Next Article in Journal
Laboratory Assessment of Water Permeability Loss of Geotextiles Due to Their Installation in Pervious Pavements
Previous Article in Journal
The Establishment and Rapid Spread of Sagittaria Platyphylla in South Africa
Open AccessArticle

The Effect of Monsoon Rainfall Patterns on Epilithic Diatom Communities in the Hantangang River, Korea

1
Department of Environmental Science, Hanyang University, Seoul 04763, Korea
2
Doohee Institute of Ecological Research, Korea Ecosystem Service Inc., Gyeonggi-do 13814, Korea
3
Department of Life Science, Daejin University, Pochun, Gyunggi 487-711, Korea
4
National Institute of Environmental Research, Incheon 22689, Korea
5
Department of Life Science and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
*
Author to whom correspondence should be addressed.
Water 2020, 12(5), 1471; https://doi.org/10.3390/w12051471
Received: 18 March 2020 / Revised: 17 May 2020 / Accepted: 20 May 2020 / Published: 21 May 2020
(This article belongs to the Special Issue The Ecological Assessment of Rivers and Estuaries: Present and Future)
Most of Korea’s rivers and lakes are subject to physico-chemical disturbances, such as increased water quantity and flow rates, and influx of nitrogen and phosphorus, due to intense rainfall concentrated in the Asian monsoon season. To examine the influence of rainfall on epilithic diatom communities, we measured the diatom distribution and river water quality at 29 sites along the main-stream and tributaries of the Hantangang River, Korea, in the period of 2012–2015. Water quality parameters in the polluted sites had improved following rainfall, but the response of dominant species varied with water quality; the dominant species Nitzschia fonticola decreased in abundance regardless of sampling sites, and the abundance of Achnanthidium minutissimum in the clean sites and Nitzschia palea in the polluted sites increased after rainfall, respectively. The community dynamic index (CDI) showed that the most obvious shift of epilithic diatom community occurred in the mid-polluted sites in 2013 with the highest rainfall. This suggest that the effect of rainfalls on the epilithic diatom community is dependent on various parameters, such as the magnitude of rainfall, water quality and its biotic compositions of diatom communities, but it also indicates that improving the water quality of rivers is important to promote the resilience of diatom communities to extremes of precipitation. Further investigation is needed to generalize the effects of monsoon rainfall on the epilithic diatom communities, considering rivers with different environmental characteristics. View Full-Text
Keywords: Asia-monsoon; community dynamic index; distance method; principal component analysis; epilithic diatom; rainfall; water quality Asia-monsoon; community dynamic index; distance method; principal component analysis; epilithic diatom; rainfall; water quality
Show Figures

Figure 1

MDPI and ACS Style

Cho, I.-H.; Kim, H.-K.; Lee, M.-H.; Kim, Y.-J.; Lee, H.; Kim, B.-H. The Effect of Monsoon Rainfall Patterns on Epilithic Diatom Communities in the Hantangang River, Korea. Water 2020, 12, 1471.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop