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All Journal AQUATIC SCIENCE & MANAGEMENT JURNAL PESISIR DAN LAUT TROPIS
Hanny Tioho
Faculty of Fisheries and Marine Sciences, Sam Ratulangi University, Jl. Kampus Unsrat Bahu, Manado 95115
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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Journal : JURNAL PESISIR DAN LAUT TROPIS

 1 
POPULATION STRUCTURE OF Acanthaster planci ON THE REEF FLAT AT THE SOUTHERN PART OF BUNAKEN ISLAND Napitupulu, Patritia; Tioho, Hanny; Windarto, Agung
JURNAL PESISIR DAN LAUT TROPIS Vol 1, No 1 (2013): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.1.1.2013.1625

Abstract

The information on population structure of Acanthaster planci in Bunaken National Park (BNP) is urgent to be presented in order to be considered in decision making especially on coral reef management in BNP. The objectives of  this study was to examine the  population structure of A. planci, represented by the diameter and weight, number of arms, while the density, distribution and types of coral predation by reef animals in the Southern part of Bunaken Island also observed. Data were collected at the three locations namely, front reef flat (FRF), middle reef flat (MRF) and back reef flat (BRF) with total coverage area of ​​100 x 50 meters. Sixty two individuals (41 at night and 21 at day time) were found with a body diameter ranging between 14 – 28 cm, whereas body weight ranged from 80 – 700 gr, with the number of arms between 9 until 17. The density of A. planci during day time was 0.0042 ind/m2, while the night time was 0.0082 ind/m2, moreover the animal is generally spread aggregated. The results of this study indicated that the population of A. planci in BNP was an adult population with density is still relatively normal, despite an alert sign for the sustainability of coral reef ecosystems in the BNP.
VERTICAL DISTRIBUTION AND DENSITY OF CORAL FUNGIIDAE ON MALALAYANG WATERS Mampuk, Friska; Tioho, Hanny; Kusen, Janny D.
JURNAL PESISIR DAN LAUT TROPIS Vol 1, No 1 (2013): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.1.1.2013.1628

Abstract

Fungiidae known as a solitaire coral, attachment and also free living and has capability of individual move for migrate.  Their mobility allows them to expand the area, providing a hard substrate for coral recruitment and shelter for other invertebrates.  The objective of this study was to examine the density and distribution of fungiid corals in Malalayang waters. The data were collected from September to December 2012 at four different areas.  The results of this study showed that the highest density of fungiid corals were occurred on the front reef study site and mostly by Fungia danai (0,62 ind/m2), compared with other species such as Herpolitha limax (0,25 ind/m2), F. paumotensis (0,19 ind/m2), F. fungites (0,18 ind/m2), F. granulosa (0,18 ind/m2) and with an aggregated pattern of distribution.   Fungiid corals found in this study were mostly relatively more on the reef flat compared to the reef slope.
Co-Authors Agung Windarto Carolus Paulus Paruntu Friska Mampuk Hendra Patrich Janny D. Kusen Patritia Napitupulu