Assesment on Aquatic Environment of Aquaculture Area Using Numerical Modeling (Study Case: in Jepara)

8/14/2019 Assesment on Aquatic Environment of Aquaculture Area Using Numerical Modeling (Study Case: in Jepara)

1/35

ASSESMENT ON AQUATIC ENVIRONMENT OFAQUACULTURE AREA USING NUMERICAL MODELING(STUDY CASE: IN JEPARA COASTAL WATERS, INDONESIA)

Widodo S. Pranowo, Agus Supangat, Nining S. Ningsih

The 6th Presentation of Foundation Assited Research Findings OverseasSasana Budaya Ganesha, Bandung, December 16, 2004


2/35

I ts part of main research:I ts part of main research:

ASSESSMENT OF AQUATIC ENVIRONMENTASSESSMENT OF AQUATIC ENVIRONMENTQUALITY FOR SHRIMPS & FISHES INQUALITY FOR SHRIMPS & FISHES IN

INDONESIA MOSTLY EXPORTED TO JAPANINDONESIA MOSTLY EXPORTED TO JAPAN

Tim leader:Tim leader: Dr.Dr.AgusAgus SupangatSupangat, DEA, DEA

Members:Members:

Dr.Dr. NoorsalamNoorsalam R.R. NganroNganro, Dr. Eng., Dr. Eng. NiningNining S.S. NingsihNingsih, Denny N.S,, Denny N.S,

Sri Nova,Sri Nova, WidodoWidodo S.S. PranowoPranowo, Dian, Dian NoorNoor HandianiHandiani,, RinnyRinny CempakaCempaka,,

FredyFredy NuriatNuriat,, PianPian SopianSopian, A., A. MirojinMirojin, A., A. RiyanRiyan,, WiwinWiwin T.T. WinartoWinarto

Funded by:Funded by:

THE ASAHI GLASS FOUNDATION OVERSEAS RESEARCH GRANTTHE ASAHI GLASS FOUNDATION OVERSEAS RESEARCH GRANT -- 20002000


3/35

LocationLocation


4/35

Flow Chart of ResearchFlow Chart of Research

Organic Nitrogen

Ammonium Nitrate Microplankton-N

Zooplankton-N Detrital-N

Serang river, Kenceng canal,Gawe canal, Langgar canal

FieldObservation Labs.Analyzing Literature &Secondary data

CONCLUSION

DISTRIBUTIONSOF NITROGENCOMPOUNDS

ModelCOHERENS

ORGANIC NITROGEN(Domestic & Aquaculture waste)


5/35

MODEL AREAMODEL AREA

Coarsest grid: (12,960 km2)

x = y = 4,000 meterst = 12 second

Finer grid: (1248 km

2

)x = y = 400 meterst = 8 second

Finest grid: (88 km2)

x = y = 100 meterst = 4 second

Bokor

PatchReef

Lemah

Abang


6/35

Current Pattern in Coarsest Grid Area


7/35

Current Pattern in Finer Grid Area


8/35

Current Pattern in Finest Grid Area


9/35

Verification of Sea Surface Elevation(in Coarsest Grid Area)


10/35

Verification of Sea Surface Elevation(in Finer Grid Area)


11/35

Verification of Sea Surface Elevation(in Finest Grid Area)


12/35

Verification of Current Components


13/35

Verification of Totally Currents


14/35

Biological Parameterization


15/35

Initial Condition


16/35

Distributions of Organic Nitrogen during spring ebb tideDistributions of Organic Nitrogen during spring ebb tide


17/35

Distributions of Organic Nitrogen during spring flood tideDistributions of Organic Nitrogen during spring flood tide


18/35

Distributions of Ammonium during spring ebb tide


19/35

Distributions of Ammonium during spring flood tideDistributions of Ammonium during spring flood tide


20/35

Distributions of Nitrate during spring ebb tide


21/35

Distributions of Nitrate during spring flood tideDistributions of Nitrate during spring flood tide


22/35

Distributions ofDistributions ofMicroplanktonMicroplankton--N during spring ebb tideN during spring ebb tide


23/35

Distributions ofDistributions ofMicroplanktonMicroplankton--N during spring flood tideN during spring flood tide


24/35

Distributions of ZooplanktonDistributions of Zooplankton--N during spring ebb tideN during spring ebb tide


25/35

Distributions of ZooplanktonDistributions of Zooplankton--N during spring flood tideN during spring flood tide


26/35

Distributions ofDistributions ofDetritalDetrital--N during spring ebb tideN during spring ebb tide


27/35


28/35

The Stations are for verifications and point sources ofThe Stations are for verifications and point sources of

nitrogen compounds. Sketch in the finest grid modelnitrogen compounds. Sketch in the finest grid modelareaarea


29/35

Verification of Organic Nitrogen concentrations(March 19, 2001)


30/35

Verification of Ammonium concentrations(March 19, 2001)


31/35

Verification of Nitrate concentrations(March 19, 2001)


32/35

Simulation results compare with Standard forAquaculture

No Blooming1.4111.411MicroplanktonMicroplankton4.4.

< 200 mg/l **)


33/35

Conclusions (1)

The result of simulation in finest gridThe result of simulation in finest gridarea indicate, generally at condition ofarea indicate, generally at condition ofspring tide, current inspring tide, current in JeparaJepara coastalcoastal

waters move to Northeast at the timewaters move to Northeast at the timeof water go to ebb. And thenof water go to ebb. And thenconversely make a move towardconversely make a move toward

Southwest at the time water go toSouthwest at the time water go toflood, with current maximumflood, with current maximum0,235 m / second.0,235 m / second.


34/35

Conclusions (2)

Range of the simulated concentrations of OrganicRange of the simulated concentrations of OrganicNitrogen and Ammonium are 0.003Nitrogen and Ammonium are 0.003 0.072 mg/l0.072 mg/land 0.002and 0.002 0.066 mg/l, respectively. They are0.066 mg/l, respectively. They areabout 0.002about 0.002 1.055 mg/l for Nitrate and 0.0011.055 mg/l for Nitrate and 0.0012.290 mg/l for2.290 mg/l for MicroplanktonMicroplankton--N. Meanwhile, rangeN. Meanwhile, range

of the simulated concentrations of Zooplanktonof the simulated concentrations of Zooplankton--NNandand DetritalDetrital--N are 3.814N are 3.814 4.710 mg/l and 0.0354.710 mg/l and 0.0351.498 mg/l, respectively. The concentrations of1.498 mg/l, respectively. The concentrations ofNitrogen compounds simulated by the model stillNitrogen compounds simulated by the model stillmeet the water quality standard for marinemeet the water quality standard for marine

organism recommended by Indonesianorganism recommended by Indonesiangovernment. Therefore, thegovernment. Therefore, the JeparaJepara waters are stillwaters are stillsuitable regions forsuitable regions for fish andfish and shrimpshrimp pond cultures.pond cultures.


35/35

Thank YouThank You

Documents

Assesment on Aquatic Environment of Aquaculture Area Using Numerical Modeling (Study Case: in Jepara)