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All Journal AGRISAINS AQUATIC SCIENCE & MANAGEMENT e-Journal BUDIDAYA PERAIRAN JURNAL PESISIR DAN LAUT TROPIS JURNAL ILMIAH PLATAX JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI
Joshian N.W. Schaduw
Fakultas Perikanan dan Ilmu Kelautan, Universitas Sam Ratulangi, Manado, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Environmental Science

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STRUKTUR KOMUNITAS DAN ZONASI VEGETASI MANGROVE DESA DARUNU KECAMATAN WORI KABUPATEN MINAHASA UTARA Upara, Udin; Kusen, Janny Dirk; Sondak, Calvyn F.A.; Schaduw, Joshian N.W; Tilaar, Sandra Olivia; Lasabuda, Ridwan
JURNAL PESISIR DAN LAUT TROPIS Vol 9, No 1 (2021): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.1.2021.33957

Abstract

Mangrove ecosystem is a collection of distinctive plant types that contained in tropical and subtropical coastal region. The purpose of research was to find out the community structure and mangrove zonation at Darunu Village, Wori District, North Minahasa Regency. The research was conducted by   the quadrant transect line method. It was done by pulling a straight line, perpendicular from the outermost mangrove area to the land direction, along 100 m by determining three data retrieval Station. To determine the condition of mangrove then density, species frequency, species coverage, important value index, diversity index and equality types were analyzed. The result found 5 mangroves species, namely: Rhizophora apiculata, R. mucronata, Sonneratia alba, Bruguiera gymnorrhiza and Avicennia officinalis. The highest density value was R.apiculata, as well as species frequency, while the species coverage value  found in S. alba. The diversity value found at Station 2. The zonation of mangrove vegetation in Darunu village respectively, at Station 1 and 2 in the front was overgrown by R.apiculata species with sandy mud substrate.  The Station 3 was overgrown by S.alba species with sandy mud. Generalyl, this location substrate contains of sandy mud and mud.Keywords : Mangrove, community structure, zonation.
IDENTIFIKASI SAMPAH ANORGANIK PADA EKOSISTEM MANGROVE DI DESA LESAH KECAMATAN TAGULANDANG KABUPATEN SITARO Loliwu, Stenly J; Rumampuk, Natalie DC; Schaduw, Joshian NW; Tilaar, Sandra O; Lumoindong, Frans; Wagey, Billy Th.; Rondonuwu, Ari B
JURNAL PESISIR DAN LAUT TROPIS Vol 9, No 2 (2021): JURNAL PESISR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.2.2021.34852

Abstract

Based on the material content, waste is grouped into two types, namely organic waste (waste derived from animal, plant and human parts) and inorganic waste (waste derived from materials such as metal, glass, styrofoam, plastic and rubber). Inorganic waste is one of the coastal pollution problems, yet information about inorganic waste in mangrove ecosystem was relatively low, especially at Lesah Village, Tagulandang Sub district, Sitaro Regency. This study aims to determine the distribution of inorganic waste by type and to analyze the characteristic of inorganic waste based on the amount of size and weight found. The method used in this research is the line transects method at 3 different stations. The results showed that the types of marine debris that found were plastic, rubber, metal, and glass waste and there were 2 characteristics, namely mega-debris and macro-debris. Of the various types of debris obtained, plastic is the most commonly found, 161 items/23.329m2 (69.099 Items/ha) with a total weight of 1357.75 gram/ha and a total size of 1938.93 cm/ha. Followed by rubber debris as many as 5 items/23.329m2 (2.146 items/ha) with a total weight of 159.309 gram/ha and a total size of 59.871 cm/ha. Then, glass debris as many as 4 items/23.329m2 (1.717 items/ha) with a total weight of 402,159 grams/ha a total size of 31.030 cm/ha. Whereas, metal debris is the lowest value found as many as 3 item/23.329m2 (1.288 items/ha) with a total weight of 67.622 gram/ha and a total size of 19.528 cm/ha.Keywords: Inorganic waste, Mangrove Ecosystem, Desa Lesah
Impact of tropical cyclone Amang on variability of wind speed, salinity, sea surface temperature, and their relationship to chlorophyll-a in sea waters of Sangihe Island Rachim, M. Hatta; Schaduw, Joshian N.W.; Wantasen, Adnan S.; Patty, Wilhelmina; Ngangi, Edwin L.A
AQUATIC SCIENCE & MANAGEMENT Vol 9, No 2 (2021): OCTOBER
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.v9i2.34589

Abstract

High concentrations of chlorophyll-a can be used to predict where fish gather. On the other hand, tropical cyclones are one of the triggering factors for vertical stirring and upwelling that cause fertility of waters. The Sangihe Island area is not an effective area for the formation of tropical cyclones. However, due to its geographical location with a tropical cyclone area and trajectory, the potential for disturbances caused by cyclones is impactful on Sangihe Island. The distribution of wind speed, salinity, sea surface temperature and chlorophyll-a concentration can be detected by satellite remote sensing imagery. This study aims to analyze the impact of Tropical Cyclone Amang on the variability of wind speed, salinity, sea surface temperature and on the concentration of chlorophyll-a in Sangihe Island. This study useswind speed, salinity, sea surface temperature and chlorophyll-a data during the Amang Tropical Cyclone (January 6-27, 2019) from the AQUA-MODIS satellite imagery. The results show that the relationship between wind speed and chlorophyll-a concentration has impact on other parameters where both parameters showed a strong correlation value. It was also showed on the relationship between sea surface temperature and chlorophyll-a.However, the relationship between salinity and chlorophyll-a concentration showed lowest effect among those parameters.Indonesian title: Dampak siklon tropis Amang terhadap variabilitas kecepatan angin, salinitas, suhu permukaan laut, dan hubungannya dengan klorofil-a di perairan laut Pulau Sangihe
KEANEKARAGAMAN DAN KELIMPAHAN FILUM ECHINODERMATA PADA ZONA INTERTIDAL MOLAS KECAMATAN BUNAKEN KOTA MANADO Jambo, Novia A; Kaligis, Erly Y; Kumampung, Deslie RH; Darwisito, Suria; Schaduw, Joshian NW; Pratasik, Silvester B
JURNAL PESISIR DAN LAUT TROPIS Vol 9, No 2 (2021): JURNAL PESISR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.2.2021.35771

Abstract

Echinoderms are one of the main components of marine biodiversity that play an important role in ecosystem function. The purpose of this study to determine the diversity, abudance,dominance, frequency and important value index of the phylum Echinoderm.The method use in this research was cruising method and the quadratic transect method. The results of this study on intertidal zone of Molas obtained as a whole includes four classes, namely Asteroidea, Echinoidea, Ophiuroidea and Holothuroidea with a total of 12 species. Based on data analysis used the quadratic transect method, it was obtained: at station I H' = 1.666, the highest species abundance index is Protoreaster nodosus at 1.133 ind/m2 and relative at 40.48%, C = 0.245 and the highest relative dominance of P. nodusus was 66.90%, the highest species frequency index is P. nodusus of 0.467 and a relative of 33.33% and the highest important value index is P. nodusus of 140.71% while at station II it is obtained H' = 1,384, The highest species abundance index is Diadema setosum at 3.067 ind/m2 and relative 55.42%, C = 0.359 and the highest relative dominance is D. setosum at 85.63%, the highest species frequency index is P. nodusus at 0.4 and relative at 27. 27% and the highest important value index of D. setosum was 159.23%.Keywords: Echinoderms, Diversity, Abundance, Dominance, Frequency, Important Value Index
STRUKTUR KOMUNITAS DAN PERSENTASE TUTUPAN LAMUN DI MARINE FIELD STATION UNIVERSITAS SAM RATULANGI Senduk, Anastasia V; Schaduw, Joshian N W; Warouw, Veibe; Wagey, Billy Th.; Rimper, Joice RTSL; Lohoo, Anneke V
JURNAL PESISIR DAN LAUT TROPIS Vol 9, No 3 (2021): JURNAL PESISR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.3.2021.38583

Abstract

In the world there are 60 species of seagrass, and 12 types are found in Indonesia. This study aims to determine the results of the description of the community structure and the percentage cover of seagrass in the waters of the Marine Fields Station, observations were made at 2 (ST.1 & ST.2) stations using themethod seagrass watch and the results of data analysis of the community structure using the equation formula from Cox, 1967. In the waters of the Marine Fields Station, there are 6 species, namely Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halodule pinifolia, and Halophile ovalis. The results of the percentage of seagrass cover at ST.1 were 58.85% and ST.2 53.13% and the average value obtained from these 2 stations was 55.99%. Overall, the community structure of ST.1 species Thalassia hemprichii has the highest important value index of 80.66%. And in ST.2 Syringodium isoetifolium which has the highest important value index is 93.27%. Parameters in the waters of Maine Field Station, namely pH, salinity, temperature, substrate are good. Keywords: Seagrass, Percentage Cover, Community Structure 
KELIMPAHAN DAN KEANEKARAGAMAN IKAN KARANG di DAERAH TERUMBU KARANG PULAU LIHAGA LIKUPANG MINAHASA UTARA Coloay, Clive Griffen; Schaduw, Joshian N.W.; Kusen, Janny D; Roeroe, Kakaskasen A; Manembu, Indri; Rondonuwu, Ari B
JURNAL PESISIR DAN LAUT TROPIS Vol 10, No 1 (2022): JURNAL PESISR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.10.1.2022.39106

Abstract

Lihaga Island is located in West Likupang District, North Minahasa Regency. When the Likupang area has been designated as a Special Economic Zone (SEZ), and one of the five super priority tourist destinations based on Government Regulation Number 84 of 2019. This indicates that the waters of Lihaga Island will become a diving tourism destination. Data on the abundance and diversity of reef fish in these waters need to be known. The method used in this research is the Underwater Visual Census. The data obtained is then analyzed for abundance index, diversity index, uniformity index and dominance index using the Microsoft Excel program. The results show that reef fish in the waters of Lihaga Island are categorized as abundant, according to Djamali and Darsoono. (2005) with the number found > 50 individuals, dominated by the species Chromis margaritifer from the family Pomacentridae or commonly known as 'damselfishes'. The results of the analysis were based on the total number of reef fish recorded at 3 observation stations, namely the abundance index scored 1,780 ind/m2, the diversity index was in the high category with a value of H`>3.0 which was 3.15, then the uniformity index was included in the unstable category with a value <0.75. which is 0.73 and the dominance index value is categorized as low with a value of 0.10 or <0.50.  Keywords: Likupang, Lihaga Island, reef fish, underwater visual census.
Co-Authors Adnan Wantasen Agung B. Windarto, Agung B. Andaki, Jardie Angmalisang, Ping Astony Anthoni, Annice Antonius P Rumengan Antonius Rumengan Ari B Rondonuwu, Ari B Ari Rondonuwu Asman, Indra Babo, Prengky P Bacmid, Kiki Nadila Bengkal, Krisandy Billy Theodorus Wagey Carolus Paulus Paruntu Coloay, Clive Griffen Darwisito, Surya Daud, Devidson Deiske Adeliene Sumilat, Deiske Adeliene Dietriech Geoffrey Bengen Djaguna, Asshidiq Donny M Bessie Edwin D Ngangi Emil Reppie Erly Y Kaligis Frans Lumoindong, Frans Fredinan Yulianda Hens Onibala Hermanto W. K. Manengkey Indri Manembu Isdradjad Setyobudiandi Iskandar, Angelitha O.T Jambo, Novia A Janny D Kusen Janny Dirk Kusen, Janny Dirk Joppy Mudeng Kahar, Muhammad Gibran Kaligis, Erli Y Kamagi, Jongky W.A. Kase, Ardy Kumampung, Deislie R H Kumampung, Deslie RH Kusen, Janny Lohoo, Anneke V Loliwu, Stenly J Lumingas, Laurence Mamuaja, Jane M. Manengkey, Hermanto W.K. Manopo, Victoria EN Mantiri, Desy M. H Marbun, Andreas Markus T. Lasut Medy Ompi Natalie D Rumampuk Nity, Elroi Pangemanan, Jeannete F Patuwo, Nafiri C. Paulus, James J H Pelle, Wilmy Pelle, Wilmy Etwil Rachim, M. Hatta Rangan, Jety Ridwan Lasabuda Rimper, Joice RTSL Robert A. Bara Roeroe, Kakaskasen A Roger R Tabalessy Rumampuk, Natalie D.C Rumampuk, Natalie DC Sambali, Haryani Sanadi, Troy Sandra Tilaar Sasauw, Juwinda Senduk, Anastasia V Silvester B Pratasik Sinjal, Chatrien Luzianna Sondak, Calvyn Sondak, Calvyn F A Sondak, Calvyn F.A Sondak, Calvyn F.A. Sondakh, Calvyn Suria Darwisito, Suria Upara, Udin Veibe Warouw Verisandria, Rio Watumlawar, Yunus Wilhelmina Patty Wilmy E Pelle Yostan Lahabu, Yostan