FLUKTUASI BAHAN ORGANIK DAN SEBARAN NUTRIEN SERTA KELIMPAHAN FITOPLANKTON DAN KLOROFIL-a DI MUARA SUNGAI SAYUNG DEMAK

Rahmawati, Iin; Purnomo, Pujiono Wahyu; Hendrarto, Boedi

doi:10.14710/marj.v3i1.4283

Cited by 16 publications

(13 citation statements)

References 5 publications

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“…Figure 2, shows that the phosphate dispersal in the waters of the BKB is gradually decreasing towards the open sea. This pattern is the same as the results of the research of Rahmawati et al (2014) and Megawati et al (2014), where phosphate concentrations have decreased towards the sea. The confluence of water flows from land and seawater causes a stirring process, which can increase the phosphate concentration at station 1.…”

Section: Discussionsupporting

confidence: 90%

Distribution Patterns of Chlorophyll-a and its Relationship with Phosphate, Nitrate in Banjir Kanal Barat and Banjir Kanal Timur, Semarang, Indonesia

Suryoputro¹,

Pramesti²,

Zainuri³

et al. 2023

Ecol. Eng. Environ. Technol.

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Banjir Kanal Barat (BKB) and Banjir Kanal Timur (BKT) are widely used for various community activities such as residential areas, industry, fish cultivation, and auction. Community activity around BKB and BKT will affect N and P nutrient inputs, which further affects phytoplankton abundance. In this study, phytoplankton biomass was estimated through chlorophyll-a (chl-a) measurements. The purpose of this study was to determine the distribution of the chl-a and determine the influence of phosphate and nitrate in front of the estuary from BKB and BKT. Sampling was carried out at 8 stations from each estuary and was carried out in the dry season. The concentration of chl-a, phosphate, and nitrate is further described in the form of a distribution pattern based on the interpolation method with ArcGIS 10.2 software. The results showed that the average ± sd of chl-a, respectively was 15,781 ± 16.90 mg/m 3 and 17,710 ± 15.31 mg/m 3 , phosphate was 0.0174 ± 0.0057 ppm and 0.0096 ± 0.0164 ppm, nitrate was 2.9086 ± 1.1824 ppm and 1.6919 ± 1.6316 ppm. The distribution pattern of chlorophyll-a and phosphate decreases in concentration towards the sea, while nitrate forms an irregular pattern and has a different pattern in each estuary. Nutrient phosphate has a positive correlation with chlorophyll-a.

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Section: Discussionsupporting

confidence: 90%

Distribution Patterns of Chlorophyll-a and its Relationship with Phosphate, Nitrate in Banjir Kanal Barat and Banjir Kanal Timur, Semarang, Indonesia

Suryoputro¹,

Pramesti²,

Zainuri³

et al. 2023

Ecol. Eng. Environ. Technol.

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“…The correlation of chlorophyll-a to nitrate and phosphate concentration is significant [15]. The results of water quality analysis to nitrate and phosphate concentrations show that waters conditions contain sufficient nutrients needed for growth of phytoplankton, as shown in Table 3, but not for optimal growth.…”

Section: Resultsmentioning

confidence: 91%

The Carbon Sequestration by Phytoplankton in Tropical Lake and Reservoir

Fachrul¹

2019

GEOMATE

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The increasing of atmospheric carbon dioxide has become a public and scientific concern, especially in potential aquatic ecosystem such as lake and reservoir as carbon sequestration is inevitable to decelerate the global warming process. The aim of the study is to estimate carbon sequestration by phytoplankton in tropical lake and reservoir, case study in Maninjau Lake (0°19′S; 100°12′E), West Sumatera Province and Pluit Reservoir (6°6'58.13"S; 106°47'54.69" E), Jakarta Province, Indonesia. The study was conducted in eleven sampling points to represent the lake during in May-July 2016 in Pluit Resevoir and in May-July 2017 in Maninjau Lake. Plankton nets were used for sampling phytoplankton. The determination of sampling points are based on the Indonesian National Standard 6989.57: 2008 regarding the method of sampling of surface water. Phytoplankton sampling was carried out by filtering water samples as much as 100 liters from 50 cm surface water by using a plankton net (25 µm mesh size). To find out the ammount of carbon sequestration an analysis was carried out to measure the abundance of phytoplankton communities and the concentration of chlorophyll-a. The results of this study revealed the abundance of phytoplankton in Maninjau Lake range 78-273-cell/l belonging to 4 classes and carbon sequestration average was 0.0504 mgC/m 3 . However, in Pluit Reservoir abundance range was 72-800 cell/l belonging to 2 classes with carbon sequestration average 0.1181 mgC/m 3 . The study concluded that phytoplankton could give the information about the carbon sequestration rate and as instrumental in formulating efficient strategies related to carbon sequestration.

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“…The result of the degradation process of organic matter, nutrients including NO 3 and PO 4 . Rahmawati et al (2014) explained that the high concentration of chlorophyll-a in the estuary was caused by the higher nutrient input from the land carried by the river flow to the river estuary. Besides, estuaries are a relatively frequent area of churning due to the confluence of fresh water and seawater.…”

Section: The Nutrients Distribution Pattern Of Nitrate and Phosphatementioning

confidence: 99%

Impact of Nutrients and Suspended Particulate Matter on Phytoplankton Chlorophyll-a Biomass, in the Estuary of Kendal, Indonesia

Indrayanti¹,

Maslukah²,

Astariningrum³

et al. 2022

Ecol. Eng. Environ. Technol.

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The Kendal River estuary receives nutrient input from various community activities from the surrounding waters and will indirectly affect the physical and biological quality parameters of the waters. Phytoplankton biomass is a parameter of biological quality, which can be measured based on the concentration of chlorophyll-a, while suspended particulate matter is a parameter of its physical quality. The purpose of this study was to determine the spatial distribution of nutrients and suspended particulate matter and their effect on chlorophyll-a in the Kendal River Estuary. This research was conducted in November 2017. Sampling was carried out at 12 stations representing river, coastal and high seas areas. Chlorophyll-a and nutrients N & P, were measured based on the spectrometric method and SPM using the gravimetric method. Spatial distribution of each parameter using kriging interpolation with ArcGIS. The results showed that chlorophyll-a, nitrate, phosphate, and SPM had a similar spatial distribution pattern, which was high in the estuary area and decreased in concentration towards the sea. The results of the multiple linear regression model analysis between chlorophyll-a on nutrients and SPM followed the formula [chl-a] = -11275 + 5.249 [NO 3 -] + 6.987 [PO 4 2-] + 0.004 [TSS], with a coefficient of determination (R 2 ) of 0.76 . The most influential water quality is phosphate, followed by nitrate and TSS. Based on the chlorophyll-a value, Muara Kendal is categorized as eutrophic.

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FLUKTUASI BAHAN ORGANIK DAN SEBARAN NUTRIEN SERTA KELIMPAHAN FITOPLANKTON DAN KLOROFIL-a DI MUARA SUNGAI SAYUNG DEMAK

Cited by 16 publications

References 5 publications

Distribution Patterns of Chlorophyll-a and its Relationship with Phosphate, Nitrate in Banjir Kanal Barat and Banjir Kanal Timur, Semarang, Indonesia

Distribution Patterns of Chlorophyll-a and its Relationship with Phosphate, Nitrate in Banjir Kanal Barat and Banjir Kanal Timur, Semarang, Indonesia

The Carbon Sequestration by Phytoplankton in Tropical Lake and Reservoir

Impact of Nutrients and Suspended Particulate Matter on Phytoplankton Chlorophyll-a Biomass, in the Estuary of Kendal, Indonesia

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