Distributions of dissolved inorganic nitrogen to estimate trophic state in Jakarta Bay

Prismayanti, A. D.; Damar, Ario; Pratiwi, Niken Tunjung Murti

doi:10.1088/1755-1315/241/1/012023

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…Data from 2001, 2007, and 2013 have been published previously [17], and those representing the dry season were selected for this paper. Some of the dissolved inorganic nitrogen (DIN) data from 2017 are presented in another study [18]. The dates of the measurement campaigns are shown in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Phytoplankton Biomass Dynamics in Tropical Coastal Waters of Jakarta Bay, Indonesia in the Period between 2001 and 2019

Damar

Colijn

Hesse

et al. 2020

JMSE

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A study of nutrients, underwater light dynamics, and their correlation with phytoplankton biomass was conducted in the tropical estuary of Jakarta Bay, Indonesia, in the dry season during the period from 2001 to 2019. This study analyzed the spatial and temporal dynamics of phytoplankton biomass and its correlation with phytoplankton biomass. There was significant increase in nutrient concentration in Jakarta Bay, with annual means of 27.97 µM dissolved inorganic nitrogen (DIN) and 11.31 µM phosphates in 2001, increasing to 88.99 µM DIN and 25.92 µM phosphates in 2019. Increased mean nutrient concentrations were accompanied by increased mean phytoplankton biomass, from 15.81 µg Chl-a L−1 in 2001 to 21.31 µg Chl-a L−1 in 2019. The eutrophication status of Jakarta Bay waters was calculated using the Tropical Index for Marine Systems eutrophication index, which showed increased areas of hyper-eutrophic and eutrophic zones, while the mesotrophic area decreased. The hyper-eutrophic zone dominated the areas around river mouths and the inner part of the bay, while eutrophic status was observed in the middle part of the bay and mesotrophic status was found in the outer part of the bay. The area of hyper-eutrophic water increased 1.5-fold, from 75.1 km2 in 2001 to 114.0 km2 in 2019. Increasing eutrophication of the bay has had negative ecological consequences including algal blooms, hypoxic conditions, and mass mortality of marine biota, and it urgently requires remediation.

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Section: Methodsmentioning

confidence: 99%

Phytoplankton Biomass Dynamics in Tropical Coastal Waters of Jakarta Bay, Indonesia in the Period between 2001 and 2019

Damar

Colijn

Hesse

et al. 2020

JMSE

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“…In Jakarta Bay, Damar et al (2020) reported an increase in eutrophic area and a decrease in mesotrophic area from 2001 to 2019. The eutrophic area is found in the coastal zone and the center of the bay (Prismayanti et al 2019). Suteja et al (2021) recently updated the trophic status of Benoa Bay and reported a TRIX of 4.9, thus classifying the location as mesotrophic.…”

Section: Trophic Indexmentioning

confidence: 99%

Deepening Knowledge of Nutrient Dynamics in Coastal Waters

Meirinawati

Wahyudi

2022

AJSTD

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Nutrients are important compounds in waterbodies that regulate primary productivity and phytoplankton growth, the basis of food webs. Increased nutrient concentration has become a serious concern because it causes eutrophication and threatens the sustainability of ecosystems. Eutrophication is the process of nutrient enrichment in water bodies that affects their productivity and decreases water quality. Although information about nutrient distribution, limiting nutrients, and nutrient budgets is important for coastal water management, studies of wide-scale nutrient dynamics in Indonesian waters remain limited. To provide comprehensive data on nutrients, this review summarized the concentrations and compositions of nutrients in coastal waters, compared the limiting nutrients in various coastal waters based on the Redfield ratio, and described the factors affecting nutrient budgets using the database in ScienceDirect and Google Scholar. Curation was performed to summarize the nutrient dynamics in coastal waters. Results showed that nutrient concentration differed in each region due to many factors. Anthropogenic inputs greatly affected nutrients in tropical areas, such as Jakarta Bay (Indonesia). Understanding the quality and characteristics of water can help in managing waterbodies. This study provided knowledge related to nutrient dynamics in Indonesian waters and global biogeochemistry.

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“…Hasil penelitian menunjukkan persen komposisi nitrogen anorganik terlarut di semua titik di perairan Padelegan didominasi oleh amonium. Menurut Prismayanti et al (2019) dalam penelitiannya menunjukkan 15 stasiun, memiliki kadar amonium tertinggi hanya 3 stasiun dalam persen komposisi nitrogen anorganik terlarut di Teluk Jakarta. Menurut Prismayanti et al (2019) dalam penelitiannya menunjukkan persen komposisi nitrogen anorganik terlarut di wilayah estuari Teluk Jakarta didominasi oleh amonium dengan persentase rata-rata 80,48%, disusul oleh nitrat.…”

Section: Persen Komposisi Nitrogen Anorganik Terlarutunclassified

Distribusi Nitrogen Anorganik Terlarut di Perairan Padelegan, Kecamatan Pademawu, Kabupaten Pamekasan

Akbar,

Kartika,

Pratiwi

et al. 2022

Bul. Oseano. Mar.

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Perairan Padelegan merupakan wilayah perairan kompleks yang terdiri dari ekosistem mangrove, estuari, kegiatan akuakultur dan tambak garam. Kegiatan akuakultur dan produksi garam tersebut dapat mempengaruhi kualitas perairan dan kandungan nitrogen anorganik terlarut di perairan Padelegan. Penelitian ini bertujuan untuk mengkaji tentang distribusi nitrogen anorganik dan persen komposisinya pada setiap titik di perairan Padelegan. Pengambilan sampel air dilakukan di perairan Padelegan pada 9 titik. Konsentrasi nitrogen anorganik terlarut memiliki nilai tertinggi terletak di perairan peralihan di sebelah barat, dan konsentrasi terendah terdapat di laut lepas di sebelah tenggara. Persen komposisi distribusi nitrogen anorganik terlarut pada semua titik didominasi oleh kadar amonium (>80%) disusul oleh nitrat (<15%), dan nitrit (<1%). Hasil penelitian menunjukkan nitrogen anorganik terlarut tertinggi pada titik 4 sebesar 7,93 mg/L dan kandungan terendah pada titik 8 sebesar 6,432 mg/L. Berdasarkan hasil tersebut menunjukkan kadar amonium yang mendominasi dalam persen komposisi kandungan nitrogen anorganik terlarut, selanjutnya disusul oleh nitrat dan nitrit. Padelegan waters are complex waters that consist of mangrove, estuary, aquaculture and salt pond ecosystems. These aquaculture and salt production activities can affect the quality of the waters and the content of dissolved inorganic nitrogen in Padelegan waters. This study aims to examine the disorder of inorganic nitrogen and the percent composition at each point in Padelegan waters . Water sampling is carried out in Padelegan waters at 9 points. The highest value of dissolved inorganic nitrogen concentration is located in transitional waters to the west, and the lowest concentration is found in offshore waters to the southeast. Percent of the composition of dissolved inorganic nitrogen distribution at all points is dominated by ammonium content ( >80%) followed by nitrate ( <15% ), and nitrite ( <1%). The results showed the highest dissolved inorganic nitrogen at point 4 was 7.93 mg/L and the lowest content at point 8 was 6.432 mg/L. Based on these results, it puts ammonium levels dominating in percent composition of dissolved inorganic nitrogen content, its cells are overtaken by nitrates and nitrites.

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Distributions of dissolved inorganic nitrogen to estimate trophic state in Jakarta Bay

Cited by 4 publications

References 3 publications

Phytoplankton Biomass Dynamics in Tropical Coastal Waters of Jakarta Bay, Indonesia in the Period between 2001 and 2019

Phytoplankton Biomass Dynamics in Tropical Coastal Waters of Jakarta Bay, Indonesia in the Period between 2001 and 2019

Deepening Knowledge of Nutrient Dynamics in Coastal Waters

Distribusi Nitrogen Anorganik Terlarut di Perairan Padelegan, Kecamatan Pademawu, Kabupaten Pamekasan

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