Cyanobacterial blooms in China: diversity, distribution, and cyanotoxins

Huo, Da; Gan, Nanqin; Geng, Ruozhen; Cao, Qi; Song, Lirong; Yu, Ge; Li, Renhui

doi:10.1016/j.hal.2021.102106

Cited by 94 publications

(35 citation statements)

References 127 publications

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“…5a). This may be due to the higher number of species with highly competitive abilities for nitrogen that contribute to total biomass and resource use (Dutkiewicz et al 2014), such as N‐fixing cyanobacteria, especially Dolichospermum spp., in Lake Taihu (Huo et al 2020). Our results are consistent with a 43‐yr field study in the Baltic Sea, which reports a positive relationship of RUE N with diazotrophic cyanobacteria, such as Aphanizomenon spp.…”

Section: Discussionmentioning

confidence: 99%

Spatiotemporal dependency of resource use efficiency on phytoplankton diversity in Lake Taihu

Chaoxuan

Zhu

et al. 2022

Limnology & Oceanography

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The dependency of resource use efficiency (RUE) on phytoplankton diversity is key for understanding aquatic ecosystem responses to eutrophication and climate change. Here, we studied RUE of nitrogen (RUE N ), phosphorous (RUE P ), or silicate (RUE Si ) and the associated abiotic and biotic explanatory variables in 3,016 samples collected from 30 sites in Lake Taihu during 2005-2017, covering cyanobacteria-and macrophyte-dominated regions. We further examined spatiotemporal dependencies of RUE on phytoplankton taxonomic and functional diversity and their underlying drivers. The annual mean RUE si of each site exhibited an overall increasing temporal trend, while that of RUE N and RUE P displayed U-shaped patterns over the study period. RUE was affected by nutrients and water temperature, and also was related to phytoplankton diversity in terms of Shannon diversity and functional dispersion diversity. Interestingly, RUE showed negative spatial dependencies on phytoplankton diversity. These negative spatial dependencies had decreasing temporal trends for RUE N and RUE Si , while a hump-shaped pattern for RUE P . The dependencies were generally related to spatial environmental mean of nutrients, such as nitrate and total phosphorus. Furthermore, RUE showed negative temporal dependencies on phytoplankton diversity mainly in the cyanobacteria-dominated region, while it was occasionally positive in the macrophyte-dominated region. These temporal dependencies were driven primarily by temporal environmental stability of nutrients, such as dissolved total nitrogen. Collectively, the direction and strength of spatiotemporal dependencies of RUE on phytoplankton diversity were influenced by nutrient status and stability. These findings can be considered in future environmental management plans for long-term sustainability of ecosystem functioning under global climate change.

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Section: Discussionmentioning

confidence: 99%

Spatiotemporal dependency of resource use efficiency on phytoplankton diversity in Lake Taihu

Chaoxuan

Zhu

et al. 2022

Limnology & Oceanography

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“…These cyanobacteria are referred to as invasive or exotic cyanobacteria. Invasive nostocalean cyanobacteria (INC) include genera Cylindrospermopsis , Sphaerospermopsis , Cuspidothrix , Raphidiopsis , and Chrysosporum [ 11 , 12 , 13 , 14 , 15 , 16 ]. Species of these genera reportedly produce toxins such as saxitoxin, cylindrospermopsin, and anatoxin-a [ 10 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Appearance and Toxin Production Potential of Invasive Nostocalean Cyanobacteria Using Quantitative Gene Analysis in Nakdong River, Korea

Park

Kim

2022

Toxins

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Invasive nostocalean cyanobacteria (INC) were first reported in tropical regions and are now globally spreading rapidly due to climate change, appearing in temperate regions. INC require continuous monitoring for water resource management because of their high toxin production potential. However, it is difficult to analyze INC under a microscope because of their morphological similarity to nostocalean cyanobacteria such as the genus Aphanizomenon. This study calculates the gene copy number per cell for each target gene through quantitative gene analysis on the basis of genus-specific primers of genera Cylindrospermopsis, Sphaerospermopsis, and Cuspidothrix, and the toxin primers of anatoxin-a, saxitoxin, and cylindrospermopsin. In addition, quantitative gene analysis was performed at eight sites in the Nakdong River to assess the appearance of INC and their toxin production potential. Genera Cylindrospermopsis and Sphaerospermopsis did not exceed 100 cells mL−1 at the maximum, with a low likelihood of related toxin occurrence. The genus Cuspidothrix showed the highest cell density (1759 cells mL−1) among the INC. Nakdong River has potential for the occurrence of anatoxin-a through biosynthesis by genus Cuspidothrix because the appearance of this genus coincided with that of the anatoxin-a synthesis gene (anaF) and the detection of the toxin by ELISA.

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“…Lake Taihu is currently the lake receiving the most attention in the field of limnological research [59]. Cyanobacterial blooms in lakes in China are dominated by Microcystis [60], which is why, as shown in Figure 4b, cyanotoxin-related research in China focuses heavily on Microcystis. Although this concentration can promote research on cyanotoxins, for a country with serious eutrophication such as China, the problems created by cyanotoxins in many other lakes are also worthy of attention.…”

Section: Discussionmentioning

confidence: 99%

Research Characteristics on Cyanotoxins in Inland Water: Insights from Bibliometrics

Wang

Zhang

et al. 2022

Water

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Eutrophication is a long-standing ecological and environmental problem, and the severity of harmful algal blooms continues to increase, causing large economic losses globally. One of the most important hazards created by harmful algal blooms is the production of cyanotoxins. This study aimed to analyze the characteristics and development trends of cyanotoxin research through bibliometric analysis. A total of 3265 publications from 1990 to 2020 on cyanotoxins were retrieved from the Science Citation Index (SCI) Expanded database, Web of Science. Over the past 30 years, most research has been concentrated in China (21.4%) and the USA (21.3%). Throughout the study period, microcystin was the focus of the research, accounting for 86% of the total number of publications. A word frequency analysis revealed that as people became more aware of drinking water safety and the construction of large-scale water conservation facilities, “reservoirs” and “rivers” became hot words for researchers, while “lakes” have always been important research objects. Nonmetric multidimensional scaling (NMDS) analysis of studies from the five countries with the largest numbers of publications showed that Chinese researchers typically associate eutrophication with Microcystis, while research subjects in other countries are more extensive and balanced. The development of cyanotoxin research around the world is not even, and we need to push for more research on major lakes that are outside of North America, Europe and China.

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Cyanobacterial blooms in China: diversity, distribution, and cyanotoxins

Cited by 94 publications

References 127 publications

Spatiotemporal dependency of resource use efficiency on phytoplankton diversity in Lake Taihu

Spatiotemporal dependency of resource use efficiency on phytoplankton diversity in Lake Taihu

Assessment of the Appearance and Toxin Production Potential of Invasive Nostocalean Cyanobacteria Using Quantitative Gene Analysis in Nakdong River, Korea

Research Characteristics on Cyanotoxins in Inland Water: Insights from Bibliometrics

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