Distributions and Fluxes of Nitrogen and Phosphorus Nutrients in Porewater Sediments in the Estuary of Jepara Indonesia

• Autorzy: Maslukah Lilik , Wulandari Sri Yulina , Prasetyawan Indra Budi , Zainuri Muhammad

Identyfikatory

DOI

10.12911/22998993/95093

• Języki publikacji: EN

Abstrakty

EN

River is a location that is responsible for the main transport of nutrient flow from land to estuary and oceans. The nutrients that are adsorbed by the solid phase can be deposited and stored in the sediment. Sediments in estuaries and beaches have an important role in storing or removing nutrients from or to the water column. The presence of nutrients in porewater interacts with sediment and water column. In general, the nutrients that have a role as limiting factors for life in the waters are nitrogen (N) and phosphorus (P). The release of N and P elements is very important for the estuary and coastal environment, related to the process of regenerating nutrients into the water column. The release mechanism is determined by a diffusion process, based on the difference of concentration between the water column and the porewater. This study aims to determine the concentration of N and P in the porewater and estimate the value of flux. The sediment samples were taken from the Wiso and Serang estuary, Jepara. The components that were analyzed in the porewater are the concentration of N (nitrate, nitrite) and P (phosphate). Nitrite, nitrate and phosphate were determined by using sulphanilamide method and the molybdenum blue method, respectively. Furthermore, the flux value (F) was calculated based on the Fick’s I Law which was corrected by porosity. The results show that the mean concentrations of nitrate (NO₃^-), nitrite (NO₂^-) and phosphate (PO₄^2-) in the sediment water of Serang Estuary are 1.96, 1.41, 3.46 μM and in the Wiso estuary are 3.4, 1.85, 8.22 μM. In general, based on the calculation of flux, the sediments in the Serang and Wiso estuaries have a positive flux. Moreover, the sediment in Jepara acts as a source and releases N and P nutrient into the water column. The Wiso estuary has a higher flux than the Serang estuary.

Słowa kluczowe

EN

pore water; sediment flux; nitrogen nutrient; phosphorus nutrient; Jepara

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2019
• Tom: Vol. 20, nr 2
• Strony: 58--64
• Opis fizyczny: Bibliogr. 32 poz., rys., tab.

Twórcy

autor

Maslukah Lilik

• Department of Oceanography, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. Soedarto, SH., Semarang 50275, Indonesia

autor

Wulandari Sri Yulina

• Department of Oceanography, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. Soedarto, SH., Semarang 50275, Indonesia

autor

Prasetyawan Indra Budi

• Department of Oceanography, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. Soedarto, SH., Semarang 50275, Indonesia

autor

Zainuri Muhammad

• Department of Oceanography, Faculty of Fisheries and Marine Sciences, Diponegoro University, Jl. Prof. Soedarto, SH., Semarang 50275, Indonesia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).