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INDONESIA
JURNAL ILMIAH PLATAX
Published by Universitas Sam Ratulangi
ISSN : 23023589     EISSN : -     DOI : -
Core Subject : Social,
Environmental Science
Mencakup Penulisan yang berhubungan dengan pelaksanaan penelitian yang dilakukan secara mandiri, atau kelompok, dan berdasarkan Ruang Lingkup Pengelolaan Wilayah Pesisir, Konservasi, Ekowisata, dan Keanekaragaman Hayati Perairan.
Arjuna Subject : -
Articles 488 Documents
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Study of Welfare Level of Fisherman Community in Alo Village, Rainis District, Talaud Islands Regency Toesan, Fritwin; Manoppo, Lefrand; Kayadoe, Mariana E
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.44396

Abstract

Talaud Islands Regency is a maritime area with a sea area of around 37,800 km² (95.24%) and a land area of 1,251.02 km². The fishing community in Alo Village utilizes fishery resources as their main source of life. especially the coastal community of Alo village which is dominated by fishermen who are classified as labor fishermen or small fishermen. Fishing communities are small groups of people living in coastal areas whose main livelihood is utilizing the natural resources found in the ocean, whether in the form of fish, shrimp, seaweed, shellfish, coral reefs and other marine wealth. To determine the level of welfare of the fishing community in Alo Village. The type of research method used in this research is census research using descriptive analysis. So it can be concluded that the level of welfare of the fishing community in Alo Village, Rainis District, Talaud Islands District, with the number of respondents representing as many as 30 respondents was categorized as quite prosperous or moderate with a percentage of 66.67% and a score of 13. Keywords: Alo Village, Welfare, Income, Expenditures, education. Abstrak Kabupaten Kepulauan Talaud merupakan daerah bahari dengan luas lautnya sekitar 37.800 km² (95,24%) dan luas wilayah daratan 1.251,02 km². Masyarakat nelayan di Desa Alo memanfaatkan sumberdaya perikanan sebagai sumber kehidupan utama. khususnya masyarakat pesisir desa Alo yang di dominasi oleh nelayan yang tergolong nelayan buruh atau nelayan – nelayan kecil. Masyarakat nelayan yaitu kelompok kecil masyarakat yang tinggal di wilayah pesisir dengan mata pencaharian utama adalah memanfaatkan sumberdaya alam yang terdapat di dalam lautan, baik itu berupa ikan, udang, rumput laut, kerang- kerangan, terumbu karang dan hasil kekayaan laut lainnya. Untuk mengetahui tingkat kesejahteraan masyarakat nelayan Desa Alo. Jenis metode penelitian yang digunakan dalam penelitian ini adalah penelitian sensus dengan menggunakan analisis deskriptif. Maka dapat disimpulkan bahwa tingkat kesejahteraan masyarakat nelayan di Desa Alo Kecamatan Rainis Kebupatan Kepulauan Talaud, dengan jumlah responden yang mewakili sebanyak 30 responden dikategorikan cukup sejahtera atau sedang dengan persentase 66,67% dan nilai skor 13. Kata kunci: Desa Alo, Kesejahteraan, Pendapatan, Pengeluaran, pendidikan.
Analysis of fishing season for tuna (Thunnus spp.), little tuna (Euthynnus sp.) and skipjack (Katsuwonus pelamis) in FMA 716 Tuyu, Adel M.; Luasunaung, Alfret; Sumilat, Deiske A.; Manoppo, Lefran; Kaparang, Frangky E.; Mantiri, Rose O. S. E.; Warouw, Veibe
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.44633

Abstract

Economically important pelagic fish species in FMA 716 include skipjack (Katsuwonus pelamis), tuna (Thunnus spp.) and frigate tuna (Euthynnus sp.), these pelagic fish species are caught intensively. This study aims to provide information on the appropriate season for catching tuna, skipjack and tuna in FMA 716. The results of the study show the pattern of the tuna, skipjack and frigate tuna (TCT) fishing season based on the catches landed in PPS Bitung and PPP Tumumpa with fishing areas in FMA 716, i.e. the results vary every year but the peak of the fishing season occurs in the eastern transitional season. West - September, October and November. Peak fishing season for skipjack and tuna occurs three times and frigate tuna 2 times in 5 years. Keywords: catching season, Katsuwonus pelamis, Thunnus spp and Euthynnus sp,FMA 716 Abstrak: Jenis ikan pelagis ekonomis penting di WPP 716 antara lain adalah cakalang (Katsuwonus pelamis), tuna (Thunnus spp.) dan tongkol (Euthynnus sp.), jenis – jenis ikan pelagis tersebut ditangkap secara intensif. Penelitian ini bertujuan memberikan informasi musim yang tepat untuk melakukan penangkapan ikan tuna, cakalang dan tongkol di WPP 716. Hasil penelitian menujukan pola musim penangkapan ikan Tuna, Cakalang dan Tongkol (TCT) berdasarkan hasil tangkapan yang didaratkan di PPS Bitung dan PPP Tumumpa dengan wilayah penangkapan di WPP 716 yaitu hasilnya bervariasi setiap tahunnya tetapi yang terbanyak puncak musim penagkapan ikan terjadi pada musim masa peralihan timur-barat yaitu bulan September, Oktober dan November. Puncak musim penangkapan ikan cakalang dan tuna terjadi sebanyak tiga kali dan ikan tongkol 2 kali dalam 5 tahun. Kata kunci : Musim penangkapan ikan tuna, tongkol dan cakalang, WPP 716
Morphological characteristics of dolphinfish Coryphaena hippurus Linnaeus 1758 landed in Kalinaun Village, East of Likupang District, North Sulawesi Mantiri, Nicola R. K.; Tilaar, Ferdinand F.; Pratasik, Silvester B.; Sinjal, Henky; Lohoo, Anneke V.; Rondonuwu, Ari B.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.44916

Abstract

This study aimed to determine the size group of fish caught, compare the morphometric characteristics between sexes, and describe the meristic characteristics of the dolphinfish Coryphaena hippurus. This study used a descriptive method. The morphometric characteristics were measured using a ruler and tape at the accuracy of 1 mm and 5 m, respectively, while the meristic characteristics were obtained by counting the number of spines. This study found a total of 57 individuals of the dolphinfish that had a size range of 48–89 cm, the male from 48 to 95 cm, and the females from 49 to 84 cm, respectively. Four morphometric parameters of male and 2 parameters of female dolphinfish could be used to predict the total length. The dolphinfish also had 59 dorsal soft rays, 25 soft pelvic rays, 22 soft pectoral rays, 26 soft anal rays, and 48 hard caudal rays. Keywords: descriptive, morphometric, meristic, size. Abstrak Penelitian ini bertujuan untuk mengetahui kelompok ukuran ikan yang tertangkap, membandingkan karakteristik morfometrik antar jenis kelamin, dan mendeskripsikan karakteristik meristik ikan Lemadang Coryphaena hippurus. Penelitian ini menggunakan metode deskriptif. Karakteristik morfometrik diukur menggunakan penggaris dan meteran dengan ketelitian masing-masing 1 mm dan 5 m, sedangkan perhitungan meristik dilakukan dengan cara menghitung jari-jari sirip. Penelitian ini menemukan sebanyak 57 individu ikan Lemadang yang memiliki kisaran ukuran 48-89 cm, jantan 48-95 cm, dan betina berkisar 49-84 cm. Empat parameter morfometrik ikan Lemadang jantan dan 2 parameter ikan lemadang betina dapat digunakan untuk menduga panjang total. Ikan Lemadang juga memiliki 59 jari-jari lemah sirip punggung, 25 jari-jari lemah sirip perut, 22 jari-jari lemah sirip dada, 26 jari-jari lemah sirip dubur, dan 48 jari-jari keras sirip ekor. Kata kunci: deskriptif, morfometrik, meristik, ukuran.
Effects of Shochu Distillery By-products on the Energy Budget of Common Carp Mokolensang, Jeffrie Fredrik; Manu, Lusia; Manu, Gaspar D.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.45008

Abstract

The effects of Shochu distillery by-products (SDBP) were investigated by supplementary different level of SDBP to the basal diets for Japanese Common carp. To clarify the growth performances, energy budget equation was applied in this study. The feeding trial was conducted for 20 days by feeding the test diets containing SDBP at 0, 2,1 and 4.2%, respectively.　Based on the energy budget equation, the digestible energy (DE) requirements for the maximum growth ranged from 49.0 – 55.8 kcal/ind/d. The 4.2% SDBP diet yielded 6.5% higher growth energy but 7.1% lesser metabolic energy than the control. The energy budget on 4.2% SDBP diet accounted for 10.6% of feces (2.42 kcal/ind/d), 4.2% of non-fecal (0.93 kcal/ind/d), 39.4% of metabolic loss (9.03 kcal/ind/d) and 45.9% of growth (10.5 kcal/ind/d), respectively. Correspond to the control, non-fecal and metabolic energies were lower, in 4.2% SDBP resulting in the higher product energy. The above results indicate that SDBP can be utilized as a supplement ingredient for the growth promotion of carp feed, since it could provide a superior property for growth energy of fish by reduced energy of metabolic loss and non-fecal losses. Key words: Shochu distillery by-products; Energy requirements; Metabolic loss; Growth; Carp
Phytoplankton Community Structure in Seagrass Beds in Tiwoho Village, North Minahasa Regency Rimper, Abraham M.; Warouw, Veibe; Rimper, Joice R.T.S.L; Lintang, Rosita A.J.; Ompi, Medy; Pangkey, Henneke D.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.45232

Abstract

This research was carried out from May to July 2022. A sampling at the study site included seawater for the needs of plankton identification as well as the measurement of water nitrate & phosphate levels and measurement of physical and chemical parameters such as temperature, pH, salinity and dissolved oxygen which were carried out on an ongoing basis In situ (in the field). The technique for determining plankton sampling was carried out purposively, namely with certain considerations to obtain samples that represent the research location area. Plankton sampling was carried out horizontally using a plankton net. Sample bottles containing seawater were identified at the Marine Biology Laboratory, Faculty of Fisheries and Marine Sciences. The composition of the phytoplankton found in the Tiwoho seagrass bed ecosystem consists of three classes, namely the Bacillariophyceae, Dynophyceae, and Cyanophyceae classes, with 28 genera. The results of chopped phytoplankton are expressed in Cells/l. The qualitative determination of plankton is made up to the genus level. The composition of the phytoplankton found in the Tiwoho seagrass bed ecosystem consists of three classes, namely the Bacillariophyceae, Dynophyceae, and Cyanophyceae classes, with 28 genera. The results of calculating the abundance of phytoplankton in the Tiwoho seagrass ecosystem are in the range of 29 - 66 cells/l. The highest abundance was found at station two, namely 66 cells/l with 21 genera, then station three (65 cells/l) with 24 genera, and station one (29 cells/l) with a total of 23 genera. The diversity index of seagrass beds in Tiwoho waters is in the range of 1.9330 - 2.4083, which means that community stability is categorized as moderate. The uniformity index is in the range of 0.4614 - 0.7154, this means that the uniformity between species is relatively the same, or the difference is not striking. While the domination index is in the range of 0.1494 - 0.2404, it means that the condition of the community structure is stable, and there is no ecological pressure (stress) on biota. Keywords: Phytoplankton, Biological Index, Abundance, Environmental parameters Abstrak Penelitian ini dilaksanakan pada bulan Mei sampai bulan Juli 2022. Pengambilan sampel di lokasi penelitian meliputi air laut untuk kebutuhan identifikasi fitoplankton dan pengukuran kadar nitrat, fosfat perairan serta pengukuran parameter fisika kimia seperti suhu, pH, salinitas dan oksigen terlarut yang dilakukan secara In situ (di lapangan). Teknik penentuan pengambilan sampel plankton dilakukan secara purposif yaitu dengan pertimbangan tertentu untuk mendapatkan sampel yang mewakili area lokasi penelitian. Pengambilan sampel plankton dilakukan secara horisontal dengan menggunakan plankton net. Sampel plankton diberi pengawet formalin 4% dan diidentifikasi di laboratorium Biologi Kelautan Fakultas Perikanan dan Ilmu Kelautan. Komposisi fitoplankton yang dijumpai di ekosistem padang lamun Perairan Tiwoho terdiri dari tiga kelas yaitu kelas Bacillariophyceae, Dynophyceae, dan Cyanophyceae, dengan 28 genera. Hasil perhitungan kelimpahan fitoplankton di ekosistem padang lamun Perairan Tiwoho berada di kisaran 29 - 66 sel/l. Kelimpahan tertinggi ditemukan di stasiun dua (depan kampung) yaitu 66 sel/l dengan 21 genera, kemudian stasiun tiga (depan dermaga) yaitu 65 sel/l dengan 24 genera, dan stasiun satu (ujung kampung) sebanyak 29 sel/l dengan jumlah 23 genera. Indeks keanekaragaman ekosistem padang lamun Perairan Tiwoho berada pada kisaran 1,9330 - 2,4083, yang berarti stabilitas komunitas dikategorikan sedang. Indeks keseragaman yaitu pada kisaran 0,4614 - 0,7154, ini berarti keseragaman antar spesies relatif sama, atau perbedaannya tidak menyolok. Sedangkan indeks dominasi yaitu pada kisaran 0,1494 - 0,2404, berarti kondisi struktur komunitas dalam keadaan stabil, dan tidak terjadi tekanan ekologi (stress) terhadap biota. Kata kunci: Fitoplankton, Indeks Biologi, Kelimpahan, Parameter lingkungan
Condition of Coral Reefs in the Waters of Kalasey Satu Village, Minahasa Regency, North Sulawesi Pitoy, Israel; Rembet, Unstain N. W. J.; Rondonuwu, Ari B.; Wantasen, Adnan S.; Kambey, Alex D.; Manu, Gaspar; Tombokan, John L.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.45892

Abstract

The waters of Kalasey I Village have various resources and environmental services that are the potential to be utilized sustainably, such as tourism. The development activities in the tourism sector look so fast in this area with the establishment of several tourism infrastructures, such as diving centers, cottages, resorts,s and restaurants. These activities are thought to be able to affect the coral reef ecosystem. This study aims to determine the coral reef conditions, especially the reef flat, based on the percent cover of the live corals. Data collection was carried out at a depth of 3 meters with 3 replications using an Underwater Photo Transect (UPT) technique. Data obtained were analyzed using Coral Point Count with excel extension (CPCe) software. Based on the percent cover of live corals, the condition of coral reefs in the Kalasey 1 village waters was classified as poor with a coral cover percentage of 2.93%. Keywords: Tourism development, Underwater Photo Transect (UPT), percent cover, coral point count (CPCe) Abstrak Perairan di Desa Kalasey I memiliki berbagai sumberdaya serta jasa lingkungan yang berpotensi untuk dimanfaatkan secara berkesinambungan seperti potensi pariwisata. Kegiatan pembangunan di sektor pariwisata terlihat begitu pesat di wilayah ini dengan berdirinya sejumlah infrastruktur pariwisata seperti diving center, cottage, resort dan rumah makan, dimana aktivitas tersebut diduga dapat mempengaruhi ekosistem terumbu karang. Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang, khususnya rataan terumbu (reef flat), berdasarkan persentase tutupan karang di perairan Desa Kalasey I Kecamatan Mandolang Kabupaten Minahasa. Pengambilan data dilakukan pada kedalaman 3 meter dengan 3 ulangan, menggunakan teknik Underwater Photo Transect (UPT) dan data yang diperoleh dianalisis menggunakan software Coral Point Count with excel extension (CPCe). Diperoleh hasil kondisi terumbu karang tergolong dalam kategori miskin dengan persentase tutupan karang sebesar 2.93 %. Kata kunci: Pembangunan pariwiata, Underwater Photo Transect (UPT), persen tutupan, coral point count (CPCe)
Length-Weight Relationship and Reproduction of Spotcheek emperor Lethrinus rubrioperculatus Sato, 1978 at Napo Nain Likupang North Sulawesi Laura, Azhar; Kambey, Alex D.; Bataragoa, M.Sc, Dr. Ir. Nego E.; Pratasik, Silvester B.; Lohoo, Anneke V.; Kusen, Janny D.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.46348

Abstract

Spotcheek emperor L. rubrioperculatus lives in association with coral reefs, at a depth of 10-168 m. This species lives on sandy bottoms and along the outer reef slopes. The lemur fish L.rubriopercelatus is a protogynous hermaphrodite fish, there is a sex change from the female phase to the male phase. Research related to sea urchins in Likupang waters has never been carried out, even in general it is very limited in Indonesia. This study aims to analyze the length-weight relationship and reproductive aspects of spotcheek emperor at Napo Nain Likupang waters. Length-weight relationships are growth patterns and condition factors. Reproductive aspects are the level of gonadal maturity, gonadal maturity index, and fecundity. Fish samples were caught using two types of hand lines, hook number 10 with monofilament line number 90 and hook number 12 with monofilament line number 100. Sampling was carried out three times in May, June, and July 2022. The total samples were 80 individuals. consisting of 44 male individuals with a fork length range of 14.7-22.7 cm, 42 female individuals with a fork length range of 13.0-24.0 cm, and 2 individuals of transitional elephant fish, respectively 19.5 and 20.0 cm. Male length-weight relationship W= 0.2332L2.1642 (R2=0.7881) negative allometric growth pattern. Females W = 0.0868L2.505 (R2=0.9575) negative allometric growth pattern. The condition factor for male fish is 1.03 ± 0.22 and 0.99 ± 0.12 for females. The gonadal maturity was found in May for both males and females. Gonad Maturity Index for males ranged from 0.03-0.18 and for females 0.02-1.49. Fecundity ranged from 21.035-3.9497 with an average of 31.530 ± 5.929. The relationship between fecundity and length F=3152L0.7721 (R2=0.24340) Keywords: Growth pattern, Allometric, Gonad, Fecundity. Abstrak Ikan lencam L. rubrioperculatus hidup berasosiasi dengan terumbu karang, pada kedalaman 10-168 m. Spesies ini hidup di dasar berpasir dan di sepanjang lereng terumbu bagian luar. Ikan lencam L.rubriopercelatus adalah ikan hermaprodit protogini, terjadi perubahan kelamin dari fase betina ke fase jantan. Penelitian berkaitan ikan lencam di perairan Likupang belum pernah dilakukan, bahkan secara umum di Indonesia sangat terbatas. Penelitian ini bertujuan untuk menganalisis hubungan panjang-berat dan aspek reproduksi. Hubungan Panjang- berat meliputi pola pertumbuhan dan faktor kondisi di parairan Napo Nain Perairan Likupang. Aspek reproduksi meliputi tingkat kematangan gonad, indeks kematangan gonad dan fekunditas. Sampel ikan ditangkap dengan menggunakan dua jenis pancing ulur (hand line) mata pancing nomor 10 dengan tali monofilament nomor 90 dan mata pancing nomor 12 dengan tali monofilament nomor 100. Sampling dilakukan tiga kali pada bulan Mei, Juni dan Juli 2022. Jumlah sampel 80 individu terdiri atas terdiri dari 44 individu jantan dengan kisaran panjang garpu 14,7-22,7 cm, 42 individu betina dengan kisaran panjang garpu 13,0-24,0 cm, 2 individu ikan lencam transisi kelamin masing 19,5 dan 20,0 cm. Hubungan panjang-berat jantan W= 0,2332L2,1642 (R2=0,7881)pola pertumbuhan alometrik negatif. Betina W = 0,0868L2,505 (R2=0,9575) pola pertumbuhan alometrik negatif. Faktor kondisi jantan bernilai 1,03 ± 0,22 dan 0,99 ± 0,12 ikan betina. Tingkat kematangan gonad ikan yang siap memijah (TKG IV) ditemukan pad bulan Mei baik jantan maupun betina. Indeks Kematangan Gonad jantan berkisar antara 0,03-0,18 dan betina 0,02-1,49. Fekunditas berkisar antara 21.035-3.9497 dengan rata-rata 31.530 ± 5.929. Hubungan fekunditas dengan panjang F=3152L0,7721 (R2=0,24340) Kata kunci : Pola pertumbuhan, Allometrik, Gonad, Fekunditas
Gastropod Community An Vertical Distribution Pattern Of Littoraria Scabra (Linnaeus, 1758) In Mangrove Ecosystem, Tombariri District, Nort Sulawesi Bilaleya, Iman; Lalita, Jans; Mantiri, Rose O. S. E.; Kepel, Rene Ch.; Lumingas, Lawrence J.; Lohoo, Anneke V.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.46497

Abstract

The Coast water of Tombariri District is an area that has a main ecosystem like mangroves, seagrass, and reef. This research is to aim to know the species various, the structure of the gastropod community, and the vertical distribution pattern of Littoraria scabra in the mangrove ecosystem in Tombariri District, North Sulawesi. Process of gastropod sampling horizontally where transects were put horizontal coastline on every location including Mokupa, Elu, and Tambala. Every transect long has 65 m and also has every transect has 15 quadrats where every quadrat is one-meter square. Therefore, every transect has 15 quadrats, so a total of 45 quadrats. Every quadrant was put systematic method, that is, at terrestrial closing mangrove of 5 quadrats, middle mangrove of 5 quadrats, and coast close mangrove of 5 quadrats. Process of sampling particularly L.scabra where taking vertically, especially on microhabitats that is, roots, stems, branches, and leaves of mangroves. High measuring by meter unit, conducted from the ground where L.scabra found at mangrove until the top vegetation. Based on the result of observation on the identification of gastropod sampling found in the mangrove ecosystem, Tombariri District, North Sulawesi as many 235 of individuals consisting of 5 orders, 23 families, and 32 genera having 78 species. The density of species on every location Mokupa, Elu and Tambala, that is, (D) = 4.60, 5.47, and 5.60 in ind/m2, index of diversity,(H) = 2.54, 3.07, and 3.51 and index of dominance, ID = 0.04, 0.07 and 0.13. Keywords: Microhabitat, density, diversity, and dominance Abstrak Perairan pantai Kecamatan Tombariri merupakan daerah yang memiliki ekosistim utama pesisir seperti mangrove, lamun, dan terumbu karang. Penelitian ini bertujuan untuk mengetahui jenis-jenis, struktur komunitas gastropoda dan pola distribusi vertikal spesies Littoraria scabra di ekosistem mangrove Kecamatan Tombariri, Sulawesi Utara. Proses pengambilan sampel gastropoda secara horizontal, di mana transek ditempatkan sejajar garis pantai pada setiap lokasi yakni di Mokupa, Elu, dan Tambala. Panjang setiap transek 65 m dan setiap transek memiliki 15 kuadrat di mana kuadrat berukuran 1 x 1 m. Setiap transek punya 15 kuadrat sehingga total kuadrat seluruh transek adalah 45 kuadrat. Penempatan kuadrat menggunakan metode sistematik yaitu di bagian darat 5 kuadrat, pertengahan 5 kuadrat dan mangrove pinggir laut 5 kuadrat. Proses pengambilan sampel secara vertikal khusus Littoraria scabra, di mikrohabitat akar, batang, cabang dan daun mangrove,Sementara pengambilan sampel L.scabra diukur ketinggian di mana spesies Littoraria scabra ditemukan ldi pohon mangrove dengan menggunakan meteran, dimulai dari dasar sampai ke ujung pohon mangrove. Berdasarkan hasil pengamatan dan identifikasi sampel gastropoda yang ditemukan di ekosistem mangrove Kecamatan Tombariri, Sulawesi Utara ditemukan sebanyak 235 individu yang terbagi ke dalam 5 ordo, 23 famili dan 32 genera dari 78 spesies. Kepadatan Jenis pada masing-masing lokasi = 4,60, 5,47, dan 5,60 ind/m2. Keanekaragaman H’= 2,54, 3,07, dan 3,51. Dominansi C= 0,04, 0,07, dan 0,13. Kata Kunci : Mikrohabitat, Kepadatan, Keanekaragaman, Dominansi.
Adaptation of "New Normal" to Marine Ecotourism Activities and Their Impact on the Welfare of Coastal Communities Andaki , Jardie A.; Aling, Djuwita R.R.; Rantung, Steelma V.
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.46413

Abstract

Abstract This study aims to find out how the adaptation to the new normal period in the marine ecotourism business and its influence on coastal communities in West Likupang District. The research was conducted in West Likupang District in 4 villages (Bahoi, Bulutui, Tarabitan, and Jayakarsa). The survey method was used to collect primary and secondary data. Quantitative data obtained in this study were obtained from respondent questionnaire data which were processed using the Microsoft Excel 2010 program. The data were also processed by cross-tabulation and statistically analyzed using the statistical t test using SPSS 16.0 For Windows software. The t statistical test (t-test) is used to test differences in ecotourism conditions before the pandemic, the Covid-19 pandemic, and the new normal period. The results of data analysis using the t-test statistic showed a significant difference in the boat transportation business (P<0.05) with a decrease of 75%; homestay (P<0.05) with a decrease of 93%; a number of visits (P<0.05) with a decrease of 63%; and culinary (P<0.05) with a decrease of 67%. A qualitative assessment shows that the Covid-19 pandemic has caused a reduction in the frequency of work from the community in the form of tour guides, dive guides, fishing activity guides, parking attendants, motorcycle taxi drivers, bathroom guards, and ticket guards. A further implication of reduced visits is in the form of cessation of services from several jobs so that workers in the ecotourism sector adapt by diversifying jobs to be able to support their families and themselves.   Keywords: covid-19, ecotourism, new normal, community welfare  Abstrak Penelitian ini bertujuan untuk mengetahui bagaimana adaptasi pada masa new normal pada usaha ekowisata bahari dan pengaruhnya pada masyarakat pesisir di Kecamatan Likupang Barat. Penelitian dilaksanakan di Kecamatan Likupang Barat pada 4 (empat) desa (Bahoi, Bulutui, Tarabitan, dan Jayakarsa). Metode survey digunakan untuk pengumpulan data primer dan sekunder. Data kuantitatif yang diperoleh pada penelitian ini diperoleh merupakan data hasil kuesioner responden yang diolah dengan menggunakan program microsoft excel 2010. Data juga diolah dengan tabulasi silang dan dianalis secara statistik dengan uji statistik t menggunakan software SPSS 16.0 For Windows. Uji statistik t (t test) ini digunakan untuk menguji perbedaan kondisi ekowisata sebelum masa pandemi, masa pandemi covid-19, dan masa new normal. Hasil analisis data dengan statistik uji t menunjukkan perbedaan signifikan pada usaha transportasi perahu (P<0,05) dengan penurunan sebesar 75%; home stay (P<0,05) dengan penurunan sebesar 93%; jumlah kunjungan (P<0,05) dengan penurunan sebesar 63%; dan kuliner (P<0,05) dengan penurunan sebesar 67%. Penilaian secara kualitatif menunjukkan masa pandemic covid-19 menyebabkan berkurangnya frekuensi pekerjaan dari masyarakat berupa tour guide, dive guide, pemandu kegiatan pemancingan, tukang parkir, tukang ojek, penjaga kamar mandi, dan penjaga karcis. Implikasi lebih jauh dari berkurang kunjungan berupa penghentian layanan jasa dari beberapa pekerjaan sehingga masyarakat pekerja di bidang ekowisata beradaptasi dengan melakukan diversifikasi pekerjaan untuk dapat menafkahi keluarga dan diri sendiri. Kata kunci: covid-19, ekowisata, normal baru, kesejahteraan masyarakat
Macroalgae Community Structure in West Coastal Waters of Kelabat Outer Bay, West Bangka District Sapitri; Anggraeni; Akhrianti, Irma
Jurnal Ilmiah Platax Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.45659

Abstract

The waters of the Bangka Belitung Islands, including the small islands around them, are areas with great potential for macroalgal growth. One of these areas is the waters of Kelabat Bay. Research on macroalgae in Kelabat Bay has previously been carried out, but the data obtained was not complete, so further research is needed. The purpose of this study is to identify the types of macroalgae and analyze the macroalgae community structure, as well as the relationship between physicochemical factors in the waters and the macroalgae community structure in the est coastal waters of Kelabat Outer Bay, West Bangka Districts. The location of the research station was determined by the purposive sampling method. The macroalgae sampling method is a systematic, random method of spreading line transects. Based on research results, the most abundant macroalgae found in the western coastal waters of Kelabat Outer Bay are from the Phaeophyta division, totaling 8 species with a total of 1,637 individuals; the Chlorophyta division, consisting of 4 species with a total of 692 individuals; and the Rhodophyta division, composed of 2 species with a total of 140 individuals. Which has the highest number of individuals, is Sargassum muticum, which amounted to 697 individuals. The diversity index of macroalgae in the west coastal waters of Kelabat Outer Bay is in the medium category (1,69–2,05), the evenness index is high (0,77–0,84), and the dominance index is low (0,16–0,24). Physico-chemical parameters of the waters that affect the macroalgal community structure based on principal component analysis include current velocity, salinity, and brightness. Keywords: macroalgae; community structure; Kelabat Bay Abstrak Perairan Kepulauan Bangka Belitung dan termasuk pulau-pulau kecil di sekitarnya merupakan daerah yang sangat potensial bagi pertumbuhan makroalga. Salah satu daerah tersebut adalah Perairan Teluk Kelabat. Penelitian tentang makroalga di Teluk Kelabat sebelumnya pernah dilakukan, tetapi data yang diperoleh belum lengkap sehingga perlu dilakukan penelitian ulang. Penelitian ini bertujuan untuk mengidentifikasi jenis-jenis makroalga dan menganalisis struktur komunitas makroalga serta hubungan faktor fisika-kimia perairan terhadap struktur komunitas makroalga yang terdapat di perairan pesisir barat Teluk Kelabat Luar, Kabupaten Bangka Barat. Lokasi stasiun penelitian ditentukan dengan metode purposive sampling. Metode pengambilan sampel makroalga adalah metode acak sistematis dengan membentangkan transek garis. Berdasarkan hasil penelitian, makroalga yang paling banyak ditemukan di perairan pesisir barat Teluk Kelabat Luar adalah dari divisi Phaeophyta sebanyak 8 spesies dengan total individu sebanyak 1.637, divisi Chlorophyta sebanyak 4 spesies dengan total individu sebanyak 692 dan divisi Rhodophyta sebanyak 2 spesies dengan total individu sebanyak 140. Jenis makroalga yang memiliki jumlah individu terbanyak adalah Sargassum muticum yang berjumlah 697 individu. Indeks keanekaragaman makroalga di perairan pesisir barat Teluk Kelabat Luar termasuk dalam kategori sedang (1,69–2,05), indeks kemerataan tergolong tinggi (0,77–0,84), dan indeks dominansi tergolong rendah (0,16–0,24). Parameter fisika-kimia perairan yang berpengaruh terhadap struktur komunitas makroalga berdasarkan analisis komponen utama meliputi kecepatan arus, salinitas dan kecerahan. Kata kunci: makroalga; struktur komunitas; Teluk Kelabat.

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