The Characteristics and Distribution of Eukaryotic Phytoplankton Community in Liaodong Bay, China

Song, Lu; Wu, Jing; Du, Jing; Li, Nan; Song, Guangjun; Wang, Kun; Sun, Meina; Wang, Peng

doi:10.1007/s12601-019-0007-9

Cited by 14 publications

(6 citation statements)

References 39 publications

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“…High variation in the copy number of the 18S rRNA gene may lead to a rapid decline in consistency between the DNA reads and the actual organism abundances ( Gong and Marchetti, 2019 ). The predominance and bias of dinoflagellates in microalgal metabarcoding have been widely reported ( Xu et al, 2017 ; Song et al, 2019 ; Liu et al, 2020 ; Cui et al, 2021 ; Wang Z. H. et al, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Metabarcoding reveals a high diversity and complex eukaryotic microalgal community in coastal waters of the northern Beibu Gulf, China

Wang,

Gu,

et al. 2024

Front. Microbiol.

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Beibu Gulf is an important semi-enclosed bay located in the northwestern South China Sea, and is famous for its high bio-productivity and rich bio-diversity. The fast development along the Beibu Gulf Economical Rim has brought pressure to the environment, and algal blooms occurred frequently in the gulf. In this study, surface water samples and micro-plankton samples (20–200 μm) were collected in the northern Beibu Gulf coast. Diversity and distribution of eukaryotic planktonic microalgae were analyzed by both metabarcoding and microscopic analyses. Metabarcoding revealed much higher diversity and species richness of microalgae than morphological observation, especially for dinoflagellates. Metabarcoding detected 144 microalgal genera in 8 phyla, while microscopy only detected 40 genera in 2 phyla. The two methods revealed different microalgal community structures. Dinoflagellates dominated in microalgal community based on metabarcoding due to their high copies of 18 s rRNA gene, and diatoms dominated under microscopy. Altogether 48 algal bloom and/or toxic species were detected in this study, 34 species by metabarcoding and 19 species by microscopy. Our result suggested a high potential risk of HABs in the Beibu Gulf. Microalgal community in the surface water samples demonstrated significantly higher OTU/species richness, alpha diversity, and abundance than those in the micro-plankton samples, although more HAB taxa were detected by microscopic observations in the micro-plankton samples. Furthermore, nano-sized taxa, such as those in chlorophytes, haptophytes, and chrysophyceans, occurred more abundantly in the surface water samples. This study provided a comprehensive morphological and molecular description of microalgal community in the northern Beibu Gulf.

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Section: Discussionmentioning

confidence: 99%

Metabarcoding reveals a high diversity and complex eukaryotic microalgal community in coastal waters of the northern Beibu Gulf, China

Wang,

Gu,

et al. 2024

Front. Microbiol.

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“…According to the overall structural characteristics of the reservoir area, and the basis of previous research methods (Wang et al, 2017;Ferrera et al, 2020;Lee et al, 2018;Song et al, 2019;Liu et al, 2020b), seven sampling sites including Songgang (SG), Tumen (TM), Heijizui (HJZ), Kuxin (KX), Dangzikou (DZK), Wulongquan (WLQ), and Qushou (QS) were set up in the Danjiangkou Reservoir (Figure 1). In June 2021, the samples at 0.5 m, 5 m, 10 m, and 20 m depth of each sampling site were collected respectively for investigating the vertical distribution patterns of the eukaryotic plankton community.…”

Section: Samples Collection and Physicochemical Factors Determinationmentioning

confidence: 99%

Effects of environmental factors on vertical distribution of the eukaryotic plankton community in early summer in Danjiangkou Reservoir, China

Mai,

He,

et al. 2023

Front. Ecol. Evol.

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IntroductionEukaryotic plankton plays crucial roles in ecosystem processes, impacting aquatic ecosystem stability. This study focuses on Danjiangkou Reservoir, a canyon lake in central China, that acts as the water source of the Mid-route of the South-to-North Water Diversion Project.MethodsIn this study, high-throughput 18S rDNA gene sequencing was employed to investigate eukaryotic plankton community at four water depths (0.5 m, 5 m, 10 m, and 20 m). The environmental factors including pH, water temperature (WT), nitrate nitrogen (NO3−-N), ammonia nitrogen (NH4+-N), total nitrogen (TN), conductivity (Cond), and dissolved oxygen (DO) in reservoir areas were measured, and their correlations with abundance and diversity of eukaryotic plankton were analyzed.ResultsThe results showed the presence of 122 genera of eukaryotic plankton from 38 phyla. Eukaryotic plankton communities were mainly composed of Eurytemora, Thermocyclops, Sinocalanus, Mesocyclops, and Cryptomonas. In particular, significant differences in the diversity of eukaryotic plankton communities were found in vertical distribution. The diversity and abundance of eukaryotic plankton communities in 7 sampling sites decreased with the increase of depth from 0.5 to 10 m, while the diversity and abundance of plankton communities increased at 20 m. RDA analysis indicated that pH, depth, WT, NH4+-N, DO, Cond, and NO3−-N could influence the vertical distribution of the eukaryotic plankton community in the Danjiangkou Reservoir. Among these eukaryotic plankton, Eurytemora, Thermocyclops, and Volvox were negatively correlated with pH and WT and positively correlated with depth.DiscussionThis study revealed a novel perspective on the distribution of the eukaryotic plankton community in Danjiangkou Reservoir, particularly in terms of vertical variation, which will be helpful to comprehensively understand ecological processes and to further ensure the water quality safety in this canyon-style reservoir.

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“…From March to October the biomass and proportional contributions of phytoplankton at Donggang and Changhai were dominated mostly by nanophytoplankton and microphytoplankton, whereas from August to September at Changhai, picophytoplankton became dominant; this might negatively affect M. yessoensis growth. In addition, nanophytoplankton and microphytoplankton dominance at two regions mainly from toxic algae, shell sh quality and health safety potential (Song et al, 2018;Villanueva and Navarro, 2016). It should be noted that we analyzed the biomass of phytoplankton size-fractions and taxa, assuming that relationships between phytoplankton volume and Chl a content are linear, and multiplied the proportional contribution of each size-fraction and taxon by total Chl a content to characterize its biomass.…”

Section: Correlations Between Environmental Variables and Phytoplankt...mentioning

confidence: 99%

Response of microalgae size-class structure to nutrients differences in northern Yellow Sea, China

Song

Liu

Song

et al. 2023

Environ Sci Pollut Res

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Marine phytoplankton size-class structure affects ecological functions and shell sh culture. We use highthroughput sequencing and size-fractioned grading techniques to identify and analyze responses of phytoplankton differences in environmental variables at Donggang, northern Yellow Sea (high inorganic nitrogen (DIN)) and Changhai (low DIN) for 2021. The main environmental variables that correlate with differences in the proportional contributions of pico-, nano-, and microphytoplankton to the total phytoplankton community are inorganic phosphorus (DIP), nitrite to inorganic nitrogen ratio (NO 2 /dissolved inorganic nitrogen (DIN)), and ammonia nitrogen to inorganic nitrogen ratio (NH 4 /DIN), respectively. DIN, which contributes most to environmental differences, mainly positively correlates with changes in picophytoplankton biomass in high DIN waters. Nitrite (NO 2 ) correlates mostly with changes in the proportional contribution of microphytoplankton in high DIN waters and nanophytoplankton in low DIN waters, and negatively correlates with changes in the biomass and proportional representation of microphytoplankton in low DIN waters. For near-shore phosphorus-limited waters, an increase in DIN may increase total microalgal biomass, but proportions of microphytoplankton may not increase; for high DIN waters, an increase in DIP may increase proportions of microphytoplankton, while for low DIN waters, an increase in DIP may preferentially increase proportions of picophytoplankton and nanophytoplankton.Picophytoplankton contributed little to the growth of two commercially cultured lter-feeding shell sh, Ruditapes philippinarum and Mizuhopecten yessoensis.

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The Characteristics and Distribution of Eukaryotic Phytoplankton Community in Liaodong Bay, China

Cited by 14 publications

References 39 publications

Metabarcoding reveals a high diversity and complex eukaryotic microalgal community in coastal waters of the northern Beibu Gulf, China

Metabarcoding reveals a high diversity and complex eukaryotic microalgal community in coastal waters of the northern Beibu Gulf, China

Effects of environmental factors on vertical distribution of the eukaryotic plankton community in early summer in Danjiangkou Reservoir, China

Response of microalgae size-class structure to nutrients differences in northern Yellow Sea, China

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