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Journal : Jurnal Ilmu Kelautan Spermonde

SPATIAL-TEMPORAL DISTRIBUTION OF CHLOROPHYLL-A IN SOUTHERN PART OF THE MAKASSAR STRAIT Daming, Wasir Samad; Amran, Muhammad Anshar; Muhiddin, Amir Hamzah; Tambaru, Rahmadi
Jurnal Ilmu Kelautan SPERMONDE Vol 4, No 1 (2018)
Publisher : Jurnal Ilmu Kelautan SPERMONDE

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Abstract

Surface chlorophyll-a (Chl-a) distribution have been analyzed with seasonal variation during southeast monsoon in southern part of Makassar Strait and Flores Sea. Satellite data of Landsat-8 is applied to this study to formulate the distribution of chlorophyll concentration during monsoonal wind period. The distribution of chlorophyll concentration was normally peaked condition in August during southeast monsoon. Satellite data showed that a slowdown in the rise of the distribution of chlorophyll in September with a lower concentration than normal is likely due to a weakening the strength of southeast trade winds during June – July – August 2016. Further analysis shows that the southern part of the Makassar strait is likely occurrence of upwelling characterized by increase in surface chlorophyll concentrations were identified as the potential area of fishing ground.
Pengamatan Pasang Surut Untuk Penentuan Datum Ketinggian di Pantai Desa Parak, Kecamatan Bonto Matene, Kabupaten Selayar, Provinsi Sulawesi Selatan Mutiara, Indra; Muhiddin, Amir Hamzah
Jurnal Ilmu Kelautan SPERMONDE Vol 2, No 2 (2016)
Publisher : Jurnal Ilmu Kelautan SPERMONDE

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Abstract

Height of a point on land is determined by the position of sea level Average ( Mean Sea Level) . This paper investigates the Bench Mark local elevation measurements to Mean Sea Level tidal observations for 15 days at the village of Parak , District Bonto Matene, Selayar Regency, South Sulawesi Province . The results of the analysis of tidal by using the Admiralty Methode shows that  the value of Mean Sea Level in the study site is 119 cm, Spring Tide tidal current was 93.04 cm, and based on the value of Formzahl, the tides tipe on this beach is mixed tide prevailing semidiurnal. The measurement results indicate that the height of local Bench Mark to the Mean Sea Level is amounted to +1.927 m.
PROFIL DISTRIBUSI DAN KONDISI MANGROVE BERDASARKAN PASANG SURUT AIR LAUT DI PULAU BANGKOBANGKOANG KECAMATAN LIUKANG TUPABBIRING KABUPATEN PANGKEP Hayati, Nurul Fitri; Muhiddin, Amir Hamzah; Amran, Muhammad Anshar
Jurnal Ilmu Kelautan SPERMONDE Vol 3, No 1 (2017)
Publisher : Jurnal Ilmu Kelautan SPERMONDE

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Abstract

Mangrove forests are a community of tropical and subtropical beach vegetation, capable of growing and developing in tidalareas. This study aims to obtain information on the type and density of mangrove species by using remote sensing applicationsand to obtain mangrove distribution profile based on tidal. This research has been conducted in Bangkobangkoang IslandTupabbiring Sub-district of Pangkep Regency in September-October 2016. This research covers species inventory, mangrovedensity level using Landsat 8 image with Acquisition 6 June 2016 and mangrove distribution based on sea tides. The resultsshowed that mangrove vegetation density conditions in Bangkobangkoang island were generally in good condition. The typesof mangroves on the island of Bangkobangkoang are Rhizophora stylosa, Rhizophora apiculata, Rhizophora mucronata,Sonneratia alba, and Avicennia marina. The dominant mangrove species are Rhysophora stylosa and Rhizophora apiculata.Mangrove distributed at the highest tide with Rhyzophora stylosa type will be submerged while at lowest tide generally nomangrove is submerged except on the western island with the same type of Rhyzophora stylosaKey words: Mangrove, Landsat-8, Density, Ddistributions profile
SPATIAL COMPOSITION OF BENTHIC SUBSTRATE AROUND BONTOSUA ISLAND Selamat, Muhammad Banda; Lanuru, Mahatma; Muhiddin, Amir Hamzah
Jurnal Ilmu Kelautan SPERMONDE Vol 4, No 1 (2018)
Publisher : Jurnal Ilmu Kelautan SPERMONDE

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Abstract

Coral reefs and seagrass are natural fortress for small islands from waves and ocean currents. The spatial distribution of these benthic substrate should be known and monitored regularly. This study aims were to map existing benthic substrates on the reef flat of Bontosua Island, determine the spatial composition and develop index ratio. Benthic substrates were surveyed using geotagging technique. Their distribution were estimate using Quickbird image that was rectified and classified using ISOcluster method and validate by 240 selected photos. The seagrass were surveyed at 8 stasions to record percent cover and species composition. Depth profiles were track along 10 reef flat line segment. Bontosua Island has an elongated shape from South to Northwest. This study had produced a benthic substrate distribution map with thematic accuracy 76%. Total area able to map were 54.2 hectares. About 43% benthic substrates at Bontosua were mixture of coral rubble, seagrass and algae, 20% was mixture of rubble and algae, 16% dominated by seagrass, 13% mixture of sand and seagrass and 8% substrate were dominated by live coral. There were eight seagrass species found with average percent cover 37.2 ± 12.5 percent. The spatial ratio of live coral, seagrass and mixed substrate for West side reef flat was 2:20:49 and 1:9:9 for East side. This indicate that the distribution of benthic substrates on the West side is much wider than on the East side. This approach potentially applied to study the relationship between benthic substrate composition and the deformation of small islands.
KESESUAIAN EKOWISATA MANGROVE DITINJAU DARI ASPEK BIOGEOFISIK KAWASAN PANTAI GONDA DI DESA LALIKO KECAMATAN CAMPALAGIAN KABUPATEN POLEWALI MANDAR Sadik, Muhammad; Muhiddin, Amir Hamzah; Ukkas, Marzuki
Jurnal Ilmu Kelautan SPERMONDE Vol 3, No 2 (2017)
Publisher : Hasanuddin University

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Abstract

Ecotourism is a nature-based tourism activity that includes aspects of education and interpretation of the natural environment and community culture with ecological sustainability management. This study aims to determine the bioecological aspects of mangrove ecosystem as an object of ecotourism and to know the geophysical aspects of Gonda Beach as a supporter of mangrove ecotourism suitability on Gonda Beach. This research was conducted in November 2016 in Laliko Village, Campalagian Sub-district, Polewali Mandar Regency, including mangrove bioecological data collection including thickness, density, species and biota associated with mangrove and coastal geophysical data collection covering wide coastal measurement, coastal slope, depth, tidal, current, wave and substrate of waters. Result of research show potential of mangrove ecosystem to become ecotourism area with good condition of mangrove vegetation. The mangrove species in the ecosystem of the gonda mangroves are Bruguiera gymnorrhiza, Rhizophora stylosa, Rhizophora apiculata, Ceriops tagal, Sonneratia alba, Avicennia alba, Avicennia marina, Xylocarpus granatum and Xylocarpus moluccensis, and diverse biota such as fish, reptiles, birds and crabs as a tourist attraction . Gonda mangrove ecosystem area is a very suitable area to become a mangrove ecotourism area.Keywords: ecotourism, mangrove, conformity analysis, tourism object