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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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ANALISIS DAYA DUKUNG LINGKUNGAN PERAIRAN MARIKULTUR BATAM ESTET (BME) BATAM Sachoemar, Suhendar I
Jurnal Hidrosfir Indonesia Vol 1, No 2 (2006)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Carrying capacity analysis at Bantam Mariculture Estate was conducted todetermain their optimal production capacity and number of fish cages settingfor sustainable aquaculture development within this area. The analysis wasdesign on the material balance base of the nitrogen input and output wherethe aquaculture system of fish rearing on the cages was assumed as theblack box system. To support the analysis, physical and chemical parameters such as current speed and dissolved in organic nitrogen (ammonia, nitrate and nitrite) were included on the analysis to understand their flushing rate as key factor that showing of the ecosystem ability on the reduction of the pollutant concentration.The calculation result shows that fish production capacity of BatamMariculture Estate was high that is up to 3 thousand ton peryear for 3thousand unit of fish cages. Flushing rate was excellent that is within rangeof 30 – 60 million m3/hours with the ability of the ecosystem to avoid thepollutant is less than 10 hours. The nitrogen and ammonia released on theenvironment are low that are around 0.004 – 0.008 mg/days and 0.002 –0.004 mg/days respectively. These value are below of the minimum levelpermitted for the aquaculture.
PENGEMBANGAN KEGIATAN EKONOMI SEBAGAI UPAYA ADAPTASI PERUBAHAN LINGKUNGAN FISIK PERAIRAN LAGUNA SEGARA ANAKAN Edyanto, CB Herman
Jurnal Hidrosfir Indonesia Vol 4, No 2 (2009)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Sedimentation is a natural process which is materialized in the river. It is made happen by the erosion processes and also often because of illegal logging in upstream . Segara Anakan is situated in central Java and is one of the largest lagoon in the world which experiences sedimentation year by year and at present the rest of the watery lagoon is not more than 600 ha. The environment has been being changed. Some of water area conversed to be the land naturally, and it is predicted that the specific biota like eel fish will be vanished. The lagoon cannot be protected anymore from the natural sedimentation processes. Adaptation to this change should, therefore, be made to convert the status quo land - called as land colmatation - to be the more economic activities for the people.
PENGARUH SEDIMENTASI DAN TURBIDITY PADA JEJARING MAKANAN EKOSISTEM AIR MENGALIR (LOTIK) Tjokrokusumo, Sabaruddin Wagiman
Jurnal Hidrosfir Indonesia Vol 3, No 3 (2008)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Sedimentation and turbidity are contributed significantly to decrerasing population of biotic organisms in aquatic ecosystem. Impact to faunal population in lotic environment may be expressed by pervasive change in local food chains starting from primary trophic levels. Decreasing in primary production associated with increasing a number of sediment content dan high in turbidity value and impact on negative level of production of food availability related to a number of zooplankton, insects, freshwater molusca, and then fish. Direct effect of each trophic levels is affected to mortality levels, decreasing physiologicsl function, and rejection, however decreasing food availability at the trophic level that resulted in depressing growthrate, reproduction and recruitment function. The effect of turbidity on aquaticorganisms often as inconsistent in watershed and water treatment. But in this case the different is significantly because of lack of correlation between sediment concentration (mg/liter) and measurement unit (NTU). The use of NTU as a unit measurement in change with suspended sediment (TSS) to predict the effect of aquatic biota in watershed is ambigious. At the same time, NTU measurement in different watershed is depending on the concentration of suspended sediment. To monitore the effect of turbidity in local watershed we are recommended to use the baseline data to investigate the effect of local watershed that arecorrelated betweensuspended sediment and NTU This study could be happenned through a series of monitoring of water flow based on seasonal dynamic and then by using this baseline data, we are creating a useful solution to decrease sediment input into the river water.
Kondisi Hidro-Oseanografi dan Sumberdaya Perikanan Perairan Kepulauan Seribu Sachoemar, Suhendar I.; Amarullah, M. Husni; Aliah, Ratu Siti
Jurnal Hidrosfir Indonesia Vol 2, No 2 (2007)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

An evaluation of the hydro-oceanography characteristics and fisheries resources was conducted in the Seribu Island area, an offshore area of the Jakarta Bay. The area was influenced by monsoonal system that affected the oceanography and water quality situation. The bathymetry within this area was a range of 3 – 50 m with shallow water depth in and surround the islands. While the wave, current speed and tidal range were around 0,5-3,0 m; 5-49 cm/sec and 80 cm, respectively. Water quality status was varied among the area and it is depend on the distance from Jakarta Bay. In the middle and upper part of the area, water quality was within the moderate to the excellent and this condition has promoted the area as potential area of fisheries for both fish culture and fishing. As indication, an abundance of the benthic organism (sea urchin), milk fish, reef fish, seaweed and pelagic fish was found within this area. Keywords: Hydro-oceanography, fisheries resources, Kepulauan Seribu 
STUDI PENENTUAN PRODUKTIVITAS DANAU BUATAN DENGAN MEI (MORPHOEDAPHIC INDEX) ANALYSIS Santoso, Arif Dwi
Jurnal Hidrosfir Indonesia Vol 3, No 2 (2008)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

The morphoedaphic index (MEI) has been used globally as a fish-yield estimator with widely divergent results. The fandamental concept of the MEI embraces standard thermodynamic theory, that of matter ( natrients) transported by energy within an open system. Of the three morphometric factors considered mean depth ,volume and area. The MEI is a reasonable compromise between unmanageable complexity and ecologic over simplification. Even so, its appropriate application presupposes both a fisheries and a limnological expertise, a rare disciplinary combination in those workers who might derive the greatest benefits from its use.In this paper, study on the determining of water productivity in artivicial lakes with morphoedaphic index analysis was showed.
BAKTERI PENGHASIL BIOSURFAKTAN YANG DIISOLASI DARI PULAU LAKI KEPULAUAN SERIBU Riffiani, Rini
Jurnal Hidrosfir Indonesia Vol 5, No 3 (2010)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Biosurfactants are the surface-active molecules synthesized by microorganisms. The microbial surfactant were interesting because of the biodegradable and have many application in industry. With the advantage of environmental compatibility, the demand for biosurfactants has beensteadily increasing and may eventually replace their chemically synthesized counterparts. Marine biosurfactants produced by some marine microorganisms have been paid more attention particularly for the bioremediation of the sea polluted by crude oil. The aim of this research isto screening microorganisms that produce biosurfactant from Pulau Laki, Kepulauan Seribu, Jakarta. The isolate which produce biosurfactant showed by clear ring zone on ONR7a crude oil medium. Three isolates were identified their characteristics based on the composition of nitrogenbase. Molecular identification based on 16S rRNA gene sequences indicated that bacteria had the highest similarity with Marinobacter satoriniensis strain NKSGI, Paracoccus sp and Pseudomonas sp.
PEMANFAATAN SENSOR COASTAL ZONE COLOR SCANNER (CZCS) DAN OCEAN COLOR AND TEMPERATURE SCANNER (OCTS) DALAM IDENTIFIKASI KESUBURAN PERAIRAN DAN DAERAH PENANGKAPAN IKAN Sachoemar, Suhendar I
Jurnal Hidrosfir Indonesia Vol 1, No 3 (2006)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

The spatial distribution of the water productivity bio-optically can be identifiedand detected by using visible infrared sensor of Coastal Zone Color Scanner(CZCS) carried by the satellite Nimbus 7. Since the availability of the ADEOS(Advance Earth Observation Satellite) that carried both sensors of the visiblenear infrared and near infra red on the OCTS (Ocean Color andTemperature Scanner) in August 1996, beside the water productivity,the fishing ground also is hoped can be studied all at once by using twoidentification methods of the SST ( Sea Surface Temperature) and OceanColor.
KERUSAKAN DAERAH ALIRAN SUNGAI DAN PENURUNAN DAYA DUKUNG SUMBERDAYA AIR DI PULAU JAWA SERTA UPAYA PENANGANANNYA Mawardi, Ikhwanuddin
Jurnal Hidrosfir Indonesia Vol 5, No 2 (2010)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Degradation and critical condition of watersheds in Java is showed by the damage of environmental condition, such as vegetation covered area that is less than 20%, big fluctuation of the river debit, frequent floods, land sliding and draught that its frequency is increased every year. These all result in the decrease of water resource capacity in Java. Besides, Java, that is only 7% of the area of Indonesia, has the highest population amongst islands in Indonesia and supplies the largest Indonesian economy (60%), needs continuously increase water resource capacity. Efforts to manage water resource through watershed environment rehabilitation, using functional approach (organizational roles) or structural approach likes physical/building rehabilitation is crucial to be carried out especially for the very critical watershed.
STRUKTUR KOMUNITAS DAN KERAGAMAN PLANKTON ANTARA PERAIRAN LAUT DI SELATAN JAWA TIMUR, BALI DAN LOMBOK Sachoemar, Suhendar I; Hendiarti, Nani
Jurnal Hidrosfir Indonesia Vol 1, No 1 (2006)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

A study of the plankton variability and their community structure in the Southern Coastal Area of East Java-Bali-Lombok was conducted to obtain the information of their characteristics and the status of microscopic marine organism in relation to the marine environment on the based of the biological observation. The results show that the marine environment ecologically was stable and productive due to the upwelling occurrencein the South East Monsoon. The plankton communities generally can be found consist of three classes of the phytoplankton (Cyanophyceae, Dinophyceae and Bacillariophyceaea) and two classes of zooplankton (Ciliata and Crustacea). There is no dominance of certain plankton in the observation area and the distribution among the species are relatively proportional.
PENERAPAN TEKNOLOGI PENGELOLAAN AIR DI RAWA LEBAK SEBAGAI USAHA PENINGKATAN INDEKS TANAM DI KABUPATEN MUARA ENIM Djamhari, Sudaryanto
Jurnal Hidrosfir Indonesia Vol 4, No 1 (2009)
Publisher : Jurnal Hidrosfir Indonesia

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Abstract

Lebak bog farm (fresh water) potency in big enough Muara Enim District, South Sumatera, that is 12.684 hectare, what consist of 6.342 hectare shallow/superficial lebak, 3.805,2 hectare middle lebak, and 2.536,8hectare deep lebak. Lebak bog farm exploiting specially causeway lebak or skin-deep have constraint, that is newly can be exploited in the situation irrigate wet up to height of water ± 30 cm, is later then cultivated by other food crop or paddy while at dry condition cannot cultivate, with such condition of farm can only cultivate once plant in one year (IP 100 %). To overcome the above mentioned problem is way of which is gone through is by applying technology management of better water by making surjan rice field and constructively pump irrigating of problems of water can overcome, goodness when the rains and alsowhen dry season, so that lebak bog farm can be laboured by thrice planting in one year ( IP 300 %).

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