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WATER QUALITY DISTRIBUTION AT PARI ISLAND CLUSTER, SERIBU ISLAND Rustam, Agustin; Salim, Hadiwijaya L.
Jurnal FKIP : REGION Vol 5, No 1 (2013): REGION
Publisher : Jurnal FKIP : REGION

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Abstract

ABSTRACT Research on water quality of Pari Islands was carried out on June 2007. The aim of the research is to know water quality in Pari Island. Some water parameter were measured such as transparancy, temperature, salinity, pH, ammonia, phosphate, Dissolved Oxygen, Pb, Zn and Cd. Water samples were taken by using Nansen bottle for in situ measurements  and in laboratory.  Resulted show that the average value of the parameters measured are 6,28 m, 30,92°C, 33,78 ppt, 8,35, 2,95 mg/l ammonia, 0,28 mg/l, 3,78 mg/l respectively for transparancy, temperature, salinity, pH, ammonia, phosphate and dissolved oxygen, while heavy metal content was 0,08 mg/l, 0,051 mg/l and 0,003 mg/l for Pb, Zn and Cd respectively. By PCA analyzed, it shows that the waters of Pari Islands serving generally as a buffer zone from Seribu Islands National Park, tends to be decrease in quality. Therefore, it suggest that it needs to conserve the ecosystem from any kind of pollution, mainly domestic pollution and boat pollution from seaweed culture by involving the local people. Key words : Water quality, Pari Island, PCA
Study of Susceptibility of Pari Island Groundwater – To Surface Water Using Natural Isotopes and Hydrochemicals Pujiindiyati, E. Ristin; Sidauruk, Paston; Rustam, Agustin
Jurnal Aplikasi Isotop Radiasi Vol 10, No 2 (2014): Desember 2014
Publisher : BATAN

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Abstract

The Pari Island with a total area of 40,32 ha is situated at the southern end of a chain of more than a hundred islands, commonly known as Seribu Islands, in Java Sea.  Its topography is flat land and mainly consists of coral reefs such that fresh water supply for local people is very limited. The scarcity of fresh water to the local people  is still worsen by the intrusion of sea water to the aquifer system. The objective of this study is to get a better understanding of mixing process between sea water and ground water and to trace the sources of salinity in shallow groundwater of Pari Island. The combinations of natural isotopes of 18O and 2H in water and hydrochemical (such as Na+, K+, Ca2+, Mg2+, Cl-, SO42- and HCO3-) content were used in this study. Results of hydrochemicals showed that almost all of the shallow groundwaters of Pari island had undergone mixing process with sea water. Mostly, they were classified as brackish water and gradually changed to saline water along the flowpath of the water. Only two groundwater samples were still characterized as fresh water type. Mixing ratios of seawater-groundwater water were estimated to be between 2% and 38%. Isotopic results of 18O and 2H revealed that slope of groundwater samples had decreased compared to local water meteoric line. Obviously, those distributions a long the mixing line of sea water – rain water, indicated that high salinity of groundwaters in Pari Island  originated from encroachment of sea water. It implied that the salinity was caused by flushing of minerals into soil by direct precipitation could not be taken into consideration. Key words: Pari Island, groundwater, sea water intrusion, natural isotopes, hydrochemicals  ABSTRAK Studi Kerentanan Air Tanah Pulau Pari - untuk Permukaan Air Menggunakan Isotop Alam dan Hidrokimia. Pulau Pari merupakan salah satu dari rangkaian pulau yang terletak di sebelah selatan Kepulauan Seribu. Luas wilayahnya sekitar 40,32 ha yang dikelilingi oleh laut Jawa dengan topografi adalah tanah datar yang umumnya tersusun atas batuan koral. Karena kondisi inilah maka persediaan air tawar menjadi masalah utama di Pulau Pari yang kualitasnya semakin menurun. Tujuan dari penelitian ini adalah memahami proses percampuran air laut terhadap air tawar dan merunut sumber air asin di air tanah dangkal di Pulau Pari. Dalam penelitian ini digunakan parameter isotop alam (18O dan 2H) dan hidrokimia (Na+, K+, Ca2+, Mg2+, Cl-, HCO3- dan SO42-). Hasil dari kandungan hidrokimia menunjukkan bahwa umumnya air tanah dangkal di Pulau Pari telah mengalami percampuran dengan air laut. Klasifikasi air tanahnya adalah berupa air payau, akan tetapi seiring dengan pergerakkan air tanah maka air payau tersebut berubah menjadi air asin. Hanya ada 2 lokasi yang masih terindikasi sebagai air tawar. Perbandingan air laut dan air hujan pada air tanah dangkal di Pulau Pari diperkirakan antara 2% hingga 38%. Distribusi kandungan isotop alam 18O dan 2H pada air tanah telah bergeser dari garis air meteorik lokal dan terletak pada garis percampuran air laut-air hujan. Hal ini menunjukkan bahwa salinitas pada air tanah dangkal di Pulau Pari berasal dari gangguan air laut dan bukan berasal dari proses pencucian garam di formasi tanah oleh air hujan. Kata Kunci: Pulau Pari, air tanah, intrusi air laut, isotop alam, hidrokimia
Ekosistem Lamun sebagai Bioindikator Lingkungan di P. Lembeh, Bitung, Sulawesi Utara Rustam, Agustin; Kepel, Terry L.; Kusumaningtyas, Mariska A.; Ati, Restu Nur Afi; Daulat, August; Suryono, Devi D.; Sudirman, Nasir; Rahayu, Yusmiana P.; Mangindaan, Peter; Heriati, Aida; Hutahaean, Andreas A.
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

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Abstract

ABSTRACTSeagrass ecosystem has a function of spawning, nursery, and feeding ground. Besides, it could be used as a bio-indicator of environmental health. This study of seagrass ecosystem was done in 17- 22 May 2014 in Lembeh Island and Tanjung Merah, Bitung. The purpose of the study is to obtain existing condition of seagrass ecosystem and its role as environment bio-indicator. Purposive sampling method was used representing all study sites. Structure analysis of seagrass communities describes the existing condition, while scoring / weighting method estimate current condition of the seagrass. Results that show there are seven species of seagrass. In the stations opposite to Bitung mainland, 75% of the seagrass are Enhalus acoroides (10-50% covers). Importance value index of the seagrass species were Enhalus acoroides (231–300 %), Thalassia hemprichii ( 102–198 %) and Halophila ovalis (110 %) respectively. Based on the weighting method and environmental standard quality, seagrass ecosystem in Lembeh island opposite to Bitung mainland was in damage and unhealthy condition, while seagrass ecosystem opposite to the open sea was in a good and healthy condition. This was due to the domestic waste that is trapped in seagrass ecosystem in the study site. It is necessary to improve awareness to maintain quality of environmental.  Keywords: seagrass, existing, bioindicator, Lembeh Island 
Study of Susceptibility of Pari Island Groundwater – To Surface Water Using Natural Isotopes and Hydrochemicals Pujiindiyati, E. Ristin; Sidauruk, Paston; Satrio, Satrio; Rustam, Agustin
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 10, No 2 (2014): Desember 2014
Publisher : BATAN

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Abstract

The Pari Island with a total area of 40,32 ha is situated at the southern end of a chain of more than a hundred islands, commonly known as Seribu Islands, in Java Sea.  Its topography is flat land and mainly consists of coral reefs such that fresh water supply for local people is very limited. The scarcity of fresh water to the local people  is still worsen by the intrusion of sea water to the aquifer system. The objective of this study is to get a better understanding of mixing process between sea water and ground water and to trace the sources of salinity in shallow groundwater of Pari Island. The combinations of natural isotopes of 18O and 2H in water and hydrochemical (such as Na+, K+, Ca2+, Mg2+, Cl-, SO42- and HCO3-) content were used in this study. Results of hydrochemicals showed that almost all of the shallow groundwaters of Pari island had undergone mixing process with sea water. Mostly, they were classified as brackish water and gradually changed to saline water along the flowpath of the water. Only two groundwater samples were still characterized as fresh water type. Mixing ratios of seawater-groundwater water were estimated to be between 2% and 38%. Isotopic results of 18O and 2H revealed that slope of groundwater samples had decreased compared to local water meteoric line. Obviously, those distributions a long the mixing line of sea water – rain water, indicated that high salinity of groundwaters in Pari Island  originated from encroachment of sea water. It implied that the salinity was caused by flushing of minerals into soil by direct precipitation could not be taken into consideration. Key words: Pari Island, groundwater, sea water intrusion, natural isotopes, hydrochemicals
Kajian Kualitas Air Untuk Wisata Bahari Di Pesisir Kecamatan Moyo Hilir Dan Kecamatan Lape, Kabupaten Sumbawa Saraswati, Ni Luh Gede Rai Ayu; -, Yulius; Rustam, Agustin; Salim, Hadiwijaya L.; Heriati, Aida; Mustikasari, Eva
Jurnal Segara Vol 13, No 1 (2017): April
Publisher : Pusat Riset Kelautan

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Abstract

Perairan teluk Saleh memiliki keanekaragaman hayati laut yang berpotensi sebagai obyek wisata bahari. Keberadaan keanekaragaman hayati laut tersebut tidak terlepas dari kondisi kualitas perairan sebagai penunjang kehidupan organisme akuatik sebagai obyek dari wisata bahari. Oleh karena itu, penelitian terhadap analisis kualitas air untuk wisata bahari di teluk Saleh diperlukan. Penelitian ini dilakukan pada 8-10 Mei 2015 di teluk Saleh, Kabupaten Sumbawa dengan mengambil sebanyak 29 lokasi stasiun pengamatan. Pengambilan data kualitas perairan dilakukan secara purposive sampling dengan menggunakan alat multiparameter WQC-24. Parameter yang diukur diantaranya adalah kecepatan arus, kecerahan, kekeruhan, suhu, pH, salinitas dan DO. Analisis data dilakukan secara deskriptif dan menggunakan analisa PCA (Principal Component Analysis). Hasil pengukuran menunjukan bahwa nilai kekeruhan (pada stasiun 25 dan 50), fosfat dan nitrat melebihi baku mutu Kepmenneg LH no 51 tahun 2004 Lampiran II dengan nilai rata-rata berturut-turut 20,5 NTU; 0,074 mg/L; dan 8,4 mg/L. Secara keseluruhan perairan teluk Saleh tergolong baik dan cocok sebagai kawasan wisata bahari. Berdasarkan analisis PCA diperoleh parameter yang berperan kuat di lokasi adalah konduktivitas, salinitas, suhu, kecepatan arus dan kekeruhan.
STUDI AWAL RAJA AMPAT SEBAGAI MARINE ECO ARCHEO PARK: ANALISIS KUALITAS PERAIRAN DI KAWASAN SELAT DAMPIR Rustam, Agustin; Dillenia, Ira; A Troa, Rainer; G Bengen, Dietriech
Jurnal Segara Vol 14, No 1 (2018): April
Publisher : Pusat Riset Kelautan

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Abstract

Selat Dampir yang berada di daerah Raja Ampat merupakan salah satu gugusan pulau-pulau kecil yang berada di ujung kepala burung pulau Papua bagian dari kawasan Coral Triangle Initiative (CTI) yang memiliki biodiversitas tinggi. Selain itu di lokasi ini terdapat situs arkeologi maritim, sehingga kawasan ini merupakan kawasan yang cocok sebagai kawasan marine eco archeo park. Perlu dilakukan penelitian awal keberadaan lokasi ini seperti kualitas perairan yang dilakukan pada tanggal 7 – 13  Mei 2014. Pengambilan data kualitas perairan dilakukan secara purposive sampling dengan menggunakan alat multiparameter secara in situ dan analisis sampel air di laboratorium. Parameter yang diukur yaitu salinitas, pH, turbiditas, padatan tersuspensi (TSS), Biological Oxygen Demand (BOD5), nitrat, tembaga dan nikel. Analisis data dilakukan secara deskriptif dan menggunakan analisis PCA (Principal Component Analysis). Hasil yang didapat untuk semua parameter masih sesuai dengan KMNLH no 51 tahun 2004, hanya nilai tembaga pada saat pengukuran tidak sesuai, walaupun secara keseluruhan perairan Selat  Dampir pada saat pengukuran masih dalam kondisi baik sebagai daerah taman nasional dan wisata bahari. Berdasarkan analisis PCA didapatkan parameter yang berperan kuat di lokasi adalah BOD5, pH, TSS dan kecerahan. Diperlukan penelitian lebih lanjut terkait lokasi penelitian sebagi situs maritim dan daerah wisata bahari di daerah konservasi dalam mewujudkan marine eco archeo park berbasis ekosistem lestari.
Ekologi dan Struktur Komunitas Lamun di Teluk Ratatotok, Minahasa Tenggara, Sulawesi Utara Kusumaningtyas, Mariska A.; Rustam, Agustin; Kepel, Terry L.; Afi Ati, Restu Nur; Daulat, August; Mangindaan, Peter; Hutahaean, Andreas A.
Jurnal Segara Vol 12, No 1 (2016): April
Publisher : Pusat Riset Kelautan

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Abstract

Penelitian mengenai ekologi dan struktur komunitas lamun ini dilakukan tanggal 10 – 15 Juni 2013 di perairan pesisir Teluk Ratatotok, Minahasa Tenggara. Metode penelitian dilakukan secara purposive sampling terkait dengan keberadaan lamun. Penelitian yang dilakukan meliputi pengukuran prosentase tutupan lamun, kerapatan, struktur komunitas, dan kondisi lingkungan di lokasi penelitian. Terdapat tujuh jenis lamun yang terdiri dari dua famili. Famili Hydrocharitaceae ditemukan tiga jenis lamun yaitu Enhalus acoroides (Ea), Thalassia hemprichii (Th) dan Halophila ovalis (Ho). Empat jenis lamun dari famili Cymodoceaceae yaitu Cymodocea serrulata (Cs), Cymodocea rotundata (Cr), Halodule pinifolia (Hp), dan Syringodium isoetifolium (Si). Kisaran prosentase penutupan rata-rata antara 22,5% - 89,5%. Kerapatan lamun perstasiun berkisar antara 17 – 473 ind/m2, dengan kerapatan tertinggi lamun jenis Ho sebesar 473 ind/m2 di stasiun 6. Nilai INP tertinggi pada lamun jenis Ea sebesar 128% diikuti berturut-turut oleh Si (41%), Th (36%), Ho (27%), Cs (26%), Cr (24%) dan Hp (17%). Berdasarkan kriteria status kondisi padang lamun (Kepmen LH no 200 tahun 2004), kondisi padang lamun di Teluk Ratatotok antara rusak/miskin sampai dengan baik/sehat. Stasiun 5 kondisi rusak/miskin, stasiun 3 dan 4 kondisi rusak/kurang sehat dan tiga stasiun kondisi baik/sehat yaitu stasiun 1, 2 dan 6. Secara keseluruhan kondisi lingkungaan Teluk Ratatotok masih mendukung pertumbuhan lamun.
KARAKTERISTIK SEBARAN SEDIMEN DAN LAJU SEDIMENTASI PERAIRAN TELUK BANTEN Rustam, Agustin; Adi, Novi Susetyo; Mustikasari, Eva; Kepel, Terry Louise; Kusumaningtyas, Mariska A.
Jurnal Segara Vol 14, No 3 (2018): Desember
Publisher : Pusat Riset Kelautan

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Abstract

Teluk Banten di Utara Kota Serang, Banten, menampung berbagai muatan sedimen dari 7 (tujuh) sungai yang bermuara di teluk ini. Penelitian yang dilakukan pada Oktober 2008 di perairan teluk ini bertujuan untuk memahami karakteristik sebaran sedimen permukaan dan komposisi bahan organik serta laju sedimentasi sebagai bagian dari penelitian karbon laut di Indonesia. Metode yang dilakukan adalah metode deskriptif, dengan memeriksa sedimen yang diambil menggunakan grab sampler. Analisis sedimen meliputi pengukuran tekstur sedimen, bahan organik total atau Total Organic Matter (TOM) dan laju sedimentasi; analisis perairan meliputi bahan organik terlarut dan total padatan tersuspensi atau Total Suspended Solids (TSS). Dalam klasifikasi pasir, debu dan liat, sampel yang dikumpulkan dari Teluk Banten menunjukkan tekstur sedimen pasir rata-rata sebesar 54,86 %, sedangkan nilai TOM dan karbon organik berkisar 5,33 - 20,57 % dan 0,47 - 3,44 %. Laju sedimentasi tercatat berkisar antara 0,011 - 0,035 kg/m2/hari dengan komposisi tertinggi pada tekstur pasir.
Seagrass Ecosystem Carbon Stock In The Small Islands: Case Study In Spermonde Island, South Sulawesi, Indonesia Rustam, Agustin; Sudirman, Nasir; Afi Ati, Restu Nur; Salim, Hadiwijaya Lesmana; Rahayu, Yusmiana Puspitaningsih
Jurnal Segara Vol 13, No 2 (2017): Agustus
Publisher : Pusat Riset Kelautan

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Abstract

Small islands are particularly rich with coral reefs and seagrass ecosystems and coastal plants. Seagrass is one of the coastal ecosystems of blue carbon, which is capable of storing utilize and store CO2 in the form of organic carbon in biomass and sediment. The purpose of this study to get the carbon stock of seagrass and its role in climate change. The survey method with sampling purposive sampling representing all research sites and analyzed the amount of carbon contained in biomass and sediment. The result showed that there were eight species of seagrass found, and the highest carbon stock  on the type Enhalus acoroides at  Kapoposang island was 1.64 MgC / ha. The average value of the total biomass of carbon stock in the islands largest seagrass Bauluang island  was 1.89 ± 0.92 Mg C / ha with the largest at the ground below 77% of total carbon biomass. Carbon stock in sediments of seagrass ecosystems average of 531.87 ± 74.08 Mg C / ha up to a depth of 50 cm. The role of seagrass in Spermonde archipelago waters in climate change in both the biomass and sediment for MgC 533.25 MgC/ ha is equivalent to the use of CO2 for 1955.26 MgCO2e / ha.
GROWTH RATE AND PRODUCTIVITY DYNAMICS OF ENHALUS ACOROIDES LEAVES AT THE SEAGRASS ECOSYSTEM IN PARI ISLANDS BASED ON IN SITU AND ALOS SATELLITE DATA Rustam, Agustin; Bengen, Dietriech Geoffrey; Arifin, Zainal; Gaol, Jonson Lumban; Arhatin, Risti Endriani
International Journal of Remote Sensing and Earth Sciences (IJReSES) Vol 10, No 1 (2013)
Publisher : National Institute of Aeronautics and Space of Indonesia (LAPAN)

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Abstract

Enhalus acoroides is the largest population of seagrasses in Indonesia. However, growth rate  and  productivity  analyses  of Enhalus  acoroides and  the use  of  satellite data to estimate its the productivity are still rare. The goal of the research was to analyze the growth rate, productivity rate,seasonal productivity of Enhalus acoroides in Pari island and its surroundings. The study was divided into two phases i.e., in situ measurments and satellite image processing. The field study was conducted to obtain the coverage percentage, density, growth rate, and productivity rate, while the satellite image processing was used to estimate the extent of seagrass. The study was conducted in August 2011 toJuly  2012  to  accommodate  all  four  seasons. Results  showed  that  the highest  growth  rate  andproductivity occurred during the transitional season from west Monsoon to the east Monsoon of 5.6cm/day  and  15.75  mgC/day, respectively.   While, the  lowest growth rate  and productivity occurred during  the  transition  from east  Monsoon  to  the  west  Monsoon of 3.93  cm/day  and  11.4  mgC/day, respectively. Enhalus  acoroides productivity reached its maximum during  the  west  Monsoon  at 1081.71 mgC/day/m2 and minimum during east Monsoon with 774.85 mgC/day/m2 . Based on ALOS data in 2008 and 2009, total production of Enhalus acoroides in the proximity of Pari islands reached its maximum occur during the west Monsoon (48.73 – 49.59 Ton C) and minimum during transitional season (16.4-16.69 Ton C). Potential atmospheric CO2 absorption by Enhalus acoroides in Pari island was estimated at the number 60.14 – 181.82 Ton C.