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Unraveling Coastal Pollution: The Hidden Threats to Pekalongan's Estuarine Ecosystem.

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Title: Unraveling Coastal Pollution: The Hidden Threats to Pekalongan's Estuarine Ecosystem.
Authors: Sugianto, Denny Nugroho1,2 (AUTHOR), Helmi, Muhammad1,2 (AUTHOR), Candrasekar, Anindita Rahma3 (AUTHOR), Widyani, Afidhah Puspita1 (AUTHOR), Zainuri, Muhammad1,2 (AUTHOR) muhammadzainuri@lecturer.undip.ac.id, Iranda, Felia1 (AUTHOR), Widada, Sugeng1 (AUTHOR), Rochaddi, Baskoro1 (AUTHOR), Levina, Erlinda Sofiani1 (AUTHOR), Fadhillah, Shafa Nur1 (AUTHOR), Amalya, Afroh1 (AUTHOR), Agnadiva, Alisha Khansa1 (AUTHOR), Febrilian, Afif Ahmad1 (AUTHOR), Simatupang, Ariel Oscar Paskario1 (AUTHOR), Afifah, Hajar1 (AUTHOR), Simangunsong, Felix Gok Asi1 (AUTHOR), Jihadi, Muhammad Shulhan1,2 (AUTHOR)
Source: Environmental Quality Management. Fall2025, Vol. 35 Issue 1, p1-12. 12p.
Subject Terms: *Estuarine ecology, *Water quality, *Cities & towns, *Tide-waters, *Marine pollution, *Phosphates, *Nitrates, Environmental history
Abstract: The various anthropogenic activities around the river in Pekalongan can influence the dynamics of the estuary. The estuary is important in fisheries, particularly small pelagic fish, related to plankton abundance and aquatic fertility. The recent tendency of the coastal development area raises the establishment of small‐scale industries, textile industries, and ecotourism, which carry a significant amount of disposal waste as well as organic matter. The tidal flooding influenced the dynamic of organic matter in Pekalongan, which increased yearly due to climate change. This study aims to determine the content and distribution of nitrate, phosphate, total suspended solids (TSS), and chlorophyll‐a (CHA) collected from 2021 to 2024 at four rivers in Pekalongan Regency based on a geospatial approach. The study results showed that the CHA contents from 2021 to 2024 varied from 0.196 to 2.473 µg/L, 0.022 to 0.379 µg/L, 0.002 to 2.414 µg/L, and 0.21 to 3.083 µg/L; TSS contents from 2021 to 2024 varied from 4 to 26 mg/L, 64.7 to 149 mg/L, 16.3 to 214 mg/L, and 19 to 299 mg/L; nitrate contents from 2023 to 2024 varied from 0.004 to 1.31 mg/L and 0.004 to 0.959 mg/L; and phosphate contents from 2023 to 2024 ranged from 0.003 to 0.767 mg/L and 0.001 to 1.017 mg/L. The concentration of CHA and TSS varied each year. However, the existing pattern shows an increase in TSS concentration and a decrease in CHA values, which indicates a reduction in water quality. The nitrate concentration tends to decrease, and the phosphate concentration has increased recently. The dynamic distribution of organic matter occurs due to the influence of tidal currents, longshore currents, and the east monsoon wind. The data collection showed the tendency for environmental quality degradation due to the limited carrying capacity and shortage of remediation. [ABSTRACT FROM AUTHOR]
Copyright of Environmental Quality Management is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Unraveling Coastal Pollution: The Hidden Threats to Pekalongan's Estuarine Ecosystem.
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  Data: The various anthropogenic activities around the river in Pekalongan can influence the dynamics of the estuary. The estuary is important in fisheries, particularly small pelagic fish, related to plankton abundance and aquatic fertility. The recent tendency of the coastal development area raises the establishment of small‐scale industries, textile industries, and ecotourism, which carry a significant amount of disposal waste as well as organic matter. The tidal flooding influenced the dynamic of organic matter in Pekalongan, which increased yearly due to climate change. This study aims to determine the content and distribution of nitrate, phosphate, total suspended solids (TSS), and chlorophyll‐a (CHA) collected from 2021 to 2024 at four rivers in Pekalongan Regency based on a geospatial approach. The study results showed that the CHA contents from 2021 to 2024 varied from 0.196 to 2.473 µg/L, 0.022 to 0.379 µg/L, 0.002 to 2.414 µg/L, and 0.21 to 3.083 µg/L; TSS contents from 2021 to 2024 varied from 4 to 26 mg/L, 64.7 to 149 mg/L, 16.3 to 214 mg/L, and 19 to 299 mg/L; nitrate contents from 2023 to 2024 varied from 0.004 to 1.31 mg/L and 0.004 to 0.959 mg/L; and phosphate contents from 2023 to 2024 ranged from 0.003 to 0.767 mg/L and 0.001 to 1.017 mg/L. The concentration of CHA and TSS varied each year. However, the existing pattern shows an increase in TSS concentration and a decrease in CHA values, which indicates a reduction in water quality. The nitrate concentration tends to decrease, and the phosphate concentration has increased recently. The dynamic distribution of organic matter occurs due to the influence of tidal currents, longshore currents, and the east monsoon wind. The data collection showed the tendency for environmental quality degradation due to the limited carrying capacity and shortage of remediation. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Environmental Quality Management is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1002/tqem.70133
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 1
    Subjects:
      – SubjectFull: Estuarine ecology
        Type: general
      – SubjectFull: Water quality
        Type: general
      – SubjectFull: Cities & towns
        Type: general
      – SubjectFull: Tide-waters
        Type: general
      – SubjectFull: Marine pollution
        Type: general
      – SubjectFull: Phosphates
        Type: general
      – SubjectFull: Nitrates
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      – SubjectFull: Environmental history
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      – TitleFull: Unraveling Coastal Pollution: The Hidden Threats to Pekalongan's Estuarine Ecosystem.
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