Article Per Year (5 Year)
p-Index From 2019 - 2024
0.659
P-Index
This Author published in this journals
All Journal JURNAL PESISIR DAN LAUT TROPIS
Roeroe, Kakaskasen A
Unknown Affiliation
Earth & Planetary Sciences

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
KOMUNITAS ASCIDIA DI PESISIR MALALAYANG DUA, TELUK MANADO, SULAWESI UTARA Malintoi, Adrianus; Rumengan, Inneke F M; Roeroe, Kakaskasen A; Warouw, Veibe; Rondonuwu, Ari B; Ompi, Medy
JURNAL PESISIR DAN LAUT TROPIS Vol 8, No 1 (2020): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.8.1.2020.27403

Abstract

Field survey on ascidian community was conducted along the coastal area of Malalayang Dua in order to find out species of ascidia, species abundance, and ascidian substrates. A survey method and quadrant transects were applied. Pictures were taken, while species and their substrates were sampled.  Species identification was based on morphological characteristics, while substrate type identification was based on ascidian species attachment.  The results shows that 21 ascidian species were found in the the coastal of Malalayang Dua.  Didemnum molle was the highest abundant species in the area, followed by Polycarpa aurata, Polycarpa sp.4. and Polycarpa sp.2.. Dead coral algaes (DCA) were found to be the most preferred  substrates by ascidians in the area. Keywords : ascidia, species, substrate, distribution, and abundance Survei lapangan terhadap komunitas ascidia dilakukan  di pesisir Malalayang Dua untuk mendapatkan data jenis, kelimpahan, dan substrat ascidia.  Metode yang digunakan yaitu metode survei jelajah dan transek kuadran. Identifikasi jenis ascidia dilakukan berdasarkan karakteristik morfologi.  Hasil penelitian ditemukan ada 21 jenis ascidia.  Substrat jenis death coral algae (DCA) merupakan substrat yang paling banyak ditempati ascidia. Kelimpahan ascidia tertinggi adalah Didemnum molle di pesisir Malalayang Dua, diikuti oleh Polycarpa aurata,   Polycarpa sp.4. dan Polycarpa sp.2. Death coral alga (DCA) ditemukan sebagai substrat yang paling disukai oleh ascidia di daerah itu. Kata Kunci : ascidia, spesies, substrat, distribusi, dan kelimpahan  
KAJIAN KONDISI KESEHATAN PADANG LAMUN DI PERAIRAN MOKUPA KECAMATAN TOMBARIRI KABUPATEN MINAHASA Bongga, Marthen; Sondak, Calvyn F A; Kumampung, Deisle RH; Roeroe, Kakaskasen A; Tilaar, Sandra Olivia; Sangari, Joudy
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.9.3.2021.36519

Abstract

Seagrass ecosystems services in the coastal waters are included as primary producers, nutrient recycler, bottom stabilizers, sediment traps, and erosion barriers. Gleaning fisheries in seagrass bed in Mokupa waters could cause damage on seagrass, that can be marked by changes in seagrass cover. The purposes of this study were to identify the types of seagrasses and to determine the health condition of seagrass bed ecosystem in Mokupa waters. The research method used in this study is quadrat transect method. Data collection was carried out by laid three transects (100 m) with distance between each transect was 50 m. A square frame (50×50 cm2) which is divided into 4 squares is placed on the right side of the transect, with 10 m distance between frame. This study found four types of seagrasses, namely Enhalus acoroides, Thalassia hemprichii, Halodule pinifolia and Halophila ovalis. E. acoroides have the highest percentage cover (16.19%) followed byT. hemprichii (6.91%), H. pinifolia (4.50%) and H. ovalis (1.56%) respectively. Seagrass cover in the study area is considered medium (26-50%) while the health condition was poor (29.25%).
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 Ari B Rondonuwu, Ari B Bongga, Marthen Coloay, Clive Griffen Indri Manembu Inneke F. M Rumengan Janny D Kusen Joshian N.W. Schaduw Kumampung, Deisle RH Malintoi, Adrianus Medy Ompi Sandra Tilaar Sangari, Joudy Sondak, Calvyn F A Veibe Warouw