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All Journal JURNAL ILMIAH PLATAX Jurnal Kelautan Tropis Journal of Applied Geospatial Information Omni-Akuatika Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis EDUKATIF : JURNAL ILMU PENDIDIKAN Best Journal (Biology Education, Sains and Technology) Jurnal Laot Ilmu Kelautan Bubungan Tinggi: Jurnal Pengabdian Masyarakat International Journal Of Science, Technology & Management (IJSTM) Nusantara Hasana Journal ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) JOMPA ABDI: Jurnal Pengabdian Masyarakat Jurnal Bangun Abdimas Jurnal Pengabdian Masyarakat Bhinneka Abdi Jurnal Publikasi Journal of Research and Publication Innovation Jurnal Medika: Medika Journal of Marine Studies
Welmar Olfan Barat, Welmar Olfan
Universitas HKBP Nomensen Pematangsiantar
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Sosialisasi Peran Mangrove terhadap Kelimpahan Ikan di daerah Pelabuhan Belawan Ewin Handoco Saragih; Welmar Olfan Basten Barat; Winfrontstein Naibaho
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 3 No. 1 (2022): Februari
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v3i1.782

Abstract

Mangrove forest is the element that plays the most role in balancing environmental quality and neutralizing pollutants. Mangrove ecosystems have an important role in the survival of living things both as providers of environmental services and meeting the needs of human life, mangrove ecosystems have ecological functions, namely as abrasion resistance, climate enlargement, economic function, as a livelihood for coastal communities, production of sharing forest products, resources building material. Damage to mangrove ecosystems can be caused by land conversion activities into other uses such as residential land, plantations, aquaculture, and tourism. This socialization of the role of mangroves in fish abundance is important to provide input to the community that the area around the mangrove has a function as a nursery area for fish seeds and also a fish house. This socialization is very useful for the community so that the community is aware of the importance of the role of mangroves for the abundance of fish related to the community's economy.
Identification of Phytochemical Compounds Aquatic Plants in Pematangsiantar Herna Febrianty Sianipar; Apriani Sijabat; Christa Voni Roulina Sinaga; Mardame Pangihutan Sinaga; Welmar Olfan Basten Barat
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i4.4255

Abstract

Aquatic plants are float on the surface of the water and easy to continue to grow and can even be detrimental to the environment and other aquatic organisms it they have expanded, so it is necessary to use them to reduce losses. One way to use aquatic plants is to know the phytochemical compounds of these aquatic plants, so that they can be used as medicinal plants. The purpose of this study was to determine the phytochemical compounds found in aquatic plants such as water eceng gondok (Eichhornia crassipes), genjer (Limnocharis flava) dan kiambang (Salvinia molesta). This research was conducted at the water resources management laboratory University of HKBP Nommensen Pematangsiantar with the extraction method from the leaves. Phytochemical test carried out consisted of alkaloids, flavonoids, saponins, phenolics, tannins, and vitamin c. phytochemical test results of alkaloids, flavonoids, phenolics and vitamin c were found in the three types of leaves the aquatic plants, while saponins were not found in genjer and eceng gondok, then tannins were not found in genjer. The highest phytochemical content is found in kiambang, and the lowest phtochemical content is found in genjer plants. Furthermore, it is necessary to test the antibacterial activity of aquatic plants originating from the water of Pematangsiantar city.
The Effect of Water Quality on Growth of Microalgaes Chlorella pyrenoidosa Srinatalia Silaen; Welmar Olfan Basten Barat
Journal of Applied Geospatial Information Vol 6 No 2 (2022): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v6i2.4396

Abstract

The diversity of microalgae on earth is very high, the high diversity of microalgae allows us to obtain microalgae that have the potential to produce large amounts of oil. In addition, the use of microalgae as a source of biodiesel does not interfere with the food supply. This is because microalgae do not compete with food. The results of the analysis showed that the parameters that passed the water quality standard were BOD in the range of 0.990-90.76 mg/l, COD in the range of 3.093 -283 mg/l, and phosphate in the range of 0.01-0.21 mg/l. Judging from the color and smell, the waters that are closer to the cages will be greener in color accompanied by the smell of fish mixed with fishy feed and feel thick. COD content ranged from 3.093 mg/l-269.5 mg/l. This is caused by the high concentration of organic matter in the waters. The quality of the waters of Lake Toba which is classified as not good is the measurement of color, smell, taste, BOD, COD, and Phosphate in the waters. Which are classified as good temperature, turbidity, pH, Ammonia, and Nitrate. The level of fertility of the waters of Lake Toba in terms of the abundance of phytoplankton is included in the fertile category. If it is categorized at the level of pollution through the diversity index, then the waters are included in the moderately polluted category.
Sosialisasi Pentingnya Fasilitas Sarana Air Bersih Di Desa Mbinanga Kecamatan Pegagan Hilir Kabupaten Dairi Ewin Handoco; Welmar Olfan Basten Barat; Winfrontstein Naibaho; Mardame Pangihutan Sinaga; Reaful Samuel
Jurnal Pengabdian Masyarakat Bhinneka Vol. 1 No. 3 (2023): Bulan Februari
Publisher : Bhinneka Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58266/jpmb.v1i3.52

Abstract

Sosialisasi Pentingnya Air Bersih, dimana air bersih merupakan salah satu kebutuhan masyarakat yang menunjang kehidupan suatu komunitas. penyediaan air bersih berkaitan erat dengan status kebersihan dan kesehatan setiap individu dalam masyarakat. Kegiatan sosialisasi ini ditujukan pada masyarakat Desa Mbinanga untuk memberikan edukasi tentang pentingnya penggunaan air yang bersih dalam kehidupan sehari-hari. Maksud dari kegiatan ini adalah untuk memberikan pengetahuan pada masyarakat setempat tentang pentingnya penggunaan air bersih dalam kegaitan sehari-hari. Metode yang digunakan dalam kegiatan ini adalah sosialisasi.Masyarakat Desa Mbinanga sangat membutuhkan sentuhan nyata untuk dapat menerima manfaat secara langsung dari adanya sarana air bersih di lokasi mereka bertempat tinggal. Selama ini masyarakat harus berjalan jauh dari atas bukit ke lembah atau desa tetangga mereka yang berjarak sekitar 1-1,5 Kilometer dari desa mereka. Sehingga hal ini sangat memberatkan dan tidak efektif serta efisien baik dalam waktu, tenaga dan biaya. Sosialisasi Sehingga dengan adanya sosialisasi ini diharapkan ada tindakan secara langsung kepada masyarakat. Pengabdian ini dapat meningkatkan pengetahuan masyarakat tentang pentingnya air bersih. Masyarakat mampu menyediakan air bersihnya dengan bergotong royong dan bekerjasama dengan pihak luar sebagai penyokong dana untuk keperluan material pembangunan. Perlunya kerjasama lintas sektoral baik masyarakat, swasta, keagamaan dengan pemerintah agar terjadi sinergi yang positif secara terintegrasi sehingga manfaatnya lebih luas ke seluruh desa. Mengingat air bersih merupakan hak dan kebutuhan seluruh warga desa.
Utilization of Palm Oil Mill Effluent (POME) Liquid Waste to Increase Density and Growth Rate of Microalgae Chlorella Pyrenoidosa Welmar Olfan Basten Barat; Srinatalia Silaen; Ewin Handoco S
Journal of Applied Geospatial Information Vol 7 No 1 (2023): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v7i1.5236

Abstract

Microalgae Chlorella pyrenoidosa is a microalgae that has the potential to have various roles, especially as a bioabsorbant for organic waste. The growth of the oil palm plantation industry is also directly proportional to the increase in waste generated from the CPO production process, namely POME Waste (Palm Oil Mill Effluent). POME waste has a high nutrient content so that it can be utilized by the microalgae Chlorella pyrenoidosa. This study aims to utilize POME waste to increase the growth of Chlorella pyrenoidosa. Microalgae cultivation had a significant effect on the 1:2 treatment and 1:3 treatment when compared to the control cultivation medium with the highest cell density values ​​of 263(106cells/ml) and 279(106cells/ml) respectively. Injection of POME waste into microalgae rearing media will have an impact on increasing the growth of Chlorella pyrenoidosa microalgae.
SOSIALISASI PENGGUNAAN PICTURE SERIES (GAMBAR SERI) UNTUK MENUNJANG KETERAMPILAN SISWA KELAS 8 DALAM MENULIS “RECOUNT TEXT” DI SMP NEGERI 4 PEMATANG SIANTAR Heppy Theresia Sitompul; Elprinawati Purba; Natalia Murni Br Situmorang; Novita Simanjuntak; Sarah Aufah Athiya; Sri Maneni Manurung; Herman Herman; Welmar Olfan Basten Barat; Elina Lulu Rumapea
Jurnal Bangun Abdimas Vol 2 No 1: Mei 2023
Publisher : PT. Bangun Harapan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56854/ba.v2i1.180

Abstract

Hasil observasi kemampuan siswa pada sekolah ini,dapat diketahui bahwa siswa kelas 8 SMP Negeri 4 Pematang Siantar memiliki kemampuan yang cukup baik dalam menulis teks berbahasa Inggris. Kemampuan yang cukup baik ini dapat dilihat dari banyak nya kertas yang terisi dengan waktu yang cukup singkat saat pemberian tugas, cerita yang ditulis cukup menarik, letak penulisan sesuai dengan struktur teks recount, serta penggunaan tata Bahasa yang cukup bagus. Siswa kelas 8 SMP Negeri 4 Pematang Siantar yang terdiri dari 32 siswa adalah subjek dalam observasi ini. Para peneliti menggunakan lembar pengamatan yang sudah disiapkan untuk mengambil data dari guru dan siswa dikelas. Dalam penelitian ini guru yang mengajar Bahasa Inggris di Kelas 8 SMP Negeri 4 Pematang Siantar bertindak sebagai pengamat. Hasil dari pengabdian ini adalah gambar seri (picture series) ini mempengaruhi semangat, aktivitas, kreatifitas serta kepercayaan diri pada siswa selama proses pembelajaran. Hasil tes kemampuan menulis teks recount ini 81% atau 26 siswa memenuhi Kriteria Ketuntasan Minimal (KKM). Maka dapat disimpulkan bahwa gambar seri efektif untuk meningkatkan kemampuan siswa dalam menulis recount teks. Maka disarankan kepada Guru Bahasa Inggris menggunakan gambar seri sebagai media pembelajaran khususnya dalam penulisan teks recount karena menimbulkan daya tarik siswa  terhadap gambar yang berwarna dan melatih imajinasi mereka dalam berfikir dan mengingat kejadian di masa lampau.
MENINGKATKAN SEMANGAT BELAJAR PADA ANAK-ANAK DAN MEMBANTU MASYARAKAT DALAM KEGIATAN BERTANI DI DESA MBINANGA Riau Wanshi Manik; Gokma Nababan; Ivan Gultom; Welmar Olfan Basten Barat
Abdi Jurnal Publikasi Vol. 2 No. 1 (2023): September
Publisher : Abdi Jurnal Publikasi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pegagan Hilir is a sub-district in Dairi Regency, North Sumatra Province, Indonesia. Pegagan Hilir District is 24 km away from the capital of Dairi Regency, Sidikalang. Community Service activities are carried out with activities which are generally divided into two activities in the educational sector by providing afternoon tutoring and in the social sector by conducting interviews and assisting the activities of farmers in Mbinaga Village. Things that were successful during the service: the weekly attendance of the children showed that the children's enthusiasm and enthusiasm increased every week. They also showed increased concern and solidarity with each other. based on interviews conducted by many people who complained about the lack of funds to run their farms. so there is a need to support farmer groups by providing strength through increasing access to aid and capital facilities through 2 areas, namely education and social a. The children in Mbinanga village have high enthusiasm and enthusiasm for education. This is very good for supporting progress in the field of education for future generations by instilling the values ​​of caring and cooperation to achieve common goals. B. Farmers in Mbinanga village need to get support from farmer groups to improve farmer welfare with the help of improving facilities and capital.
MENINGKATKAN KESADARAN MAYARAKAT PENTINGNYA LINGKUNGAN YANG BERSIH DI DESA SIMARTUGAN Reaful Samuel Sitorus; Ronita Haulian Simamora; Deo Kartiko Ambarita; Welmar Olfan basten Barat
Abdi Jurnal Publikasi Vol. 2 No. 1 (2023): September
Publisher : Abdi Jurnal Publikasi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Simartugan Village is one of the villages in Pegagan Hilir District, Dairi Regency, North Sumatra Province. This village is inhabited by 525 families with a total population of 2029 people. Simartugan village consists of 6 hamlets, namely, Simartugan I, Simartugan Julu I, Simartugan Julu II, Kuta Great, Tanggarube, Jumambalno, where agriculture is the main source of livelihood for its inhabitants. A good and healthy environment is very important in supporting human survival. The environment is everything that is around us, whether alive or not, such as air, water, soil and everything on it such as plants, animals, microorganisms (Suanta, 2016). This community service is carried out with a social approach, where this is more easily applied in a society that is more prominent in cultural, kinship and environmental ties. In this way, the social capital approach allows for reciprocal ties with local communities. Social capital as social glue in these communities will largely be determined as an accumulation of various types of social, psychological, cultural aspects that influence cooperative behavior. With the description of social capital as above, it is believed that such an approach can be used as a means to socialize the importance of clean environmental conditions to the community. The results obtained show that the number of people attending to carry out mutual cooperation activities is very low where this is influenced by several factors, namely: Lack of public awareness of the importance of a clean environment, The economic conditions of the community where the main livelihood of the Simartugan village community is farming. The community prefers to work in the fields rather than having to participate in mutual cooperation activities. When mutual cooperation activities coincide with the harvest season in Simartugan village, this makes the community prefer to work and harvest on the land they own. Lack of communication between the hamlet head and the community local.
Arthropoda Community Structure in Conservation Forest and Oil Palm Plantation in Java Tongah Village Area, Hatonduhan District, Simalungun Regency Silaen, Srinatalia; Barat, Welmar Olfan Basten
Journal of Applied Geospatial Information Vol 7 No 2 (2023): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v7i2.6258

Abstract

The research about composition and structure of Arthropoda community was conducted at oil palm plantations Arthropoda were collected at oil palm plantation, conservasion forest and forest edge sites (between conservation forest and plantation area) by survey method with systematic random sampling for arthropoda in litter and soil. A total of four Arthropoda species that belonging to 2 orders, 3 families, 4 general and 57 individuals was collected. The highest number of individuals Isotomiella sp. (14 ind) family Isotomidae. Arthropoda community composition consists of 3 families & 4 species: Neanuridae (Lobella sp.), Brachystomellidae (Brachystomella sp.) & Isotomidae (Isotomiella sp. & Folsomides sp.), Arthropoda community structure The highest density is in the litter location I (16 ind / m2) while the lowest density is in location III (3.56 ind / m2). The highest soil density is in location I (4,538.56 ind / m3) & the lowest density is in location III (789,761 ind / m3). The highest relative density is location III (100%) & the lowest relative density is found in location I (litter, 5.8%) & (soil, 8.9%). The highest Shannon-Wiener diversity index, both litter and soil, were found in location I (litter 1.28) & (soil, 1.38) and the lowest diversity index was found in location III (0). The highest similarity index for Sorensen was location III (75.71%) and the lowest was the comparison between locations II & I (20%).
Mangrove Plant Community Structure of Kwala Indah Village, Batu Bara Regency Purba, Ricky Tommy Fransiskus; Barat, Welmar Olfan Basten; Siburian, Daniel Tony E
Journal of Applied Geospatial Information Vol 7 No 2 (2023): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v7i2.6769

Abstract

Coastal areas are transitional areas between land and marine ecosystems that have high biological productivity. Mangroves are a type of plant that grows in coastal areas or river estuaries and has an ecological function by acting as the last defense against sea waves after coral reef and seagrass ecosystems, as sediment traps, as a place to find fish food, as a fish spawning ground, as a shelter, and as a place for fish farming. Mangrove Plant Community Structure Research in the Kwala Indah Village Area was conducted in August–October 2023 with the aim of knowing the types of mangroves, mangrove diversity and uniformity, dominance, Important Value Index (INP), and mangrove crown cover in Kwala Indah Village. The method used in the observation of mangrove plant community structure is to use the quadrant transect method by analyzing species density, relative density, species frequency, relative frequency, species dominance, relative dominance, and important value index at the tree, sapling, and seedling levels, as well as crown cover. Based on the results of the study, 7 species were found, namely Xylocarpus granatum, Xylocarpus mekongensis, Rhizophora apiculata, Rhizophora mucronata, Soneratia alba, Bruguiera parviflora, and Excoecaria agallocha. Xylocarpus and Rhizopora have the highest INP, diversity, uniformity, and dominance. Canopy cover is in the medium category; coastal areas are transitional areas between terrestrial and marine ecosystems that have high biodiversity values.
Co-Authors Ady Frenly Simanullang Ananda Yuli Fazilah Tanjung Andry Agasi Hasiholan Purba Apriani Sijabat Cut Meurah Nurul ‘Akla Deo Kartiko Ambarita Dietriech Geoffrey Bengen Elina Lulu Rumapea Elprinawati Purba Erlangga Erlangga Ewil Wiranda Sitorus Ewin Handoko Fitra Wira Hadinata Gokma Nababan Goldbert Harmuda Duva Sinaga Hadinata, Fitra Wira Handoco S, Ewin Handoco, Ewin Hendrik V. Ayhuan Heppy Theresia Sitompul Herlina Adelina Meria Uli Sagala Herman Herman Herna Febrianty Sianipar Herna Febrianty Sianipar Ivan Gultom Jono Barita Sianipar Leni, Yusyam manik, ria retno Manik, Riau Wanshi Mardame Sinaga Mardiah, Nur Ainun Muhammad Hatta Mujizat Kawaroe NAIBAHO, RONALD NAIBAHO, TOGAR Naibaho, Winfronstein Naibaho, Winfrontstein Natalia Murni Br Situmorang Novita Simanjuntak Nur Ikhsan Nur Jannah Ginting Pakpahan, Dany Alberto Purba, Ricky Tommy Fransiskus Putri Winda Sidabutar Reaful Samuel Reaful Samuel Sitorus Retno, Ria Riau Wanshi Manik Riri Ezraneti Romson Hiras Naibaho Ronita Haulian Simamora S, Ewin Handoco Saragih, Ewin Handoco Sarah Aufah Athiya Setya Indra Padma Putri SIANTURI, TAMBOS AUGUST Siburian, Daniel Tony E Silaen, Srinatalia Simamora, Ronita Haulian Sinaga, Christa Voni Roulina Sinaga, Mardame P Sinaga, Mardame Pangihutan Sitio, Lista Celsi Wilda Sitorus, Reaful Samuel Sri Maneni Manurung Srinatalia Silaen Srinatalia Silaen Srinatalia Silaen Syahrial Syahrial SYAHRIAL SYAHRIAL Vaisal Raju Siahaan Wendy Sudito Pakpahan