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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Marine Research in Indonesia
Muswerry Muchtar
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Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Library & Information Science

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COMPARISON OF TWO SAMPLING METHODS (CORER AND IN SITU SEDIMENT SIPPER METHODS) FOR THE PORE WATER OF SEDIMENT Muchtar, Muswerry
Marine Research in Indonesia Vol 29 (1995)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1768.897 KB) | DOI: 10.14203/mri.v29i0.416

Abstract

Effect of two sampling techniques (i.e. corer and sipper samplers) of sediment pore water on measured concentrations of phosphate, nitrate and ammonia was examined. The concentrations of nitrate and ammonia in relation to sediment depth (vertical variations) collected by corer and sipper sampler do not show significant differences, while for phosphate concentrations significant differences occurred. The advantages   and disadvantages of both techniques are discussed.
CHEMICAL PROPERTIES IN THE CONSERVATION AREAS OF GILIMANUK BAY, WEST COAST OF BALI Muchtar, Muswerry
Marine Research in Indonesia Vol 33, No 1 (2008)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6932.468 KB) | DOI: 10.14203/mri.v33i1.504

Abstract

The study on chemical properties in the conservation areas of Gilimanuk Bay, west coast of Bali was carried out in March 2006. The dissolved oxygen and degree of acidity (pH) in surface water were analyzed. The nutrients, consisting of phosphate, nitrate and ammonia concentrations in water were analyzed as well. In general all the chemical parameters were normal for coastal waters. Dissolved oxygen in this area was lower than those in Jakarta Bay and Panimbang waters, while the nutrient concentrations were lower compared to those of Cisadane Estuary, but higher compared to those of Mamberamo Waters. The fluctuations of pH, dissolved oxygen and other nutrients were influenced by the condition of surrounding area.
NUTRIENT CONCENTRATION AND PH IN THE CISADANE ESTUARINE AND COASTAL WATERS Muchtar, Muswerry
Marine Research in Indonesia Vol 32, No 2 (2007)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/mri.v32i2.439

Abstract

The study on the fluctuation of dissolved nutrient concentrations and acidity (pH) in the Cisadane Estuary was carried out in May 2004 October 2004 and July 2005. Inorganic phosphate, nitrate and silicate of the surface water were analyzed, using Spectrophotometer and pH was measured with a pH meter. Generally the nutrient concentrations in the estuary were higher compared to those in the coastal and offshore areas. The concentrations were gradually becoming lower and lower toward the open sea. Their fluctuation depended not only on the environmental condition but also on the water volurrie from the land and the mangrove forest in that area.
COMPARISON OF TWO SAMPLING METHODS (CORER AND IN SITU SEDIMENT SIPPER METHODS) FOR THE PORE WATER OF SEDIMENT Muchtar, Muswerry
Marine Research in Indonesia Vol 29 (1995)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1768.897 KB) | DOI: 10.14203/mri.v29i0.416

Abstract

Effect of two sampling techniques (i.e. corer and sipper samplers) of sediment pore water on measured concentrations of phosphate, nitrate and ammonia was examined. The concentrations of nitrate and ammonia in relation to sediment depth (vertical variations) collected by corer and sipper sampler do not show significant differences, while for phosphate concentrations significant differences occurred. The advantages   and disadvantages of both techniques are discussed.
NUTRIENT CONCENTRATION AND PH IN THE CISADANE ESTUARINE AND COASTAL WATERS Muchtar, Muswerry
Marine Research in Indonesia Vol 32 No 2 (2007)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/mri.v32i2.439

Abstract

The study on the fluctuation of dissolved nutrient concentrations and acidity (pH) in the Cisadane Estuary was carried out in May 2004 October 2004 and July 2005. Inorganic phosphate, nitrate and silicate of the surface water were analyzed, using Spectrophotometer and pH was measured with a pH meter. Generally the nutrient concentrations in the estuary were higher compared to those in the coastal and offshore areas. The concentrations were gradually becoming lower and lower toward the open sea. Their fluctuation depended not only on the environmental condition but also on the water volurrie from the land and the mangrove forest in that area.
CHEMICAL PROPERTIES IN THE CONSERVATION AREAS OF GILIMANUK BAY, WEST COAST OF BALI Muchtar, Muswerry
Marine Research in Indonesia Vol 33 No 1 (2008)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6932.468 KB) | DOI: 10.14203/mri.v33i1.504

Abstract

The study on chemical properties in the conservation areas of Gilimanuk Bay, west coast of Bali was carried out in March 2006. The dissolved oxygen and degree of acidity (pH) in surface water were analyzed. The nutrients, consisting of phosphate, nitrate and ammonia concentrations in water were analyzed as well. In general all the chemical parameters were normal for coastal waters. Dissolved oxygen in this area was lower than those in Jakarta Bay and Panimbang waters, while the nutrient concentrations were lower compared to those of Cisadane Estuary, but higher compared to those of Mamberamo Waters. The fluctuations of pH, dissolved oxygen and other nutrients were influenced by the condition of surrounding area.
NUTRIENT PHOSPHATE, NITRATE AND SILICATE DISTRIBUTION OF NATUNA ARCHIPELAGO WATERS Muswerry Muchtar
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (981.845 KB) | DOI: 10.29244/jitkt.v4i2.7792

Abstract

Research on phosphate, nitrate and silicate distributions of Natuna ArchipelagoWaters was conducted using RV Baruna Jaya VIII in April  2011.  Concentration of phosphate, nitrate and silicate were analyses by Spectrophotometry. The purpose of the study was to assess  the distribution of nutrients as fertility indicator of marine life. The results showed that the phosphate concentration at surface layer of Subi, Bunguran,  and Laut islands ranged from 0,04 to 0,22 µg A/l, 0,04 to 0,18 µg A/l and from 0,04 to 0,13 µg A/l, with average  0,11 µgA/l, 0,08 µgA/l and  0,07 µg A/l,  respectivelly. Concentration of nitrate ranged from 0,31 to 4,90 µg A/l, 0,23 to 2,29 µg A/l and from 0,14 to 0,32   µg A/l with average of 90 µgA/l, 0,78 µg A/l and  0,22 µg A/l, respectivelly. Silicate concentration  ranged from 2,97 to 5,35  µg A/l, 2,28 to 4,85  µg A/l and from 2,28 to 3,57 µg A/l with average  4,49 µgA/l, 3,62 µg A/l and 3,02 µg A/l,respectivelly. While phosphate concentration at bottom layer of Subi, Bunguran  and Laut  islands ranged from 0,04-0,27 µg A/l,  0,04-0,31 µg A/l and 0,09-0,22µg A/l,, with average  0,13 µgA/l, 0,13 µgA/l dan 0,12, µg A/l  respectivelly. Concentration of nitrate  ranged  from 2,59-5,61µg A/l, 0,73-4,75 µg A/l and 2,06-3,03 µg A/l with average  2,85 µgA/l, 3,14 µg A/l and 2,49 µg A/ respectivelly. Silicate concentration in Subi, Bunguran and Laut Islands ranged from  4,46-6,21 µg A/l, 3,20-5,84  µg A/l dan 3,07-4,66 µg A/l with average 5,323,73 µgA/l, 4,74 µg A/l dan 3,73 µg A/l. In general concentration of those nutrient of Natuna Archipelago waters  was still within the Standard Quality set by the Ministery of Environment (KMNLH). Keywords: nutrient, phosphate, nitrate, silicate, Natuna Archipelago waters.
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