Impacts of nutrient and marine plastic debris influx on the microalgal community (phytoplankton and periphyton) in Korean temperate coastal waters: Mesocosm study

Lee, Chung Hyeon; Lim, Young Kyun; Yoon, Ji Nam; Baek, Seung Ho

doi:10.1007/s10811-023-03069-x

Cited by 2 publications

(1 citation statement)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There were six mesocosms, with two mesocosms per group. Due to the large size and handling limitations (non-uniformity within repetitions) of mesocosm experiments, numerous researchers have conducted experiments utilizing gradient conditions rather than three repetitions, and the validity of their results has been demonstrated in many publications (Schä et al, 2001;Sandaa et al, 2009;Zöllner et al, 2009;Baek et al, 2013;Park et al, 2014;Lee et al, 2023). Considering this, the duplicated gradient experiments were performed in this study.…”

Section: Design Of Mesocosm Experimentsmentioning

confidence: 99%

Use of mesocosm and field studies to assess the effects of nutrient levels on phytoplankton population dynamics in Korean coastal waters

Yoon,

Lim,

Hong

et al. 2024

Front. Mar. Sci.

Self Cite

View full text Add to dashboard Cite

We integrated data from field observations during April and March with data from a 2-week mesocosm experiment to investigate changes in phytoplankton populations in southern Korean coastal waters (KCWs) following nutrient enrichment during early spring of 2021. The mesocosm experiments used 1000 L cylindrical plastic containers that had natural seawater (control), a low nutrient (LN) treatment, or a high nutrient (HN) treatment. The field observations showed that increased freshwater runoff following spring rainfall led to elevated levels of dissolved inorganic nitrogen and silicate and a significant increase in total phytoplankton abundance. In March, nutrient enrichment from water mixing and terrestrial runoff led to dominance of cryptophyte Cryptomonas spp. In April, higher nutrient levels than March (p< 0.05) resulting from increased terrestrial runoff after rainfall and dominant species were Skeletonema spp., and Cryptomonas spp. In the mesocosm experiment, a succession from E. zodiacus initially to Chaetoceros spp. in the middle stage, and then to Cylindrotheca closterium and Pseudo-nitzschia spp. finally was observed, depending on the species-specific nutrient availability after nutrient addition. In principal component analysis, the negative correlation between C. closterium and nutrient levels supports their nutrient availability, which is an adaptation to low-nutrient conditions. The combined data from the field observations and mesocosm experiments indicated that nutrient supplementation from terrestrial runoff and tidal mixing played a crucial role in determining the dynamics of phytoplankton populations during early spring in the KCWs.

show abstract