Cargando…

Influence of Zooplankton and Environmental Factors on Clear-Water Phase in Lake Paldang, South Korea

Lake Paldang is a complex water system with both fluvial and lacustrine characteristics and the largest artificial dam lake in South Korea. In this study, the different occurrence patterns and causes of the clear-water phase (CWP) were investigated using water quality and hydrological factors at fou...

Descripción completa

Detalles Bibliográficos
Autores principales: Sim, Younbo, Byeon, Myeong Seop, Kim, Keonhee, Yu, Soon Ju, Im, Jong Kwon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8297077/
https://www.ncbi.nlm.nih.gov/pubmed/34281142
http://dx.doi.org/10.3390/ijerph18137205
_version_ 1783725774873821184
author Sim, Younbo
Byeon, Myeong Seop
Kim, Keonhee
Yu, Soon Ju
Im, Jong Kwon
author_facet Sim, Younbo
Byeon, Myeong Seop
Kim, Keonhee
Yu, Soon Ju
Im, Jong Kwon
author_sort Sim, Younbo
collection PubMed
description Lake Paldang is a complex water system with both fluvial and lacustrine characteristics and the largest artificial dam lake in South Korea. In this study, the different occurrence patterns and causes of the clear-water phase (CWP) were investigated using water quality and hydrological factors at four sites in Lake Paldang. Among the environmental and other factors associated with CWP occurrence, secchi depth and turbidity exhibited significant correlations with precipitation, hydraulic retention time (HRT), and individual and relative abundance (RA) of zooplankton (Cladocera) (p < 0.01). Hence, a change in the HRT because of precipitation could alter the CWP. The Cladocera individuals and RA showed significant correlations with the water temperature, indicating that the emergence of Cladocera in spring as the water temperature rises could cause the CWP. Sensitivity assessments conducted using Bayesian models demonstrated different CWP occurrence sensitivity relationships for the river-type, lake-type, and shallow and deep sites. Turbidity, secchi depth, and zooplankton factors also showed sensitive relationships with CWP occurrence for all sites. The sensitivity to precipitation and HRT was higher in the river-type sites. The lake-type sites, with common Cladocera emergence and long HRT, favored CWP occurrence. Thus, CWP occurrence was dependent on the site characteristics and climate conditions.
format Online
Article
Text
id pubmed-8297077
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-82970772021-07-23 Influence of Zooplankton and Environmental Factors on Clear-Water Phase in Lake Paldang, South Korea Sim, Younbo Byeon, Myeong Seop Kim, Keonhee Yu, Soon Ju Im, Jong Kwon Int J Environ Res Public Health Article Lake Paldang is a complex water system with both fluvial and lacustrine characteristics and the largest artificial dam lake in South Korea. In this study, the different occurrence patterns and causes of the clear-water phase (CWP) were investigated using water quality and hydrological factors at four sites in Lake Paldang. Among the environmental and other factors associated with CWP occurrence, secchi depth and turbidity exhibited significant correlations with precipitation, hydraulic retention time (HRT), and individual and relative abundance (RA) of zooplankton (Cladocera) (p < 0.01). Hence, a change in the HRT because of precipitation could alter the CWP. The Cladocera individuals and RA showed significant correlations with the water temperature, indicating that the emergence of Cladocera in spring as the water temperature rises could cause the CWP. Sensitivity assessments conducted using Bayesian models demonstrated different CWP occurrence sensitivity relationships for the river-type, lake-type, and shallow and deep sites. Turbidity, secchi depth, and zooplankton factors also showed sensitive relationships with CWP occurrence for all sites. The sensitivity to precipitation and HRT was higher in the river-type sites. The lake-type sites, with common Cladocera emergence and long HRT, favored CWP occurrence. Thus, CWP occurrence was dependent on the site characteristics and climate conditions. MDPI 2021-07-05 /pmc/articles/PMC8297077/ /pubmed/34281142 http://dx.doi.org/10.3390/ijerph18137205 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sim, Younbo
Byeon, Myeong Seop
Kim, Keonhee
Yu, Soon Ju
Im, Jong Kwon
Influence of Zooplankton and Environmental Factors on Clear-Water Phase in Lake Paldang, South Korea
title Influence of Zooplankton and Environmental Factors on Clear-Water Phase in Lake Paldang, South Korea
title_full Influence of Zooplankton and Environmental Factors on Clear-Water Phase in Lake Paldang, South Korea
title_fullStr Influence of Zooplankton and Environmental Factors on Clear-Water Phase in Lake Paldang, South Korea
title_full_unstemmed Influence of Zooplankton and Environmental Factors on Clear-Water Phase in Lake Paldang, South Korea
title_short Influence of Zooplankton and Environmental Factors on Clear-Water Phase in Lake Paldang, South Korea
title_sort influence of zooplankton and environmental factors on clear-water phase in lake paldang, south korea
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8297077/
https://www.ncbi.nlm.nih.gov/pubmed/34281142
http://dx.doi.org/10.3390/ijerph18137205
work_keys_str_mv AT simyounbo influenceofzooplanktonandenvironmentalfactorsonclearwaterphaseinlakepaldangsouthkorea
AT byeonmyeongseop influenceofzooplanktonandenvironmentalfactorsonclearwaterphaseinlakepaldangsouthkorea
AT kimkeonhee influenceofzooplanktonandenvironmentalfactorsonclearwaterphaseinlakepaldangsouthkorea
AT yusoonju influenceofzooplanktonandenvironmentalfactorsonclearwaterphaseinlakepaldangsouthkorea
AT imjongkwon influenceofzooplanktonandenvironmentalfactorsonclearwaterphaseinlakepaldangsouthkorea