Comparison in diversity of eukaryotic algae in surface sediments from different functional sea areas of Qingdao coast, the Yellow Sea, China: a metabarcoding approach

Wang, Zhaohui; Lei, Mingdan; Ji, Shuanghui; Xie, Changliang; Chen, Jiazhuo; Li, Weiguo; Jiang, Tao

doi:10.1007/s00343-021-1200-0

Cited by 3 publications

(2 citation statements)

References 76 publications

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“…Most previous marine sediment bound eukaryote research focuses on spatial variability in community composition ( Salonen et al, 2019 ; Wang et al, 2022 ; Lalzar et al, 2023 ) or the temporal variability in the same area ( Salonen et al, 2019 ). This study compared seasonal variability in community composition between two bays in close spatial distance, but with significant differences in water temperatures.…”

Section: Discussionmentioning

confidence: 99%

Baltic Sea coastal sediment-bound eukaryotes have increased year-round activities under predicted climate change related warming

Li,

Nilsson,

Seidel

et al. 2024

Front. Microbiol.

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Climate change related warming is a serious environmental problem attributed to anthropogenic activities, causing ocean water temperatures to rise in the coastal marine ecosystem since the last century. This particularly affects benthic microbial communities, which are crucial for biogeochemical cycles. While bacterial communities have received considerable scientific attention, the benthic eukaryotic community response to climate change remains relatively overlooked. In this study, sediments were sampled from a heated (average 5°C increase over the whole year for over 50 years) and a control (contemporary conditions) Baltic Sea bay during four different seasons across a year. RNA transcript counts were then used to investigate eukaryotic community changes under long-term warming. The composition of active species in the heated and control bay sediment eukaryotic communities differed, which was mainly attributed to salinity and temperature. The family level RNA transcript alpha diversity in the heated bay was higher during May but lower in November, compared with the control bay, suggesting altered seasonal activity patterns and dynamics. In addition, structures of the active eukaryotic communities varied between the two bays during the same season. Hence, this study revealed that long-term warming can change seasonality in eukaryotic diversity patterns. Relative abundances and transcript expression comparisons between bays suggested that some taxa that now have lower mRNA transcripts numbers could be favored by future warming. Furthermore, long-term warming can lead to a more active metabolism in these communities throughout the year, such as higher transcript numbers associated with diatom energy production and protein synthesis in the heated bay during winter. In all, these data can help predict how future global warming will affect the ecology and metabolism of eukaryotic community in coastal sediments.

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Section: Discussionmentioning

confidence: 99%

Baltic Sea coastal sediment-bound eukaryotes have increased year-round activities under predicted climate change related warming

Li,

Nilsson,

Seidel

et al. 2024

Front. Microbiol.

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“…Cysts of G. spinifera were recorded at all stations and ranked 4th in abundance (Figure 6). Coincidentally, large numbers of G. spinifera sequences were analyzed in our metabarcoding study using the same sediments (Wang et al, 2022). Blooms of G. spinifera occurred in Jiaozhou Bay in 2003 and 2007, respectively (Zhou et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Distribution of Dinoflagellate Cysts in Surface Sediments From the Qingdao Coast, the Yellow Sea, China: The Potential Risk of Harmful Algal Blooms

et al. 2022

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Surface sediments were collected from three sea areas of the Qingdao coast, the Yellow Sea, China, namely, the inner Jiaozhou Bay, the Laoshan coast, and the Amphioxus Reserve area in November to December 2017. Dinoflagellate cysts were observed in the sediments, focusing on the distribution of toxic and harmful species. Contents of biogenic elements were analyzed to reveal their relationships to cysts. A total of 32 cyst taxa were identified, including 23 autotrophic and 9 heterotrophic taxa. Cyst concentrations ranged from 83.3 to 346.5 cysts/g D Wt with an average of 210.7 cysts/g D Wt. Generally, cysts of autotrophic dinoflagellates dominated in sediments from the Qingdao coast with proportions of 41.05%–90.25%. There were no dominant group in cyst assemblages; cysts of Protoperidiniaceae, Suessiales, and Calciodinelloideae showed similar contributions. Cyst assemblages were quite different in the inner Jiaozhou Bay reflected by the lower species richness, diversity, and cyst concentration. Results from the redundancy analysis (RDA) demonstrated the influence of biogenic elements on cyst assemblages, which explained well why the three sea areas with different degrees of human activities showed different dinocyst storages. Notably, 17 harmful algal bloom (HAB) dinoflagellate cysts were identified in this study, including cysts of those producing toxins that may damage human health and marine animals. Some of these cysts occurred widely and dominantly in this study, such as cysts of Gonyaulax spinifera, Azadinium trinitatum, Scrippsiella acuminata, and Biecheleria halophila, suggesting the potential risk of HABs in the Qingdao coastal area.

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Metabarcoding and co-occurrence network reveal significant effects of mariculture on benthic eukaryotic microalgal community: A case study in Daya Bay of the South China Sea

Ouyang,

Chen,

Lin

et al. 2024

Marine Pollution Bulletin

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Comparison in diversity of eukaryotic algae in surface sediments from different functional sea areas of Qingdao coast, the Yellow Sea, China: a metabarcoding approach

Cited by 3 publications

References 76 publications

Baltic Sea coastal sediment-bound eukaryotes have increased year-round activities under predicted climate change related warming

Baltic Sea coastal sediment-bound eukaryotes have increased year-round activities under predicted climate change related warming

Distribution of Dinoflagellate Cysts in Surface Sediments From the Qingdao Coast, the Yellow Sea, China: The Potential Risk of Harmful Algal Blooms

Metabarcoding and co-occurrence network reveal significant effects of mariculture on benthic eukaryotic microalgal community: A case study in Daya Bay of the South China Sea

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