Cyanobacterial biodiversity and associated ecosystem services: introduction to the special issue

Chaurasia, Aalok Ranjan

doi:10.1007/s10531-015-0908-6

Cited by 15 publications

(11 citation statements)

References 34 publications

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“…They fix nitrogen and release oxygen by photosynthesis, accumulate phosphorus and reflect the ecological state of the environment (i.e. bioindicator) (Chaurasia, 2015;Mateo et al, 2015). But when cyanobacteria blooms occur, they are usually toxic and have severe consequences (release of toxins, organic material enrichment in sediment, negative impact on the food web and increased bacterial activity) for the entire ecosystem (Havens, 2008).…”

Section: Introductionmentioning

confidence: 99%

Geographical and temporal patterns of cyanobacterial assemblages in the Danube Delta lake complexes

et al. 2021

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Danube Delta shallow lakes experience cyanobacteria blooms that can negatively affect the aquatic ecosystem. Although there are several studies on Danube Delta cyanobacteria, little is known about their spatial-temporal patterns and the potential predictive role they can offer.We therefore analyzed the distribution of cyanobacteria in 19 lakes belonging to three lake complexes, and tested whether their seasonal dynamics are in line with the predictions of the PEG model. Furthermore, we investigated to which extent cyanobacteria diversity and abundance were related to lake hydrogeomorphological characteristics such as: surface, water level, connectivity, water retention, flood risk, transparency. Although lakes had different seasonal cyanobacterial assemblages, the biovolume and genus richness had a geographical pattern, decreasing from south-east (lakes forming the fluvial delta) towards north-west (lakes forming the maritime delta). Cyanobacteria biovolume reflected largely the PEG model peaking in summer (the fluvial delta) and autumn ( the maritime delta). Genus richness followed the same pattern. Cyanobacteria distribution was predicted by various abiotic (e.g. risk of flooding, connectivity) and biotic factors (e.g. submersed macrophytes, phytoplankton diversity, peat deposits). Our study contributes to the understanding of cyanobacteria diversity and distribution in shallow interconnected lakes by revealing the complexity of predictors for geographical and seasonal patterns.

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Section: Introductionmentioning

confidence: 99%

Geographical and temporal patterns of cyanobacterial assemblages in the Danube Delta lake complexes

et al. 2021

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“…Cyanobacteria have been able to adapt to climate changes as well as anthropogenic disturbances. These organisms exhibit the widest range of diversity of growth habitats and have developed CO 2 concentration mechanisms that adapt them to various environmental constraints (Chaurasia 2015). These rich natural resources are subjected to degradation due to global warming and pollution, thus, Antarctic regions are becoming the subject of scientific research by climatologists and biologists.…”

Section: Discussionmentioning

confidence: 99%

Biodiversity of periphytic cyanobacteria and algae assemblages in polar region: a case study of the vicinity of Arctowski Polish Antarctic Station (King George Island, Antarctica)

Zębek¹,

Napiórkowska‐Krzebietke

Świątecki

et al. 2021

Biodivers Conserv

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This study was carried out on periphytic cyanobacteria and algae assemblages of microbial mats in streams and small water bodies during the Antarctic summer of 2019 in the vicinity of Ecology Glacier (King George Island, Antarctica). The significantly diversified assemblages between the microbial mats of small water bodies and streams were observed. The higher biomass and proportion of periphytic cyanobacteria with Planktothix agardhii as dominant species were found in the streams at lower mean water temperature and higher nutrient content while diatoms generally dominated in the small water bodies (primarily Fragilaria capucina). Chlorophyta also reached a significant proportion in the total biomass of periphyton with dominant species of Prasiola crispa and Keratococcus mucicola. The growth of periphytic cyanobacteria and algae was determined mainly by type of substrate, water temperature and nutrient concentrations. The results also suggest the phenomenon of nutrient uptake by these assemblages from the waters, confirmed by the negative correlations between some species and nutrients (TN, TP, N-NH4, P-PO4). A large share of commonly occurring periphytic species and limitation of typically polar ones, suggest progressive changes in the eutrophication of Antarctic waters caused by the global climate change and increased pollution in the environment. Therefore, these areas should be subject to a special legal protection, preceded by detailed research of these ecosystems.

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“…Globally, the frequency and intensity of cyanobacterial blooms in fresh water bodies are increasing due to eutrophication caused by anthropogenic nutrient enrichment and climatic induced changes [1,2]. These consequently have a huge impact on the ecosystem [3], but they also have an impact on human activities. For example, fishing activities are negatively affected by clogging fishing-nets and drinking water treatment plants get operational problems by clogging raw water strainers and causing unpleasant odour and taste in the treated water [4].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of indicators for cyanobacterial risk in 108 temperate lakes using 23 years of environmental monitoring data

Persson

Pekar

et al. 2021

Environ Sci Eur

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Background Cyanobacterial blooms are of increasing concern for drinking water supply. In Sweden, a survey among drinking water producers showed that the sense of urgency was little. At 60% of the Swedish drinking water treatment plants, operators lacked monitoring strategies. To get a picture of the size of the problem the presence of cyanobacterial risk in 108 Swedish lakes was evaluated from 23 years of environmental monitoring data. The drivers and indicators for cyanobacterial growth were investigated by analyzing water quality in 9 lakes that have more frequent cyanobacteria bio-volume above the WHO drinking water alert level 1: 0.2 mm3L−1. Results The study shows that the most common species in those lakes are Anabaena/Dolichospermum and Aphanizomenon followed by Microcystis, Woronichinia and Planktothrix, which can produce a variety of toxins such as anatoxins, cylindrospermopsins, microcystins and saxitoxins, supported by literature study. Our results show that cyanobacterial risk in those problematic 9 lakes are mainly nutrients driven with possibly contribution of increased organic matter. By applying non-linear quantile regression with total phosphorus (TP) as an example, we demonstrated that certain drivers such as TP can be useful for cyanobacterial risk assessment and provide control measures by setting nutrients targets. We also evidenced that cyanobacterial peaks presented at low TN:TP ratio while not necessarily vice versa. We also further evaluated that chlorophyll-a and transparency might be suitable as indicators for cyanobacterial blooms in certain lakes, while for most of the lakes, their connection is low. Conclusion Nutrients are main drivers for higher cyanobacterial occurrence in the 9 lakes. We suggest TP concentrations should be investigated thoroughly to provide important knowledge which can be used to set nutrient targets to sustain safe drinking water supply and recreational services. The complexity of indicating cyanobacterial risk in a local condition was also highlighted in this study and future study is suggested. To classify different types of lake and identify their drivers and the similarities of species composition changes in those lakes will be future studied.

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Cyanobacterial biodiversity and associated ecosystem services: introduction to the special issue

Cited by 15 publications

References 34 publications

Geographical and temporal patterns of cyanobacterial assemblages in the Danube Delta lake complexes

Geographical and temporal patterns of cyanobacterial assemblages in the Danube Delta lake complexes

Biodiversity of periphytic cyanobacteria and algae assemblages in polar region: a case study of the vicinity of Arctowski Polish Antarctic Station (King George Island, Antarctica)

Evaluation of indicators for cyanobacterial risk in 108 temperate lakes using 23 years of environmental monitoring data

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