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All Journal AQUATIC SCIENCE & MANAGEMENT JURNAL ILMIAH PLATAX Journal of Indonesian Tourism and Development Studies JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI Juvenil: Jurnal Ilmiah Kelautan dan Perikanan AGRI-SOSIOEKONOMI
Rene Charles Kepel, Rene Charles
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Social Sciences

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Community Structure of Macro Algae in Mokupa Village, Tombariri Sub-district, Minahasa District, North Sulawesi Province Rini M Wowor; Rene Charles Kepel; Laurence J. L Lumingas
Jurnal Ilmiah PLATAX Vol. 3 No. 1 (2015): EDISI JANUARI-JUNI 2015
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.3.1.2015.13216

Abstract

Sumich (1992) divided the structure of algae into  3 main parts namely: blade,the leaf like structure which is thin and wide, stipe, trunk like form that elastic to withstand sea waves, and holdfast, known as root-like form function to anchor the plant on the substrate. The study was conducted Mokupa beach waters sub-district Tombariri, Minahasa district. Mokupa coastal waters known to have typical ecosystem found in the tropics such as mangrove forest, coral reef and seagrass beds as well as macro algae community. The area is flat-bed coast with sandy substrate, sandy-silt substrate and rocky-sand substrate. Species of macro-algae found in this area consist of 7 species namely Halimeda macroloba, H. opuntia, Padina minor, Sargassum polycystum, Gracilaria edulis, G. firma, and Udotea orientalis. In general species density for all transect deployed  in the study site Halimeda macroloba has the highest index value, while for species diversity index transect II showing the highest value.   Keywords: Alga, community, diversity, dominance A B S T R A K Sumich (1992) membagi struktur alga menjadi 3 bagian utama yaitu blade yang merupakan struktur yang menyerupai daun yang pipih biasanya lebar, stipe yaitu struktur yang menyerupai batang yang lentur digunakan sebagai penahan hempasan ombak, dan holdfast yaitu bagian dengan bentuk seperti akar yang berfungsi untuk meletakkan tubuh pada substrat. Penelitian ini dilaksanakan di perairan pesisir Desa Mokupa, Kecamatan Tombariri, Kabupaten Minahasa. Daerah pesisir Desa Mokupa merupakan daerah yang lokasinya terdapat ekosistem yang khas di daerah tropis yaitu mangrove, terumbu karang, dan padang lamun, demikian pula terdapat komunitas alga makro. Profil dari pantai tersebut adalah pantai yang landai dengan substrat pasir, pasir berlumpur dan pasir berbatu. Jenis alga makro yang ditemukan di lokasi penelitian berjumlah 7 spesies, yaitu Halimeda macroloba, H. opuntia, Padina minor, Sargassum polycystum, Gracilaria edulis, G. firma, dan Udotea orientalis. Secara keseluruhan kepadatan spesies untuk semua transek yang tertinggi adalah Halimeda macroloba, sedangkan keanekaragaman jenis alga makro tertinggi terdapat di transek II.   Kata Kunci : keanekaragaman, alga, komunitas 1Mahasiswa Program Studi MSP FPIK-UNSRAT 2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi
The inventory of macroalgae in the Mantehage Island waters, Wori sub-district, North Minahasa district in North Sulawesi Province Preisy Meicy Meriam Watung; Rene Charles Kepel; lawrence J. L Lumingas
Jurnal Ilmiah PLATAX Vol. 4 No. 2 (2016): EDISI JULI-DESEMBER 2016
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.4.2.2016.14077

Abstract

This study was carried out in Mantehage Island waters, covering Bango, Tinongko, Buhias, and Tangkasi, with an objective of knowing the taxa composition of macroalgae through morphological studies. Data collection  used  Line Transect method with quadrat. Three 100 m-transect line were placed perpendicular to the coastline. Distance between transects was 50 m, and the quadrat used was 1 x 1 m². Results found 44 species of microalgae, consisting of 3 divisions, 3 classes, 10 orders, 18 families, and 26 genera. Green algae comprised 3 orders, 6 families, 11 genera, and 23 species. Brown algae consisted of 3 orders, 3 families, 5 genera, and 5 species. Red algae had 4 orders, 8 families, 10 genera and 16 species. Keyword : Macroalga, species, Mantehage Island. Abstrak Penelitian ini dilakukan di pulau Mantehage, yakni Desa Bango, Tinongko, Buhias, dan Desa Tangkasi,  dengan tujuan untuk mengetahui komposisi taksa makroalga melalui pendekatan morfologi. Pengambilan data dilakukan dengan menggunakan metode Line Transect kuadrat. Tiga garis transek sepanjang 100 m diletakkan tegak lurus garis pantai dengan jarak antar transek 50 m dan jarak antar kuadrat 10 m. Ukuran kuadrat yang dipakai adalah 1 x 1 m². Hasil penelitian menemukan 44 spesies, yang terdiri dari 3 divisi, 3 kelas, 10 ordo, 18 famili dan 26 genera. Alga hijau terdiri atas 3 ordo, 6 famili, 11 genera dan 23 spesies. Alga cokelat terdiri atas 3 ordo, 3 famili, 5 genera dan 5 spesies. Adapun alga merah terdiri atas 4 ordo, 8 famili, 10 genera dan 16 spesies. Kata Kunci : makroalga, species, Pulau Mantehage   2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi
Development Strategy Of Hygienic Fish Marketing In Samudera Fishing Port of Bitung Resya Ika Firmansyah; Rene Charles Kepel; Suria Darwisito; Rose O.S.E. Mantiri; Vivanda O.J. Modaso; Deiske A. Sumilat; Suzanne L. Undap
Jurnal Ilmiah PLATAX Vol. 8 No. 2 (2020): ISSUE JULY-DECEMBER 2020
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.8.2.2020.29694

Abstract

Hygienic Fish Marketing (HFM) is one of the functional facilities at the fishing port provided to facilitate the marketing of fishery products. The right development strategies of HFM must take into account the potential, opportunities, constraints, and problems.  The objectives of this research are (1) to determine the condition of utilization percentage analysis of fish resources landed at HFM and to analyze the level of facility utilization at HFM, and (2) to arrange strategies and recommendations for the development of HFM at PPS Bitung. The research method used to analyze catch prediction data for the next 10 years was arithmetic analysis. Analysis of utilization percentage was used to find out the level of facility utilization at HFM.  Analysis of the development strategy of HFM at PPS Bitung used SWOT matrix analysis and QSPM analysis.  The projection of fish catch landed over the next 10 years will increase by 24.77% per year, which is predicted to be 83,549.40 tons in 2029.  The level of facility utilization is categorized as good with a value of 71.22%, that utilization level of HFM runs optimally.  Based on the analysis using the SWOT matrix and QSPM analysis, it was found that the priority strategies are the main choices in the development of HFM at PPS Bitung which increase the operational capacity of loading docks and port ponds.Keywords: TPI hygienic, Development Strategy, Internal, and External FactorAbstrakTPI Higienis merupakan salah satu fasilitas fungsional di pelabuhan perikanan yang disediakan untuk memfasilitasi kegiatan pemasaran hasil perikanan.  Strategi pengembangan TPI Higienis yang tepat harus memperhitungkan potensi, peluang, kendala, dan permasalahan. Tujuan dalam penelitian ini yaitu (1) mengetahui kondisi sumberdaya ikan yang didaratkan di TPI Higienis dan menganalisa tingkat pemanfaatan fasilitas di TPI Higienis dan (2) menyusun strategi dan rekomendasi pengembangan TPI Higienis PPS Bitung.  Metode penelitian yang digunakan untuk menganalisa data prediksi hasil tangkapan selama 10 tahun kedepan adalah analisa aritmatik. Untuk mengetahui tingkat pemanfaatan fasilitas TPI Higienis, digunakan analisis persentasi pemanfaatan. Analisa strategi pengembangan TPI Higienis PPS Bitung menggunakan analisa matriks SWOT dan analisa QSPM. Proyeksi hasil tangkapan yang didaratkan selama 10 tahun kedepan mengalami kenaikan sebesar 24,77% pertahun sehingga pada tahun 2029 produksi diprediksi sebesar 83.549,40 ton. Tingkat pemanfaatan fasilitas masuk dalam kategori baik dengan nilai 71,22% sehingga tingkat pemanfaatan TPI Higienis berjalan optimal. Berdasarkan hasil analisa menggunakan matrik SWOT dan analisa QSPM didapatkan prioritas strategi yang menjadi pilihan utama dalam strategi pengembangan TPI Higienis di PPS Bitung yakni meningkatkan kapasitas operasional dermaga bongkar dan kolam pelabuhan.Kata kunci: TPI Higienis, Strategi Pengembangan, Faktor Internal dan Eksternal
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.
Macroalgae Biodiversity in Ondong Coastal Waters. Kandati, Feibe R. S.; Kepel, Rene Charles; Rangan, Jety Kornela; Gerung, Grevo S.; Salaki, Meiske Sofie; Lasabuda, Ridwan
Jurnal Ilmiah Platax Vol. 9 No. 1 (2021): ISSUE JANUARY - JUNE 2021
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.9.1.2021.34136

Abstract

This research was conducted in the coastal waters of Ondong, West Siau District, Siau Islands Regency Tagulandang Biaro with the aim of knowing the composition of macroalgae taxa through a morphological approach. Data retrieval is done by using the Line Transect quadratic method. The results of the study found 15 species consisting of 3 divisions, 3 classes, 10 orders, 12 families, and 12 genera.AbstrakPenelitian ini dilakukan di perairan pesisir pantai Ondong, Kecamatan Siau Barat, Kabupaten Kepulauan Siau Tagulandang Biaro dengan tujuan untuk mengetahui komposisi taksa makroalga melalui pendekatan morfologi. Pengambilan data dilakukan dengan menggunakan metode Line Transect kuadrat. Hasil penelitian menemukan 15 spesies yang terdiri dari 3 divisi, 3 kelas, 10 ordo, 12 famili, dan 12 genera.
Community Structure of Macroalgaes in Coastal Waters of Molas, Bunaken District, Manado City Hadath, Deandra Starsha Bianca; Kepel, Rene Charles; Rangan, Jety Kornela; Sangari, Joudy R.R.; Mantiri, Rose O.S.E; Lasabuda, Ridwan
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.47937

Abstract

As a marine biological resource macroalgae grow and develop naturally in the waters of Manado Bay, especially in the coastal waters of Molas. This study aims to analyze the community structure of macroalgae in the coastal waters of Molas, Bunaken District, Manado City. Data retrieval in the field using the Line Transect method with quadratic sampling technique performed at the lowest ebb analysis of the data required to obtain an overview of the macroalgae community structure and performed several formulas. Found 6 species consisting of 3 red algae (Rhodophyceae) G. edulis, G. salicornia, Gracilaria sp., 1 brown alga (Phaeophyceae) Padina australis, and 2 green algae (Ulvophyceae) Halimeda macroloba and Chaetomorpha crassa. Keywords: macroalgae, community structure, coastal waters, Molas, Manado Abstrak Sebagai sumberdaya hayati laut makroalga tumbuh dan berkembang secara alamiah di Perairan Teluk Manado, khususnya di pantai Molas. Penelitian ini bertujuan untuk menganalisis struktur komunitas makroalga di perairan pantai Molas Kecamatan Bunaken Kota Manado. Pengambilan data di lapangan menggunakan metode Line Transect dengan teknik sampling kuadrat dilakukan pada surut terendah Analisis data yang diperlukan untuk mendapatkan gambaran struktur komunitas makroalga dan dilakukan beberapa formula. Ditemukan 6 spesies yang terdiri dari 3 alga merah (Rhodophyceae) yaitu G. edulis, G. salicornia, Gracilaria sp., 1 alga coklat (Phaeophyceae) yaitu Padina australis, dan 2 alga hijau (Ulvophyceae) yaitu Halimeda macroloba dan Chaetomorpha crassa. Kata kunci: makroalga, struktur komunitas, perairan pantai, Molas, Manado
Macroalgae Communities In The Waters Of Tateli Village, Mandolang, And Mokupa Village Waters, Tombariri, Minahasa District, North Sulawesi Province Turangan, Septiara; Kepel, Rene Charles; Mandagi, Stephanus V.; Mantiri, Rose O. S. E.; Menajang, Febry S. I.; Kambey, Alex D.
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.v12i1.49441

Abstract

On the coast of Beton Panjang and Tasik Ria, there are tidal flats with white sand substrates and some seagrass beds (seagrass) and macroalgae. Until now, there is still limited research on macroalgae in Beton Panjang and Tasik Ria. However, studies on macroalgae, especially aspects of their anatomical characteristics, have not been carried out. Therefore, it is necessary to study the anatomical characteristics and structure of the community. Sampling was carried out at the lowest ebb with the help of an application (to find out the lowest ebb time). They are laying transects at each location for macroalgae data collection as many as 3 transect lines 50 m long drawn perpendicularly from the coast towards the sea with the assumption that the community is evenly distributed. The distance between transects is 30 m with a squared distance of 5 m. Each square is used for data collection measuring 1 x 1 m². Analysis of the density index and relative density in Beton Panjang coastal waters yielded a density value of 0.06 ind.m2 – 0,43 ind./m2. The lowest density value is in the speciesLaurencia papillosa and the highest is in speciesPadina australis With a total density of individuals per species of 0.43 ind./m2. In the coastal waters of Tasik Ria, the highest density index is for species Neomeris  annulled with a value of 0.63 ind./m2. The highest diversity index value is in the coastal waters of Tasik Ria with a value of H' = 2.33, while the highest dominance index is in the coastal waters of Beton Panjang with a dominance value of D = 0.16. The highest wealth and equity values ​​are in the coastal waters of Tasik Ria with a value of d = 2.27 and E = 0.94. Keywords: macroalgae, Beton Panjang, Tasik Ria, anatomical characteristics   Abstrak Di pesisir Beton Panjang dan Tasik Ria terdapat rataan pasang surut dengan substrat pasir putih dan beberapa hamparan lamun (seagrass) serta makroalga. Sampai saat ini, masih terbatas penelitian tentang makroalga di Beton Panjang dan Tasik Ria. Namun, kajian mengenai makroalga khususnya aspek karakteristik anatomi belum dilakukan. Oleh sebab itu, perlu dilakukan kajian karakteristik anatomi dan juga struktur komunitasnya.Pengambilan sampel dilakukan pada saat surut terrendah dengan bantuan aplikasi Tides (untuk mengetahui waktu surut terrendah). Peletakan transek pada masing-masing lokasi untuk pengambilan data makroalga sebanyak 3 garis transek sepanjang 50 m yang ditarik tegak lurus dari pantai ke arah laut dengan asumsi bahwa penyebaran komunitas merata. Jarak antar transek yaitu 30 m dengan jarak kuadrat yaitu 5 m. Setiap kuadrat dipakai untuk pengambilan data berukuran 1 x 1 m². Analisi indeks kepadatan dan kepadatan relatif di perairan pesisir Beton Panjang di dapat nilai kepadatan 0,06 ind.m2 – 0,43 ind./m2. Nilai kepadatan terendah ada pada spesies Laurencia papillosa dan yang tertinggi ada pada spesies Padina australis Dengan jumlah kepadatan individu perjenis 0,43 ind./m2. Pada perairan pesisir Tasik Ria, indeks kepadatan tertinggi ada pada spesies Neomeris annulata dengan nilai 0,63 ind./m2 . Nilai indeks keanekaragaman tertinggi ada pada pada perairan pesisir Tasik Ria dengan nilai H’= 2,33, sedangkan untuk indeks dominasi tertinggi ada pada perairan pesisir Beton Panjang dengan nillai dominasi D=0,16. Untuk nilai kekayaan dan kemerataan tertinggi ada pada perairan pesisir Tasik Ria dengan nilai d= 2,27 dan E= 0,94. Katakunci: makroalga, Beton Panjang, Tasik Ria, karakteristik anatomi.
Structure of the Seagrass Community, In Poopoh Beach Waters, Tombariri District, Minahasa Regency, North Sulawesi Province Mamonto, Riswanto; Kondoy, Khiristin Ivone Fisye; Wantasen, Adnan S.; Kepel, Rene Charles; Pratasik, Silvester Beny; Menajang, Febry Susana Ivone
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.v12i1.49599

Abstract

Seagrass are flowering plants (Angiosperms) that are fully adapted to life immersed in the sea. This plant consists of rhizomes, leaves and roots, (Rhizomes are stems that sink and creep horizontally, leave and flower, and grow roots). It is these rhizomes and roots that hold back the waves and currents on seagrass plants. The purpose of this study was to determine seagrass species, species density, relative density, species frequency, relative frequency, species closure, relative closure, important value index, diversity index, domination index and aquatic environmental conditions. There are 4 species of seagrass found in the waters of Poopoh Beach, namely, Thalassia hemprichii, Enhalus acoroides, Halodule pinifolia, Halophila ovalis. The number of stands of seagrass species in the study area ranged from 53-965 individuals, species density (17.67-321.67) individuals/m2, relative density (3.98-72.61%), frequency (0.045-0.90), relative frequency (3.57-71.42%), species closure (0.41-7.31), relative coverage (1.04-78.12%), seagrass importance value index in Poopoh Beach waters shows that Thalassia hemprchii has the highest importance value index among the other 3 seagrass species namely (212.85%), diversity index (0.97), species dominance index (0.11-0.44%/m²). Environmental conditions in the waters of Poopoh Beach, which has a temperature range of 38°C, a salinity of 35‰, has a substrate of sand, sand mixed with mud, muddy and coral fragments. Keywords: Poopoh Beach, Seagrass, Community Structure. Abstrak Lamun adalah tumbuhan berbunga (Angiospermae) yang sepenuhnya menyesuaikan diri dengan hidup terbenam dalam laut. Tumbuhan ini terdiri dari rhizoma, daun dan akar, (Rhizoma adalah batang yang terbenam dan merayap secara mendatar, berdaun dan berbunga, serta tumbuh akar). Rhizoma dan akar inilah yang menahan hempasan ombak dan arus pada tumbuhan lamun. Tujuan penelitian ini adalah untuk mengetahui jenis-jenis lamun,  kerapatan spesies, kerapatan relatif, frekuensi jenis, frekuensi relatif, penutupan jenis, penutupan relatif, indeks nilai penting, indeks keanekaragaman, indeks dominasi dan kondisi lingkungan perairan. Spesies lamun yang ditemukan diperairan Pantai Poopoh berjumlah 4 spesies yaitu, Thalassia hemprichii, Enhalus acoroides, Halodule pinifolia, Halophila ovalis. Jumlah tegakan spesies lamun dilokasi penelitian berkisar dari 53-965 individu, kerapatan spesies (17,67-321,67) individu/m2, kerapatan relatif (3,98-72,61%), frekuensi (0,045-0,90), frekuensi relatif (3,57-71,42%), penutupan jenis (0,41-7,31), penutupan relatif (1,04-78,12%), indeks nilai penting lamun diperairan Pantai Poopoh menunjukkan bahwa Thalassia hemprchii memiliki indeks nilai penting paling tinggi diantara ke 3 spesies lamun lainnya yakni (212,85%), indeks keanekaragaman (0,97), indeks dominasi spesies (0,11-0,44%/m²). Kondisi Lingkungan diperairan Pantai Poopoh yakni mamiliki kisaran suhu 28°C, salinitas 30‰, memiliki substrat pasir, pasir campur lumpur, berlumpur dan patahan karang. Kata Kunci: Pantai Poopoh, Lamun, Struktur Komunitas.
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.
Analisis Faktor-Faktor Yang Mempengaruhi Perilaku Kepatuhan Masyarakat Penerima Sertipikat Ptsl “Non PBB” Terhadap Pembayaran Pajak Bumi Dan Bangunan Di Kelurahan Girian Indah Tawaluyan, Marthen Hansen; Katiandago, Theodora Maulina; Kepel, Rene Charles
AGRI-SOSIOEKONOMI Vol. 19 No. 1 (2023): Agri-Sosioekonomi
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (255.194 KB) | DOI: 10.35791/agrsosek.v19i1.46894

Abstract

This research aims to analyzed the factors that affected the compliance behavior of the PTSL certificate recipients that have not who are not yet compliant in fulfilling their responsibility in paying property tax. This research was conducted in July till September 2022. The research method used in this research is Quantitative research. The results of the hypothesis by using the multiple regression linear formula showed that 1) The understanding regarding taxation does not significantly affected the compliance of PTSL certificate recipients in paying property tax in Girian Indah. Whether the people of Girian Indah understand about taxation does not causing meaningful impact for them to comply; 2) The awareness of paying taxes has a positive and significant impact to the PTSL certificate recipients compliance in paying property tax in Girian Indah. The higher the awareness of the taxpayer the higher the compliance of the people to pay their property tax; 3) Income has positive and significant effect to the compliance behavior of the PTSL certificate recipients in paying their property tax in Girian Indah. The higher the income of the taxpayer the higher the obedience of the people of Girian Indah to pay their property tax; 4) The quality of service has a positive and significant impact to the compliance behavior of the PTSL certificate recipients to pay their property tax in Girian Indah. The better the service provided by the tax officer, the higher the level of taxpayer compliance in paying property tax; 5) tax sanctions have a positive and significant effect on the compliance of PTSL certificate recipients in paying property tax in Girian Indah. The higher the tax sanctions given to taxpayers, the more obedient taxpayers will be in paying property tax.
Co-Authors Abdul Latief Abadi Adnan Sjaltout Wantasen Adnan Wantasen Alex D. Kambey Deiske A. Sumilat Gaspar D. Manu, Gaspar D. Gaspar Duhar Manu Grevo S Gerung Hadath, Deandra Starsha Bianca Haryani Sambali Hengki Djemie Walangitan Hengky J Sinjal Irwan Baino Jane Sulinda Tambas Joshian Nicolas William Schaduw Joudy R.R. Sangari, Joudy R.R. Kandati, Feibe R. S. Katiandago, Theodora Maulina Kliwon Hidayat Kondoy, Khiristin Ivone Fisye Kristianto Parera, Kristianto Laurence J. L Lumingas Lawrence J. L Lumingas Mamonto, Riswanto Mandagi, Stephanus V. Mantiri, Desy M. H Mantiri, Rose O.S.E Menajang, Febry S. I. Menajang, Febry Susana Ivone Muhammad Aris Nasprianto, - - Nasprianto, . Ockstan Jurike Kalesaran Onibala, Hernie Preisy Meicy Meriam Watung Rangan, Jety Kornela Resya Ika Firmansyah Rey Wahyudi Simbala Ridwan Lasabuda Rini M Wowor Rose O. S. E. Mantiri, Rose O. S. E. Rose O.S.E. Mantiri Rumengan, Anton Salaki, Meiske Sofie Silvester B Pratasik Sinjal, Hengk Stephanus V. Mandagi Suria Darwisito Suzanne L. Undap Tamrin Tamrin Tamrin Tassi, Maltonius Taufiq Abdullah Tawaluyan, Marthen Hansen Turangan, Septiara Vivanda O.J. Modaso Wahidin, Nurhalis Winda Mercedes Mingkid