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Kerapatan dan Keanekaragaman serta Kondisi Terkini Ekosistem Lamun di Perairan Pulau Ponelo Zulkifli Ismail; Faizal Kasim; Citra Panigoro
The NIKe Journal VOLUME 11 ISSUE 3 | SEPTEMBER 2023
Publisher : Faculty of Fishery and Marine Sciences - Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/nj.v11i3.21984

Abstract

This research aims to determine the density, diversity and dominance index as well as the current condition of the seagrass ecosystem in Ponelo Village, Ponelo Islands District, North Gorontalo Regency. This research was carried out from March to August 2019. Samples were collected using the line transect method in a systematic manner using 1x1 meter quadrants. All research study areas are divided into 3 stations based on the presence of seagrass. Data analysis includes density, diversity and dominance index as well as current conditions. There were 4 types of seagrass found at the research location from 2 families, namely Enhalus acroides and Cymodocea rotundata from the Potomogetonaceae family and Halophila ovalis and Thalassia hemprichii from the Hydrocharitaceae family. The type of seagrass that has the highest density is Cymodocea rotundata and the type of seagrass that has the lowest density is Halophila ovalis. Seagrass diversity was obtained at stations 1 and 2 with a value of 0.98-0.91 with low status, while station 3 obtained a value of 1.38 with medium status. The Dominance Index results from stations 1, 2, and 3 obtained a value of 0.25-0.50 in the low category. The condition of the seagrass beds is based on density values, namely that the conditions at stations 1, 2 and 3 are rather dense and sparse.
Pertumbuhan Daun dan Tingkat Kelangsungan Hidup Lamun Enhalus acroides dengan Metode Transplantasi TERFs di Desa Otiola Kecamatan Ponelo Kepulauan Kabupaten Gorontalo Utara Ledy Damiti; Faizal Kasim; Sri Nuryatin Hamzah
The NIKe Journal VOLUME 11 ISSUE 1 | MARCH 2023
Publisher : Faculty of Fishery and Marine Sciences - Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/nj.v11i1.1285

Abstract

Penelitian ini bertujuan menganalisis laju pertumbuhan daun dan tingkat kelangsungan hidup lamun Enhalus acroides dengan metode transplantasi TERFs di Kabupaten Gorontalo Utara. Pengamatan terhadap kedua parameter ditegakkan pada 6 buah sub stasiun dari 2 stasiun penelitian berlokasi di Desa Otiola, Kecamatan Ponelo Kepulauan, menggunakan media transplantasi besi. Hasil analisis menunjukkan bahwa pertumbuhan daun lamun sangat baik/optimal ditemukan pada lokasi substrat berpasir (stasiun 1), sebaliknya, pertumbuhan pada substrat berlumpur (stasiun2) tercatat ditemukandaun lamun yang sangat buruk. Masing-masing rerata pertumbuhan daun di kedua stasiun yaitu 8.37 mm/minggu (stasiun 1) dan 0.96 mm/minggu (stasiun 2). Demikian pula, hasil analisis rerata tingkat kelangsungan hidup lamun selama 8 minggu di kedua stasiun tercatat masing-masing sebesar 84.7% (stasiun 1) sebesar 29.3% (stasiun 2). Beberapa hal yang diduga menjadi pembeda laju pertumbuhan daun lamun yang baik/optimal dan tingkat kelangsungan hidup anakan lamun yang tinggi pada stasiun 1 adalah kondisi substrat dan kecerahan perairan.
Dampak Alih Fungsi Ekosistem Mangrove Terhadap Sosial Ekonomi Masyarakat di Desa Molamahu Kabupaten Pohuwato Wirnawati .Ahaya; Faizal Kasim; Miftahul Khair Kadim
The NIKe Journal VOLUME 10 ISSUE 4 | DECEMBER 2022
Publisher : Faculty of Fishery and Marine Sciences - Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/nj.v10i4.1279

Abstract

Penelitian ini bertujuan untuk mengetahui faktor pendorong terjadinya alih fungsi ekosistem mangrove dan dampak alih fungsi ekosistem mangrove terhadap sosial ekonomi masyarakat di Desa Molamahu Kecamatan Paguat Kabupaten Pohuwato. Metode pengambilan sampel menggunakan metode purposive sampling dan penentuan jumlah responden menggunakan rumus slovin, sehingga di peroleh 89 responden.Teknik analisis data dalam penelitian ini adalah analisis data secara kualitatif.Hasil penelitian menunjukkan bahwa perekonomian menjadi salah satu faktor utama yang menyebabkan masyarakat di Desa Molamahu khususnya masyarakat yang tinggal didaerah kawasan hutan mangrove, setuju bahwa lahan mangrove di alih fungsikan menjadi tambak.Dampak sosial dan ekonomi alih fungsi ekosistem mangrove bagi masyarakat di Desa Molamahu yakni perubahan strata sosial, dan pendapatan meningkat.
Estimation of Fishing Mortality Rate and Exploitation Status of Yellowstrip Scad (Selaroides leptolepis) in Tomini Bay using Von Bertalanffy Growth Model Approach Nuralim Pasisingi; Faizal Kasim; Zulkifli Arsalam MoO
Jurnal Ilmiah Perikanan dan Kelautan Vol. 13 No. 2 (2021): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v13i2.27465

Abstract

Highlight ResearchThe fishing area of S. leptolepis in this study was confirmed to be located in Tomini BayThe fish samples were gathered randomly from fishers' catch using purse seinesThe growth curve for the male and female fish data were both plotted following the trend of the Von Bertalanffy equationThis study estimates the growth parameters, mortality, and exploitation rates of the male and female fish separately.AbstractComprehensive data is required for implementing sustainable fisheries management. Population dynamic and stock assessment aspects of Selaroides leptolepis species in Tomini Bay have not been entirely reported. This study aimed to determine the fishing mortality rate and exploitation status of S. leptolepis in Tomini Bay by calculating Von Bertalanffy growth model parameters (L∞, K, t0) then plotting them into Pauly's empirical equation. The sampling was conducted monthly from April to September 2020 at Gorontalo City Fishing Port. Samples were collected randomly from five commercial fishing vessels shortly after the fishermen landed their catch at the fishing port. All fish samples were confirmed to be obtained by the fishermen from Tomini waters. The growth parameters of the samples were analyzed using FiSAT II based on Von Bertalanffy mathematical model. While the mortality and exploitation values were calculated manually using Pauly's equation. The study showed that the growth parameter values of S. leptolepis in Tomini Bay were 245.47 mm, 0.49/year, and -3.04/year for males, while 227.80 mm, 0.63/year, and -2.72/year for females separately for L∞, K, and t0. The total, natural, and fishing mortality rates were 3.06/year, 0.61/year, and 2.45/year for males and 0.99/year, 0.74/year, and 0.25/year for females. The analysis results showed that the female's natural mortality (M) was higher than the male. In contrast, the fishing mortality (F) and total mortality (Z) of male fish exceed the female. The exploitation value of males (E=0.80) was greater than that of females (E=0.26).
IDENTIFIKASI MORFOLOGI DAN ANALISIS TRUSS MORFOMETRIK Selar crumenophthalmus (Bloch, 1793) DI TELUK TOMINI Pasisingi, Nuralim; Bilale, Mohamad Sahril; Mokoagow, Ogin Sutanto; Kasim, Faizal
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 19, No 4 (2023): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.19.4.192-198

Abstract

Selar termasuk komoditas ikan laut yang bernilai ekonomis karena permintaan pasar yang tinggi dan didukung oleh ketersediaan populasi di alam sepanjang tahun.  Truss morfometrik ikan merupakan salah satu karakter terukur yang umum diterapkan dalam studi morfologi ikan sebagai potensi pembeda seksual ikan pada spesies tertentu. Tujuan penelitian ini adalah menyajikan informasi mengenai morfologi, menentukan rasio truss morfometrik terhadap panjang tubuh total yang dapat dijadikan karakter pembeda seksual, serta membandingkan pola pertumbuhan Selar crumenophthalmus jantan dan betina. Jumlah sampel sebanyak 100 ekor dikumpulkan secara random di Tempat Pendaratan Ikan Tenda Kota Gorontalo selama dua hari penangkapan pada bulan Juni 2022. Hasil pengamatan morfologi menunjukkan bahwa bentuk tubuh S. crumenophthalmus adalah kompres dengan tipe sisik sikloid. Bagian dorsal tubuh berwarna biru gelap kehijauan, bagian ventral berwarna silver cenderung putih, terdapat area tipis berwarna kuning membujur dari batas operkulum sampai batang ekor pada sisi lateral tubuh yang terletak di atas linea lateralis, sirip kaudal berbentuk cagak dan simetris, memiliki rumus sirip DIX, 24-27 dan AIII, 21-23. Terdapat 14 truss morfometrik yang dapat dijadikan sebagai ciri pembeda S. crumenopthalmus jantan dan betina yaitu 1 karakter pada bagian kepala (A4), 6 karakter pada tubuh bagian anterior (B1, B2, B4, B5, B6, B9), 3 karakter pada tubuh bagian posterior (C2, C5, C6), dan 4 karakter pada bagian ekor (D1, D2, D3, D5). Adapun pola pertumbuhan spesies jantan dan betina pada sampel riset ini sama-sama bersifat allometrik positif. Selar is a marine fish commodity that has economic value due to high market demand and is supported by the availability of natural populations throughout the year. Fish morphometric truss is one of the measurable characteristics that is commonly applied in the study of fish morphology as a potential sexual differentiation of fish in certain species. The aim of this research is to present information regarding morphology, determine the ratio of morphometric truss to total body length which can be used as a sexual distinguishing character, and compare the growth patterns of male and female Selar crumenophthalmus. A total of 100 samples were collected randomly at the Gorontalo City Tent Fish Landing Site during two days of fishing in June 2022. The results of morphological observations showed that the body shape of S. crumenophthalmus was compressed with cycloid scale type. The dorsal part of the body is dark greenish blue, the ventral part is silver, and tends to be white, and there is a thin yellow area stretching from the border of the operculum to the caudal peduncle on the lateral side of the body which is located above the linea lateralis, the caudal fin is forked and symmetrical, has the fin formula DIX, 24-27 and AIII, 21-23. There are 14 morphometric trusses that can be used as distinguishing characteristics of male and female S. crumenopthalmus, namely 1 character on the head (A4), 6 characters on the anterior body (B1, B2, B4, B5, B6, B9), 3 characters on the body the posterior (C2, C5, C6), and 4 characters in the tail (D1, D2, D3, D5). The growth patterns of male and female species in this research sample were both positive allometric.
CHECKLIST OF SEA CUCUMBERS SPECIES FROM BILUHU TIMUR WATERS, TOMINI BAY, GORONTALO, INDONESIA, BASED ON THEIR OCCURRENCE ON NEW MOON AND FULL MOON OF LUNAR PHASE Kasim, Faizal; Pasisingi, Nuralim; Liputo, Resky
Jurnal Ilmu Kelautan SPERMONDE VOLUME 10 NOMOR 2, 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v10i2.34890

Abstract

This study presents a comprehensive checklist of sea cucumber species found in Biluhu Timur waters, Tomini Bay, Gorontalo, Indonesia, across the new moon and full moon lunar phases. The survey identified eight species across five genera, including Actinopyga miliaris, A. mauritiana, Holothuria scabra, and H. leucospilota, noting significant distribution patterns influenced by lunar cycles and different biomes at three stations. Actinopyga miliaris and A. mauritiana, both classified as Vulnerable, were more active in the seagrass biome of Station I during the full moon. H. leucospilota, classified as Least Concern, was highly prevalent in the sandy substrate biome of Station II during the new moon, indicating a strong ecological association with that habitat. Stichopus horrens, classified as Data Deficient, showed notable activity in the coral reef biome of Station III. Environmental parameters such as water temperature, salinity, and pH were measured at each station to understand the conditions influencing these species. This study highlights the importance of lunar phases, biomes, and environmental variables on sea cucumber distribution. The findings underscore the need for conservation efforts that consider these factors to protect species vulnerable to overfishing and habitat degradation. Further research should include genetic analysis and expanded temporal and spatial scales to develop effective conservation strategies and sustainable management practices
Estimation of Population Dynamics Parameters of Selar crumenophthalmus Landed at Gorontalo Tenda Fish Landing Base: Pendugaan Parameter Dinamika Populasi Ikan Selar crumenophthalmus yang Didaratkan di Pangkalan Pendaratan Ikan Tenda Gorontalo Pasisingi, Nuralim; Mokoagow, Ogyn Sutanto; Kasim, Faizal
Habitus Aquatica Vol 5 No 2 (2024): Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management
Publisher : Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/HAJ.5.2.67

Abstract

Salah satu sumber daya ikan pelagis di Perairan Laut Gorontalo yang diminati untuk dijadikan ikan konsumsi sehari-hari oleh masyarakat adalah ikan Selar crumenophthalmus atau yang umum dinamkan sebagai ikan selar bentong. Penelitian ini bertujuan untuk menentukan kelompok umur, pertumbuhan, mortalitas, dan yield per recruitment (Y/R) ikan Selar crumenophthalmus yang didaratkan di Pangkalan Pendaratan Ikan (PPI) Tenda Kota Gorontalo. Total sampel ikan sebanyak 1020 ekor dikumpulkan secara acak dari nelayan yang mendaratkan hasil tangkapannya di PPI Kota Gorontalo. Hasil penelitian berdasarkan pengambilan sampel yang dilakukan setiap dua minggu sejak Maret hingga Mei 2023 menunjukan bahwa terdapat tiga kelompok umur ikan S. crumenophthalmus. Persentase kelompok umur I, II, dan III masing-masing adalah 39.90%, 55.30%, dan 4.30%. Panjang asimptot ikan L∞ = 269.4 mm, laju pertumbuhan ikan K = 0.55 dan umur teoritis ikan t0 = -0.1616 tahun. Nilai mortalitas alami M = 0.48 yang lebih kecil daripada mortalitas penangkapan F = 0.85, mortalitas total Z = 1.33 per tahun dan total laju eksploitasi E = 0.64 per tahun. Nilai Y/R sebesar 0.106 gram/recruitment dengan tingkat eksploitasi sebesar 0.608 per tahun.
Indeks Trofik-Saprobik pada Bivalvia Sebagai Indikator Status Pencemaran di Perairan Pesisir Desa Lamu, Kabupaten Gorontalo: Trophic-Saprobic Index Based on Bivalves Diversity as an Indicator of Pollution Status in the Coastal Waters of Lamu Village, Gorontalo Regency Wonopati, Cindy Trisnawaty; Kadim, Miftahul Khair; Panigoro, Citra; Kasim, Faizal; Pasisingi, Nuralim
JFMR (Journal of Fisheries and Marine Research) Vol. 8 No. 3 (2024): JFMR on November
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2024.008.03.7

Abstract

Perairan Pantai Desa Lamu merupakan salah satu pantai potensial di Teluk Tomini karena memiliki keanekaragaman hayati penting. Aktifitas antropogenik disekitar perairan pantai berpotensi memberikan dampak pencemaran kualitas air. Penelitian ini bertujuan untuk menilai status pencemaran di Perairan Pesisir Desa Lamu Kabupaten Gorontalo menggunakan indeks trofik-saprobik berdasarkan keanekaragaman bivalvia. Penelitian dilakukan pada bulan Februari-Mei 2024. Penelitian ini menggunakan metode purposive random sampling dengan menggunakan kuadran yang berukuran 1×1 meter. Hasil penelitian menunjukkan bahwa sebanyak 16 spesies bivalvia yang mewakili 12 famili ditemukan di lokasi penelitian, dimana Caloarca tenella menjadi spesies yang paling melimpah. Berdasarkan keanekaragaman Bivalvia yang ditemukan, spesies penyusun saprobik tersusun atas 3 kelompok yaitu Polisaprobik, ꞵ Mesosaprobik, dan Oligosaprobik. Nilai SI berkisar antara -0,50 hingga 1,36 dan TSI berkisar antara 1 hingga 1,96 yang menunjukkan bahwa perairan Desa Lamu berada pada kondisi tercemar ringan sampai berat.   The coastal waters of Lamu Village represent one of the potential beaches in Tomini Bay due to their significant biodiversity. Anthropogenic activities in the surrounding coastal areas have the potential to impact water quality through pollution. This study aims to assess the pollution status in the coastal waters of Lamu Village, Gorontalo Regency, using the trophic-saprobic index based on bivalves diversity. The research was conducted from February to May 2024. The study employed a purposive random sampling method using 1×1 meter quadrants. The results showed that 16 bivalvia species representing 12 families were found at the research site, with Caloarca tenella being the most abundant species. Based on the bivalves diversity found, the saprobic species were composed of 3 groups: Polysaprobic, ꞵ Mesosaprobic, and Oligosaprobic. The SI values ranged from -0.50 to 1.36, and TSI values ranged from 1 to 1.96, indicating that the waters of Lamu Village are in a state of light to severe pollution.
DOMINANSI DAN POLA ZONASI MANGROVE DI DESA PENTADU BARAT TELUK TOMINI GORONTALO Rahim, Ditya Nanda; Kasim, Faizal; Nane, La
Coastal and Ocean Journal (COJ) Vol 8 No 1 (2024): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v8i1.54743

Abstract

The purpose of this study is to discover the composition, dominance index value, and zoning pattern of mangrove plant in Pentadu Barat Village, Tilamuta Subdistrict, Boalemo Regency. This study was conducted from January to March 2023. The sampling method is purposive sampling using 10 × 10 cm linear transect for tree, 5 × 5 cm linear transect for saplings, and 2.5 × 2.5 cm linear transect for seedlings. The mangrove sample is descriptively and quantitatively analysed by identifying the species to calculate the type compositions and dominance index using Microsoft Excel. The result of the study reveals 12 species of 4 families from 3 study location (Avicennia alba, Avicennia officinalis, Bruguiera cylindrical, Bruguiera gymnorrhiza, Bruguiera parviflora, Ceriops decandraCeriops tagal, Rhizophora apiculata, Rhizophora mucronata, Rhizophora stylosa, Sonneratia alba and Xylocarpus granatum). The type composition value was 35% from Rhizophora mucronata. The average dominance index value was 0.0174. The zoning pattern was mixedbecause it grows mixed with each other among several species.
Kepadatan Sampah Makro pada Ekosistem Lamun di Perairan Teluk Tomini, Gorontalo: Ancaman terhadap Keberlanjutan Lingkungan Pesisir Sentia, Sentia; Hamzah, Sri Nuryatin; Kasim, Faizal; Umar, Olpin Y
The NIKe Journal VOLUME 12 ISSUE 3 | SEPTEMBER 2024
Publisher : Faculty of Fishery and Marine Sciences - Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/nj.v12i3.29078

Abstract

Sampah di wilayah pesisir dan laut merupakan permasalahan lingkungan yang kompleks, terutama di daerah yang berdekatan dengan pesisir. Salah satu ekosistem yang terdampak adalah ekosistem lamun, yang menghadapi ancaman serius akibat keberadaan sampah laut, khususnya sampah makro. Penelitian ini bertujuan untuk menganalisis tingkat kepadatan sampah makro pada ekosistem lamun. Penelitian dilaksanakan pada bulan Januari 2024 di perairan Teluk Tomini, Desa Taula'a, Kecamatan Bilato, Kabupaten Gorontalo. Metode pengambilan sampah makro menggunakan metode line transect dengan panjang transek 100 meter dan lebar pengamatan masing-masing 2 meter ke kanan dan ke kiri dari garis transek. Data dianalisis menggunakan metode analisis kepadatan sampah makro. Hasil penelitian menunjukkan adanya delapan jenis sampah makro yang ditemukan, yaitu plastik, busa plastik, kain, kaca dan keramik, logam, kertas dan kardus, kayu, serta bahan lainnya. Analisis kepadatan sampah menunjukkan bahwa Stasiun 1 dan Stasiun 2 didominasi oleh sampah plastik, dengan nilai kepadatan masing-masing sebesar 0,018 item/m² dan 0,093 item/m². Sementara itu, Stasiun 3 didominasi oleh sampah kayu, dengan nilai kepadatan sebesar 0,008 item/m². Temuan ini mengindikasikan bahwa plastik merupakan jenis sampah yang paling mendominasi di wilayah studi, terutama di dua stasiun awal. Penelitian ini memberikan gambaran awal tentang distribusi sampah makro di ekosistem lamun, yang dapat menjadi dasar bagi pengelolaan lingkungan pesisir yang lebih baik.