Large-scale geographical and environmental drivers of shallow lake diatom metacommunities across Europe

Rodríguez-Alcalá, Omar; Blanco, Saúl; García‐Girón, Jorge; Irvine, Ken; Nõges, Peeter; Nõges, Tiina; Gross, Elisabeth Maria; Bécares, Eloy

doi:10.1016/j.scitotenv.2019.135887

Cited by 16 publications

(7 citation statements)

References 64 publications

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“…We consider temporary ponds those that permanently dried every year, whereas permanent ponds are those that do not dry for at least a decade (Chase, 2003). Our recent results (Rodríguez Alcalá et al, 2019) show that changes in diatom composition are mostly driven by conductivity and water depth; therefore, turbidity and conductivity were the unique environmental variables that were measured in situ since they are considered as excellent proxies of ecological status in continental lakes . Periphytic diatoms were collected from each system and samples were processed and analyzed in the laboratory by following the method explained in Blanco & Becares (2006).…”

Section: Methodsmentioning

confidence: 98%

Identifying environmental drivers of benthic diatom diversity: the case of Mediterranean mountain ponds

Blanco

Olenici

Ortega

et al. 2020

PeerJ

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This study aims at elucidating the environmental factors controlling benthic diatom diversity and uniqueness in Mediterranean mountain ponds. Samples of periphytic diatoms were collected in 45 ponds in Andalusia, south of Spain, and analysed by standard methods. Data analysis reveals that diatom diversity is mainly controlled by elevation and hydroperiod. Contrary to the usual findings in the literature, the highest scores on Shannon’s diversity index were found in high-elevation temporary ponds, but this effect is hidden by lake clustering in the analysed dataset. Significant distance-decay similarity (DDS) trends were detected in the analysis of floristic composition among the samples, stressing the importance of spatial factors that may override the effect of other abiotic factors. These findings highlight the role of isolation and dispersal limitation in the configuration of the biogeographical patterns of benthic diatoms.

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Section: Methodsmentioning

confidence: 98%

Identifying environmental drivers of benthic diatom diversity: the case of Mediterranean mountain ponds

Blanco

Olenici

Ortega

et al. 2020

PeerJ

Self Cite

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“…Spatially, there was no significant difference between the communities of the sampling sites, which is consistent with the results of the PCA ranking analysis of the main environmental factors ( Figure 3 ). Similar physical and chemical parameters would lead to a similar algal community [ 33 , 34 ]. In this study, we found that the communities at the sampling sites were similar.…”

Section: Discussionmentioning

confidence: 99%

Succession and Driving Factors of Periphytic Community in the Middle Route Project of South-to-North Water Division (Henan, China)

Chen

Wang

et al. 2022

IJERPH

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The Middle Route Project of the South-to-North Water Diversion is an artificially independent system that does not connect to other surface waters. Excessive periphyton proliferation causes a series of environmental problems in the canal. In this study, the periphyton community and environmental factors on the left and right banks of the canal in the algal growing area were investigated and sampled six times (June, September, and November of 2019 and 2020). The succession pattern of the attached organism community in the artificial canal was analyzed, and the key factors affecting the algal community were analyzed using RDA and GAM. The results showed that the seasonal variability of the environmental factors was more significant than the spatial variability. A total of 114 taxa of periphytic algae were found, belonging to seven phyla and 69 genera, and mainly composed of Bacillariophyta. Species richness was ranked as Bacillariophyta (60 taxa), Chlorophyta (31 taxa) and Cyanobacteria (15 taxa), and higher in autumn than in summer. The dominant taxa were Cymbella sp., Fragilaria sp., Navicula sp. and Diatoma sp. The abundance of periphytic algal varied from 0.07 × 105 to 8.99 × 105 ind./cm2, with trends similar to that of species richness. The redundancy analysis and generalized additive model showed that water temperature and nutrient concentration were the key factors influencing the structure of the algal community, followed by discharge rate and velocity, which were the determinants of the spatial and temporal patterns of the algal community. In view of the influence of discharge and velocity on the structure of algal communities, it is suggested that ecological scheduling could be used to regulate the structure of the algal community on the canal wall in the operation of later water division projects to ensure the safety of water division.

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“…The Sorensen index also shows greater similarity in May 2017, which is mainly due to the dominance of Cyanobacteria in all reservoirs with a high percentage of common taxa among reservoirs. In accordance with a β-diversity concept [121], species turnover implies the replacement of species as a consequence of environmental changing, and systems with high β diversities usually have a higher conservation value [122]. The wet period causes a change in the community, which is reflected differently in each reservoir (great dissimilarity), being fundamental for a renewal of the community structure.…”

Section: Phytoplankton 421 Phytoplankton Assemblages and Diversitymentioning

confidence: 99%

Some Observations on Phytoplankton Community Structure, Dynamics and Their Relationship to Water Quality in Five Santiago Island Reservoirs, Cape Verde

Morais

Penha

Novais

et al. 2021

Water

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Reservoirs provide valuable services to human beings, especially in arid, semi-arid, and Mediterranean regions affected by water scarcity. The present effort aims to study the environmental descriptors of variation and the main factors influencing phytoplankton composition, structure, and diversity in five reservoirs in Santiago Island, Cape Verde, a region affected by water availability. Five campaigns took place from 2016 to 2020 to sample phytoplankton and measure environmental variables according to standard analytical methodologies. Environmental results (17 water physicochemical variables, air temperature, and precipitation) revealed that reservoirs differ in the geological influence variables. The high levels of P and N in water seem to be related to Land Use/Land Cover and are responsible for water-quality degradation. Cyanobacteria dominated the phytoplankton community and posed high risk levels, especially considering that the identified taxa are potential producers of different toxins. Taxa responsible for this dominance were not the same in all reservoirs, emphasizing the dominant role of local habitat factors on community composition and diversity. Overall, the results reveal the importance of defining integrated management plans/strategies for the set of five studied reservoirs, since the processes influencing variation in the phytoplankton community are temporal-scale dependent, with similar biogeographic patterns.

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Large-scale geographical and environmental drivers of shallow lake diatom metacommunities across Europe

Cited by 16 publications

References 64 publications

Identifying environmental drivers of benthic diatom diversity: the case of Mediterranean mountain ponds

Identifying environmental drivers of benthic diatom diversity: the case of Mediterranean mountain ponds

Succession and Driving Factors of Periphytic Community in the Middle Route Project of South-to-North Water Division (Henan, China)

Some Observations on Phytoplankton Community Structure, Dynamics and Their Relationship to Water Quality in Five Santiago Island Reservoirs, Cape Verde

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