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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)

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. Â

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)

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.

SPATIAL COMPOSITION OF BENTHIC SUBSTRATE AROUND BONTOSUA ISLAND Muhammad Banda Selamat; Mahatma Lanuru; Amir Hamzah Muhiddin
Jurnal Ilmu Kelautan SPERMONDE VOLUME 4 NOMOR 1, 2018
Publisher : Hasanuddin University

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

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 Â± 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.

SEAGRASS DISTRIBUTION BASED ON THEIR SEDIMENT CHARACTERISTICS IN PUNTONDO WATERS, TAKALAR DISTRICT, SOUTH SULAWESI, INDONESIA MUH.AQRAM RAMADHAN; Yayu A. La Nafie; Syafiuddin; Supriadi Mashoreng; Mahatma Lanuru
Jurnal Ilmu Kelautan SPERMONDE VOLUME 7 NOMOR 2, 2021
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v7i2.14167

Seagrass distribution is influenced by many factors, including sediment characteristics. This study aims to determine the distribution of seagrass based on their sediment characteristics. Observations and sampling were carried out in the waters of the Puntondo Bay, Takalar Regency. This study observed the cover and density of seagrass species, water depth, water transparency, sedimentâ€™s total organic matter and size of sediment grains. There were five species of seagrass found in the area, namely Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis and Syringodium isoetifolium with sediment types of medium sand and coarse sand. Results of the regression analysis showed that the relationship between sediment particle size and seagrass density with theÂ highest coeficient determination (R2=0,3346) was in seagrass Cymodocea rotundata, whereas the lowest was in Â Syringodium isoetifolium. Keywords: Seagrass, Puntondo, aters, Sediment grain size, Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Halophila ovalis, Syringodium isoetifolium.

Konsentrasi Bahan Organik dalam Sedimen Dasar Perairan Kaitannya dengan Kerapatan dan Penutupan Jenis Mangrove di Pulau Pannikiang Kecamatan Balusu Kabupaten Barru Ayu Lestaru; Amran Saru; Mahatma Lanuru
Prosiding Simposium Nasional Kelautan dan Perikanan Vol. 5 (2018): PROSIDING SIMPOSIUM NASIONAL V KELAUTAN DAN PERIKANAN UNHAS
Publisher : Fakultas Ilmu Kelautan dan Perikanan (FIKP), Universitas Hasanuddin

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

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

IDENTIFICATION OF MARINE DEBRIS IN THE BEACH OF KODINGARENG LOMPO ISLAND, MAKASSAR CITY Shinta Werorilangi; Pricilia Gaby Angelica; Mahatma Lanuru; Abdul Rasyid
Jurnal Ilmu Kelautan SPERMONDE VOLUME 8 NOMOR 1, 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v8i1.19225

Marine debris may become a serious threat because of the increasing in its quantity every day, especially in marine areas around the world. The purpose of this study was to identify the amount, weight, and type of marine debris and to determine the abundance based on the amount and weight present in the coastal area on Kodingareng Lompo Island, Makassar City. This research was carried out during the ebb of the east monsoon period, i.e., in June 2021. The most common types of waste found in the three observation locations were plastic waste. The abundance of waste based on the amount is most commonly found at station 2, which is located near a residential area, so that most of the waste at the station is household waste. Meanwhile, the greatest abundance of weight was also observed at station 3 which has the widest intertidal area and the majority of the waste there came from a type of cloth which was larger than other wastes. Station 3 also has a faster flow rate than the other stations. The existing waste facilities on Kodingareng Lompo Island in the form of garbage motorbikes and Garbage Banks in general have not been effective. Several factors that can also worsen, i.e., lack of understanding, low awareness, and laziness of the community in managing their waste, people prefer to throw garbage into the sea, so the accumulation of marine waste in the coastal area of Kodingareng Lompo Island may have a negative impact in various fields of life.

TSS ASSIMILATION CAPACITY IN THE MAMUJU RIVER ESTUARY Rahmat Januar Noor; Mahatma Lanuru; Ahmad Faizal; Fathuddin .
JFMR (Journal of Fisheries and Marine Research) Vol 4, No 3 (2020): JFMR VOL 4 NO 3
Publisher : JFMR (Journal of Fisheries and Marine Research)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2020.004.03.2

The Mamuju River Estuary is an estuary whose role is to protect coastal ecosystems (mangroves, seagrasses, coral reefs) from the negative effects of intensification of land clearing upstream and coastal. Land clearing for various human needs encourages erosion resulting in high TSS (Total Suspended Solid) concentrations in river water bodies. This study aimed to determine the assimilation capacity of the Mamuju River estuary on TSS pollutants. The results showed that TSS concentrations still met the quality standard for marine biota (mangroves: <80 mg / l) with a lower distribution pattern when getting further away from the river mouth. The flushing time at the study site is 5.6 days so the river and seawater exchange is ± 65 times per year. The pollutant load was 586.11 tons/month. The value of the assimilation capacity reaches 255.57 tons/month. Based on these results it can be concluded that the Mamuju River estuary has experienced an overload of sediment.

DISTRIBUTION OF BOTTOM SEDIMENT BEFORE AND AFTER RECLAMATION AT CENTER POINT OF INDONESIA (CPI) MAKASSAR CITY Firly Maulana; Amir Hamzah Muhiddin; Mahatma Lanuru; Wasir Samad; Marzuki Ukkas
Jurnal Ilmu Kelautan SPERMONDE VOLUME 9 NOMOR 1, 2023
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v9i1.19929

Characteristics and distribution of bottom sediment is one of the important parameters in determining the management plan and land use in coastal areas. The purpose of this study was to determine the condition of the distribution of bottom sediments and to compare the changes that occurred in the distribution of bottom sediment before and after the reclamation of the Center Point of Indonesia (CPI) in Makassar City. Sediment sampling was carried out using a grab sampler at four stations, namely stastions on the island adjacent to the reclamation area and two other stations in the water around the reclamation area. The results showed that the bottom sediment in the waters around the reclamation area consisted of coarse sand and medium sand with an organic matter content of 14.92% in the sediment. On the islands adjacent to the reclamation area, the bottom sediments are move varied, consisting of coarse sand, medium sand and fine sand with lower organic matter content of 4.92% to 5.38%.

MACROZOOBENTHOS DIVERSITY AS A BIOINDICATOR OF WATER QUALITY AROUND THE CENTER POINT OF INDONESIA (CPI) Fathin Nur Rahman; Rahmadi Tambaru; Mahatma Lanuru; Yayu A Lanafie; Muh. Farid Samawi
Jurnal Ilmu Kelautan SPERMONDE VOLUME 9 NOMOR 1, 2023
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v9i1.19960

Benthos are invertebrate animals that live at the bottom of the waters. One biota that can be used as a biological parameter in determining the quality of a waters is macrozoobenthos. The waters around the Center Point of Indonesia (CPI) are one of the waters that have received a lot of additional organic matter and other pollutant materials through the estuaries of the canals that flow into the waters of Losari Beach. The study was conducted by sampling macrozoobenthos at each station using Ejkman Grab at each station 3 times sampling then sieved using a benthos sieve measuring 1 mm. In addition, measurements of environmental factors were carried out at each station with 3 replications directly in the field and analyzed in the laboratory. The results of the macrozoobenthos sampling study obtained 4 macrozoobenthos classes found at the study site, namely the Gastropod Class (4 species), the Crustacea Class, the Ophiuroidea Class, and the Oligochaeta Class each 1 species. The highest diversity and abundance of macrozoobenthos was found at Station 6 which is suspected because this station has a sandy sediment texture and sediment DOM content and high concentrations of water solubility of oxygen which support the life of makzoobenthos. Macrozoobenthos diversity at the study site (waters around the Center Point of Indonesia) is low with a diversity index (H') value of 0.00 - 0.16. The high abundance of makzoobenthos at Station 5 and Station 6 is characterized by high current velocity, sediment DOM and high oxygen concentration.

DIFFERENCES IN SPECIES, COVERAGE AND DENSITY OF SEAGRASS IN THE INTERTIDAL AND SUBTIDAL AREAS AT LABAKKANG BEACH, PANGKAJENE ISLAND REGENCY Indah Sandra Dewi; Lanuru, Mahatma; La Nafie, Yayu A; Amri, Khairul; Ukkas, Marzuki
Jurnal Ilmu Kelautan SPERMONDE VOLUME 10 NOMOR 1, 2024
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v10i1.19976

Labakkang Beach, Pangkajene Islands Regency has the characteristics of gently sloping coastal waters covered with various mangrove and seagrass communities. In general, seagrass is more commonly found in intertidal than subtidal areas, this is due to the depth reason. However, based on first observations, seagrass in Labakkang coastal waters thrives in subtidal areas and is less fertile in intertidal areas. The purpose of this study was to decide the differences in species, cover, and density of seagrass in intertidal and subtidal areas in the waters of Labakkang Beach, Pangkajene Islands Regency. This research was conducted in July 2021 with the method used, namely purposive sampling. Measurements of environmental parameters at the sampling location were carried out directly (in situ) including temperature, salinity, tides, depth, and current velocity, while turbidity, Total Organic Matter (TOM) analysis, and grain size of sediment were carried out tegakanirectly (ex-situ). The results of the average measurements of temperature, salinity, current velocity, depth, turbidity and TOM respectively show the range of 300C - 310C; 33.3‰ – 35.0‰; 0.07 m/s - 0.18 m/s (at high tide); 0.31 m - 1.32 m; 11.06 NTU - 29.04 NTU and 2.49 % - 5.39 %. The results of sediment analysis using Software Gradistat are 2 types of sediment, namely medium sand & fine sand and 2 types of sediment texture, namely Slightly Gravelly Sand and Slightly Gravelly Muddy Sand. The average percentage of seagrass cover at the intertidal station was 23.33 % while at the subtidal station it was 61.11% and only 2 species of seagrass were found, namely Enhalus acoroides and Halophila ovalis. The average density of seagrass at the intertidal station is 48.88 ind/m2 while at the subtidal station it is 86 ind/m2. The results of the Independent T-test analysis showed that there were significant differences in the cover and density of seagrass in the intertidal zone and subtidal zone in the coastal waters of Labakkang.

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