Articles

Found 8 Documents
Search

Oceanographic Condition and Sediment Dynamic in Coastal Lanuru, Mahatma
TORANI Vol 19, No 2 (2009)
Publisher : Fakultas Ilmu Kelautan dan Perikanan UNHAS

Show Abstract | Original Source | Check in Google Scholar | Full PDF (23.581 KB)

Abstract

Oceanographic and sediment dynamic study has been carried out in coastal waters of the Mekongga Gulf in November 2007 and May 2008. The objective of the study is to investigate oceanographic properties and sediment dynamic of the coastal water of Mekongga Gulf. Six stations along coast of Mekongga Gulf from Huko-Huko River to Oko-Oko River were chosen for measurements of temperature, salinity, pH, and dissolved oxygen, current, wave, tide, sediment, deposition/sedimentation rate. The results show that temperatures varied from 29.3 to 33.0 oC. Keywords: Oceanographic, sediment dynamic, Mekongga Gulf, Southeast SulawesiTemperature were were higher in November 2007 (dry monsoon) than in May 2008 (wet monsoon). Salinity varied from 27.1 to 32.2 ‰ with lower salinity observed in May 2008 compared to those observed in November 2007 due to increase precipitation during wet monsoon period. The type of tide at study site is Mixed Tide Prevailing Semidiurnal with tidal range of 2.38 m. The significant wave height is highest at Station OSS6 (Oko-Oko river mouth) both in November 2007 (0.39 m) and May 2008 (0.3 m), while smallest wave height occurred at Station OSS5 (Sepura Bay). Current velocities during study period were relatively low and vary spatially and temporally following wind regime and tidal cycle. Sediment at the study site is dominated by terrigeneous sediments with grain diameters varied from very fine sand to coarse sand. The deposition rate at the study site varied from 6.9 g m -2 d-1 to 190.1 g m-2 d-1. Deposition rates were higher during wet monsoon compared to those in dry monsoon at Stations OSS1 and OSS6 due to increase sediment load to the coastal area during rainy/wet monsoon.
BED SEDIMENT DISTRIBUTION IN THE RIVER ESTUARY AND COASTAL SEA OF MALILI (SOUTH SULAWESI, INDONESIA) Lanuru, Mahatma; Yusuf, Syafyudin
Jurnal Ilmu Kelautan SPERMONDE Vol 4, No 2 (2018)
Publisher : Hasanuddin University

Show Abstract | Original Source | Check in Google Scholar | Full PDF (363.398 KB)

Abstract

Bed sediment characteristics and distribution is one of the important parameters in determining the management plan and utilization of estuarine and coastal waters.  The objective of this study was to analyze sediment distribution and determine dominant oceanographic factors controlling the distribution of bed sediment in the river estuary and coastal sea of Malili. Sediment samples were collected using a grab sampler at ten stations, namely four stations in the river estuary and six stations in the adjacent coastal sea for grain size and sediment organic content analysis. The results showed that the bed sediment along the river estuary consisted of silt, very fine sand, fine sand, and medium sand with organic content varying from 1.31 to 7.18 %. In the coastal sea, bed sediment was dominated by silt with a higher organic content of 2.25 - 7.31%
SPESIES TUMBUHAN ASLI, INTRODUKSI DAN INVASIF DI PULAU BARRANGCADDI SULAWESI SELATAN Priosambodo, Dody; Amri, Khairul; Lanuru, Mahatma
Jurnal Ilmu Kelautan SPERMONDE Vol 5, No 1 (2019)
Publisher : Hasanuddin University

Show Abstract | Original Source | Check in Google Scholar | Full PDF (136.719 KB)

Abstract

Penelitian tentang inventarisasi spesies tumbuhan di pulau Barrangcaddi yang berpenduduk padat telah dilakukan. Tujuan penelitian ini adalah untuk mengetahui jenis-jenis tumbuhan asli, tumbuhan introduksi dan tumbuhan invasif di Pulau Barrangcaddi. Kegiatan sampling dilakukan dengan metode purposive sampling. Data diambil dengan mencatat semua spesies tumbuhan yang ditemukan selama penjelajahan di pulau Barrangcaddi. Seluruh sampel di foto. Sampel tumbuhan yang tidak diketahui namanya, di ambil bagian-bagiannya, kemudian dikoleksi dan diidentifikasi di laboratorium Ilmu Lingkungan dan Kelautan, Departemen Biologi, Fakultas MIPA, Universitas Hasanuddin. Identifikasi sampel menggunakan buku: An Annotated Check-List of The Vascular Plants of The South China Sea and Its Shores oleh Turner et al. (2000) dan Mangrove Guidebook for Southeast Asia oleh Wim Giesen et al. (2007) untuk spesies hutan pantai; Tropical flowering plants: a guide to identification and cultivation oleh Kirsten Albrecht Llamas (2003) untuk spesies tanaman hias dan tanaman budidaya/introduksi serta Nonnative Invasive Plants of Pacific Coast Forest. A Field Guide for Identification oleh Gray et al. (2011) dan Guide to The Naturalized and Invasive Plants of Southeast Asia oleh Arne Witt (2017) untuk spesies tumbuhan invasif. Dari hasil penelitian di pulau Barrangcaddi tercatat sebanyak 142 spesies tumbuhan dari 51 suku. Sebagian besar didominasi oleh tanaman hias dan budidaya (introduksi) dengan 103 spesies dari 42 suku diikuti spesies asli (native species) dengan jumlah 29 spesies dari 19 suku. Spesies invasif tercatat paling sedikit dengan jumlah 10 spesies dari 5 suku. Sebagian besar tutupan vegetasi dari spesies asli telah hilang akibat alih fungsi lahan menjadi permukiman.
SEDIMENT DEPOSITION IN A SOUTH SULAWESI SEAGRASS BED Lanuru, Mahatma; Fitri, Ramdina
Marine Research in Indonesia Vol 33, No 2 (2008)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Original Source | Check in Google Scholar | Full PDF (6450.898 KB)

Abstract

Deposition of suspended sediment was measured with sediment traps in shallow coastal waters colonized by Thallasia dominated seagrass in Pannikiang Island, South Sulawesi (Indonesia). The primary objective of this study was to compare the amounts of sediment deposition inside seagrass beds and in adjacent unvegetated area. The traps were placed in a seagrass bed (Station I, II, and III) and in an adjacent unvegetated area (Station IV) measuring the sediment flux on the seabed. The sediment fluxes due to deposition were significantly higher at stations I and II (P < 0.05) and station III (P < 0.01) than at station IV (unvegetated area). Results of this study suggest that sediment deposition was promoted by dense shoots of seagrass. The study provides quantitative evidence for the importance of seagrass bed as sites of sedimentation of fine particles.  
Konsentrasi Bahan Organik dalam Sedimen Dasar Perairan Kaitannya dengan Kerapatan dan Penutupan Jenis Mangrove di Pulau Pannikiang Kecamatan Balusu Kabupaten Barru Lestaru, Ayu; Saru, Amran; Lanuru, Mahatma
Proceeding Simposium Nasional Kelautan dan Perikanan No 5 (2018)
Publisher : Proceeding Simposium Nasional Kelautan dan Perikanan

Show Abstract | Original Source | Check in Google Scholar | Full PDF (678.873 KB)

Abstract

Penelitian telah dilaksanakan pada Agustus 2017. Lokasi penelitian Pulau Pannikiang Kabupaten Barru. Tujuan untuk mengetahui perbedaan kandungan bahan organik disetiap jenis mangrove dan hubungan kerapatan dan penutupan jenis mangrove dengan kandungan bahan organik di sedimen. Pengambilan data mangrove dan sampel bahan organik berdasarkan jenis mangrove dominan di pulau pannikiang. Pengambilan data dengan menggunakan metode transek (Line transect) dengan luas plot 10 x 10 meter pada ke tiga stasiun. Hasil penelitian menunjukkan bahwa pada jenis mangrove dominan dan tumbuh berkelompok antar jenis mangrove di pulau Pannikiang tidak berbeda kandungan bahan organiknya sedangkan stasiun jenis mangrove dengan stasiun yang tidak ditumbuhi mangrove berbeda kandungan bahan organiknya. Hal ini dikarenakan bahwa keberadaan bahan organik dipengaruhi oleh kerapatan dan penutupan jenis mangrove. Hasil pengukuran kerapatan di setiap jenis mangrove tergolong dalam kategori sedang yang berkisar antara 0,06 – 0,12 (individu/m2). Kandungan bahan organik tertinggi pada stasiun 1 jenis mangrove Rhizophora apiculata adalah 32,83% dan stasiun 3 Rhizophora stylosa 30,57%. Hubungan kerapatan jenis mangrove dengan kandungan bahan organik menggunakan analisis linear diperoleh nilai koefisien determinasi (R2) sebesar 0,353, sedangkan nilai koefisien korelasi diperoleh sebesar 0,594 yang berarti berkorelasi positif antara kandungan bahan organik dengan kerapatan jenis mangrove. Kata kunci: Ekosistem Mangrove, Jenis Sedimen dan Kandungan Bahan Organik di Pulau Pannikiang 
Bed sediment distribution in the river estuary and coastal sea of Malili (South Sulawesi, Indonesia) Lanuru, Mahatma; Yusuf, Syafyudin
Jurnal Ilmu Kelautan SPERMONDE Vol 4, No 2 (2018)
Publisher : Jurnal Ilmu Kelautan SPERMONDE

Show Abstract | Original Source | Check in Google Scholar | Full PDF (20.847 KB)

Abstract

Bed sediment characteristics and distribution is one of the important parameters in determining the management plan and utilization of estuarine and coastal waters.  The objective of this study was to analyze sediment distribution and determine dominant oceanographic factors controlling the distribution of bed sediment in river estuary and coastal sea of Malili. Sediment samples were collected using a grab sampler at ten stations, namely four stations in the river estuary and six stations in the adjacent coastal sea for grain size and sediment organic content analysis. The results showed that the bed sediment along the river estuary consisted of silt, very fine sand, fine sand, and medium sand with organic content varying from 1.31 to 7.18 %. In the coastal sea, bed sediment was dominated by silt with a higher organic content of 2.25 - 7.31%
ANALISIS KESESUAIAN LAHAN UNTUK PENGEMBANGAN BUDIDAYA RUMPUT LAUT DI GUSUNG BATUA, PULAU BADI KABUPATEN PANGKEP, SULAWESI SELATAN Pong-Masak, Petrus Rani; Jaya, Andi Indra; Hasnawi, Hasnawi; Pirzan, Andi Marsambuana; Lanuru, Mahatma
Jurnal Riset Akuakultur Vol 5, No 2 (2010): (Agustus 2010)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

Show Abstract | Original Source | Check in Google Scholar | Full PDF (591.376 KB)

Abstract

Budidaya rumput laut sangat prospektif menjadi alternatif usaha oleh masyarakat pesisir dan pulau-pulau kecil. Pemilihan lokasi budidaya melalui kegiatan inventarisasi dan pemetaan potensi sumberdaya lahan merupakan tahapan awal yang penting dilakukan. Penelitian ini bertujuan menentukan kelayakan lahan perairan untuk pengembangan budidaya rumput laut di Gusung Batua, Pulau Badi Kabupaten Pangkep. Penelitian dilakukan dengan metode survai untuk mendapatkan data primer dengan pendekatan SIG dan data sekunder. Data dianalisis dengan metode PATTERN berdasarkan skoring dari beberapa variabel kunci untuk menentukan tingkat kelayakan lahan bagi pengembangan budidaya rumput laut. Hasil penelitian menunjukkan bahwa perairan Gusung Batua di Pulau Badi memiliki potensi lahan pengembangan budidaya rumput laut dengan tingkat kelayakan tinggi seluas 42,1 ha (4,2%), tingkat kelayakan sedang 660,3 ha (66,6%), dan tingkat kelayakan rendah 156,8 ha (15,8%).Seaweed cultures were very prospective for alternative job by community in coastal and small Island. Site selection of culture by inventory and mapping activity of waters resource make up initial stage of important done. This research aimed to determine of waters suitable for development of seaweed culture in Batua Reef, Badi Island, Pangkep Regency, South Sulawesi. Research conduct by survey method to obtain primary data with Geographical Information System (GIS) and secondary data. Data were analysis with PATTERN (Planning Assisstance Through Technical Evaluation of Relevant Numbers) method based on scoring of key variables to determine of suitable level of waters for development of seaweed culture. Result of research showed that Batua Reef waters have area potential for seaweed culture with most suitable were 42,1 ha (4.2%) as wide, moderately suitable were 660.3 ha (66.6%) as wide, and low suitable were 156.8 ha (15,8%) as wide.
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

Show Abstract | Original Source | Check in Google Scholar | Full PDF (503.498 KB)

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.