Sedimentary Organic Matter and Phosphate along the Kapuas River (West Kalimantan, Indonesia)

Loh, Pei Sun; Chen, Chen‐Tung Arthur; Anshari, Gusti Z.; Lou, Jie-Chung; Wang, Jough-Tai; Wang, Shu-Lun; Wang, Bing-Jye

doi:10.1155/2016/6874234

Cited by 5 publications

(5 citation statements)

References 30 publications

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“…Changes in land use have caused the release of much organic carbon that had been stored in the soil. Furthermore, the number of dams is increasing, hence reducing the sediment transport and riverine flux [ Anshari et al ., ; Chen , ; Evans et al ., ; Loh et al ., ; Moore et al ., ].…”

Section: Study Areamentioning

confidence: 99%

Riverine carbon fluxes to the South China Sea

et al. 2017

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The high precipitation around Southeast Asia results in abundant freshwater outflow, which transports terrestrial dissolved and particulate material to the world's largest marginal sea, namely, the South China Sea (SCS). To estimate the riverine carbon flux to the SCS, carbonate data from 42 rivers were collected. These results, combined with literature data for 13 rivers, indicate that the concentrations of dissolved inorganic carbon (DIC) are positively correlated with the cation exchange capacity and the bulk density, except for the Low Discharge category. The highest DIC concentration and flux are in the Low and Medium Discharge categories. Negative correlations exist between dissolved organic carbon (DOC) concentrations and the base saturation in the Low and High Discharge categories and between DOC and bulk density in the Low and Medium Discharge categories. However, the correlation between the DOC concentration and the organic carbon content in the soil is only significant in the Medium Discharge category. Once the negative exponential relationships between the particulate inorganic carbon (PIC) or the particulate organic carbon (POC) and the total suspended matter are determined, these can be used to estimate the PIC and POC carbon fluxes. Of the annual riverine carbon flux, 83.0 ± 8.1 Tg C, 40.14 ± 6.11 Tg is DIC, 25.03 ± 4.54 Tg is DOC, 1.83 ± 0.35 Tg is PIC, and 16.03 ± 2.87 Tg is POC. The total discharge amounts to 6.2–10.3% of the global riverine discharge for a sea covering only 1% of the world's ocean surface area and for watersheds covering only 2.2% of the global land mass.

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Section: Study Areamentioning

confidence: 99%

Riverine carbon fluxes to the South China Sea

et al. 2017

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“…Oleh karena itu terlihat di stasiun E walaupun tekstur sedimennya berupa pasir namun karena mendapatkan limpasan dari daratan maka kadar bahan organiknya menjadi tertinggi dibandingkan stasiun lainnya. Menurut Sun Loh et al (2016), curah hujan yang tinggi dapat membawa partikel-partikel organik seperti serpihan kayu, daun, bahkan terkadang terikat dengan mineral sehingga dapat mempengaruhi pasokan material organik dan anorganik menjadi sedimen.…”

Section: Kandungan Bahan Organik Dalam Sedimenunclassified

Kandungan Bahan Organik dan Karakteristik Sedimen di Perairan Betahwalang, Demak

2021

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Betahwalang is a coastal village located in Demak Regency. As a village located in a coastal area, the local population mostly relies on the fisheries sector sourced from sea products. Betahwalang Village has a Mangrove Ecosystem, which is included in the tidal river area of Betahwalang Village. This study aims to look at the comparison of organic matter levels in sediments during tidal and receding river water. Sampling in the field was conducted in March 2019. Sediment samples were taken from 5 stations divided into jetty, mangrove, estuary, and beach areas, where each station was repeated 3 times during high tide and low tide. Analysis of organic matter content of sediment samples using gravimetric methods and data analysis using Non-Parametric Kruskal-Wallis H. The results showed the highest levels of sediment organic matter at station 5 were 74.87 ± 1.81% (low tide) and 66.99 ± 0.38% (high tide) and the lowest sediment organic matter content. at station 4 were 31.56 ± 2.14% (low tide) and 26.93 ± 2.51% (high tide). These results indicate that the organic matter content in the sediment at low tide is higher than at high tide with results that are not significantly different (sig = 0.05). Betahwalang adalah desa pesisir yang terletak di Kabupaten Demak. Sebagai desa yang terletak di wilayah pesisir, penduduk setempat sebagian besar mengandalkan sektor perikanan yang bersumber dari hasil laut. Desa Betahwalang memiliki Ekosistem Mangrove yang termasuk dalam wilayah sungai pasang surut di Desa Betahwalang. Tujuan dari penelitian ini adalah untuk melihat kondisi perairan sungai Betahwalang ditinjau dari kandungan bahan organik dalam sedimen selama pasang dan surut. Pengambilan sampel di lapangan dilakukan pada bulan Maret 2019. Sampel sedimen diambil dari 5 stasiun yang dibagi menjadi area dermaga, mangrove, muara dan pantai, di mana setiap stasiun diulang 3 kali selama pasang dan surut. Analisis kandungan bahan organik sampel sedimen menggunakan metode gravimetri, dan analisis data menggunakan Non-Parametrik Kruskal-Wallis H. Hasil penelitian menunjukkan kadar bahan organik sedimen tertinggi di stasiun 5 sebesar 74,87 ± 1,81% (air surut) dan 66,99 ± 0,38 % (air pasang) dan kandungan bahan organik sedimen terendah. di stasiun 4 sebesar 31,56 ± 2,14 % (air surut) dan 26,93 ± 2,51% (air pasang). Hasil ini menunjukkan bahwa kandungan bahan organik dalam sedimen pada saat air surut lebih tinggi daripada saat air pasang dengan hasil yang tidak berbeda nyata (sig=0,05).

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“…The quality standard is the limit of orthophosphate in the form of phosphate as one of the macronutrient components. This nutrient has a function as a nutrient for phytoplankton [LOH et al 2016;PIRANTI et al 2019]. This type of result is one of the factors that triggers an explosion of algae in water bodies.…”

Section: Water Quality Analysismentioning

confidence: 99%

Journal of Water and Land Development

Novita,

Pradana,

Purnomo

et al. 2020

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Sedimentary Organic Matter and Phosphate along the Kapuas River (West Kalimantan, Indonesia)

Cited by 5 publications

References 30 publications

Riverine carbon fluxes to the South China Sea

Riverine carbon fluxes to the South China Sea

Kandungan Bahan Organik dan Karakteristik Sedimen di Perairan Betahwalang, Demak

Journal of Water and Land Development

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