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All Journal JURNAL PESISIR DAN LAUT TROPIS JURNAL ILMIAH PLATAX
Ari B Rondonuwu
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Earth & Planetary Sciences Environmental Science

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The Growth Rate Of Acropora sp. Transplanted On Artificial Reefs In Kareko Waters Of North Lembeh Sub-District Of Bitung City Kayyan Mompala; Ari B Rondonuwu; Unstain N. W. J Rembet
Jurnal Ilmiah PLATAX Vol. 5 No. 2 (2017): ISSUE JULY - DECEMBER 2017
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.5.2.2017.16999

Abstract

The purpose of this research is to know the success rate of Acropora sp coral growth rate transplanted on different artificial reefs (iron and concrete) in Kareko waters of North Lembeh Sub-district of Bitung City. The study was conducted in November 2016 - February 2017. The data were collected by SCUBA divers and counted the number of dead and surviving coral transplants and measured the absolute length increase for each month. The results showed that the survival rate and the growth rate of coral transplant of iron-made reefs were 70% (survival rate) and 1.00 cm / month (growth rate), while artificial reefs were recorded had 50% (survival rate) and 0.93 cm / month (growth rate). Coral transplant growth rates on different substrates (iron and concrete) were not significantly different (P> 0.05). Keywords : Growth rate, Acropora sp, Transplantation, Artificial reef  ABSTRAKTujuan penelitian yaitu mengetahui tingkat keberhasilan hidup laju pertumbuhan karang Acropora sp yang ditransplantasi pada terumbu buatan yang berbeda (besi dan beton) di Perairan Kareko Kecamatan Lembeh Utara Kota Bitung.  Penelitian ini dilakukan pada bulan November 2016 – Februari 2017.  Pengambilan data dilakukan dengan penyelaman SCUBA dan menghitung jumlah transplant yang mati dan yang masi bertahan hidup serta mengukur pertambahan panjang mutlak setiap bulan.  Hasil penelitian menunjukan bahwa tingkat keberhasilan hidup dan laju pertumbuhan transplant pada terumbu buatan besi yaitu 70% (survival rate) dan 1.00 cm/bulan (laju pertumbuhan), sedangkan pada terumbu buatan beton yaitu 50% (survival rate) dan 0.93 cm/bulan (laju pertumbuhan).  Laju pertumbuhan transplant pada substrat yang berbeda (besi dan beton) tidak berbeda nyata (P>0.05). Kata Kunci: Laju pertumbuhan, Acropora sp, Transplantasi, Terumbu buatan
The Inventory of Seagrasses in Marine Field Station of Faculty of Fisheries and Marine Science in Subdistrict of East Likupang District North Minahasa Stevani Rawung; Ferdinand F Tilaar; Ari B Rondonuwu
Jurnal Ilmiah PLATAX Vol. 6 No. 2 (2018): ISSUE JULY-DECEMBER 2018
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.6.2.2018.20619

Abstract

This study was conducted in Marine Field Station of Faculty of Fisheries and Science of Sam Ratulangi University, Sub-district of East Likupang, North Minahasa. This study aims to identified the seagrasses in the water of Marine Field Station. The benefits of this study are for the database of seagrasses ecosystem management and comparative for other studies. The Observation and data collection was using random survey technic by analyzed the areas to collecting all the seagrass species found. Furthermore, the seagrass samples were categorised into each species. The result showed the amount of seagrass species in Marine Field Station are 8 species from 6 genera and 2 families: Cymodocea rotundata, Cymodocea serrulata, Halodule uninervis, Syringodium isoetifolium, Thalassia hemprichii, Enhalus acoroides,  Halophila ovalis, dan Halophila minor.Keyword: Inventory, Seagrass, Marine Field Station ABSTRAKPenelitian dilakukan di perairan Marine Field Station Fakultas Perikanan dan Ilmu Kelautan Unsrat Kecamatan Likupang Timur Kabupatan Minahasa  Utara. Tujuan penelitian  untuk mengidentifikasi lamun yang ada di Perairan Marine Field station. Manfaat penelitian dapat menjadi data pengelolaan ekosistem padang lamun dan dapat menjadi perbandingan untuk penelitian-penelitian selanjutnya. Pengamatan dan pengambilan sampel menggunakan teknik survei jelajah, yaitu dengan menjelajahi wilayah pengamatan sambil mencari semua spesies lamun. Lamun yang diambil adalah semua jenis yang ditemui. Selanjutnya, sampel lamun dikelompokan berdasarkan spesies. Hasil pengamatan menunjukkan jumlah spesies lamun pada lokasi penelitian di Perairan Marine Field Station adalah 8 spesies dari 6 genera dan 2 famili yaitu, Cymodocea rotundata, Cymodocea serrulata, Halodule uninervis, Syringodium isoetifolium, Thalassia hemprichii, Enhalus acoroides,  Halophila ovalis, dan Halophila minor. Kata kunci: Inventarisasi, Lamun, Marine Field Station
DIMENSI DAN KOMPOSISI NEMATOSIT PADA KARANG SCLERACTINIA, Acropora florida DAN Acropora divaricata DI PANTAI MOTANDOI SELATAN KABUPATEN BOLAANG MONGONDOW SELATAN Sanjay Gagu; Suria Darwasito; Billy Th Wagey; Antonius P Rumengan; Ari B Rondonuwu; Carolus P Paruntu
JURNAL PESISIR DAN LAUT TROPIS Vol. 7 No. 3 (2019): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.7.3.2019.24499

Abstract

The purpose of this study was to determine the type, dimensions and composition of nematocytes in Scleractinia, Acropora florida and Acropora divaricata.  This research was conducted in South Motandoi Beach, East Pinolosian District, South Bolaang Mongondow Regency, North Sulawesi for five (5) months; from February to June 2019.  The method of this research was observation using student-t statistical data analysis. Microbasic p-Mastigophore type-II (MpM-II) and Holotricous isorhiza (HI), while A. divaricata only has type-II Microbasic p-Mastigophore (MpM-II) nematocytes.  The nematocytes dimension showed an average capsule length of MpM II in A. florida of was 262.32 µm and A. divaricata was 125.15 µm, mean capsule width of MPM II in A. florida was 67.01 µm and A. divaricata was 31.95 µm, and the average length of mpM II on A. florida was 154.44 µm, and A. divaricata was 70.97 µm.  Nematocytes composition showed that MPM II in A. florida was 95.56% and HI was 4.44%, while the composition of MPM II nematocytes in A. divaricata was 100% and HI was 0%.  Student t-test showed that the ratio of 2 average values of capsule length, capsule width, and MPM II stem length from two populations of A. florida and A. divaricata were not significantly different (P> 0.05).   It can be concluded that both types of A. florida and A. divaricata corals have different types and composition of nematocytes however their size dimensions are not significantly different.  Further studies are important to examine genetic and environmental factors to find out how much the kinship relationship between the two types of those coral.Keywords: Acropora florida, Acropora divaricata, HI, Scleractinia coral, MpM II, nematocytes
Co-Authors Antonius P Rumengan Billy Th Wagey Carolus P Paruntu Ferdinand F Tilaar Kayyan Mompala Sanjay Gagu Stevani Rawung Suria Darwasito Unstain N. W. J Rembet