Plankton community dynamics during decay of a cyanobacteria bloom: a mesocosm experiment

Engström‐Öst, Jonna; Autio, Riitta; Setälä, Outi; Sopanen, Sanna; Suikkanen, Sanna

doi:10.1007/s10750-012-1247-1

Cited by 20 publications

(14 citation statements)

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“…Nevertheless, it has been shown that bacterial communities could rapidly degrade and use cyanotoxins for growth, especially when they are frequently exposed to toxins (Christoffersen et al ., ; Jones et al ., ). Toxins and lysis products could thus boost bacterial growth, resulting in the increase in the abundance of bacterivores such as ciliates, thereby stimulating the development of microzooplankton via the trophic cascade and the microbial food web (Christoffersen et al ., ; Engström‐Öst et al ., ) (Fig. ).…”

Section: Lysis Grazing and Parasitism Of Cyanobacterial Blooms: Theimentioning

confidence: 93%

“…This so‐called microbial loop (or microbial food web when relationships with biogeochemical cycles are considered) (Azam et al ., ) has been described to be a major player of the established trophic web during a cyanobacterial bloom. Engström‐Öst and colleagues () demonstrated that the trophic food web turned from autotrophic to heterotrophic after a cyanobacterial collapse, which is explained by the fact that the lysis products of cyanobacteria could be used by bacteria and sustain all the bacterial production.…”

Section: Lysis Grazing and Parasitism Of Cyanobacterial Blooms: Theimentioning

confidence: 99%

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Microbial players involved in the decline of filamentous and colonial cyanobacterial blooms with a focus on fungal parasitism

Gerphagnon

Macarthur

Latour

et al. 2015

Environmental Microbiology

111

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SummaryIn the forthcoming decades, it is widely believed that the dominance of colonial and filamentous bloomforming cyanobacteria (e.g. Microcystis, Planktothrix, Anabaena and Cylindrospermopsis) will increase in freshwater systems as a combined result of anthropogenic nutrient input into freshwater bodies and climate change. While the physicochemical parameters controlling bloom dynamics are well known, the role of biotic factors remains comparatively poorly studied. Morphology and toxicity oftenbut not always -limit the availability of cyanobacteria to filter feeding zooplankton (e.g. cladocerans). Filamentous and colonial cyanobacteria are widely regarded as trophic dead-ends mostly inedible for zooplankton, but substantial evidence shows that some grazers (e.g. copepods) can bypass this size constraint by breaking down filaments, making the bloom biomass available to other zooplankton species. A wide range of algicidal bacteria (mostly from the Alcaligenes, Flavobacterium/Cytophaga group and Pseudomonas) and viruses (Podoviridae, Siphoviridae and Myoviridae) may also contribute to bloom control, via their lytic activity underpinned by a diverse array of mechanisms. Fungal parasitism by the Chytridiomycota remains the least studied. While each of these biotic factors has traditionally been studied in isolation, emerging research consistently point to complex interwoven interactions between biotic and environmental factors.

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Section: Lysis Grazing and Parasitism Of Cyanobacterial Blooms: Theimentioning

confidence: 93%

Section: Lysis Grazing and Parasitism Of Cyanobacterial Blooms: Theimentioning

confidence: 99%

Microbial players involved in the decline of filamentous and colonial cyanobacterial blooms with a focus on fungal parasitism

Gerphagnon

Macarthur

Latour

et al. 2015

Environmental Microbiology

111

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“…The most likely reason is that the cyanobacteria biomass obviously decreased and increased in the eukaryotic periods 2 and 4, respectively. The quick shift in cyanobacterial biomass might associate with quick shift in zooplankton grazing rate on algae [10], heterotrophic bacterial abundance and composition [59, 60], toxins and dissolved organic matters release from algae [6, 61].…”

Section: Discussionmentioning

confidence: 99%

Response of the eukaryotic plankton community to the cyanobacterial biomass cycle over 6 years in two subtropical reservoirs

et al. 2019

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Although it is widely recognized that cyanobacterial blooms have substantial influence on the plankton community in general, their correlations with the whole community of eukaryotic plankton at longer time scales remain largely unknown. Here, we investigated the temporal dynamics of eukaryotic plankton communities in two subtropical reservoirs over a 6-year period (2010–2015) following one cyanobacterial biomass cycle—the cyanobacterial bloom (middle 2010), cyanobacteria decrease (late 2010–early 2011), non-bloom (2011–2014), cyanobacteria increase, and second bloom (late 2014–2015). The eukaryotic community succession that strongly correlated with this cyanobacterial biomass cycle was divided into four periods, and each period had distinct characteristics in cyanobacterial biomass and environments in both reservoirs. Integrated co-occurrence networks of eukaryotic plankton based on the whole study period revealed that the cyanobacterial biomass had remarkably high network centralities, and the eukaryotic OTUs that had stronger correlations with the cyanobacterial biomass exhibited higher centralities. The integrated networks were also modularly responded to different eukaryotic succession periods, and therefore correlated with the cyanobacterial biomass cycle. Moreover, sub-networks based on the different eukaryotic succession periods indicated that the eukaryotic co-occurrence patterns were not constant but varied largely associating with the cyanobacterial biomass. Based on these long-term observations, our results reveal that the cyanobacterial biomass cycle created distinct niches between persistent bloom, non-bloom, decrease and increase of cyanobacteria, and therefore associated with distinct eukaryotic plankton patterns. Our results have important implications for understanding how complex aquatic plankton communities respond to cyanobacterial blooms under the changing environments.

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“…The data also indicate that this lake is light-and N-limited (Tab. 1), conditions that favour N-fixing cyanobacteria over other algal groups (Reynolds et al, 2002), and imply that N is trapped in the organic matter of these cyanobacteria and only available to other organisms through grazing or when a bloom decays and bacterial growth occurs (Engström-Öst et al, 2013). Therefore, bacterial growth can be limited when N limitation occurs, even if organic C is available (Mills et al, 2008).…”

Section: Environmental Background For Ciliatesmentioning

confidence: 99%

The trophic role and impact of plankton ciliates in the microbial web structure of a tropical polymictic lake dominated by filamentous cyanobacteria

Esquivel¹,

Barani²,

Macek³

et al. 2016

J Limnol

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The recent interest in the plankton structures and dynamics in tropical and subtropical lakes has revealed important trends that set these lakes apart from temperate lakes, and one of the main differences is ); however, significant differences were observed between seasons for both variables. Nano-sized filamentous cyanobacteria were the most abundant component of the plankton, and their abundance was assessed through epifluorescence microscopy counts. The autotrophic and heterotrophic picoplankton abundance was measured through epifluorescence, and their abundance and biomass were higher at the study site relative to other shallow freshwater ecosystems. The total ciliate biomass distribution patterns were similar to those of filamentous cyanobacteria and autotrophic or heterotrophic picoplankton, although the nanociliate biomasses peaked when the picoplankton and filamentous cyanobacteria were least abundant. The consequences of this increased importance of ciliates on the structure of the plankton at Lake Catemaco will be discussed along with the probable causes.

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Plankton community dynamics during decay of a cyanobacteria bloom: a mesocosm experiment

Cited by 20 publications

References 50 publications

Microbial players involved in the decline of filamentous and colonial cyanobacterial blooms with a focus on fungal parasitism

Microbial players involved in the decline of filamentous and colonial cyanobacterial blooms with a focus on fungal parasitism

Response of the eukaryotic plankton community to the cyanobacterial biomass cycle over 6 years in two subtropical reservoirs

The trophic role and impact of plankton ciliates in the microbial web structure of a tropical polymictic lake dominated by filamentous cyanobacteria

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