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Long term trends and dynamics of dissolved organic carbon (DOC) in a subtropical Reservoir basin

Acidification; Atmospheric chemistry; Atmospheric temperature; Deposition; Dissolution; Meteorological problems; Organic carbon; Rivers; Stream flow; Atmospheric depositions; Dissolved organic carbon; Hydrological factors; Long-term trend; Positive correlations; Seasonal variability; Stream; Streamw...

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Main Authors: Chow M.F., Lai C.-C., Kuo H.-Y., Lin C.-H., Chen T.-Y., Shiah F.-K.
Other Authors: 57214146115
Format: Article
Published: MDPI AG 2023
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spelling my.uniten.dspace-231532023-05-29T14:38:02Z Long term trends and dynamics of dissolved organic carbon (DOC) in a subtropical Reservoir basin Chow M.F. Lai C.-C. Kuo H.-Y. Lin C.-H. Chen T.-Y. Shiah F.-K. 57214146115 36628881300 36628692800 56110362400 58070368300 7003601734 Acidification; Atmospheric chemistry; Atmospheric temperature; Deposition; Dissolution; Meteorological problems; Organic carbon; Rivers; Stream flow; Atmospheric depositions; Dissolved organic carbon; Hydrological factors; Long-term trend; Positive correlations; Seasonal variability; Stream; Streamwater chemistry; Reservoirs (water); atmospheric deposition; concentration (composition); dissolved organic carbon; environmental factor; ionic composition; long-term change; oligotrophic environment; reservoir; streamwater; subtropical region; temperature effect; trend analysis; Feitsui Reservoir; Taiwan This study evaluates the long term trends and seasonal patterns of dissolved organic carbon (DOC) concentration in the Fei-Tsui Reservoir basin in Northern Taiwan during the period of 2000 to 2015. The non-parametric seasonal Mann-Kendall test was conducted to identify the trends of DOC and its potential drivers (e.g., temperature, runoff, atmospheric acid deposition and stream water chemistry). The monthly tributaries and water surface DOC concentrations in Fei-Tsui Reservoir had showed strong temporal and seasonal variability. The sulfate (SO4) concentration had exhibited statistically significant decreasing trend over a period of 16 years. The decreasing trends of anions (SO4 and NO3) and base cations (Ca and Mg) as well as increasing trends of pH and acidification index (ACI) in Fei-Tsui Reservoir and streams indicated recovery from acidification. However, there was no significant annual trend in DOC concentration of Fei-Tsui Reservoir and streams. Significant positive correlation was obtained between DOC and trophic state index of Fei-Tsui Reservoir. The results suggested that DOC concentration at the water surface of Fei-Tsui Reservoir was mainly driven by the re-oligotrophication and temperature effects rather than a decrease in atmospheric sulfur deposition. Stream DOC concentration was largely determined by the temporal variability in temperature and rainfall. We concluded that climatic and hydrological factors are the dominant drivers for stream DOC dynamics in the study. � 2017 by the authors. Final 2023-05-29T06:38:02Z 2023-05-29T06:38:02Z 2017 Article 10.3390/w9070545 2-s2.0-85025476327 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025476327&doi=10.3390%2fw9070545&partnerID=40&md5=58588d9cd5bd411a520394f5af12c678 https://irepository.uniten.edu.my/handle/123456789/23153 9 7 545 All Open Access, Gold, Green MDPI AG Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Acidification; Atmospheric chemistry; Atmospheric temperature; Deposition; Dissolution; Meteorological problems; Organic carbon; Rivers; Stream flow; Atmospheric depositions; Dissolved organic carbon; Hydrological factors; Long-term trend; Positive correlations; Seasonal variability; Stream; Streamwater chemistry; Reservoirs (water); atmospheric deposition; concentration (composition); dissolved organic carbon; environmental factor; ionic composition; long-term change; oligotrophic environment; reservoir; streamwater; subtropical region; temperature effect; trend analysis; Feitsui Reservoir; Taiwan
author2 57214146115
author_facet 57214146115
Chow M.F.
Lai C.-C.
Kuo H.-Y.
Lin C.-H.
Chen T.-Y.
Shiah F.-K.
format Article
author Chow M.F.
Lai C.-C.
Kuo H.-Y.
Lin C.-H.
Chen T.-Y.
Shiah F.-K.
spellingShingle Chow M.F.
Lai C.-C.
Kuo H.-Y.
Lin C.-H.
Chen T.-Y.
Shiah F.-K.
Long term trends and dynamics of dissolved organic carbon (DOC) in a subtropical Reservoir basin
author_sort Chow M.F.
title Long term trends and dynamics of dissolved organic carbon (DOC) in a subtropical Reservoir basin
title_short Long term trends and dynamics of dissolved organic carbon (DOC) in a subtropical Reservoir basin
title_full Long term trends and dynamics of dissolved organic carbon (DOC) in a subtropical Reservoir basin
title_fullStr Long term trends and dynamics of dissolved organic carbon (DOC) in a subtropical Reservoir basin
title_full_unstemmed Long term trends and dynamics of dissolved organic carbon (DOC) in a subtropical Reservoir basin
title_sort long term trends and dynamics of dissolved organic carbon (doc) in a subtropical reservoir basin
publisher MDPI AG
publishDate 2023
_version_ 1806426485678931968
score 13.188404

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