Ecological meta-analysis of bloom-forming planktonic Cyanobacteria in Argentina

O’Farrell, Inés; Motta, Carolina da; Forastier, Marina E.; Polla, Wanda; Otaño, Silvia Haydeé; Meichtry, Norma Cristina; Devercelli, Melina; Lombardo, Rubén J.

doi:10.1016/j.hal.2019.01.004

Cited by 32 publications

(19 citation statements)

References 37 publications

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“…In a more similar context, (O'Farrell et al, 2019) obtained accuracy values comparable to ours while trying to classify Cyanobacteria into different ecological strategies. Additionally, MLR models were more accurate in predicting the presence than the absence of dominance, which contradicts results from the above-mentioned study (O'Farrell et al, 2019). This might be due to the selected variables that, in our case, were chosen for their expected influence on environmental characteristics within the waterbodies.…”

Section: Drivers Of Dominance In Phytoplankton Communities From the Psupporting

confidence: 65%

“…This approach has been compared with RF for classifying soil types and exhibited either higher (Bernhardt-Barry et al, 2018) or lower performances (Camera et al, 2017). In a more similar context, (O'Farrell et al, 2019) obtained accuracy values comparable to ours while trying to classify Cyanobacteria into different ecological strategies. Additionally, MLR models were more accurate in predicting the presence than the absence of dominance, which contradicts results from the above-mentioned study (O'Farrell et al, 2019).…”

Section: Drivers Of Dominance In Phytoplankton Communities From the Psupporting

confidence: 51%

“…dominance in phytoplankton communities are still relatively scarce (Almanza et al, 2018) or were mostly focused on Cyanobacteria (Beaver et al, 2018;Marion et al, 2017;O'Farrell et al, 2019) and sometimes on only one or two species (Bonilla et al, 2012;Marmen et al, 2016). Moreover, there is no comparison of the consequence of dominance by various organisms on the structure and functioning of phytoplankton communities.…”

Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 99%

“…confusion matrices). The predictor variables that contributed to the classification success were subsequently identified using likelihood ratio Chi-square test (O'Farrell et al, 2019;Venables and Ripley, 2002).…”

Section: Identification Of the Drivers Of Dominance In Phytoplankton mentioning

confidence: 99%

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Drivers and ecological consequences of dominance in periurban phytoplankton communities using networks approaches

et al. 2019

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Drivers Of Dominance In Phytoplankton Communities From the Psupporting

confidence: 65%

Section: Drivers Of Dominance In Phytoplankton Communities From the Psupporting

confidence: 51%

Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 99%

Section: Identification Of the Drivers Of Dominance In Phytoplankton mentioning

confidence: 99%

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Drivers and ecological consequences of dominance in periurban phytoplankton communities using networks approaches

et al. 2019

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“…At mid-high latitudes, this process seems to occur necessarily when significant anthropogenic inputs of nutrients enter the reservoirs (McCartney et al, 2000). Moreover, the development of cyanobacterial algal blooms may be promoted in eutrophic conditions, especially in dry summers and with high water retention times (Lampert and Sommer, 2007;Rangel et al, 2012;O'Farrell et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Spatial variation of picoplankton communities along a cascade reservoir system in Patagonia, Argentina

Bernal

García

et al. 2021

J Limnol

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In this study we explored how picoplankton community structure and diversity varied along three cascade oligo-mesotrophic reservoirs of the Limay River (Patagonia, Argentina): Alicura, Piedra del Águila and Ramos Mexía. We analyzed the spatial changes, covering lotic and lentic stretches along a gradient of 262 km from Andes to steppe, and we also sampled the main affluent of the Limay River (Collon Cura). In all sampling sites the main limnological variables were measured, and the picoplankton abundance (autotrophic and heterotrophic) was analyzed by flow cytometry. The bacterial biodiversity was assessed using high throughput sequencing Illumina MiSeq. We expected an increase in the trophic state along this series of cascade reservoirs, which would determine spatial differences in the structure of the picoplankton communities. We also hypothesized that the lotic and lentic conditions along the system would influence the bacterial composition. The results showed a slight increase in trophic state together with an increase in overall picoplankton abundance downstream, towards Ramos Mexía Reservoir. Picocyanobacteria were represented by phycoerythrin-rich cells all along the system, in accordance to the pattern described for oligotrophic aquatic ecosystems. Multivariate analyses based on bacterial OTU composition and environmental variables showed a spatial ordination of sites following the trend of increasing trophic state downstream. Molecular analyses of bacterial OTU diversity also showed an increase in richness and a decrease in evenness at the lotic stretches, and the opposite pattern in the reservoirs, suggesting that water retention time may play a role in structuring the community composition.

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Phytoplankton functional responses induced by extreme hydrological events in a tropical reservoir

et al. 2023

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Climate change is affecting the global hydrological cycle, causing drastic changes in precipitation patterns. Extreme climatic events are becoming more frequent and intense than in the past, leading to water-level fluctuations and affecting aquatic ecosystems. Semiarid regions are very susceptible to changing climate. We analyzed a 10 years dataset from a tropical semiarid reservoir during extreme hydrological events (heavy rains and prolonged drought), and evaluated phytoplankton functional responses to environmental conditions. We found, as hypothesized, that phytoplankton functional structure change in a temporal scale due to water–volume fluctuation induced by the rainfall pattern. Depth and inorganic material acted as environmental filters selecting phytoplankton groups. High water level seems to improve water quality and low water level worsen it. Colonial and filamentous cyanobacteria dominate the wet period; however, it may have a critical threshold during severe periods of drought, which will lead to dominance of groups well adapted to low light conditions and with mixotrophic metabolism. Phytoplankton functional approaches can simplify phytoplankton identification and reflect better the environmental conditions than the taxonomic approach. Therefore, these approaches can help to understand the shifts in aquatic ecosystems under extreme hydrological events and predict functional response of phytoplankton being an important tool to water management and conservation. Supplementary Information The online version contains supplementary material available at 10.1007/s10750-023-05241-3.

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Ecological meta-analysis of bloom-forming planktonic Cyanobacteria in Argentina

Cited by 32 publications

References 37 publications

Drivers and ecological consequences of dominance in periurban phytoplankton communities using networks approaches

Drivers and ecological consequences of dominance in periurban phytoplankton communities using networks approaches

Spatial variation of picoplankton communities along a cascade reservoir system in Patagonia, Argentina

Phytoplankton functional responses induced by extreme hydrological events in a tropical reservoir

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