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Boneka, Farnis B. Boneka
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Environmental Science

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Attachment Of Macrobenthos Larvae To Organic And Non-Organic Substrates Saragih, Hans S. R. P.; Ompi, Medy; Kaligis, Erly Yosef; Boneka, Farnis B. Boneka; Warouw, Veibe; Paransa, Darus Sa’adah Johanis
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.v12i1.52205

Abstract

The objectives of this study are 1) to Identify the specimen of macrobenthos attached to the substrate provided in 2 locations. 2) to determine the type of substrate attached by the larvae at both sites.  3) to determine the density of Macrobenthos attached to the substrate provided at 2 sites. A plywood plate had 16 holes with a diameter of 1 cm each that had been randomly filled with organic substrates, namely coconut fibers, palm fibers, shells with 'bysus' threads, and non-organic substrates in the form of plastic ropes. Each substrate has four replicates.  The plywood plate with 3 replicates was placed in each station.  The plate was removed and taken to the laboratory after 1 month. The identification up to family, genus, and species as well as the density of each species were applied.  The results showed that not only the larvae of Septifer bilocularis attached to organic and non-organic substrates, but six species of larvae were also identified. The sizes of new settler macrobenthos from 2 mm to 1 cm attached on organic and non-organic substrates were identified. The density of new settlers species attached to substrates varied from 0.03 – 0.5 individuals/cm2.  The new settlers identified 7 species in Tiwoho and 3 species in Malalayang.    Keywords: Settlement, Substrate, Tiwoho Coast, Malalayang Coas. Abstrak Tujuan dari penelitian ini adalah 1) Mengidentifikasi jenis-jenis  makrobenthos yang menempel pada substrat yang disediakan di 2 lokasi. 2) Mengidentifikasi jenis substrat sebagai tempat penempelan larva macrobenthos di  kedua lokasi, dan 3) Menentukan kepadatan jenis Makrobenthos  pada substrat yang disediakan di 2 lokasi. Triplek (plate) memiliki 16 lubang dengan ukuran diameter masing-masing 1 cm yang telah diisi secara acak dengan substrat organik yaitu serabut kelapa, serabut ijuk, cangkang ber ‘byssus’, serta substrat non organik berupa tali plastik. Masing-masing substrat ini memiliki 4 ulangan.  Selanjutnya, plate, masing-masing dengan 3 ulangan ditempatkan di setiap intertidal, Towoho dan Malalayang.  Plate diangkat setelah 1 bulan, yang dibawah ke laboratorium untuk foto dan diidentifikasi baik di tingkat jenis, genus, ataupun family.  Hasil penelitian menunjukkan bahwa tidak hanya larva kerang Septifer bilocularis (Linnaeus, 1758), yang menempel pada substrat organik dan non organik, tetapi ditemukan larva macrobenthos lainnya, yaitu 2 jenis dari Cerithum egenum (Gould, 1849), dan Calcarina defranci d'Orbigny, 1826, 2 family/genus, yaitu: Canthocamptidae dan Portunidae, dan 2 klass, yaitu : Polychaeta dan Demospongae.  Teridentifikasi jenis larva makro benthos yang baru menempel pada substrat substrat organik dan non-organik dengan ukuran yang bervariasi, yaitu dari 2 mm – 1 cm. Kepadatan jenis macrobenthos yang baru menempel adalah dari 0.03 – 0.5 individu/cm2.  Ada 7 jenis teridentifkasi di lokasi Tiwoho, dan 3 jenis teridentifkasi di Malalayang Kata kunci: Penempelan, Substrat, Pesisir Tiwoho, Pesisir Malalayang  
Mollusks attached to natural mangrove roots and silvofisheries in Nabire Papua: to what extent are they different Maitindom, Frits A; Mamangkey, Gustaf; Boneka, Farnis B. Boneka; Lasut, Markus T.; Mantiri, Rose O. S. E.; Bara, Robert. A.
Jurnal Ilmiah Platax Vol. 12 No. 2 (2024): ISSUE JULY-DECEMBER 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i2.57758

Abstract

The research aim on natural mangrove forests and silvofishery is to determine the community structure of attached invertebrates to silvofishery and natural mangrove ecosystems. I was comparing the community structure of attached invertebrates in mangrove silvofishery and natural mangrove ecosystems. Sampling was done by dredging the mangrove root skin, the collected samples were then sieved using a sieve with a mesh size of 1.0 mm using salted water and then put into sample bottles and preserved using 70% alcohol solution, then the samples were identified in the laboratory. The chemical physical parameters at both locations are within the normal range in the development of mangrove-attaching invertebrates. The two study sites contained 4 families (Potamididae, Littorinidae, and Muricidae) 7 species of which 3 species were in natural mangroves Littoraria scabra (Linnaeus, 1758), Nerita planospira (Anton, 1838), and Terebralia palustris (Linnaeus, 1767) compared to mangroves In Silvofishery there are 4 species of Chicoreus capicinus (Lamarck, 1822), Cerithidea quadrata (G. B. Sowerby II, 1866), Nerita picea (Recluz, 1841), and Cerithidea obtuse (Lamarck, 1822). The density of the mangrove-attaching anvertebtata in the mangrove forest of Sylvofishery was the highest, namely L. scabra (0.14 ind/m2 ) and the lowest was T. palustris (0.01 ind/m 2 ) Attachment invertebrate diversity at both study sites was in a low condition, and high dominance and uniformity. Keywords: Biofouling, artificial and Silvofishery, Nabire Abstrak Tujuan dari penelitian yang dilakukan pada hutan mangrove alami dan Silvofishery adalah Mengetahui struktur komunitas moluska pada ekosistem mangrove silvofishery dan mangrove alami. Membandingkan struktur komunitas moluska pada ekosistem mangrove silvofishery dan mangrove alami. Pengambilan sampel dengan mengkeruk kulit akar mangrove, sampel yang telah terkumpul kemudian dimasukan kedalam botol sampel dan diawetkan menggunakan larutan alkohol 70%, kemudian sampel diidentifikasi di Laboratorium. Parameter fisik kimia pada kedua lokasi dapat dikatakan dalam range yang normal dalam perkembangan moluska mangrove. Kedua lokasi penelitian terdapat 4 family (Potamididae, Littorinidae, dan Muricidae) 7 spesies dimana 3 spesies pada mangrove alami (Littoraria scabra (Linnaeus, 1758), Nerita planospira (Anton, 1838), dan Terebralia palustris (Linnaeus, 1767) sedangkan pada mangrove Silvofishery terdapat 4 spesies Chicoreus capicinus (Lamarck, 1822), Cerithidea quadrata (G. B. Sowerby II, 1866), Nerita picea (Recluz, 1841), dan Cerithidea obtuse (Lamarck, 1822). Kepadatan moluska mangrove pada hutan mangrove Sylvofishery tertinggi yaitu L. scabra (0,14 ind/m2 ) dan terendah yaitu T. palustris (0,01 ind/m 2 ) Keanekaragaman moluska pada kedua lokasi penelitian barada pada kondisi rendah, dan dominansi tinggi dan seragaman. Kata kunci: Moluska, Mangrove Alami dan Silvofishery, Nabire
Study of the Potential and Development of a Mangrove Ecosystem Based on Ecotourism in Pinasungkulan Village, Minahasa Regency Bonde, Alis Febri; Boneka, Farnis B. Boneka; Schaduw, Joshian N. W.; Makapedua, Daisy Monica; Rumengan, Antonius Petrus; Manoppo, Victoria E. N.
Jurnal Ilmiah Platax Vol. 12 No. 2 (2024): ISSUE JULY-DECEMBER 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i2.57782

Abstract

This research aims to describe the ecological, socio-economic, institutional, and infrastructural conditions. Primary data collection was carried out through direct observation in the field, measuring the potential of mangrove forests, observing biota, and conducting direct interviews with local communities and relevant stakeholders. Secondary data collection was conducted by gathering documents from previous studies/research, legislation, and other supporting data. Four types of mangroves were found: Rhizophora apiculata, Rhizophora mucronata, Sonneratia alba, and Avicennia marina. The highest species density was Rhizophora apiculata with 6.56 individuals/m², the highest species frequency was 1 for Rhizophora apiculata, the highest species coverage value was Sonneratia alba at 34.02, and the highest Importance Value Index (IVI) was Rhizophora apiculata at point 3 with a value of 226.98. The mangrove diversity index (H') was 2.66, indicating a moderate category and the highest evenness index was at point 2, with a value of 0.92. The Mangrove Tourism Suitability Index (IKW) value was 2.36, indicating a Suitable category. The mangrove area in Pinasungkulan Village can accommodate a 350 square meter mangrove tracking area. The Area Carrying Capacity (DDK) is 56 people per day, with an operational time of 8 working hours per day. The study on community perceptions regarding the benefits of the mangrove ecosystem and its potential to be developed as an ecotourism destination is very positive, and it is expected that this can improve the community's welfare in Pinasungkulan Village. Keywords: ecotourism, mangroves, carrying capacity, suitability, Pinasungkulan Abstrak Penelitian ini bertujuan mendeskripsikan kondisi ekologi, sosial ekonomi, kelembagaan dan infrastruktur. Pengumpulan data primer dilakukan melalui pengamatan langsung (observasi) di lapangan, melalui pengukuran potensi hutan mangrove, pengamatan biota dan wawancara langsung dengan masyarakat lokal dan pihak terkait. Pengumpulan data sekunder dilakukan dengan cara mengumpulkan dokumen hasil studi/penelitian, peraturan perundang-undangan dan data pendukung lainnya. Terdapat 4 jenis mangrove yang ditemukan yaitu Rhizophora apiculata, Rhizophora mucronata, Sonneratia alba dan Avicennia marina. Nilai kerapatan jenis tertinggi adalah Rhizophora apiculata yaitu 6,56 individu/m², frekuensi jenis tertinggi adalah 1 pada jenis Rhizophora apiculata, nilai penutupan jenis tertinggi Sonneratia alba yaitu 34,02, Indeks Nilai Penting (INP) tertinggi jenis Rhizophora apiculata di titik 3 dengan nilai 226,98, indeks keanekaragaman mangrove H’= 2,66 dengan kategori sedang, indeks kemerataan tertinggi pada titik 2 yaitu 0,92. Nilai Indeks Kesesuaian Wisata (IKW) mangrove 2,36, menunjukkan kategori Sesuai. Kawasan mangrove Desa Pinasungkulan dapat dibangun tracking mangrove seluas 350 meter². Daya Dukung Kawasan (DDK) adalah 56 orang/hari dengan waktu operasional 8 jam kerja per hari. Kajian persepsi masyarakat tentang manfaat ekosistem mangrove dan potensinya untuk dikembangkan sebagai tujuan ekowisata sangat baik sehingga diharapkan hal tersebut dapat meningkatkan kesejahteraan masyarakat di Desa Pinasungkulan. Kata kunci: ekowisata, mangrove, daya dukung, kesesuaian, pinasungkulan
Co-Authors Bara, Robert. A. Bonde, Alis Febri Daisy Monica Makapedua Gustaf Mamangkey Joshian N.W. Schaduw Kaligis, Erly Yosef Maitindom, Frits A Manoppo, Victoria E. N. Markus T. Lasut Medy Ompi Paransa, Darus Sa’adah Johanis Rose O. S. E. Mantiri, Rose O. S. E. Rumengan, Antonius Petrus Saragih, Hans S. R. P. Veibe Warouw