Nurhalis Wahidin; Jefry Bemba
Depik Vol 7, No 1 (2018): April 2018
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.7.1.7570

Abstract

The movement of celestial bodies produces a variation of a gravitational gradient as a tidal generation force (GPP). Position Sabang Station, declination maximum and position lunar month of Muharram aka n generate harmonic constituent character identifier of GPP, where the water level is the sum of the amplitude of harmonic constituent that generated at a certain time.This research is to determine the variation of harmonic constituents and identify the character of harmonic constituents of GPP component position characterization in Muharram month. The results show Katrakteristik tidal movement beginning of the month of Muharram in Sabang Station occurred 1-2 hours after ijtimak.. Value riding dominant water derived from the value of Mean Sea Level ( 52%), and the dominant contribution hamonik constituents derived from component M 2 (28 - 33%). Harmonic constituents M 2 does not show the position of the moon in Muharram, while the position of the sun is reflected in the constituent phase harmonic S 2..
Pengaruh Pergerakan Pasang Surut terhadap Perubahan Kualitas Air Sumur Gali Masyarakat di Pesisir Kelurahan Fitu – Kota Ternate Selatan Salnuddin Salnuddin; Jefry Bemba; Zulhan Arifin Harahap; Muhammad Faisal Kader; Nurhalis Wahidin; Kusdi Hi Ichsan; Imran Taeran
Jurnal Ilmu Lingkungan Vol 22, No 3 (2024): May 2024
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.22.3.781-792

Abstract

Air merupakan salah satu elemen penting yang menyokong keberlangsungan hidup manusia tak terkecuali masyarakat pesisir Kelurahan Fitu- Kota Ternate Selatan yang berada di wilayah pulau kecil dan gunung api. Sumber air bersih masyarakat pesisir umumnya bersumber dari sumur gali dan memiliki potensi dicemarkan oleh berbagai macam faktor terutama intrusi air laut.  Penelitian bertujuan untuk mendeterminasi pengaruh pergerakan pasang surut terhadap perubahan kualitas sumur gali dalam upaya determinasi karakteristik dan parameter penciri instrusi air tanah di pulau kecil gunung api. Pengumpulan data dilakukan melalui pengukuran dan observasi dengan bantuan instrument survei sedangakan analisis data menggunakan persamaan umum matematik serta analisis statistik regresi linear sederhana dengan 3 pendekatan analisis berdasarkan input data yang diberikan. Hasil analisis Berdasarkan hasil analisis menunjukkan bahwa pendekatan analisis III lebih informatif dalam mendeterminasi pola hubungan pergerakan pasang surut dan perubahan kualitas air tanah di sumur gali masyarakat. Kecenderungan hubungan tersebut lebih konsisiten berdasarkan nilai “b” (koefisien korelasi) yang mengkuti pergerakan pasang surut terhadap masing-masing parameter kualitas air.  Pergerakan pasang surut berpotensi mempengaruhi kualitas air tanah pada sumur gali masyarakat terutama untuk parameter DHL dan salinitas pada sumur sampel 1 (R2 > 50%) dan juga pada sumur sampel 2 (R2 = 14 % dan 62 %) saat ABP Nilai koefisien determinasi (R2) menunjukkan bahwa masih banyak faktor lain yang mempengaruhi perubahan kualitas air pada sumur sampel selain oleh pergerakan pasang surut.
Kelimpahan Vibrio spp. di Perairan Pesisir Kabupaten Halmahera Barat Tamrin Tamrin; Joshian Nicolas William Schaduw; Haryani Sambali; Adnan Sjaltout Wantasen; Desy Maria Helena Mantiri; Rene Charles Kepel; Winda Mercedes Mingkid; Ockstan Jurike Kalesaran; Nurhalis Wahidin; Muhammad Aris; Taufiq Abdullah
Juvenil Vol 5, No 3: Agustus (2024)
Publisher : Department of Marine and Fisheries, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/juvenil.v5i3.23996

Abstract

ABSTRAKVibrio spp. adalah bakteri gram negatif yang biasa ditemukan di lingkungan estuari, pesisir, dan laut. Vibrio spp. merupakan patogen utama bagi kesehatan manusia dan organisme akuatik. Memahami kelimpahan Vibrio spp. sangat penting untuk dilakukan mengingat resiko terhadap kesehatan manusia, potensi kerusakan lingkungan serta ekonomi. Penelitian ini bertujuan mengeksplorasi kelimpahan Vibrio spp. di perairan pesisir Kabupaten Halmahera Barat. Terdapat sembilan kawasan pengamatan, yaitu Toniku, Tewe, Dodinga, Tuada, Porniti, Payo, Bobo, Sahu, dan Ibu. Sampel air dari bagian permukaan perairan sebanyak 100 ml dimasukan ke dalam botol steril. Pengamatan kelimpahan Vibrio spp. dilakukan dengan metode total plate count (TPC) pada media agar thiosulfate citrate bile salt sucrose (TCBS) yang diinkubasi selama 24 jam pada suhu 28°C. Hasil penelitian ini mengungkapkan Vibrio spp. pada perairan pesisir Kabupaten Halmahera Barat terdapat dalam 2 kelompok koloni, yaitu koloni hijau dengan kelimpahan 1,80 x 102 - 5,00 x 104 CFU/mL dan koloni kuning 2,20 x 103 - 3,08 x 105 CFU/mL. Kesimpulan penelitian ini adalah kelimpahan Vibrio spp. pada sembilan kawasan berkisar antara 102 - 105 CFU/mL.Kata kunci: Bakteri Vibrio spp., Koloni hijau, Koloni kuning, Total plate count.ABSTRACTVibrio spp. are gram-negative bacteria commonly found in estuary, coastal, and marine environments. Vibrio spp. are major pathogens to human health and aquatic organisms. Understanding the abundance of Vibrio spp. is very important given the risk to human health andpotential environmental and economic damage. This study explores the abundance of Vibrio spp. in the coastal waters of West Halmahera Regency. There were nine observation areas: namely Toniku, Tewe, Dodinga, Tuada, Porniti, Payo, Bobo, Sahu, and Ibu. Water samples from the surface waters, as much as 100 ml were put into sterile bottles. The abundance of Vibrio spp. was determined using the total plate count (TPC) method on thiosulfate citrate bile salt sucrose (TCBS) agar media, which were then incubated for 24 hours at 28°C. The results of this study revealed Vibrio spp. in coastal waters of West Halmahera Regency were found in 2 colony groups, namely green colonies with an abundance of 1.80 x 102 - 5.00 x 104 CFU/mL and yellow colonies 2.20 x 103 - 3.08 x 105 CFU/mL. The conclusion of this study is the abundance of Vibrio spp. in nine areas ranging from 102 - 105 CFU/mL.Keywords: Green colonies, Total plate count, Vibrio spp bacteria, Yellow colonies.
PEMODELAN TSUNAMI BERDASARKAN AMPLITUDO MAKSIMUM HISTORIS GEMPABUMI DI PESISIR JAILOLO SELATAN Achmad, Rahim; Taib, Suryani; Ningrum, Rohima Wahyu; Suryanto, Wiwit; Aswan, Marwis; Salam, Ramdani; Amelia, Risky Nuri; Hesti, Hesti; Wahidin, Nurhalis
JGE (Jurnal Geofisika Eksplorasi) Vol 9, No 3 (2023)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v9i3.338

Abstract

Pangkalan data paleo-tsunami Indonesia mencatat tanggal 28 Juni 1859 terjadi gempabumi kuat di Laut Maluku dengan skala intesitas (MMI) IX dan menyebabkan tsunami di Teluk Sidangoli dengan ketinggian 10 meter. Laut Maluku memiliki pengaruh yang signifikan terhadap potensi terjadinya bencana tsunami di sekitar wilayah Halmahera termasuk Jailolo Selatan. Melihat adanya potensi bencana tsunami yang besar di wilayah Jailolo Selatan, maka perlu dilakukan strategi perencanaan mitigasi bencana tsunami yakni dengan pemodelan bahaya tsunami. Pemodelan bahaya tsunami dilakukan untuk mengetahui nilai amplitudo maksimum (Run-up) gelombang tsunami dengan menggunakan perhitungan numerik dari sofware Cornell Multi-Grid Coupled Tsunami Model (COMCOT) versi 1.7, nilai jarak maksimum yang dapat ditembus oleh air pasang ke daratan pada pantai yang datar (inundasi), dan nilai sudut kemiringan lereng (slope) dari pengukuran fotogrametri udara Unmanned Aerial Vehicle (UAV). Hasil Pemetaaan bahaya tsunami menghasilkan nilai amplitudo maksimum (Run-up) setinggi 4 meter dan wilayah yang terdampak akibat gelombang tsunami berjarak (inundasi) sekitar 310 meter dari garis pantai. Nilai rata-rata sudut kemiringan lereng (slope) di pesisir Jailolo Selatan adalah 22,90 dan termasuk lereng curam. Dan slope tipe curam cenderung menyebabkan peningkatan tinggi gelombang saat tsunami mendekati pantai, sehingga gelombang dapat menjadi lebih tinggi.
Evaluation of Utilization Levels and User Satisfaction of Cold Chain and Solar Packed Facilities Fisherman Dealers Goto Fish Landing Base, Tidore Islands City Iksan, Kusdi Hi; Abd. Latif, Hamid; Wahidin, Nurhalis; Karman, Amirul; Taeran, Imran; Djamhur, Martini
Agrikan Jurnal Agribisnis Perikanan Vol. 14 No. 2 (2021): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1156.492 KB) | DOI: 10.52046/agrikan.v14i2.892

Abstract

Based on initial information from fishermen and fish buyers that the fulfillment of the needs for ice blocks and fuel oil for fishermen to go to sea at the Goto Fish Landing Base (PPI) is experiencing problems. The port has not been able to meet the demand for ice blocks and fuel oil (BBM) so fishermen have to buy from outside the port. In order to optimally serve the needs of users at PPI Goto City, Tidore Islands, it is necessary to improve cold chain facilities and SPDN supported by scientific studies on the status of facility utilization and user satisfaction levels. This study aims to analyze the level of utilization and satisfaction of cold chain facilities and SPDN users at PPI Goto, Tidore Islands City. The research was conducted at PPI Goto City, Tidore Islands, for 3 months, from February to April. Field data collection for 1 week, on March 2-9, 2021. The research uses the case study method. The results showed that the ice factory facilities could not serve the needs of fishermen because they were in a damaged condition as well as the SPDN facilities could not serve the needs of fishermen because there was no fuel supply from Pertamina. All stakeholders (masters, fishermen, and entrepreneurs who buy fish) expressed dissatisfaction with the service of ice factory facilities and SPDN, while for ABF and cold storage facilities, respondents stated that they were very satisfied.
Determination Analysis Of Coastal and Small Islands Conservation Area Jailolo Bay Using The Marxan Method Ahmad, Aditiyawan; Wahidin, Nurhalis
Agrikan Jurnal Agribisnis Perikanan Vol. 15 No. 2 (2022): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v15i2.1268

Abstract

Jailolo Bay conditions for utilization activities, in the long term can cause conflicts of use, therefore it is necessary to regulate the utilization according to its designation with a zoning approach so as to prevent conflicts that will occur. The purpose of this study is to determine the zoning of the use of Jailolo Bay as a coastal conservation area and small islands using the Marxan method. Based on the analysis of the factors that support the determination of Coastal and Small Islands Conservation Areas in the waters of Jailolo Bay, the main recommendation is Coastal Park and the alternative recommendation is Coastal Sanctuary. The area of the coastal and small islands conservation area of Jailolo Bay is 1,166.46 ha, consisting of a core zone of 23.50 ha, a utilization zone of 43.75 ha, a sustainable fisheries zone of 1,084.86 ha, and other zones of 14.35 ha.
Habitat Characteristics of Endemic Species of Walking Shark (Hemiscyllium Halmahera) for Proposed Protection Areas on Ternate Island, North Maluku Galitan, Zulfikar; Wahidin, Nurhalis; Irham, Irham
Agrikan Jurnal Agribisnis Perikanan Vol. 16 No. 2 (2023): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v16i2.1787

Abstract

The walking shark (Hemiscyllium halmahera) is one of the endemic species in North Maluku and it can be found in the waters of PulauTernate. There is less Information about walking sharks, so more research is needed about this species. Moreoverthe information related to habitat conditions and priority areas for shark protection is also limited especially on the west coast of Ternate Island, so more research is also needed for this species. This study aims to describe the characteristics of habitat distribution and identify areas for priority protection for shark species (Hemiscyllium halmahera) in the sea water of Ternate island. Related to these conditions, it is required to forma proposed priority area protection scheme using Marxan software.In a Marxan analysis conservation features and cost features are needed to make a priority area scheme. The results of the Marxan analysis indicate that 20% of scenario is very priority with an area of 66.3 ha, a scenario of 30% with an area of 65.6 ha, and a scenario of 50% with an area of 71.0 ha from the total area of 421.4 ha. Scenario 20% is the most suitable location to serve as a proposed marine protected area, especially the Halmahera walking shark so that in the future it can be expected to be a priority marine protection area that can grow optimally.
Study of the Diversity of Coral Reef Types and Conditions on Tidore Island, Tidore City Archipelago Umanahu, Zulkarnain Riswan; Wahidin, Nurhalis; Ahmad, Adityawan
Agrikan Jurnal Agribisnis Perikanan Vol. 16 No. 2 (2023): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v16i2.1888

Abstract

This study aims to determine the species diversity and condition of coral reefs on Tidore Island, Tidore Islands City. This research was conducted for two months from March to April 2023. The data collection method used was Underwater Photo Transect (UPT) conducted at five observation stations with a transect length of 20 meters. The results of research at 5 observation stations showed the value of coral reef species diversity in Tidore Island ranged from 0.33 - 1.54. The diversity category is classified as low and moderate, the diversity of coral species with moderate categories is found at station 4 with the number of species found as many as 40 species and the lowest coral species diversity at station 2 with the number of coral species is 13 species. The percentage of coral reef cover on Tidore Island ranged from 18.25 - 58.76% with poor to good categories. Coral reef cover with poor category is found in station 1 and good category is found in station 2, 3, 4 and 5.
Evaluation Feasibility of the Yellowfin Tuna Hand Line Fishery Business in Jambula District, Ternate City Saifullah, Dadang; Irham, Irham; Muksin, Darmiyati; Karman, Amirul; Wahidin, Nurhalis; Ahmad, Adityawan; Aris, Muhammad
Agrikan Jurnal Agribisnis Perikanan Vol. 17 No. 1 (2024): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v17i1.2034

Abstract

The yellowfin tuna hand line fishing business in Jambula Village, Ternate City is an activity that aims to exploit yellowfin tuna fish resources with the aim of obtaining continuous profits, therefore it is necessary to carry out scientific studies related to evaluating the feasibility of the yellowfin tuna long-line fishing business in Jambula City Village. Ternate. The aim of this research is to analyze the feasibility of the yellowfin tuna hand-line fishing business in Jambula Village, Ternate City. The research was carried out in Jambula Village, Ternate City from June to November 2003. The research method used was a survey method. Data on investment costs, fixed and variable operations, fish prices, and the average number of catches per trip were obtained through interviews with owners of yellowfin tuna hand-line fishing businesses because generally the fishermen who catch them are the business owners. Considering that the number of yellowfin tuna hand-line fishermen in Jambula Subdistrict is 30, a sample of 6 (20%) fishermen respondents was taken as a representative of yellowfin tuna hand-line fishermen in that sub-district.The results of the research show that the yellowfin tuna ulura fishing business in Jambula Village, Ternate City is worth continuing and developing, with the resulting economic feasibility indicator being an average profit of IDR. 45,208,333.33/year, average net present value Rp. 254,476,531.14, average value of net benefit cost ratio 3.83, average value of internal rate of return 77.83%, average value of break event point Rp. 205,899,999.94, and the average payback period value is 1.66 years.
Plankton Community Structure In Halmahera Barat Coastal Zone Tamrin; Joshian Nicolas William Schaduw; Haryani Sambali; Adnan Sjaltout Wantasen; Desy Maria Helena Mantiri; Rene Charles Kepel; Winda Mercedes Mingkid; Ockstan Jurike Kalesaran; Nurhalis Wahidin; Muhammad Aris
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.53407

Abstract

Research on plankton organisms in supporting aquatic resource management is very important to do. This study aims to see the structure of the plankton community in the coastal waters of West Halmahera Regency. There were 9 sampling sites, namely the waters of Toniku (TO), Tewe (TW), Dodinga (DG), Tuada (TU), Porniti (PR), Payo (PA), Bobo (BO), Sahu (SH), and Ibu (IB). Plankton observations used the Census-SRC method. The parameters observed were abundance, diversity index, uniformity index, and dominance index. The results showed that the highest phytoplankton abundance was found in the TO area, namely 1.7 x 107 cells/m3 and the lowest was 4.1 x 106 cells/m3 in the PR area. The highest phytoplankton diversity index was found in the PR area, namely 2.075 and the lowest was 1.429 in the IB area. The highest uniformity index of phytoplankton was found in the PR area, namely 0.901 and the lowest was 0.624 in the BO and DG areas. The highest phytoplankton dominance index was found in the IB area, namely 0.350 and the lowest was 0.138 in the PR area. The highest zooplankton abundance was found in the DG area at 2.0 x 106 cells/m3 and the lowest was 3.3 x 105 cells/m3 in the IB area. The highest zooplankton diversity index was found in the TU area, namely 1.981 and the lowest was 1.516 in the IB area. The highest uniformity index of zooplankton was found in the IB area, namely 0.942 and the lowest was 0.761 in the DG area. The highest zooplankton dominance index was found in the BO area, namely 0.266 and the lowest was 0.167 in the TU area. The conclusion of this study revealed that the most common type of plankton found was Bacillariophyceae. While the diversity value shows moderate diversity, the uniformity value shows a high level of uniformity, and the dominance value shows low-moderate dominance. Keywords: Diversity index; Uniformity index; Dominance index; Abundance; Plankton Abstrak Penelitian tentang organisme plankton dalam mendukung pengelolaan sumberdaya perairan sangat penting untuk dilakukan. Penelitian ini bertujuan melihat struktur komunitas plankton perairan kawasan pesisir Kabupaten Halmahera Barat. Terdapat 9 lokasi sampling, yaitu perairan Toniku (TO), Tewe (TW), Dodinga (DG), Tuada (TU), Porniti (PR), Payo (PA), Bobo (BO), Sahu (SH), dan Ibu (IB). Pengamatan plankton menggunkan metode Sensus-SRC. Parameter yang diamati adalah kelimpahan, indeks keragaman, indeks keseragaman, dan indeks dominansi. Hasil penelitian menunjukan kelimpahan fitoplankton tertinggi terdapat di kawasan TO yaitu 1,7 x 107 Sel/m3 dan terendah 4,1 x 106 Sel/m3 di kawasan PR. Indeks keragaman fitoplankton tertinggi terdapat di kawasan PR yaitu 2,075 dan terendah 1,429 di kawasan IB. Indeks keseragaman tertinggi fitoplankton terdapat di kawasan PR yaitu 0,901 dan terendah 0,624 di kawasan BO dan DG. Semetara indeks dominansi fitoplankton tertinggi terdapat di kawasan IB yaitu 0,350 dan terendah 0,138 di kawasan PR. Kelimpahan zooplankton tertinggi terdapat di kawasan DG yaitu 2,0 x 106 Sel/m3 dan terendah 3,3 x 105 Sel/m3 di kawasan IB. Indeks keragaman zooplankton tertinggi terdapat di kawasan TU yaitu 1,981 dan terendah 1,516 di kawasan IB. Indeks keseragaman tertinggi zooplankton terdapat di kawasan IB yaitu 0,942 dan terendah 0,761 di kawasan DG. Semetara indeks dominansi zooplankton tertinggi terdapat di kawasan BO yaitu 0,266 dan terendah 0,167 di kawasan TU. Kesimpulan penelitian ini mengungkapkan jenis plankton yang paling banyak ditemukan adalah Bacillariophyceae. Sementara nilai keragaman menunjukkan karagaman sedang, nilai keseragaman menunjukkan tingkat kesergaman tinggi, dan nilai dominasi menunjukkan dominansi rendah – sedang. Kata kunci: Indeks keragaman; Indeks keseragaman; Indeks dominansi; Kelimpahan; Plankton.