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ON THE RELATIONSHIP BETWEEN AREA OF UPWELLING AND POTENTIAL FISHING ZONE IN MAKASSAR STRAIT Safruddin; Novia elvianti; Mukti Zainuddin; Amir Hamzah Muhiddin
Jurnal Ilmu Kelautan SPERMONDE Vol. 7 No. 2 (2021): Published February 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v7i2.13962

Abstract

This study aims to describe the relationship between the upwelling area and the ZPPI area of ​​skipjack tuna using the Generalized Additive Model (GAM) method and to map out the distribution pattern of skipjack in Barru waters, Makassar Strait. The research was conducted in November and December 2020, located in Barru waters, Makassar Strait. The research method used two methods by collecting primary data in the form of catches by following the purse seine fishing operation in Barru and secondary data in the form of satellite imagery data on sea surface temperature and chlorophyll-a. The data were analyzed using the GAM and upwelling area analysis. The upwelling area was obtained from the combination of the referred values of the two parameters. The results showed that sea surface temperature parameters had a significant effect on the catch of skipjack tuna with favored range of 28.5 - 29.7 oC.  Preferred chlorophyll-a ranged from 0.15 to 0.23 mg m-3. We found that the upwelling event in the Flores sea does not have a direct effect on the distribution pattern of skipjack tuna, there is probably a time lag required after upwelling in which in turn has an impact on the distribution of skipjack tuna in the southern Malassar Strait. Keywords: skipjack distribution, Makassar Strait, upwelling area, Flores Sea, potential fishing zone area
SPATIAL-TEMPORAL DISTRIBUTION OF CHLOROPHYLL-A IN SOUTHERN PART OF THE MAKASSAR STRAIT Wasir Samad Daming; Muhammad Anshar Amran; Amir Hamzah Muhiddin; Rahmadi Tambaru
Jurnal Ilmu Kelautan SPERMONDE Vol. 4 No. 1 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v4i1.3804

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.
PROFIL DISTRIBUSI DAN KONDISI MANGROVE BERDASARKAN PASANG SURUT AIR LAUT DI PULAU BANGKOBANGKOANG KECAMATAN LIUKANG TUPABBIRING KABUPATEN PANGKEP Nurul Fitri Hayati; Amir Hamzah Muhiddin; Muhammad Anshar Amran
Jurnal Ilmu Kelautan SPERMONDE Vol. 3 No. 1 (2017)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v3i1.2125

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
ANALISIS PERUBAHAN KEPADATAN ZOOPLANKTON BERDASARKAN KELIMPAHAN FITOPLANKTON PADA BERBAGAI WAKTU DAN KEDALAMAN DI PERAIRAN PULAU BADI KABUPATEN PANGKEP Rahmadi Tambaru; Amir Hamzah Muhiddin; Hasrul Suaidi Malida
Torani Journal of Fisheries and Marine Science Vol. 24 No. 3 (2014)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.149 KB) | DOI: 10.35911/torani.v24i3.236

Abstract

Basic of zoooplankton dependence on the phytoplankton to fulfill the requirement energy needs and creates acomplex relationship. The relationship of dependency between fitoplankton and zooplankton are very close,eventually can cause the changing in the zooplankton density in the time and space. The aims of study toaanalyze the changes in the zooplankton density on the phytoplankton abundance based on various time anddepth in the waters Badi Island of Pangkep Regency. The research has been carried out December 2009 toApril 2010. The results showed that changes in zooplankton density, not only because of the phytoplanktonabundance but also due to other factors such as sunlight. Keywords : density, abundance, zooplankton, phytoplankton, Badi Island
KESESUAIAN EKOWISATA MANGROVE DITINJAU DARI ASPEK BIOGEOFISIK KAWASAN PANTAI GONDA DI DESA LALIKO KECAMATAN CAMPALAGIAN KABUPATEN POLEWALI MANDAR Muhammad Sadik; Amir Hamzah Muhiddin; Marzuki Ukkas
Jurnal Ilmu Kelautan SPERMONDE Vol. 3 No. 2 (2017)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v3i2.3004

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
KARAKTERISASI 3D SUBSTRAT BENTIK PERAIRAN KARANG PULAU BONETAMBUNG MAKASSAR Muhammad Banda Selamat; Amir Hamzah Muhiddin; Marzuki Ukkas
Torani Journal of Fisheries and Marine Science Vol. 24 No. 2 (2014)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.149 KB) | DOI: 10.35911/torani.v24i2.223

Abstract

The objective of this study is to characterize benthic substrate of Bonetambung reef area using worldview 2 highresolution satellite imagery. About 14.273 depth spot were deploy to build bathimetric model of the study area. The correlation of pixel radiance value from satellite imagery and depth value from field measurement werebecame the basis to classify geomorphologic zone of shallow water area up to 7 meter depth. Between threeinterpolator tested, the natural neighbor interpolator has produced the best bathymetric model with root meansquare error 0.3 meter and benthic substrate coverage model with thematic accuracy 62%. These approach beable to recognize four substrate type in general, such as sand, seagrass, rubble and coral. Geomorphicsegmentation based on bathymetric profile and radiance value of worldview 2 imagery may also maps the reefflat, reef slope and lagoon area hence may support the benthic substrate modeling. This study showed us apotential technic to develop a modelling for juvenile fish transport at Bonetambung coral waters.Key words: benthic substrate bathymetry, worldview imagery, thematic accuracy
SPATIAL COMPOSITION OF BENTHIC SUBSTRATE AROUND BONTOSUA ISLAND Muhammad Banda Selamat; Mahatma Lanuru; Amir Hamzah Muhiddin
Jurnal Ilmu Kelautan SPERMONDE Vol. 4 No. 1 (2018)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v4i1.3801

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.