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INDONESIA
Jurnal Hidrosfir Indonesia
Published by Badan Pengkajian dan Penerapan Teknologi
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Articles 128 Documents
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PENGGUNAAN MIKROALGA CHLORELLA PYRENOIDOSA CHICK AMOBIL UNTUK MENINGKATKAN KUALITAS AIR DALAM AKUAKULTUR Riffiani, Rini
Jurnal Hidrosfir Indonesia Vol 5, No 2 (2010)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Immobilized microalgae Chlorella pyrenoidosa was applied initially to nutrient and heavy metal removal of wastewater. Immobilized microalgae using alginate was then developed for aquaculture application, such as controlling fish water culture quality to uptake concentration of ammonium, nitrate and to increase the oxygen level in water. During immobilization, algal cell maintain their respiratory and photosynthetic activities as that cell in the normal condition. The objective of this research was to examine the role of C. pyrenoidosa immobile on controlling the water quality by measuring ammonium, nitrate, and dissolved oxygen content. Five aquariums consisted of 40 litres of water were filled with 20 Nile Tilapia (Oreothromis niloticus) with the average weight between 1.6 and 1.7 g. The immobile algae cell were packaged in two nillon porus bag (pore size was 2x3 mm in diameter) and each immobile cell had 4 millimeter in diameter. Each aquarium was added with 3000, 4000, 5000, and 6000 of immobile cell. The treatment had 2 replicates. The results showed that the aquarium filled with 4000 beads of immobile cell gave the best result. The ammonium content on the water decrease 6,626 ppm/day, nitrate content on the water decreased 13.99 ppm/ day, soluble oxygen raised 0.766 per day and fish biomass raised 1.56 g/fish for 15 days.
PENGARUH HABITAT KOMPLEKS TERHADAP KOMPOSISI KOMUNITAS MAKROINVETEBRATA DALAM SEBUAH KOLAM AIR TAWAR YANG BERSTATUS DYSTROPHIC Tjokrokusumo, Sabaruddin Wagiman
Jurnal Hidrosfir Indonesia Vol 1, No 3 (2006)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

A study of the role of habitat complexity and predation on the composition ofthe macroinvertebrate community in a small dystrophic wetland wasundertaken using artificial substrates. Rectangular samplers of increasingcomplexity were constructed from nylon mesh and wooden dowelling.Samplers of three levels of complexity were developed in both caged anduncaged forms to evaluate the effects of substrate complexity and predationon macroinvertebrate richness and abundance. A total of 24 samplers (6treatments x 4 relicates were deployed in swamp for 8 weeks in September/November 1995. The results indicated that increased habitat complexity doeslead to species richness, but cages have an effect in addition to layers aspreferred habitat for both prey and predator. Increasing richness is not followedby an increase in abundance in more complex habitats. However, an increasein habitat complexity tended to result in a decrease in abundance, probablydue to predation with the lowest abundance found at intermediate compexity.
IDENTIFIKASI AKUIFER AIR TANAH DI KEC. TAMANSARI, KOTA TASIKMALAYA DENGAN METODE GEOLISTRIK Wibowo, Mardi
Jurnal Hidrosfir Indonesia Vol 4, No 2 (2009)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Along with increase in population and economic growth inTasikmalaya Residence cause the need of water is increased too.The majority these need take from groundwater resources.Occurrence groundwater resources depends on many factor likelandform (landscapes), geology, precipitation, land use, etc.Resistivity geoelectric survey (method) can detect groundwaterresources occurrence. The goals of this survey is to predict geometryand distribution of groundwater reservoir (aquifer). This survey useresisitivity method with Schumblerger Configuration. Generally,underground condition of Tamansari area consist of 4 layers oflithology i.e. pebbly sandstone, sandstone, clayey sandstone andsandy claystone. Sandstones have good potential as aquifer.Sandstone layer is evenly distributed in Tamansari area at depthbetween 1 m 10 m. For shallow groundwater resources exploitationshould be directed at south east and south west part of Tamansariarea; while for deep groundwater resources exploitation can directedanywhere at depth more than 100 m.
PENGARUH PERBEDAAN DOSIS OKSIGEN TERLARUT (DO) PADA DEGRADASI AMONIUM KOLAM KAJIAN BUDIDAYA UDANG Komarawidjaja, Wage
Jurnal Hidrosfir Indonesia Vol 1, No 1 (2006)
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Abstract

The objective of the study is to determine the effectiveness of bacterial application and various continuous dissolved oxygen (DO) treatment for nitrogen (ammonia, nitrite and nitrate) degradation in shrimp culture. The DO treatment was set as 4.5 mg/L for treatment-I, 5.5 mg/L for treatment-II and 6.5 mg/L for treatment-III. The batch oxidation was conducted for a period of 20 days. The temperature, pH, salinitas, DO, ammonia, nitrite and nitrate were determined.Based on some previous research papers. NH3 becomes toxic to shrimp if the concentration is higher than 0.54mg/Lr. NH3 measurement on this experiment was about 0.01 mg/L up to 2.5 mg/L, but frequently was found lower than 0.54 mg/L in the pond under treatment-III (6.5 mg/L DO).The result also indicates that nitrification process in the experiment pond was not only depend on DO level and abundance of nitrifier, but also was influenced by a possibility of the occurrence of organic compound that inhibit nitrification.
KONDISI PENCEMARAN PERAIRAN TELUK JAKARTA Yudo, Satmoko
Jurnal Hidrosfir Indonesia Vol 2, No 3 (2007)
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Abstract

Jakarta bay is a semi-closed waters located in north of Jakarta city. This waters has been getting pollutant such as domestic, organic and industrial waste, heavy metal or spill oil which trend to rise and it?s afraid to exceed its supportive capacity. To empty some rivers across Jakarta area into Jakarta bay, waters carry many pollutant. Every rives across Jakarta emty into Jakarta bay waters and it?s water quality is very effected by the condition of river water quality flowing to Jakarta bay. To know how bad the pollutan in Jakarta bay waters we have to check the condition of it?s water quality periodically. It is hope that the conclusion could be the ground to make preventions.Keywords: Jakarta Bay, water pollutant, waters quality database program development.
STUDI PEMILIHAN LOKASI ALTERNATIF PELABUHAN TRISAKTI BANJARMASIN PROPINSI KALIMANTAN SELATAN Syaefudin, Syaefudin
Jurnal Hidrosfir Indonesia Vol 3, No 3 (2008)
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Abstract

The operational of Trisakti port , Banjarmasin, South Kalimantan is only 3 hoursperday due to sedimentation and sea lane damaged. This condition became worse inline with forest conversion in hinterland area. Selection of alternative port was carried out at seven coastal areas in Tanah Laut regency. Based on the result of multicriteria analysis, the best location for alternative port is Batakan-Tanjung Coast.
KONDISI TERUMBU KARANG DI PULAU KARANG CONGKAK KEPULAUAN SERIBU Santoso, Arif Dwi
Jurnal Hidrosfir Indonesia Vol 5, No 2 (2010)
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Abstract

Seribu Island corral reef and reef fish are endangered by natural impact, various pressures from inland activities and destructive fishing practices. Cumulatively, these pressures appear to have significantly degraded corral reefs and its ecosystem over time. Meanwhile the corral reef ecosystem condition determines surroundings biodiversity condition that impact to local community. Therefore,it is necessary to serve and monitor corral reef ecosystem regularly. This article showed that corral reef covering at Karang Congkak Island was more lower abaout 27.41%. Degraded corral reefs occurred by several factors: increasing water temperature due to climate change, bathymetry and tide and destructive activity likely un-friendly fishing, corral mining and tourism activity.
PENGARUH IRIGASI DAN NAUNGAN TERHADAP PRODUKSI TANAMAN CABE (CAPSICUM ANNUM) PADA LAHAN BERPASIR DI PANTAI GLAGAH, YOGYAKARTA Mawardi, Ikhwanuddin; Sudaryono, Sudaryono
Jurnal Hidrosfir Indonesia Vol 3, No 1 (2008)
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Abstract

Coastal area is one of the marginal areas that is not suitable for agriculture field. However, bad quality of the area can be improved physically and chemically by adding some organic matters into the soil. Another factor that also plays an important role in improving the quality of sandy soil is weather, which consists of sun radiation, temperature, humidity, soil temperature, wind flow and rain fall. In order to obtain a good quality micro weather in a chili vegetation field, a cover may be placed above the vegetation to create a warm and wet micro weather which will free the vegetation from stress. Another important thing to attain success in productive agriculture is a certainty to get water or irrigation that can be engineered. Through those environmental engineering, an improvement on chili harvesting product has been achieved at Glagah Coast, West Progo, Yogyakarta.
KUALITAS AIR DI LAHAN BEKAS PENAMBANGAN NIKEL DI PULAU GEBE, MALUKU UTARA Wibowo, Mardi
Jurnal Hidrosfir Indonesia Vol 4, No 3 (2009)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Since year 1977 until 2005, PT. ANTAM has been exploited nickel ore resources at Gebe Island Center of Halmahera District North Maluku Province. Mining activity, beside give economically advantages also cause degradation of environment quality espicially water quality. Therefore, it need evaluation activity for change and compare of water quality at GebeIsland after mining activity. In this research we took a field survey and got 4 samples (1 samples for undisturbed water : Niwisyo Lake; 3 samples for disturbed water : Check Dam, Port and Turap Ponds). And then these samples were analyzed at BIOTROP laboratory. Base on this research, the water quality in Niwisyo Lake [only BOD parameter exceed standard] andCheck Dam were classified in Class I [only Ni concentration (0,213 mg/lt) and suspended solid (12,93mg/lt) have high value] , water in port was Class III [only DHL parameter (567 S) has high value] and water ini Turap Ponds was Class IV [only BOD (18,43 mg/l) and DHL (497 S) parameter have high value]. This condition may be caused the rehabilitation activity in GebeIsland has been succeded.
KAJIAN KUALITAS AIR WADUK TIRTA SHINTA DI KOTABUMI LAMPUNG Riyadi, Agung
Jurnal Hidrosfir Indonesia Vol 1, No 2 (2006)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Tirta Shinta reservoir located at Wonomarto, North Kotabumi Lampung. Fiveteen year ago, this reservoir only use for wet rice field irrigation and the depth until 19 meter, but now the depth average just only 6 meter, many activities in the upper land and a lot of sedimentation. This reservoir condition be apprehensive, beside for used by irrigation, cultivation fish (karamba jaring apung) and tourisme, 40% surface water reservoir covered by grass wild and than degradation for fish production. Water quality for the Tirta Shinta reservoir still under standard quality (baku mutu) for fish. Dissolved oxygen (DO) surface water around 5 ppm, but at the bottom decrease until 2 ppm. Bakteri Coli containt is very hight until 1600 MPN/100ml, may be caused by a lot of fish cultivation activities, waste water domestic around the reservoir and no flushing water in the reservoir. Zeng (Zn) more until 0.112 mg/liter exceed quality standard (baku mutu) that is 0.05 mg/l. Ph relative acid around 5.5 6 and Pb under 0.001 mg/l.

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