Ruddy D Moningkey
Fakultas Perikanan dan Ilmu Kelautan, Universitas Sam Ratulangi, Manado, Sulawesi Utara

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PERTUMBUHAN POPULASI BULU BABI (Echinometra mathaei) DI PERAIRAN PESISIR KIMA BAJO KABUPATEN MINAHASA UTARA Moningkey, Ruddy D
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 6, No 2 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (796.271 KB) | DOI: 10.35800/jpkt.6.2.2010.164

Abstract

Sea urchins of different colors were collected 50 individuals each and measured their morphological characters. The data were then transformed to natural logarithm and analyzed using regression. The comparison of the regression line intercept for the shell diameter-height relationship did not show any difference, but there was a significant difference for the shell lenght-heigth relationship. The comparison between different colors exhibited variations in the shell morphology of each sea urchin population. The growth of black spined-sea urchin (Echinometra mathaei), was negative allometric; the fact that they were mostly found in the narrow crevices might have influenced their growth.
PERAN EKOLOGI BULU BABI DALAM KOMUNITAS RUMPUT LAUT DI PERAIRAN PESISIR KEMA KABUPATEN MINAHASA UTARA Moningkey, Ruddy D
JURNAL PERIKANAN DAN KELAUTAN TROPIS Vol 7, No 1 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (156.762 KB) | DOI: 10.35800/jpkt.7.1.2011.18

Abstract

A study on the functional role of the sea urchin, Salmacis belli, on seagrass bed near the coast of Kema, North Minahasa Regency, was done by analyzing the gut contents, the food preference, and the feeding periodicity. Sea urchins and plants were collected from the seagrass bed by snorkeling along a 100 M transect line with 30 quadrates randomly placed. The feeding periodicity was determined from the gut index in 24 hours with 3 hour intervals.  The results showed that the sea urchin S. belli fed mainly on seagrass Thallasia hemprichii, Enhalus acoroides and Halimeda opuntioa. The feeding periodicity data indicated that the sea urchins actively fed in the day. The grazing capacity of the sea urchin was not affected by their body size.  In high density, sea urchins could potentially cause negative impact on the seagrass bed (i.e., destruction of the meadow).
Sea Surface Temperature Of Manado Bay and Its Surroundings Paruntu, Kheren Patrisia; Rampengan, Royke M; Manengkey, Hermanto W. K; Mamuaya, Jane M; Windarto, Agung B; Moningkey, Ruddy D
Jurnal Ilmiah Platax Vol. 9 No. 2 (2021): ISSUE JULY-DECEMBER 2021
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.9.2.2021.34747

Abstract

Indonesia is a maritime country where as much as two-thirds of its territory is the ocean. The waters of Manado Bay and its surroundings which are located in North Sulawesi Province are waters with great potential. Bunaken National Park, which is an important tourist destination in Indonesia, is situated in Manado Bay. Sea surface temperature (SST) is an important factor that influences climate dynamics and also the life of marine organisms. The information regarding SST is needed not only on a local scale but also globally. SST is a key variable that underpins weather predictions, ocean forecasts, and ocean-atmospheric variability leading to the understanding and forecasting of short- and long-term climate variability. This study was conducted with the aim of describing and analyzing daily and seasonal SST in several places in the waters of Manado Bay and its surroundings. The study was conducted by using data from the Copernicus Marine Environment Monitoring Service (CMEMS), which is a global marine data provider institution. This digital data have scientific qualifications and is updated regularly. CMEMS provides maps and data for forecasting oceanographic conditions. Based on the study conducted, it was found that in 2020 the SST at the research location was varied according to the time and station determined. The highest SST in Manado Bay and the surrounding waters generally occurs around May, although the values are not exactly the same. The lowest SST value varies by station, but the value can be at a temperature slightly below 28oC and occurs around February to April.Keywords : SST; Manado Bay; Bunaken Island; CMEMSAbstrak Indonesia merupakan Negara maritim di mana sebanyak dua per tiga wilayah Indonesia adalah laut. Perairan Teluk Manado dan sekitarnya yang terletak di Provinsi Sulawesi Utara merupakan salah satu perairan yang sangat potensial. Taman Nasional  Bunaken yang menjadi tempat tujuan wisata yang penting di Indonesia.  Suhu permukaan laut (SPL) merupakan faktor penting yang mempengaruhi dinamika iklim dan juga kehidupan organisme laut. Kepentingan terhadap informasi menyangkut SPL dibutuhkan bukan hanya pada skala lokal, tetapi juga global.  SPL adalah variabel kunci yang mendukung prediksi cuaca, prakiraan laut, dan variabilitas atmosfer laut yang mengarah pada pemahaman dan prakiraan variabilitas iklim jangka pendek dan jangka panjang. Penelitian ini dilakukan dengan tujuan mendeskripsikan dan menganalisis SPL harian dan musiman di beberapa tempat pada kawasan perairan Teluk Manado dan sekitarnya.  Kajian dilakukan menggunakan data Copernicus Marine Environment Monitoring Service (CMEMS) yang adalah suatu lembaga penyedia data kelautan global.  Data digital ini memiliki kualifikasi ilmiah dan diperbarui secara berkala. CMEMS menyediakan  peta dan data  untuk prakiraan kondisi oseanografi. Berdasarkan kajian yang dilakukan, selama tahun 2020 SPL pada lokasi penelitian berada pada kisaran yang berbeda menurut waktu maupun stasiun yang ditetapkan. SPL tertinggi Teluk Manado dan perairan sekitarnya umumnya terjadi pada sekitar bulan Mei, walaupun dengan nilai yang tidak persis sama. Nilai SPL terendah berbeda menurut stasiun, tetapi nilainya bisa berada pada suhu sedikit di bawah 28oC dan terjadi pada sekitar bulan Februari sampai April.