Mechanisms of high-frequency dinoflagellate blooms of Scrippsiella trochoidea in Daya Bay, South China Sea

Tian, Yuan; Hu, Shineng; Lin, Xianzhi; Huang, Hui; Song, Xingyu; Yan, Yan; Xie, Xuedong; Li, Tao; Liu, Sheng

doi:10.1007/s00343-020-9082-0

Cited by 12 publications

(7 citation statements)

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“…Scrippsiella acuminata is a cosmopolitan dinoflagellate species in coastal waters ( Wang et al, 2007 ). Blooms of this species were reported in sea areas worldwide, and sometimes occurred successively with diatom blooms ( Wang et al, 2007 ; Zinssmeister et al, 2011 ; Tian et al, 2021 ). S. acuminata easily forms resting cysts in both natural sea waters and laboratory conditions, and cysts play an important role in its recurrent blooms ( Wang et al, 2007 ).…”

Section: Discussionmentioning

confidence: 99%

Metabarcoding of harmful algal bloom species in sediments from four coastal areas of the southeast China

Wang

Peng²,

Xie³

et al. 2022

Front. Microbiol.

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In the past three decades, harmful algal blooms (HAB) have become more frequent and widespread in southeast Chinese sea areas. Resting stages are regarded as the “seed bank” of algal blooms, and play an important role in initiating HABs. The distribution of resting stages in sediments especially those of HAB species can make good predictions about the potential risk of future blooms, however with limited reports. In this study, surface sediment samples were collected in the four sea areas along the southeast Chinese coasts, including Dafeng Port (DF) in the southern Yellow Sea, Xiangshan Bay (XS), Funing Bay (FN), and Dongshan Bay (DS) in the East China Sea. Diversity and community structure of eukaryotic microalgae in surface sediments were assessed by metabarcoding V4 region of the 18S rDNA, focusing on the distribution of HAB species. Biogenic elements including total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), biogenic silicon (BSi), and moisture content (MC) were analyzed. A total of 454 eukaryotic algal OTUs were detected, which belonged to 31 classes of 9 phyla. Altogether 149 algal species were detected in this study, and 59 taxa have been reported to form resting stages. Eukaryotic algal community was similar in XS, FN and DS of the East China Sea, which were predominated by dinoflagellates. However, algal community was different in DF of the Yellow Sea, and characterized by the dominance of chrysophytes and low OTU richness. The distribution of most abundant HAB species showed positive correlations with TN, BSi, and TOC, suggesting that eutrophication and consequent increase in diatom productivity may have a significant influence on the distribution of HAB species and facilitate the occurrence of HABs. Furthermore, HAB species occurred more abundantly and widely in FN. Our results suggest high potential risks of HABs in the southeast Chinese coast especially in Funing Bay.

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Section: Discussionmentioning

confidence: 99%

Metabarcoding of harmful algal bloom species in sediments from four coastal areas of the southeast China

Wang

Peng²,

Xie³

et al. 2022

Front. Microbiol.

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“…Therefore, the frequent occurrence of this kind of harmful algal species in the outlet area is likely due to the rapid growth caused by increased temperatures. In addition, other harmful algae species, such as Chaetoceros curvisetus and Skeletonema costatum, showed relatively higher abundance in transect I, and the stimulation of warm seawaters may exacerbate the blooms of algal species in optimal hydrodynamic conditions (Tian et al, 2021).…”

Section: Effects Of Thermal Discharge On Phytoplankton Community Stru...mentioning

confidence: 99%

“…In this study, a bloom of S. accuminata occurred in the afternoon at station I3 (cell density > 10 6 cells L -1 ; the temperature > 33°C), but in the morning, S. accuminata was not a dominant species at I3. In recent years, S. trochoidea was one of the species forming high-frequency dinoflagellate blooms in Daya Bay, especially in summer (Li et al, 2011;Tian et al, 2021). S. accuminata was found to be more adaptive to high temperatures and still able to grow at >30°C (Xu et al, 2004).…”

Section: Effects Of Thermal Discharge On Phytoplankton Community Stru...mentioning

confidence: 99%

“…Increased temperatures in the cold season accelerated the cell division rate of phytoplankton, increasing its abundance, while in the warm season it was the opposite (Xu et al, 2021). Furthermore, increased temperatures stimulated faster growth of harmful algae species, and accelerated algal blooms near the nuclear power station (Tian et al, 2021). In natural conditions, higher temperatures and enhanced stratification led to the reduction of nutrient concentration and increased the sedimentation rate of medium-sized phytoplankton, leading to an increased biomass of smaller-sized phytoplankton.…”

Section: Introductionmentioning

confidence: 99%

“…In the drainage area of the nuclear power plants, the analysis of continuous observation data for nearly 20 years showed that the average temperature of the surface layer in summer rose from 27.8°C in 1982 to 34.8°C in 2005, and the phytoplankton community structure showed a trend of transformation from diatom dominance to dinoflagellate dominance (Li et al, 2011), resulting in a trend of miniaturization (Hao and Tang, 2010). Furthermore, the frequency of harmful algal blooms is significantly positively correlated with the rise in water temperature (Yu et al, 2007;Tian et al, 2021), and the outbreaks of other organisms that could influence the nuclear power plant operation also increased (Liu et al, 2022). Most of the recent studies on the effect of thermal discharge on phytoplankton have focused on the changes in community structure; however, the physiological response of phytoplankton under thermal stress in the outlet regions is rarely reported.…”

Section: Introductionmentioning

confidence: 99%

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Short-term responses of phytoplankton size-fractionated structure and photosynthetic physiology to thermal effluent in a subtropical coastal bay

Zhang

Liu

et al. 2023

Front. Mar. Sci.

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Elevated water temperature caused by the thermal discharge from power plants can exert multiple ecological impacts on the phytoplankton community in coastal ecosystems. Most recent studies have focused on the reshaping effects on the community structure; however, the short-term response of phytoplankton physiology to thermal discharge remains unclear. This study conducted research on the scope of thermal discharge from the nuclear power plant and the size-fractionated phytoplankton structure combined with photosynthetic physiology in Daya Bay, China. The thermal discharge significantly affected the surface temperature in the outlet regions, and the thermal plume mainly diffused along the northeast coast of the outfall site, resulting in a significant difference in the surface temperature between the inlet and outlet transects (p<0.05). Elevated surface temperatures decreased the total chlorophyll a concentrations by 33.19% at the outlet regions, with pico-phytoplankton decreasing the most. Chlorophyll a concentrations were higher at sites further away from the outlets, indicating that elevated water temperature might stimulate the rapid growth of phytoplankton, especially nano-phytoplankton which replaced pico-phytoplankton as the dominant group at stations away from the outlets. Significant negative correlations were observed between the photochemical quantum yield (Fv/Fm) and temperature (p<0.05), and the relative electron transport rate (rETR) and temperature (p<0.05). Phytoplankton showed a normal photosynthetic physiological state at most sites with a surface temperature<33°C but was severely affected at the outlet site with a 5°C rise, decreasing from ~0.5 on the inlet transect to 0.07. During the diurnal survey, the high temperatures near the outlet at midday had a compensatory effect on phytoplankton’s light suppression. The results indicated that the physiological state of phytoplankton was clearly influenced by the thermal discharge with diurnal variation, and different size-fractionated phytoplankton groups exhibited heterogeneous responses. The findings may provide further insights into the ecological impacts of thermal discharges as well as global warming in subtropical regions.

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Phytoplankton community and HAB species in the South China Sea detected by morphological and metabarcoding approaches

Wang

Liu²,

Tang³

et al. 2022

Harmful Algae

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Mechanisms of high-frequency dinoflagellate blooms of Scrippsiella trochoidea in Daya Bay, South China Sea

Cited by 12 publications

References 50 publications

Metabarcoding of harmful algal bloom species in sediments from four coastal areas of the southeast China

Metabarcoding of harmful algal bloom species in sediments from four coastal areas of the southeast China

Short-term responses of phytoplankton size-fractionated structure and photosynthetic physiology to thermal effluent in a subtropical coastal bay

Phytoplankton community and HAB species in the South China Sea detected by morphological and metabarcoding approaches

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