Heterogeneous spatial and temporal cyanobacterial distributions in Missisquoi Bay, Lake Champlain: An analysis of a 9 year data set

Bowling, Lee C.; Blais, Sylvie; Sinotte, Marc

doi:10.1016/j.jglr.2014.12.012

Cited by 20 publications

(11 citation statements)

References 53 publications

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“…This is similar to lakes in Alberta (Zurawell et al 2005). In the western basin of Lake Erie, and in most years in Bay Massisquoi, Lake Champlain (Quebec), microcystins are due to large blooms of Microcystis aeruginosa (Bowling et al 2015). However, some taxa not known as producers can sometimes show significant correlations with microcystins in field studies; Aphanizomenon may well include microcystin producers (LeBlanc Renaud 2009;Chen et al 2007;Šulčius et al 2015) along with species of Microcystis not normally associated with toxins (Monchamp et al 2014).…”

Section: Cyanotoxinssupporting

confidence: 64%

“…The specific conditions leading to surface accumulations are highly variable and dependent on short-term changes in weather, including high solar radiation and decreases in wind speed. These conditions at the within-lake scale have been challenging to define (Bowling et al 2015, but see Zhang et al 2012. Surface scums per se are thus as difficult to predict as the weather (Soranno 1997), yet they pose the greatest risk to human and wildlife health, concentrating potentially toxic biomass near shorelines where drinking water intakes and animals occur.…”

Section: Bloom-forming Algae and Cyanobacteriamentioning

confidence: 99%

See 1 more Smart Citation

Blooming algae: a Canadian perspective on the rise of toxic cyanobacteria

Pick

2016

Can. J. Fish. Aquat. Sci.

173

111

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Algal bloom reports are on the rise across Canada. While eutrophication is the main driver, other stressors of aquatic ecosystems, specifically climate change and food web alterations from the spread of invasive species and overfishing, are compounding factors acting in concert or independently. Current models can predict the average algal and cyanobacterial biomass concentrations across temperate lakes as a function of nutrients, but models to specifically predict harmful algal composition and toxicity are lacking. At the within-lake scale, where management occurs, strong year to year variations in cyanobacterial blooms remain challenging to explain, let alone predict. The most common cyanotoxins, the hepatotoxic microcystins, are chemically diverse with some variants more toxic than others and with greater propensity for persistence and bioaccumulation. These differences have been largely overlooked, as current guidelines have been based on microcystin-LR, considered the most common variant. Microcystin-LA is also encountered in Canadian waters and appears to exhibit greater persistence and bioaccumulation. With cyanobacterial blooms most likely to increase across the country, including the north, guidelines and policies for cyanotoxins in drinking and recreational waters as well as fish will need to be developed for the protection of ecosystem and human health. Ultimately, control of eutrophication is the most important option for managing toxic cyanobacterial blooms; nitrogen and phosphorus need to be considered as environmental contaminants, as both play a role in controlling the dominance of toxigenic cyanobacteria.Résumé : Les signalements de fleurs d'eau sont en hausse au Canada. Si l'eutrophisation en est la principale cause, d'autres facteurs de stress pour les écosystèmes aquatiques, plus précisément les changements climatiques et les modifications des réseaux trophiques découlant de la propagation d'espèces envahissantes et de la surpêche, agissent de concert avec cette dernière ou de manière indépendante. Les modèles actuels peuvent prédire les concentrations moyennes de biomasse d'algues et de cyanobactéries dans les lacs tempérés en fonction des nutriments, mais des modèles permettant de prédire la composition et la toxicité des algues nuisibles en particulier manquent toujours. À l'échelle d'un lac faisant l'objet d'une gestion, il est difficile d'expliquer et encore plus difficile de prédire les fortes variations interannuelles des proliférations de cyanobactéries observées. Les cyanotoxines les plus répandues, les microcystines hépatotoxiques, sont variées sur le plan chimique, certaines variantes étant plus toxiques que d'autres et plus susceptibles de persister et de se bioaccumuler. Ces différences ont été largement négligées, les directives actuelles étant basées sur la microcystine-LR, considérée comme la variante la plus répandue. La microcystine-LA est également présente dans les eaux canadiennes et semble caractérisée par une persistance et une bioaccumulation plus grandes. Co...

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Section: Cyanotoxinssupporting

confidence: 64%

Section: Bloom-forming Algae and Cyanobacteriamentioning

confidence: 99%

Blooming algae: a Canadian perspective on the rise of toxic cyanobacteria

Pick

2016

Can. J. Fish. Aquat. Sci.

173

111

View full text Add to dashboard Cite

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“…First, only one attempt has been done to estimate the global cyanobacterial biomass (Garcia-Pichel et al, 2003). This study does not account for the increase in blooms of toxic and non-toxic cyanobacteria in freshwater systems (Bowling, Blais, & Sinotte, 2015; Glibert, Maranger, Sobota, & Bouwman, 2014; Huisman et al, 2018; Paerl & Huisman, 2008; Visser et al, 2016), nor for less monitored cyanobacterial environments such under the ice-cover of frozen lakes (Bižić-Ionescu, Amann, & Grossart, 2014). Recent evaluations of Prochlorococcus (Lange et al, 2018) suggest a global biomass larger by 33 % than estimated in 2003 by Garcia-Pichel et al .…”

Section: Resultsmentioning

confidence: 99%

Widespread methane formation byCyanobacteriain aquatic and terrestrial ecosystems

Bižić-Ionescu

Klintzsch

Ionescu

et al. 2018

Preprint

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AbstractEvidence is accumulating to challenge the paradigm that biogenic methanogenesis, traditionally considered a strictly anerobic process, is exclusive to Archaea. Here we demonstrate that Cyanobacteria living in marine, freshwater and terrestrial environments produce methane at substantial rates under light and dark oxic and anoxic conditions, forming a link between light driven primary productivity and methane production in globally relevant group of phototrophs. Biogenic methane production was enhanced during oxygenic photosynthesis and directly attributed to the cyanobacteria by applying stable isotope labelling techniques. We suggest that formation of methane by Cyanobacteria may contribute to methane accumulation in oxygen-saturated surface waters of marine and freshwater ecosystems. Moreover, in these environments, cyanobacterial blooms already do, and might further occur more frequently during future global warming and thus have a direct feedback on climate change. We further highlight that cyanobacterial methane production not only affects recent and future global methane budgets, but also has implications for inferences on Earth’s methane budget for the last 3.5 billion years, when this phylum is thought to have first evolved.

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“…Furthermore, the composition of MCs in site 3 with dropping addition differs from the composition at the other two sites (1 and 2) ( Fig 5A). This might be attributed to the possible changes in strain composition or heterogeneity in the initial cyanobacterial composition in the field [61,62]. Besides MC composition, the results of the algal growth test (end-biomass, -composition) of site 3 were different from site 1 and 2.…”

Section: Microcystins (Mc) Production and Synthesismentioning

confidence: 93%

Effects of guanotrophication and warming on the abundance of green algae, cyanobacteria and microcystins in Lake Lesser Prespa, Greece

et al. 2020

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Lake Lesser Prespa in Greece is a vital breeding habitat for the Dalmatian and Great White Pelican and a shelter for numerous rare and endemic species. However, eutrophication processes are distressing the lake system and the outbreaks of cyanobacterial blooms during the warm months may pose a threat to aquatic organisms due to the presence of microcystins (MCs). In this study we hypothesize that nutrients (eutrophication), nutrient-rich pelican droppings (guanotrophication) and warming (climate change) can affect the algal growth and MCs production in the water layer of Lake Lesser Prespa. Seston collected from three lake sites was incubated at ambient (20˚C) and high (30˚C) temperature with or without the addition of nutrients (nitrogen (N), phosphorus (P)), or pelican droppings. Results showed increased chlorophyll-a at higher temperature (30˚C). N addition yielded higher chlorophylla levels than the non-treated water or when only P was added. The addition of both N and P as well as the addition of pelican dropping resulted in the highest chlorophyll-a at both temperatures. Notably, in the dropping-treatments, cyanobacteria and MCs were promoted while changes were evoked in the relative contribution of toxic MC-variants. Guanotrophication may thus influence the cyanobacterial dynamics and most likely their toxicity profile at Lesser Prespa. OPEN ACCESS Citation: Maliaka V, Verstijnen YJM, Faassen EJ, Smolders AJP, Lürling M (2020) Effects of guanotrophication and warming on the abundance of green algae, cyanobacteria and microcystins in Lake Lesser Prespa, Greece. PLoS ONE 15(3): e0229148. https://doi.org/10.

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Heterogeneous spatial and temporal cyanobacterial distributions in Missisquoi Bay, Lake Champlain: An analysis of a 9 year data set

Cited by 20 publications

References 53 publications

Blooming algae: a Canadian perspective on the rise of toxic cyanobacteria

Blooming algae: a Canadian perspective on the rise of toxic cyanobacteria

Widespread methane formation byCyanobacteriain aquatic and terrestrial ecosystems

Effects of guanotrophication and warming on the abundance of green algae, cyanobacteria and microcystins in Lake Lesser Prespa, Greece

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