IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v15y2018i11p2348-d178021.html
   My bibliography  Save this article

Effects of Weir Construction on Phytoplankton Assemblages and Water Quality in a Large River System

Author

Listed:
  • Hae-Jin Lee

    (Nakdong River Environment Research Center, National Institute of Environmental Research, Goryeong 40103, Korea)

  • Hae-Kyung Park

    (Nakdong River Environment Research Center, National Institute of Environmental Research, Goryeong 40103, Korea)

  • Se-Uk Cheon

    (Geum River Environment Research Center, National Institute of Environmental Research, Okcheon 29027, Korea)

Abstract

Flow regulation is one of the most common anthropogenic factors affecting rivers worldwide. In Korea, 16 weirs were constructed along four major rivers from 2009 to 2012. This study aimed to elucidate initial changes in physical, chemical, and biological variables after the construction of consecutive weirs on the Nakdong River, a major large river system. Water quality variables and phytoplankton cell densities were investigated at eight representative sites and compared with the data recorded before the weir construction. There were spatial and temporal changes in the hydraulic retention time (HRT), total phosphorus (TP), and chlorophyll a concentrations among the eight weir sections. HRT increased after the weir construction, while TP and chlorophyll a tended to decrease from the middle to lower section of the Nakdong River. Furthermore, differences were observed in the phytoplankton community composition between 2006–2007 and 2013. There was a marginal decrease in the duration of centric diatom ( Stephanodiscus hantzschii ) blooms after weir construction. However, Microcystis aeruginosa proliferated more extensively during summer and autumn than it did before the weir construction. Our results suggest that changes in hydrological factors, in response to consecutive weir construction, may contribute to greater physical, chemical, and ecological variability.

Suggested Citation

  • Hae-Jin Lee & Hae-Kyung Park & Se-Uk Cheon, 2018. "Effects of Weir Construction on Phytoplankton Assemblages and Water Quality in a Large River System," IJERPH, MDPI, vol. 15(11), pages 1-14, October.
  • Handle: RePEc:gam:jijerp:v:15:y:2018:i:11:p:2348-:d:178021
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/15/11/2348/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1660-4601/15/11/2348/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Christoph Humborg & Venugopalan Ittekkot & Adriana Cociasu & Bodo v. Bodungen, 1997. "Effect of Danube River dam on Black Sea biogeochemistry and ecosystem structure," Nature, Nature, vol. 386(6623), pages 385-388, March.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Namsrai Jargal & Ho-Seong Lee & Kwang-Guk An, 2021. "Long-Term Water Quality Patterns in an Estuarine Reservoir and the Functional Changes in Relations of Trophic State Variables Depending on the Construction of Serial Weirs in Upstream Reaches," IJERPH, MDPI, vol. 18(23), pages 1-17, November.
    2. Jongchan Kim & Andreja Jonoski & Dimitri P. Solomatine & Peter L. M. Goethals, 2023. "Decision Support Framework for Optimal Reservoir Operation to Mitigate Cyanobacterial Blooms in Rivers," Sustainability, MDPI, vol. 15(17), pages 1-28, August.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Xia Luo & Xinyi Xiang & Guoyi Huang & Xiaorui Song & Peijia Wang & Kaidao Fu, 2019. "Bacterial Abundance and Physicochemical Characteristics of Water and Sediment Associated with Hydroelectric Dam on the Lancang River China," IJERPH, MDPI, vol. 16(11), pages 1-19, June.
    2. Ruonan Wang & Wenqi Peng & Xiaobo Liu & Cuiling Jiang & Wenqiang Wu & Xuekai Chen, 2020. "Characteristics of Runoff Variations and Attribution Analysis in the Poyang Lake Basin over the Past 55 Years," Sustainability, MDPI, vol. 12(3), pages 1-23, January.
    3. Xiangnan Li & Baisha Weng & Denghua Yan & Tianling Qin & Kun Wang & Wuxia Bi & Zhilei Yu & Batsuren Dorjsuren, 2019. "Anthropogenic Effects on Hydrogen and Oxygen Isotopes of River Water in Cities," IJERPH, MDPI, vol. 16(22), pages 1-14, November.
    4. Na Li & Lachun Wang & Chunfen Zeng & Dong Wang & Dengfeng Liu & Xutong Wu, 2016. "Variations of Runoff and Sediment Load in the Middle and Lower Reaches of the Yangtze River, China (1950-2013)," PLOS ONE, Public Library of Science, vol. 11(8), pages 1-18, August.
    5. Yao Gong & Zhigang Yu & Qingzhen Yao & Hongtao Chen & Tiezhu Mi & Jiaqiang Tan, 2015. "Seasonal Variation and Sources of Dissolved Nutrients in the Yellow River, China," IJERPH, MDPI, vol. 12(8), pages 1-20, August.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:15:y:2018:i:11:p:2348-:d:178021. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.