Dynamics of Noctiluca scintillans blooms: A 20-year study in Jangmok Bay, Korea
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Title
- Dynamics of Noctiluca scintillans blooms: A 20-year study in Jangmok Bay, Korea
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Author(s)
- Choi, Seo Yeol; Jang, Pung Guk; Cha, Hyung Gon; Hyun, Bonggil; Lee, Eun Hye; Jeong, Young Seok; Shin, Kyoung Soon; Seo, Min Ho; Soh, Ho Young; Youn, Seok Hyun; Jang, Min Chul
- KIOST Author(s)
- Jang, Pung Guk(장풍국); Cha, Hyung Gon(차형곤); Hyun, Bonggil(현봉길); Shin, Kyoung Soon(신경순); Jang, Min Chul(장민철)
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Alternative Author(s)
- 장풍국; 차형곤; 현봉길; 신경순; 장민철
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Publication Year
- 2024-10
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Abstract
- This 20-year study (2001–2020) conducted in Jangmok Bay, Korea, assessed the intricate relationships between environmental factors and Noctiluca scintillans blooms. Granger causality tests and PCA analysis were used to assess the impact of sea surface temperature (SST), salinity, dissolved oxygen (DO) concentration, wind patterns, rainfall, and chlorophyll-a (Chl-a) concentration on bloom dynamics. The results revealed significant, albeit delayed, influences of these variables on bloom occurrence, with SST exhibiting a notable 2-month lag and salinity a 1-month lag in their impact. Additionally, the analysis highlighted the significant roles of phosphate, ammonium, and silicate, which influenced N. scintillans blooms with lags of 1 to 3 months. The PCA demonstrates how SST and wind speed during spring and summer, along with wind direction and salinity in winter, significantly impact N. scintillans blooms. We noted not only an increase in large-scale N. scintillans blooms but also a cyclical pattern of occurrence every 3 years. These findings underscore the synergistic effects of environmental factors, highlighting the complex interplay between SST, salinity, DO concentration, and weather conditions to influence bloom patterns. This research enhances our understanding of harmful algal blooms (HABs), emphasizing the importance of a comprehensive approach that considers multiple interconnected environmental variables for predicting and managing N. scintillans blooms. © 2024 The Authors
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ISSN
- 0048-9697
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/45789
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DOI
- 10.1016/j.scitotenv.2024.174592
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Bibliographic Citation
- Science of the Total Environment, v.947, 2024
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Publisher
- Elsevier BV
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Keywords
- Harmful algae blooms; Jangmok Bay; Long-term change; Temporal distribution; Climate change; Granger causality test
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Type
- Article
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Language
- English
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Document Type
- Article
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