Nitrogen dynamics and microbial food web structure during a summer cyanobacterial bloom in a subtropical, shallow, well-mixed, eutrophic lake (Lake Taihu, China)

McCarthy, Mark J.; Lavrentyev, Peter J.; Yang, Liuyan; Zhang, Lu; Chen, Yuwei; Qin, Boqiang; Gardner, Wayne S.

doi:10.1007/978-1-4020-6158-5_22

Cited by 60 publications

(91 citation statements)

References 35 publications

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“…Periods of high cyanobacterial biovolume are associated with elevated rates of denitrification (McCarthy et al, 2007) and carbon sequestration (Becker et al, 2011;Sandrini et al, 2014), applying additional perturbations to the water column that in turn contribute to already highly variable systems . Numerous studies have highlighted the diversity of heterotrophic groups that occur within microbial communities associated with freshwater bloomforming cyanobacteria species (Eiler and Bertilsson, 2004;Wu et al, 2007;Berg et al, 2008;Cheng et al, 2011;Dziallas and Grossart, 2011;Grossart et al, 2011;Wilhelm et al, 2011;Steffen et al, 2012;Woodhouse et al, 2012;Cai et al, 2013;Xing et al, 2013;Bagatini et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Microbial communities reflect temporal changes in cyanobacterial composition in a shallow ephemeral freshwater lake

et al. 2015

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The frequency of freshwater cyanobacterial blooms is at risk of increasing as a consequence of climate change and eutrophication of waterways. It is increasingly apparent that abiotic data are insufficient to explain variability within the cyanobacterial community, with biotic factors such as heterotrophic bacterioplankton, viruses and protists emerging as critical drivers. During the Australian summer of 2012-2013, a bloom that occurred in a shallow ephemeral lake over a 6-month period was comprised of 22 distinct cyanobacteria, including Microcystis, Dolichospermum, Oscillatoria and Sphaerospermopsis. Cyanobacterial cell densities, bacterial community composition and abiotic parameters were assessed over this period. Alpha-diversity indices and multivariate analysis were successful at differentiating three distinct bloom phases and the contribution of abiotic parameters to each. Network analysis, assessing correlations between biotic and abiotic variables, reproduced these phases and assessed the relative importance of both abiotic and biotic factors. Variables possessing elevated betweeness centrality included temperature, sodium and operational taxonomic units belonging to the phyla Verrucomicrobia, Planctomyces, Bacteroidetes and Actinobacteria. Species-specific associations between cyanobacteria and bacterioplankton, including the free-living Actinobacteria acI, Bacteroidetes, Betaproteobacteria and Verrucomicrobia, were also identified. We concluded that changes in the abundance and nature of freshwater cyanobacteria are associated with changes in the diversity and composition of lake bacterioplankton. Given this, an increase in the frequency of cyanobacteria blooms has the potential to alter nutrient cycling and contribute to long-term functional perturbation of freshwater systems.

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Section: Introductionmentioning

confidence: 99%

Microbial communities reflect temporal changes in cyanobacterial composition in a shallow ephemeral freshwater lake

et al. 2015

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“…These blooms could persist for up to 10 months and cover the majority of the lake's surface (Wan et al, 2008). Reasons for the persistence of cyanobacterial blooms and mechanisms of nutrient cycling at the ecosystem level in shallow eutrophic lakes have fascinated many ecologists (McCarthy et al, 2007;Paerl et al, 2011). Recent research has revealed the importance of internal nutrient dynamics (McDonald et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Modelling ecosystem structure and trophic interactions in a typical cyanobacterial bloom-dominated shallow Lake Dianchi, China

Shan

Wang

et al. 2014

Ecological Modelling

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“…Dense cyanobacterial blooms, mainly composed of Microcystis and some filamentous cyanobacteria such as Dolichospermum, Aphanizomenon and Planktothrix, annually occurred in a large area of the lake. Aphanizomenon and Planktothrix were found to be restricted at the north of the Lake Taihu, and Dolichospermum was observed as the second dominated cyanobacterial group, following Microcystis McCarthy et al, 2007). Otten et al (2012) predicted that reducing eutrophication in Lake Taihu could lead to the shift from Microcystis dominance to Dolichospermum dominance.…”

Section: Introductionmentioning

confidence: 99%

Genetic analysis on Dolichospermum (Cyanobacteria; sensu Anabaena) populations based on the culture-independent clone libraries revealed the dominant genotypes existing in Lake Taihu, China

Liu

Xiao

et al. 2014

Harmful Algae

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Nitrogen dynamics and microbial food web structure during a summer cyanobacterial bloom in a subtropical, shallow, well-mixed, eutrophic lake (Lake Taihu, China)

Cited by 60 publications

References 35 publications

Microbial communities reflect temporal changes in cyanobacterial composition in a shallow ephemeral freshwater lake

Microbial communities reflect temporal changes in cyanobacterial composition in a shallow ephemeral freshwater lake

Modelling ecosystem structure and trophic interactions in a typical cyanobacterial bloom-dominated shallow Lake Dianchi, China

Genetic analysis on Dolichospermum (Cyanobacteria; sensu Anabaena) populations based on the culture-independent clone libraries revealed the dominant genotypes existing in Lake Taihu, China

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