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UJI KUALITAS BAKTERIOLOGI DEPOT AIR MINUM ISI ULANG DI KECAMATAN AMURANG DAN KECAMATAN TUMPAAN KABUPATEN MINAHASA SELATAN TAHUN 2017 Sangande, John B.; Pinontoan, Odi R.; Rimper, Joice R.T.S.L.
KESMAS Vol 6, No 4 (2017): Volume 6, Nomor 4, Juli 2017
Publisher : Sam Ratulangi University

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Pada tahun 2013 dalam profil kesehatan Indonesia menunjukkan bahwa persentase penduduk Indonesia yang memiliki akses terhadap air minum berkualitas sebesar 67,73%. Terdapat 23 provinsi dari 33 provinsi di Indonesia yang memilik persentase di bawah angka nasional, salah satunya ialah provinsi Sulawesi Utara dengan persentase sebesar 67,21% (Kemenkes RI, 2015). Tujuan dari penelitian ini adalah untuk mengetahui kualitas bakteriologi Depot Air Minum Isi Ulang di Kecamatan Amurang dan Kecamatan Tumpaan Tahun 2017. Penelitian ini menggunakan jenis penelitian deskriptif dengan pendekatan observasional berbasis laboratorium. Dilaksanakan pada bulan Oktober-November 2017. Sampel dalam penelitian ini yaitu 4 Depot Air Minum Isi Ulang (DAMIU) di Kecamatan Amurang dan 4 DAMIU di Kecamatan Tumpaan Kabupaten Minahasa Selatan. Analisis data diperoleh dari hasil pemeriksaan laboratorium dan disajikan dalam bentuk tabel. Kualitas bakteriologi depot air minum isi ulang dengan parameter E. coli yang terdapat pada 4 depot di Kecamatan Amurang dan 4 depot di Kecamatan Tumpaan semua memenuhi syarat Peraturan Menteri Kesehatan No 492/MENKES/PER/IV/2010 yaitu 0/100 ml. Terdapat 4 depot air minum isi ulang yang tidak memenuhi syarat dengan parameter total Coliform yaitu sampel air minum depot B dengan total Coliform 8/100 ml, depot C dengan total Coliform 1/100 ml, depot G dengan total Coliform 17/100 ml, depot H dengan total Coliform 27/100 ml yang diambil dari 4 depot di Kecamatan Amurang dan 4 depot di Kecamatan Tumpaan. Tidak terdapat bakteri E.coli pada 8 DAMIU yang berada di Kecamatan Amurang dan Kecamatan Tumpaan. Sedangkan, terdapat 4 DAMIU yang terdiri dari 2 DAMIU di Kecamatan Amurang dan 2 DAMIU Kecamatan Tumpaan. mengandung bakteri Total Coliform.Kata Kunci: Kualitas Bakteriologi, Depot Air Minum Isi UlangABSTRACTIn 2013 Indonesiaâ€™s health profile shows that the percentage of Indonesian people who have access to quality drinking water is 67,73%. There are 23 provinces out of 33 provinces in Indonesia which have a persentage below the national figure, one of them is North Sulawesi province with a percentage of 67,21% (MoH RI, 2015). The aim of this study is to subdistricts 2017. The study was a descriptive research with laboratory-based observational approach, which conducted from October to November 2017. Four drinking water refill depot (DAMIU) from each subdustrict (Amurang and Tumpaan) were selected as sample. Data analysis was obtained the results of laboratory examination and presented in tabular form. The study revealed that bacteriological quality of E. coli parameters of 4 DAMIU in Amurang subdistrict and 4 DAMIU in Tumpaan subdistrict are all comply with the Regulation of Public Health Minister Number 492/MENKES/PER/IV/2010 which is 0/100 ml of sample. The study also found that 4 DAMIU are not comply with the total Coliform parameters. Total Coliform from DAMIU B, DAMIU C, DAMIU G and DAMIU H were found to be 8/100 ml, 1/100 ml, 17/100 ml and 27/100 ml, respectively. There was no E. coli bacteria found in 8 DAMIU located in Amurang and Tumpaan subdistricts however, there were 4 DAMIU consisting of 2 DAMIU in Amurang subdistricts and 2 DAMIU Tumpaan subdistricts that contain total Coliform bacteria.Keywords: Bacteriological quality, drinking water refill depot

MINUTE ROTIFER DARI PERAIRAN ESTUARI SULAWESI UTARA DAN POTENSINYA SEBAGAI PAKAN LARVA IKAN Lahope, Hety B; Wullur, Stenly; Rimper, Joice; Pangkey, Henneke; Rumengan, IFM
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 9, No 1 (2013)
Publisher : Sam Ratulangi University

Penelitian ini bertujuan untuk mendapatkan minute rotifer (rotifer berukuran kecil) yang ada di perairan Sulawesi Utara yang memiliki potensi untuk dimanfaatkan sebagai pakan awal larva ikan laut. Sampling rotifer dilakukan di tujuh lokasi estuari yang berbeda dengan menggunakan plankton net (mata jaring 40 mm). Prosedur identifikasi rotifer didasarkan pada tampakan morfologi. Morfometri dilakukan di bawah mikroskop pembesaran 40-100x yang terhubung dengan sebuah komputer untuk visualisasi dan pengukuran. Tiga spesies minute rotifer berhasil diisolasi dari tiga lokasi estuari berbeda. Colurella sp. diisolasi dari sebuah kolam payau (salinitas 25 ppt) yang dipenuhi sampah rumah tangga di Tumpaan Kabupaten Minahasa. Lecane sp. cf Lecane quadridentata (Lecane) diisolasi dari sebuah tambak payau (salinitas 17 ppt) di Meras Kota Manado dan Lecane sp. cf Lecane papuana di muara sebuah sungai kecil (salinitas <3 ppt) di Tateli Kabupaten Minahasa. Semua minute rotifer yang ditemukan ini berhasil didomestikasi dan menunjukkan adaptasi positif dalam pemeliharaan berbasis mikroalga. Colurella sp, Lecane sp. cf L. quadridentata dan Lecane sp. cf L. papuana memiliki ukuran panjang lorika (PL) masing-masing (97,10 Â± 3,58 mm, 130,83 Â± 12,06 mm dan 118,70 Â± 5,46 mm) sedangkan lebar lorika (55,37 Â± 2,04 mm, 91,95 Â± 10,58 mm dan 101,28 Â± 6,623 mm) yang secara signifikan lebih kecil dari B. rotundiÂformis (PL 167,41 Â± 9,10 mm dan LL 122,44 Â± 7,29 mm) (p<0,05), sehingga berpotensi untuk dimanfaatkan sebaÂgai pakan awal larva ikan laut yang membutuhkan pakan berukuran lebih kecil. Kata kunci: minute rotifer, Lecane sp, Colurella sp, larva Â This study aims to get minute rotifers (small rotifers) in the waters of North Sulawesi which has the potential to be used as starting food for marine fish larvae. The sampling for rotifers was conducted in seven different estuarine locations using plankton net (mesh size 40 mm). Rotifer identification proceÂdure was based on morphological appearances. Morphometric observations were conducted under 40-100x magnification microscope connected to a computer for visualization and measurement. Three rotiÂfer species were able to be isolated from three different estuarine locations. Colurella sp. was isolated from a brackish pond (salinity of 25 ppt) which were filled with household garbage in Tumpaan, MinaÂhasa regency. Lecane sp. cf Lecane quadridentata (Lecane) was isolated from a brackish pond (salinity of 17 ppt) in Meras-Manado and Lecane sp. cf Lecane papuana at the estuary of a small river (salinity <3 ppt) in Tateli, Minahasa regency. All minute rotifers were successfully domesticated and showed poÂsitive adaptation in microalgae-based rearing. Colurella sp, Lecane sp. cf L. quadridentata and Lecane sp. cf L. papuana have lorica length (PL) of 97.10 Â± 3.58 mm, 130.83 Â± 12.06 mm, and 118.70 Â± 5.46 mm, respectively, and lorica width (LL) of 55.37 mm Â± 2.04, 91.95 Â± 10.58 mm, and 101.28 Â± 6.623 mm. They were significantly smaller than B. rotundiformis (PL of 167.41 Â± 9.10 mm and LL 122.44 Â± 7.29 mm) (p<0.05), which are commonly used in larva rearing. Thus these rotifers have potentials to be used as starting food for marine fish larvae that need a smaller size food. Keywords: Minute rotifer, Lecane sp, Colurella sp, larva

ANALISIS JENIS-JENIS PIGMEN ALGA COKLAT Padina australis Hauck DARI PERAIRAN LAUT SULAWESI Kalalo, Julia L.; Mantiri, Desy; Rimper, Joice
JURNAL PESISIR DAN LAUT TROPIS Vol 2, No 1 (2014): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.2.1.2014.6352

Padina australis Hauck is one of the brown algae that belongs to a class Phaeophyceae, Dictyotales order. This species is very important because it is useful as animal feed, fertilizer, pharmaceutical ingredients, human food and cosmetics. Sample taken in marine waters Sulawesi, precisely in the waters of cape Kalasey, Tongkaina waters, and the waters Blongko. The purpose of this study is to analyze the type of pigment chlorophyll with qualitatively and quantitatively. Process of extraction is done with organic solvent, and the developer with PE and acetone (80:20). Extraction results then analyzed with a spectrophotometer at a wavelength of 380-700nm, for the type of pigment chlorophyll. Type of pigment found in the pigment extraction P. australis Hauck of three waters is chlorophyll-a and chlorophyll-b, with an average concentration of chlorophyll-a value that is the highest in the waters Blongko 0.381 Âµg/ml in PTK3, with a range from 0.293 to 0.381 Âµg/ml, and lowest in the waters Tongkaina is 0.143 Âµg/ml PT3, with a range from 0.431 to 0.30 Âµg/ml.

THE LIFE CYCLE AND SENSITIVITY OF THE LOCAL COPEPOD, APOCYCLOPS SP TO TRIBUTYLTIN EXPOSURE Rumengan, Inneke F.M.; Rumampuk, N.D.; Sumilat, D.; Rimper, J.
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 2 (2009): June 2009
Publisher : Universitas Atma Jaya Yogyakarta

Uji toksisitas tributiltin secara akut telah dicobakan pada kopepoda tropis Apocyclopssp. yang diisolasi dari tambak Manembo-nembo Bitung, Sulawesi Utara. Kopepodadikultur dalam kondisi laboratorium (25-27oC, 30 ppt dan tanpa penerangan) denganpemberian mikroalga Nannochloropsis oculata sebagai pakan. Semua individukopepoda yang digunakan sebagai hewan uji berasal dari sepasang induk jantan danbetina. Kopepoda untuk eksperimen tributiltin (TBT) diberi perlakuan dalam air lautdan selama eksperimen tidak diberi pakan, dan larutan stok TBT-Cl dilarutkandalam aseton. Pengaruh starvasi (tanpa pemberian pakan) dan aseton diamatisebelum uji toksisitas TBT dilakukan. Setiap eksperimen, 10 kopepoda dewasa (5jantan dan 5 betina) dari satu kohort dimasukkan ke dalam cawan petri (diameter 3cm) berisi masing-masing 10 ml air laut. Ternyata perlakuan tanpa pemberian pakantidak mempengaruhi kopepoda selama periode eksperimen. Dalam uji toksisitas TBT,hanya 3 individu yang dapat bertahan sampai akhir eksperimen (8 jam) walaupundengan konsentrasi terendah (0.0001 ng.l-1). Kebanyakan individu telah mati sebelum8 jam diekspos ke konsentrasi TBT 0.01 ng.l-1. Pada konsentrasi TBT yang lebihtinggi (0.1 dan 1 ng.l-1), tingkat kelulusan hidup kopepoda hanya 50% dalam waktukurang dari satu jam, sedangkan kopepoda yang sisa masih hidup semuanya sebelummati jam ke-4 yang diberi perlakukan. Dalam uji toksisitas ini, semua konsentrasiyang dicobakan ternyata lebih kecil dari rata-rata konsentrasi TBT di alam (10 ng.l-1).Kisaran konsentrasi TBT yang lebih lebar masih perlu diuji-cobakan untukmengklarifikasi efek akut TBT agar dapat diperoleh konsentrasi untuk uji toksisitassecara kronis.

Pertumbuhan Trepang Holothuria scabra yang dipelihara dalam kurungan dengan substrat berbeda di Perairan Pantai Bahoi Kudato, Vania E.; Sambali, Hariyani; Ngangi, Edwin L. A.; Kusen, Diane J.; Longdong, Sammy N. J.; Rimper, Joice R. T. S. L.
e-Journal BUDIDAYA PERAIRAN Vol 10, No 2 (2022)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/bdp.10.2.2022.36088

This research was conducted to examine the effect of different substrates on the growth of Sea Cucumber Holothuria scabra reared in cages in Bahoi Coastal waters. This research was conducted from April to June 2021 in Bahoi Coastal Waters, West Likupang, North Minahasa. The method used in this research is the observation method with three treatments: A (sand), B (mud), C (seagrass), and three replications. The cages are made of nets size 100 cm x 100 cm x 50 cm as many as 9 cages. The sea cucumber size data was collected every two weeks. Samples of sea cucumber were taken randomly from each cage, left for Â± 10 minutes, photographed, weighed, then recorded. Data collection for water quality is carried out every week during the day at the lowest tide, between 12:00 to 14:00. Water quality parameters were measured using a thermometer, refractometer, and litmus paper. Based on the research results, the average absolute weight growth and daily growth rate of sea cucumber reared with mud substrate showed the best results, that is 0.55 g and 0.72%, while the sand and seagrass substrates showed negative values. The results of ANOVA (analysis of variance) showed that there was no significant difference between absolute growth and daily growth rate of Sea Cucumber H. scabra reared on sand, mud, and seagrass substrates.

The research aims to find out the existence and the most dominant rotifera in coastal territorial waters and estuaries in North Sulawesi, and their relationship with temperature, salinity, turbidity, dissolved oxygen, and nutrients. The research was conducted in Manembo-nembo, Minanga, Wori, and Tumpaan. Identification of rotifera revealed three species of rotifera from all locations, i.e. Brachionus rotundiformis, Brachionus caudatus, and Brachionus quadridentatus, with abundance value of 198 Joice R.T.S.L. Rimper; Richardus F. Kaswadji; Bambang Widigdo; Nawangsari Sugiri
Forum Pasca Sarjana Vol. 31 No. 1 (2008): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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The research aims to find out the existence and the most dominant rotifera in coastal territorial waters and estuaries in North Sulawesi, and their relationship with temperature, salinity, turbidity, dissolved oxygen, and nutrients. The research was conducted in Manembo-nembo, Minanga, Wori, and Tumpaan. Identification of rotifera revealed three species of rotifera from all locations, i.e. Brachionus rotundiformis, Brachionus caudatus, and Brachionus quadridentatus, with abundance value of 1984.4 ind/m3; 26.1 ind/m3; and 212.9 ind/m3 respectively. Result of analysis indicates that abundance of those three rotifera are significantly different both between locations and sampling sites. The abundance of B. rotundiformis in Manembo-nembo and Minanga is higher compared to those in Wori and Tumpaan. The abundance of B. caudatus is higher in Manembo-nembo and Minanga compared to those in Wori and Tumpaan. The abundance of B. quadridentatus is also different from the other two species, the abundance is sifnificantly different in Minanga compared to those in Manembo-nembo and Tumpaan, but is not significantly different with those from Wori. The highest abundance of B. rotundiformis was found in brackishwater pond and the lowest was in coastal area. Key words: bioecology, rotifera, coastal water, estuary

Morphometric and Meristic Yellowstrip Scad Selaroides leptolepis (Cuvier, 1833) Landed at TPI Tumumpa and PPI Kema Fajar Vafry; Manginsela, Fransine B.; Wantasen, Adnan S.; Mandagi, Stephanus V.; Tilaar, Ferdinand F.; Rimper, Joice R.T.S.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.v11i1.44335

This research about morphometric and meristic character of yellow stripscad. Fish samples were selected from various sizes in order to represent the various sizes of yellow stripscad that existin nature. Samples of yellow stripscad were taken from fish landed at TPI Tumumpa as many as 60 tail and PPI Kema as many as 60 tail. The purpose of this study was to determine how the morphometric and meristic character of yellow stripscad landed in TPI Tumumpa and PPI Kema. Data analysis with K-mean cluster method using SPSS 25 and Ms. Excel 2019. Yellow stripscad landed in TPI Tumumpa and PPI Kema have different morphometric character with percentage difference of 95%. For meristic character have a fairly small lavel of difference with a difference of 29%. Keywords : yellow stripscad, morphometric, meristic, TPI Tumumpa, PPI Kema. Abstrak Penelitian ini mengenai karakter morfometrik dan meristik ikan selar kuning. Penelitian ini menggunakan metode deskriptif kuantitatif. Sampel ikan akan dipilih dari berbagai macam ukuran agar dapat mewakili berbagai macam ukuran ikan selar kuning yang ada di alam. Sampel ikan selar kuning diambil dari ikan yang didaratkan di TPI Tumumpa sebanyak 60 ekor dan di PPI Kema sebanyak 60 ekor. Tujuan dari penelitian ini untuk mengetahui bagaimana karakter morfometrik dan meristik ikan selar kuning yang didaratkan di TPI Tumumpa dan PPI Kema. Analisis data dengan metode K-mean cluster menggunakan program SPSS 25 dan Ms. Excel 2019. Ikan selar kuning yang didaratkan di TPI Tumumpa dan PPI Kema memiliki karakter morfometrik yang berbeda dengan persentase perbedaan sebesar 95%. Untuk karakter meristiknya memiliki tingkat perbedaan yang cukup kecil dengan tingkat perbedaan sebesar 29%. Kata- kata kunci : ikan selar kuning, morfometrik, meristik, TPI Tumumpa, PPI Kema.

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

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

Zooplankton in the Seagrass Beds of Nain Island Tuliabu, Nelda; Rimper, Joice R.T.S.L; Warouw, Veibe; Kaligis, Erly Yosef; Rumampuk, Natalie Detty C; Ngangi, Edwin Leonardo Apolonio
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.v12i1.50187

This research was conducted in July 2022, the determination of sampling locations was carried out by purposive sampling, namely data collection with certain considerations to obtain samples that represent the research location area. Seawater samples were taken using a plankton net which was then used for the zooplankton identification process carried out in the Marine Biology Laboratory of the Faculty of Fisheries and Marine Science. Measurement of physical parameters of water chemistry consisting of temperature, salinity, and pH, was carried out in situ. The content of nitrate and phosphate was conducted at the WLN laboratory (Water Laboratory Nusantara-WLN). Zooplankton counts were expressed in ind/l. Qualitative determination of plankton was made up to the genus level. The results of zooplankton identification consisted of 5 genera namely Acartia, Cyclops, Euterpina, Nauplius, and Oithona. The calculation of zooplankton abundance is in the range of 3-5 ind/l. The highest abundance was found at station one which was 5 ind/l followed by station three which was 4 ind/l and then station two as much as 3 ind/l. The diversity index is in the range of 0.4740-0.7786, the uniformity index is in the range of 0.2945-0.7087, and the dominance index ranges from 0.5971-0.7744. Keywords: Zooplankton, Seagrass Meadow, Nain Island, Abundance, Biological Index. Abstrak Penelitian ini dilaksanakan pada bulan Juli 2022, penentuan lokasi pengambilan sampel dilakukan dengan cara purposive sampling yaitu pengumpulan data dengan pertimbangan tertentu untuk memperoleh sampel yang mewakili wilayah lokasi penelitian. Sampel air laut diambil dengan menggunakan plankton net yang selanjutnya digunakan untuk proses identifikasi zooplankton yang dilakukan di Laboratorium Biologi Kelautan Fakultas Perikanan dan Ilmu Kelautan. Pengukuran parameter fisik kimia air yang terdiri dari suhu, salinitas, pH, dilakukan secara in situ. Kadar nitrat dan fosfat dilakukan di laboratorium WLN (Laboratorium Air Nusantara-WLN). Jumlah Zooplankton dinyatakan dalam ind/l. Penentuan plankton secara kualitatif dilakukan sampai tingkat genus. Hasil identifikasi zooplankton terdiri dari 5 genus yaitu Acartia, Cyclops, Euterpina, Nauplius, dan Oithona. Perhitungan kelimpahan zooplankton berada pada kisaran 3-5 ind/l. Kelimpahan tertinggi terdapat pada stasiun satu sebesar 5 ind/l, disusul stasiun tiga sebesar 4 ind/l dan kemudian stasiun dua sebanyak 3 ind/l. Indeks keanekaragaman berada pada rentang 0,4740-0,7786, indeks keseragaman berada pada rentang 0,2945-0,7087, sedangkan indeks dominasi berkisar antara 0,5971-0,7744. Kata Kunci: Zooplankton, Padang Lamun, Pulau Nain, Kelimpahan, Indeks Biologi.

Analysis Of The Effect Of El Niño La Nina And Sea Level Temperatures On Chlorophyll-A Concentrations In The Waters Of The Maluku Sea: Pesoth, Christianto; Rimper, Joice R.T.S.L; Warouw, Veibe; Mantiri, Rose O. S. E.; Sumilat, Deiske Adeliene
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.v12i1.52236

Global weather phenomena cannot be separated from the interaction between the ocean and the atmosphere. El Nino and La Nina are phenomena that were related to the interaction of the sea and the atmosphere which affects many aspects, including the fertility of waters. Indicators of the fertility of water could be determined from the distribution of sea surface temperature and chlorophyll-a concentration. This study aims to analyze variations in the distribution of sea surface temperature and chlorophyll-a in the Maluku Sea when the El Nino and La Nina phenomena are activated. The results showed that when the El Nino phenomenon was activated, there was a decrease in sea surface temperature and an increase in the concentration of chlorophyll-a from normal conditions. Besides, when the La Nina phenomenon was activated, there was an increase in sea surface temperature and a decrease in the concentration of chlorophyll-a from normal conditions. Spatial interpretation when El Nino and La Nina are activated showed low values with a distribution indicating the mixed proceed for the sea surface temperature parameter and showed higher values with an even distribution for the chlorophyll-a parameter. Keywords: Sea Surface Temperature, Chlorophyll-a, El Nino, La Nina. Abstrak Fenomena cuaca secara global tidak bisa lepas kaitannya dengan interaksi antara laut dan atmosfer. El Nino dan La Nina merupakan salah satu fenomena yang berkaitan dengan interaksi laut dan atmosfer yang berpengaruh terhadap banyak aspek termasuk kesuburan suatu perairan. Indikator kesuburan suatu perairan dapat ditentukan dari distribusi suhu permukaan laut dan konsentrasi klorofil-a. Penelitian ini bertujuan untuk menganalisa variasi distribusi suhu permukaan laut dan klorofil-a di perairan Laut Maluku saat fenomena El Nino dan La Nina aktif. Hasil penelitian menunjukkan bahwa saat fenomena El Nino aktif terjadi penurunan suhu permukaan laut dan peningkatan konsentrasi klorofil-a dari kondisi normal. Sebaliknya saat fenomena La Nina aktif terjadi peningkatan suhu permukaan laut dan penurunan konsentrasi klorofil-a dari kondisi normal. Interpretasi spasial saat El Nino dan La Nina aktif menunjukkan nilai yang rendah dengan sebaran yang menunjukkan proses mixing untuk parameter suhu permukaan laut, dan menunjukkan nilai yang lebih tinggi dengan sebaran merata untuk parameter klorofil-a. Kata kunci: Suhu Permukaan Laut, Klorofil-a, El Nino, La Nina.

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