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All Journal HAYATI Journal of Biosciences Biospecies Farmaka Aquacoastmarine Jurnal Teknik ITS Jurnal Perikanan dan Kelautan Jurnal Farmasi Klinik Indonesia Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Pharmauho: Jurnal Farmasi, Sains, dan Kesehatan Omni-Akuatika OLDI (Oseanologi dan Limnologi di Indonesia) Indonesian Journal of Agricultural Research Pharmacology and Clinical Pharmacy Research PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat JFIOnline JURNAL FARMASI GALENIKA Jurnal Riset Kefarmasian Indonesia Journal of Electrical Engineering and Computer (JEECOM) Jurnal Agriment TIERS Information Technology Journal Journal of Artificial Intelligence and Digital Business Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan AQUACOASTMARINE: Journal of Aquatic & Fisheries Sciences Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Retensi Akiratech Gotong Royong Jurnal Farmasi Galenika Jurnal Indonesia Mengabdi
Ahmad Muhtadi
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KAJIAN MORFOMETRI DANAU PONDOK LAPAN DESA NAMAN JAHE KECAMATAN SALAPIAN KABUPATEN LANGKAT (MORPHOMETRY STUDY OF PONDOK LAPAN LAKE DESA NAMAN JAHE KECAMATAN SALAPIAN KABUPATEN LANGKAT) Muhammad Ma’rufi; Yunasfi Djayus; Ahmad Muhtadi
AQUACOASTMARINE Vol 3, No 4 (2015): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Morphometry and water quality are primary data to assessing the potential of the lake.Morphometry data of lake is need in determining the lake’s layers and also determine theability to use by people. Pondok Lapan Lake is an artificial lake which located in Langkat.The purpose of this study was to determine the morphometric of aspects Pondok Lapan Lakeand determine the capacity that might be. The research was conducted from January untilMarch 2015. Data collection were performed in this research that were depth, stream flow,and around the lake are processed using ArcView. From the results, the lake morphometricaspects of wide Pondok Lapan Lake is around 63.472,78 m², the maximum length of 548,28m, 220,23 m maximum width, circumference 2.200,83 m, maximum depth of 4.15 m, with asloping bottom waters and shape of the lake bottom surface is irregular. And the capacity ofthe Pondok Lapan Lake which can be used by the public is 153.484,43 m³ of water volume,stream flow around 12.963,456 m³/day-14.111,712 m³/day, Recidance time of water about11-12 days, the brightness of the water approximately 0,965 m – 1,056 m with a depth ofcompensation approximately 2,612 - 2,858 mKeywords : Pondok Lapan Lake, lake morphometry, lake capacity
Struktur Komunitas Plankton di Danau Pondok Lapan Desa Naman Jahe Kecamatan Salapian Kabupaten Langkat (Structure Community Plankton in Pondok Lapan Lakedesa Naman Jahe Kecamatan Salapian Kabupaten Langkat) Fahmi Fadhli Rais; Yunasfi Djayus; Ahmad Muhtadi
AQUACOASTMARINE Vol 3, No 4 (2015): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

In aquatic ecosystems, plankton is a big role in the food chain. This is because therole of plankton as producers (phytoplankton) and first level consumer (zooplankton) in thewaters for other organisms that it can be used as a feeding including fish. This research isfocused on plankton for structure community and measurement of physical and chemicalfactors. This research was held in January-March 2015. The method of research is by usingpurposive random sampling to determine the station's for some intent and purpose. Thecarrying out of plankton did by using Van Dorn water sampler a modified water samplingand then filtered with a plankton net no. 25. The diversity of plankton in these watersclassified as the medium category with H '2.121 value. The types of plankton which found inhigh abundance is Scenedesmus, Chodatella and Ankistrodesmus. And from the types ofzooplankton are Cyclops, Branchionus and Nauplius. Based on its saprobic coefficient isknown that these waters classified as moderately polluted by 1,158 value and classified intothe phase of βmeso/oligosaprobik.Keywords : Pondok Lapan Lake, Structure Community, Plankton, Saprobik.
Struktur Komunitas Nekton di Danau Pondok Lapan Desa Naman Jahe Kecamatan Salapian Kabupaten Langkat (Community Structure of Nekton in Pondok Lapan Lake’s Desa Naman Jahe Kecamatan Salapian Kabupaten Langkat North Sumatera) Nurul Azmi; Yunasfi Djayus; Ahmad Muhtadi
AQUACOASTMARINE Vol 3, No 4 (2015): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Nekton is organism that can swim and move on their own accord with exampleamphibians and aquatic insect. This study aims to determine the structure of nektoncommunity and relation about physical and chemical conditions in the Lake Pondok Lapan .This study was carried out from January to March 2015. Data collection were nekton speciescomposition and abundance, as well as water quality data as a supporter. Nekton retrievalused fish nett and fishing rod. The results showed there were 5 of the Ordo, of which 4 ordobelongs to fish and 1 ordo of shrimp. Sepat rawa (Trichogaster trichopterus) was found to becaught at most in the amount of 141 and 56% relative abundance. Diversity nekton in PondokLapan lake including low at 1,95. General dominance index value approaching 0 is equal to0,23. It shows that almost no one species dominates. Value uniformity tends to 1. The figureshows the number of individuals of each type of deployment is the same. Pearson correlationanalysis results showed that temperature, depth, water transparancy, pH ,DO and COD has apositive correlation with the abundance of nekton while turbidity and COD have a negativecorrelation or do not have the relationship with the abundance of nekton.Keywords: Pondok Lapan Lake, Structure Comunity, Nekton.
Analisis Kualitas Air dan Beban Pencemaran di Danau Pondok Lapan Kecamatan Salapian Kabupaten Langkat (Analysis of Water Quality and Pollution Load in Pondok Lapan Lake Kecamatan Salapian Kabupaten Langkat) Ahmad Rizki; Yunasfi Djayus; Ahmad Muhtadi
AQUACOASTMARINE Vol 3, No 4 (2015): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Pondok Lapan Lake is an artificial lake located in Dusun Pulka Desa Naman JaheKecamatan Salapian Kabupaten Langkat. Pondok Lapan Lake around palm plantations. Thelake was originally made for irrigation. However, the surrounding communities do not havethe will to farm, they prefer planting such as palm oil and rubber tree. The study focused onwater quality and pollution load. This study was conducted in January until March 2015.Water sampling is done by using a sampling below the surface of the water. Samples of waterwas analyzed in Balai Teknik Kesehatan Lingkungan dan Pengendalian Penyakit (BTKLPP)kelas 1 Medan. The study resulted by the status of water quality with storet method based onthe quality standard of Grade I and II, -17 in a polluted medium and 0 in good condition.Status of water quality with pollution index method based on the class I and II,1.024 and0.617 in lightly polluted and in good condition. Pollution load capacity that can get into thewaters of Pondok Lapan Lake is 1,984 Pa kg / year.Keywords: Pollution Load, Pondok Lapan Lake, Water Quality
KONDISI EKOLOGI MANGROVE DI PANTAI PUTRA DELI DESA DENAI KUALA KECAMATAN PANTAI LABU KABUPATEN DELI SERDANG PROVINSI SUMATERA UTARA The Ecological Condition of Mangrove in Putra Deli Beach, Denai Kuala Village, Pantai Labu Sub District, Deli Serdang Distr Dinarta Hutabarat; Yunasfi Djayus; Ahmad Muhtadi
AQUACOASTMARINE Vol 3, No 5 (2015): JURNAL AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Mangerove is the living plant community between the sea and the land that wasinfluenced by the tides. Putra Deli beach in Denai Kuala village, Pantai Labu Regency ofNorth Sumatera has an area of mangrove forest about 20 Ha. Putra Deli Beach still has anatural mangrove ecosystem. But, the coastal has long been used by the local community as asourceof livelihood especially mangrove orest logging. This research was aimed to know theecological condition of mangrove waters. This research is done in March 2015 till April 2015.This research is done with a purposive sampling method by taking and observing of bioticcomponents which was mangrove vegetation and density of Telescopium telescopium andthe measurement of water quality parameters. Data analysis included analysis of mangrovevegetation, analysis of water quality, analysis of substrate and analysisof morfometri leaves.There are 7 kinds of mangrove which found in the research location, namely Acrostichumspeciousum, Avicennia alba, Avicennia lanata, Avicennia marina, Bruguiera cylindrica,Lumnitzera littorea, and Rhizophora mucronata. Based the decision of environment ministernumbe 201/2004, the mangrove density in all of the stations included in category mediumand the mangrove cover included in category rarely. The kind of mangrove substrate at thisresearch is very solid. The condition of mangrove waters compared with the decision ofenvironment minister number 51/2004. The kind of mangrove substrate at the tis research isclays sand. Telescopium telescopium much found in station I. the biggest diversity index is inthe station I about 3.8.Keywords: Mangrove, The ecological condition, Water quality, T. telescopium
ESTIMASI DAYA DUKUNG PESISIR DENGAN KESEIMBANGAN MASSA (MASS BALANCE) TERHADAP TAMBAK DI DESA LALANG KECAMATAN MEDANG DERAS KABUPATEN BATUBARA Suria Masriani Sinaga; Yunasfi Djayus; Ahmad Muhtadi
AQUACOASTMARINE Vol 4, No 1 (2016): JURNAL AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Research sites in the Desa Lalang Kecamatan Medang Deras Kabupaten Batubara. This research was conducted from july until august 2015. The purpose of this study was to establish potential of area from the marine shrimp farming with mass balance method at Desa Lalang and estimation the carrying capacity of coastal waters of the pond effluent. The data required for analysis of mass balance models of carrying capacity was based on the total ammonia-nitrogen (NH3-N) concentration in coastal waters. Carrying capacity of coastal waters of Desa Lalang Regency maximum pond area calculation may be developed for marine shrimp farming area of 110.733 hectares, this showed that the concentration of ammonia released by the pond had not an impact on the quality of coastal waters because the existing pond area was new opened an area of 100.032 hectars had not exceeded the carrying capacity of the mass balance. Utilization of the existing pond was exceeded carrying capacity then negative impact to coastal area and marine shrimp farming, so be needed to expand it in this area.Keywords: Carrying capacity, coastal area , marine shrimp farming, mass balance
KAJIAN KESESUAIAN EKOWISATA MANGROVE DI PANTAI PUTRA DELI DESA DENAI KUALA KECAMATAN PANTAI LABU KABUPATEN DELI SERDANG PROVINSI SUMATERA UTARA Adenia Constansia Sitepu; Yunasfi Djayus; Ahmad Muhtadi
AQUACOASTMARINE Vol 4, No 2 (2016): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Putra Deli Beach is located in Deli Serdang with an area of approximately 22 ha. This study determine the potential of mangrove ecosystem ecotourism as an object, calculate the suitability and mangrove ecotourism carrying capacity, inventory of facilities and supporting infrastructure in Putra Deli Beach, potential of mangrove obtained by transect measurement of mangrove while the tour suitability obtained by using mangrove ecotourism suitability criteria and supported by interviews with the community and visitors to establish the carrying capacity of the aera and the concept of management. The study was conducted in March until July 2015. The method used was purposive random sampling for potential mangrove and interviews. Samples were taking from three stasiun, stasioin I (located at the West Coast of Putra Deli Beach), station II (located in the middle of Putra Deli Beach) and station III (located in the eastern part of Putra Deli Beach). Mangrove species found include: Avicennia alba, A. lanata, A. marina, Rhizophora mucronata, Bruguiera cylindrica, Acrostichum speciosum, Lumnitzera littorea with population density values exceeding 1000 trees/ha. The mangrove ecotourism suability index at the first station was 71,79% Suitable with Condition, station II was 76,92% Suitable with Condition and station III was 74,35% Suitable with Condition. The carrying capacity (DDK) at first station was 20 persons/day, 24 persons/day at second station and 16 persons/day at third station. The management concept of Putra Deli Beach was definited by the public and controlling by government.Keywords : Ecotourism, Mangrove, Institutioal Patterns, Putra Deli Beach
ANALISIS KUALITAS PERAIRAN PANTAI SEI NYPAH KECAMATAN PERBAUNGAN KABUPATEN SERDANG BEDAGAI PROVINSI SUMATERA UTARA Analisist Water Quality in Sei Nypah Beach Serdang Bedagai District North Sumatera Province Rizki Eka Putra; Budi Utomo; Ahmad Muhtadi
AQUACOASTMARINE Vol 4, No 2 (2016): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Sei Nypah beach are located in the eastern coast of Sumatra, it has a variety ofactivities that affect the water quality. Information and understanding of environmentalchange is indispensable in ecosystem monitoring efforts.This research aims todetermine the status of Sei Nypah’s the water quality. This research had been conductedon May to Juny 2015 in Sei Nypah Beach, Serdang Bedagai District, North SumateraProvince. There are three station observed, Station 1 : aqua culture activities area;station 2 : agriculture activities area; and station 3: tourism activities area. Samplingwas done three time within 2 months. The value of physical and chemical parameters ofwater include temperature from 29,2 – 31,9 oC, turbidity 2 – 8 mg/l, pH 7,4 – 8,5,salinity 25 – 30 o/oo, DO 7,6 – 8 mg/l, BOD 0,6 – 1,7 mg/l, COD 11,12 – 18,36 mg/l,nitrate 0,0029 – 0,0041 mg/l, and phosphate 0,015 – 0,075. Sei Nypah’s water quality topollution index and storet method for station 1, station 2, and station 3 according werecatagorized to class lightly polluted.Keywords : Sei Nypah Beach, Pollution Index, Storet.
PERTUMBUHAN DAN LAJU EKSPLOITASI IKAN TERI PEKTO (Stolephorus Waitei) DI PERAIRAN BELAWAN KOTA MEDAN SUMATERA UTARA “Growth and the rate exploitation of Anchovy Pekto (Stolephorus waitei) in the sea of Belawan , Medan, North Sumatra” Dede Yuanda; Miswar Budi Mulya; Ahmad Muhtadi
AQUACOASTMARINE Vol 5, No 1 (2017): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

Anchovy Pekto is one of fish commodity that has high economic value in Medan, especially in Belawan. This type of fish is also in demand in the local market. So as fisherman of anchovies put Anchovy Pekto as a main target catch for their fishing. But, this activity has a negative impact to Anchovy Pekto population. This research was conducted in Belawan in June to August 2015, which aims to examine growth pattern, growth parameters, condition factor, and the rate of exploitation in order to provide appropriate management model for the fish resources. Primary data is total length and wet weight of 1137 samples of Anchovy pekto, whereas secondary data is the sea surface temperature data. The cohort length of fish is separated by Bhattacarya method in FISAT II software. Based on the estimation growth parameters by Von Bertalanffyin which the asymptotic length (L∞) = 7,04 cm, the growth coefficient (K) = 1,50 per year and the age at zero length (to) = -0,15 from the empiricalPauly’s method. Then the growth equation of Anchovy Pekto is Lt = 7,04 (1-e[-150(t+0,15]). The value of b obtained from the relations of weight- length Anchovy Pekto 2,975. Anchovy Pekto growth pattern is negative allometric with an equation growth W=0,007L2,975. the highest and the lowest valueof factor conditionare 0,53 and 1,86. the rate of total mortality (Z) Anchovy Pekto is 4,42 per year with natural mortality rate (M) 2,87 per year, and fishing mortality rate 1,54 per year so that the rate of exploitation is obtained with the amount 0,34 and the value of the exploitation rate does not exceed the optimum exploitation which is 0,5.Keywords: Anchovy Pekto, Long-weight, Pattern Of Growth, Factor Condition, Mortality.
HUBUNGAN LEBAR KARAPAS DAN BERAT KEPITING BAKAU (Scylla spp.) DI PERAIRAN KAWASAN MANGROVE DESA JARING HALUS KABUPATEN LANGKAT SUMATERA UTARA Raswin Nasution; Hesti Wahyuningsih; Ahmad Muhtadi
AQUACOASTMARINE Vol 6, No 1 (2018): AQUACOASTMARINE
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Sumatera Utara

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Abstract

The Mangrove Crabs population is typically associated with good Mangrove forest, so habitat loss will have a serious impact on the Crabpopulation. One of the areas of Mangrove Crab catching in nature is theMangrove Area Waters of Jaring Halus Village. The purpose of this research was to know the relationship between the width of the carapace and the weight of theMangrove Crab (Scylla spp.) in Mangrove Waters of Jaring Halus Village,Langkat Regency, North Sumatera. This research was conducted in December 2016 - January 2017 with 3 catching stations using Bubu fishing equipment of 45 units. The catch was analyzed by simple linear regression W = a Lb. The number of Mangrove Crabs caught 178 heads consisting of 93 males and 85 females with sex ratio between male and female is 1 : 0,91. The carapace's width of caughtCaps ranged from 41 to 96 mm where the male carapace's width ranged from 41 - 90 mm, while the females ranged from 41 - 96 mm. Heavy Crab Mangrove  that caught ranged from 30-540 mm where the males ranged from 30 - 370 grams while the female 30-540 grams. Growth of male and female mangrove crabs is positive allometric (b > 3) which means more dominant weight accretion compared to long accretion.Keywords: Jaring Halus Village, Mangrove, Scylla spp.
Co-Authors Abbas Alfuti , Abil Adenia Constansia Sitepu Adil Junaidi Ahmad Rizki Ahyar Pulungan Aji, Egi Setia Ajuan Ritonga Almira, Della Ami Tjitraresmi, Ami Amirah Amirah Andari, Ella Anggita Della Lestari Ani Rahmawati Ashshiddiq, Muhammad Arif Asmadi asmadi Asy Syifa, Khadijah baihaki, imam Berliana, Melisa Intan Binti Nur Asiyah BUDI UTOMO Citra Pangestu D. Ariska Dani Sumaryadi Darma Bakti Daulay, Achmad T. Dede Yuanda Desrita Desrita Desy Ariska Desyandri Desyandri Dewinta, Astrid Fauzia Dinarta Hutabarat Dwi Prasetyo DWI SURYANTO Eli Halimah, Eli Emma Surahman, Emma Entris Sutisna, Entris Eri Yusni Eulis Safina Eva Feriadi Eva Lia Risky Sinaga F. F. Rais Fadhilah, Amanatul Fahmi Fadhli Rais Febriyanti Panjaitan Fuad Hasan Gatera, Vesara A. Hafiyyan, Qalbi Harahap, Cici Maulidiah Harahap, Muhamad Haikal Firyaldi Herdaningsih, Sulastri Herdaningsih, Sulastri Herdaningsih, Sulastri Hesti Wahyuningsih Hidayati, Tita Kosima I Gusti Ngurah Antaryama Ida Musfiroh, Ida ikhwan Arief Purnama Imam Baihaqi IMROATUL CHUSNIAH Indah Anjar Resky Irene anggraini Irvanul Arifin, Mohammad Ishak, Mohd Yusoff Isten Sweno Tamba Jamiyanti, Eva Jannah, Sutra Wardatul Junaidy, Adil Kadarwan Soewradi KANIA NABILA FAJRIANTI Kartasasmita, Rahmana E Kartasasmita, Rahmana E Kembaren, Natasyha Pebrina Br Sembiring Keri Lestari Khairunnisa Kurlillah, Rizki Manullang, Kristina Natalia Manurung, Bunga Ulita Marufi, M. Marwan, Abang Maser, Wahyu Haryati Melisa Intan Barliana, Melisa Intan Mey Susanti Miftahul Jannah Miswar Budi Mulya Moelyono Moektiwardoyo Mohammad Basyuni Muammar Muammar Muhammad Ma’rufi Muhammad Reza Cordova, Muhammad Reza N. Azmi Nababan, David NADYA INDAH DEWANTI, NADYA INDAH Nanda Putri Nazara, Wilman Nurmala Sari Nurmatias Nurmatias Nursyamsiah, Tresna Nursyamsiah, Tresna NURUL ANNISA Nurul Azmi Orbita R. Dhuha Pardamean Lubis Pasaribu, Rihan Addilah Patihul Husni Perangin Angin, Imanuel Kemenangenta Perwira, Anggun Putri Pesta Saulina Sitohang Pindi Patana Pratiwi Pratiwi Priyogo, Prengki Pulungan, Ahyar Punomo, Punomo Purba, Theresia Widi Astuti Putri Churnia Arifin Qadar Hasani Rabihati, Etty Rambe, Ade Septiya Jumiani Randy Setiawan, Randy Raswin Nasution Rendra Setiawan, Gusti Ridwan, M. Deny Rifqi Rama Dhani Rizal Mukra Rizal Rizal Rizki Eka Putra Rizki Ridoan Rizki, A. Rosanti, Indah Rudolf Y. Ompusunggu Rusdi Leidonald Ryanti, Eva Sabilah Fi Ramadhani Sandy, Sarah D. Sarah Diba Sandy sarpawi sarpawi Sasongko, Hartanto Wahyu SHAFIRA SHAFIRA Sholih, Mally G. Siahaan, Vania S.P Silaban, Matthew Federich Willyam Simaremare, Elisabet Rosevenny Sinurat, Ries Ruth Rytond Siregar, Rizky Febriansyah Siregar, Zufriwandi Siti Abnur Kamala SITI NURUL KHOTIMAH Siti Saidah SITI SAIDAH Slamet Ibrahim Sri Hartini Suria Masriani Sinaga Syafriadi Syafriadi Taryono, Taryono TIJANIYAH TIJANIYAH, TIJANIYAH Toibullah Siregar Triwilaswandio Wuruk Pribadi Utomo, Satriyo Vina Maratus Salsabila Wardatul Jannah, Sutra Winarni, Rina Yasmiwar Susilawati Yunasfi Djayus Yunasfi Yunasfi yunasfi yunasfi Yunasfi, Yunasfi Zefri Ade Gurukinayan Zufriwandi Siregar Zulham Apandy Harahap Zulham Apandy Harahap