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Robert A. Bara
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Medicine & Pharmacology Nursing Public Health

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Monitoring System for Sea Surface Temperature and Wind Speed in FADs Based on the Internet of Things Hidayat, Andre Alfian; Angmalisang, Ping Astony; Bara, Robert Antonius; Sumilat, Deiske Adeliene; Luasunaung, Alfret; Warouw, Veibe
BRILIANT: Jurnal Riset dan Konseptual Vol 8 No 3 (2023): Volume 8 Nomor 3, Agustus 2023
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v8i3.1298

Abstract

Sea Surface Temperature (SST) is the temperature of the water measured at sea level. SST is a crucial marine parameter that influences the weather and climate in Indonesia. The value of sea surface temperature will be very closely related to factors such as the depth of measurement from sea level, the intensity of sunlight received, season, weather, water depth, air circulation, and cloud cover. This study aims to design a prototype tool to measure wind speed and sea surface temperature parameters. The components used are the DS18B20 sensor, JL-FS2 sensor, Arduino Mega 2560, and the SIM900a GSM Module. The system is displayed in real-time via the Thingspeak website, accessed via a PC or smartphone. The DS18B20 sensor, as a sea surface temperature sensor, can measure these parameters by looking at the trend of changing day and night temperatures. The JL-FS2, as a wind speed sensor, has been able to measure wind speed parameters during field tests at FADs.
Species and Density of Limpets (Patellogastropoda) in The Intertidal Rocky Shore Akaiwa Poluan, Irene; Rumengan, Inneke F.M.; Paruntu, Carolus P.; Bara, Robert A.; Sumilat, Deiske A.; Boneka, Farnis B.
JURNAL PESISIR DAN LAUT TROPIS Vol. 14 No. 1 (2026): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.14.1.2026.66339

Abstract

Rocky intertidal shores are dynamic coastal ecosystems characterized by strong environmental gradients that generate distinct patterns of organism zonation. Limpets (Patellogastropoda) play a crucial role as primary herbivores and ecological indicators in these habitats. This study aimed to examine species composition and density of limpets in the upper and lower intertidal zones of the rocky intertidal shore of Akaiwa, Tomioka, Amakusa, Japan. The research was conducted from February to March 2025. Sampling was conducted using a quadrat sampling method with quadrats measuring 25 cm × 25 cm, randomly placed within a 10 m × 15 m study area across the upper and lower intertidal zones. Limpet specimens were identified based on shell morphological characteristics, and species density was calculated and statistically compared between zones using a t-student test. The results recorded eight limpet species belonging to the families Lottidae and Nacellidae, with seven species occurring in the upper zone and six species in the lower zone. Limpet density in the upper intertidal zone ranged from 1.60 to 20.80 ind/m² and was dominated by Lottia tenuisculpta, whereas the lower zone exhibited higher densities ranging from 1.60 to 28.80 ind/m², with a significant dominance of Cellana toreuma. The study concludes that limpet community structure is strongly influenced by vertical intertidal zonation. Further long-term studies are recommended to elucidate temporal dynamics of limpet communities in relation to seasonal variation and environmental change. Keywords: Amakusa, density, limpet, Akaiwa rocky shore, intertidal zonation   Abstrak Pantai intertidal berbatu merupakan ekosistem pesisir yang dinamis dengan gradien lingkungan yang kuat, sehingga membentuk pola zonasi organisme yang khas. Limpet (Patellogastropoda) berperan penting sebagai herbivora utama dan indikator ekologis pada ekosistem ini. Penelitian ini bertujuan untuk mengkaji komposisi jenis dan kepadatan limpet pada zona atas dan zona bawah pantai rocky intertidal Akaiwa, Tomioka, Amakusa, Jepang. Penelitian ini dilaksanakan pada Februari-Maret 2025. Pengambilan sampel dilakukan dengan metode quadrat sampling menggunakan kuadrat berukuran 25 cm × 25 cm yang ditempatkan secara acak di area 10 m × 15 m pada zonasi intertidal bagian atas dan bawah. Spesimen limpet diidentifikasi berdasarkan karakter morfologi cangkang, kemudian dianalisis kepadatan jenis dan diuji perbedaannya antar zona menggunakan uji t-student. Hasil penelitian menunjukkan bahwa delapan spesies limpet dari famili Lottidae dan Nacellidae teridentifikasi, dengan tujuh spesies pada zona atas dan enam spesies pada zona bawah. Kepadatan limpet di zona atas berkisar antara 1,60-20,80 ind/m² dan didominasi oleh Lottia tenuisculpta, sedangkan zona bawah memiliki kepadatan lebih tinggi, yaitu 1,60-28,80 ind/m², dengan dominasi Cellana toreuma yang berbeda nyata secara statistik. Kesimpulan penelitian menunjukkan bahwa struktur komunitas limpet dipengaruhi kuat oleh zonasi vertikal intertidal. Disarankan penelitian lanjutan dilakukan secara temporal untuk memahami dinamika komunitas limpet terhadap variasi musim dan perubahan lingkungan. Kata kunci: Amakusa, kepadatan, limpet, pantai berbatu Akaiwa, zonasi intertidal
Comparison of Zooplankton Abundance Vertically and Horizontally in The Waters of Boulevard II, Manado City Utomo, Victoria O.S.E.; Rimper, Joice R.T.S.L; Bara, Robert A.; Mamuaja, Jane M.; Wagey, Billy T.; Sumilat, Deiske A.
JURNAL PESISIR DAN LAUT TROPIS Vol. 14 No. 1 (2026): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.14.1.2026.65009

Abstract

Zooplankton are microscopic organisms that play an important role in the marine food chain as primary consumers and as a food source for other organisms. Their presence and composition can serve as indicators of the health of aquatic ecosystems. This study was conducted in the waters of Boulevard II, Manado City, using a plankton net equipped with a cod end. Samples were collected vertically at a depth of 5 m and horizontally along a 10 m transect. Physico-chemical parameters such as temperature, salinity, and dissolved oxygen (DO) were measured in situ at each station using a Water Quality Monitor. Zooplankton identification was carried out at the Bio-Ecology Laboratory, Faculty of Fisheries and Marine Science, using a microscope and referring to Illustrations of the Marine Planktons of Japan (Yamaji, 1979) and WoRMS data. The results showed that the zooplankton found belonged to the class Copepoda, e.g. Nauplii, Acartia sp., Oithona sp., and Paracalanus sp.. The highest vertical abundance was recorded at station 1 with 11.51 Ind/L, while the lowest was at station 2 with 6.99 Ind/L. Horizontally, the highest abundance occurred at station 2 with 6.04 Ind/L and the lowest at station 1 with 3.21 Ind/L. These variations were influenced by temperature, salinity, and dissolved oxygen, which affect the distribution of zooplankton. Keywords : comparison, horizontal, vertical, zooplankton   Abstrak Zooplankton merupakan organisme mikroskopis yang berperan penting dalam rantai makanan laut sebagai konsumen primer dan sumber makanan bagi organisme lain. Kehadiran serta komposisi zooplankton dapat menjadi indikator kesehatan ekosistem perairan. Penelitian ini dilakukan di Perairan Boulevard II, Kota Manado, menggunakan plankton net yang dilengkapi cod end. Pengambilan sampel dilakukan secara vertikal pada kedalaman 5 m dan horizontal sepanjang 10 m. Parameter fisika-kimia seperti suhu, salinitas, dan oksigen terlarut (DO) diukur secara in situ menggunakan Water Quality Monitor di setiap stasiun. Identifikasi zooplankton dilakukan di Laboratorium Bio-Ekologi Fakultas Perikanan dan Ilmu Kelautan menggunakan mikroskop dengan acuan Illustrations of the Marine Planktons of Japan (Yamaji, 1979) dan data WoRMS. Hasil penelitian menunjukkan bahwa zooplankton yang ditemukan berasal dari kelas Copepoda, yaitu Nauplii, Acartia sp., Oithona sp., dan Paracalanus sp.. Kelimpahan vertikal tertinggi terdapat di stasiun 1 sebesar 11,51 Ind/L dan terendah di stasiun 2 sebesar 6,99 Ind/L. Secara horizontal, kelimpahan tertinggi terdapat di stasiun 2 sebesar 6,04 Ind/L dan terendah di stasiun 1 sebesar 3,21 Ind/L. Variasi kelimpahan ini dipengaruhi oleh suhu, salinitas, dan oksigen terlarut yang memengaruhi penyebaran zooplankton. Kata kunci: perbandingan, horizontal, vertikal, zooplankton
Phytochemical Compounds and Antibacterial Test of Theonella cylindrica against Staphylococcus aureus and Escherichia coli Mambo, Christi D.; Warouw, Finny; Nangoy, Edward; Rumengan, Inneke; Kepel, Billy; Bara, Robert
JURNAL BIOS LOGOS Vol. 15 No. 2 (2025): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v15i2.59230

Abstract

Infectious diseases are a health problem faced by developing countries like Indonesia. This disease is caused by bacteria that attack humans. Improper use of antibiotics can cause bacterial resistance to antimicrobials. Antimicrobial resistance is the most significant public health threat, resulting in greater demand for finding new effective antimicrobials from natural products such as sea sponges. This research aimed to test the antibacterial activity of Theonella extract against Staphylococcus aureus and Escherichia coli and determine the class of chemical compounds contained therein. Research stages include sampling, sample preparation and extraction, qualitative phytochemical screening, making solutions, media creation, and antibacterial testing. The research showed that sponges metabolite compounds consisted of alkaloids, flavonoids, tannins, saponins, and phenolics. The diameter of the inhibition zone at concentrations of 80% and 100% showed potential antibacterial activity but more strongly inhibited the growth of Staphylococcus aureus bacteria than Escherichia coli bacteria.
Co-Authors Abdul, Jihan A. Adrian, Melinda Margareta Alfret Luasunaung Angeline Ngantung, Angeline Angmalisang, Ping Astony Antonius R.B. Ola Ari B. Rondonuwu Azani, Audia Azizah Batarogoa, Nego E. Billy Kepel Billy Theodorus Wagey Calvyn F. A. Sondak, Calvyn F. A. Carolus Paulus Paruntu Daisy Monica Makapedua Darus S. Paransa Deiske Adeliene Sumilat, Deiske Adeliene Dien, Heffry Veibert Dwilestari . Edward Nangoy, Edward Faidiban, Aqueline N. Farnis B. Boneka Feny Mentang Fitje Losung Frengki P. Menggelea Ginting, Elvy Like Grace Debbie Kandou Grace Sanger, Grace Grevo S Gerung Henoch Awaloei Hidayat, Andre Alfian Indri Manembu Inneke F. M Rumengan Jimmy Posangi Joice R.T.S.L Rimper Joshian N.W. Schaduw Kipimbob, Eflentina Kurniati Kemer Lasut, Astrid Y. Lintang, Rosita AJ Mambo, Christi D. Mamuaja, Jane M. Mangindaan, Remy Mangindaan, Remy Emile Petrus Mantiri, Desy M. H Manu, Lusia Mona P. Wowor Nawea, Yohanis Ni Luh G.L. Jayalandri, Ni Luh G.L. Nickson J. Kawung, Nickson J. O. Mona Wowor Opa, Samuel Palungan, Irpan Pangouw, Excel Paransa, Darus Sa'adah Johanis Paransa, Darus Saadah J. Paulus, James J. H Pelafu, Widya Pelle, Wilmy Pemsi M. Wowor, Pemsi M. Poluan, Irene Putri, Vita A.D Ramadan, Febrian Rene Charles Kepel, Rene Charles Rignolda Djamaluddin Roike Iwan Montolalu Rompas, Rizald Rumengan, Antonius Petrus Ruru, Ricky Andreas Salaki, Meiske S. Salawati, Abraham Imanuel Sanadi, Troy Sandra Tilaar Sembiring, Sindiy Cloudya Sihombing, Frengky Silvester B Pratasik Stenly Wullur Tansil, Alberta Y.M. Titi L. Faraknimella, Titi L. Undap, Nani I.J Unstain N. W. J. Rembet, Unstain N. W. J. Utomo, Victoria O.S.E. Veibe Warouw Vivi P. Santoso Warouw, Finny Widya Astuty Lolo, Widya Astuty Wilhelmina Patty Yolanda A. Kasi