Predation increases multiple components of microbial diversity in activated sludge communities

Burian, Alfred; Pinn, Daisy; Peralta‐Maraver, Ignacio; Sweet, Michael; Mauvisseau, Quentin; Eyice, Özge; Bulling, Mark T.; Röthig, Till; Kratina, Pavel

doi:10.1038/s41396-021-01145-z

Cited by 20 publications

(13 citation statements)

References 78 publications

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“…Richness and evenness were calculated using the "phyloseq" package 88 . Phylogenetic trees were created with the FastTree software (Qiime2 plugin) 92 . Phylogenetic diversity was quantified through Rao's quadratic entropy from the R package "picante" 93 .…”

Section: Discussionmentioning

confidence: 99%

Environmental changes associated with drying climate are expected to affect functional groups of pro- and microeukaryotes differently in temporary saline waters

Márton

Szabó

Vad

et al. 2023

Sci Rep

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Temporary ponds are among the most sensitive aquatic habitats to climate change. Their microbial communities have crucial roles in food webs and biogeochemical cycling, yet how their communities are assembled along environmental gradients is still understudied. This study aimed to reveal the environmental drivers of diversity (OTU-based richness, evenness, and phylogenetic diversity) and community composition from a network of saline temporary ponds, soda pans, in two consecutive spring seasons characterized by contrasting weather conditions. We used DNA-based molecular methods to investigate microbial community composition. We tested the effect of environmental variables on the diversity of prokaryotic (Bacteria, Cyanobacteria) and microeukaryotic functional groups (ciliates, heterotrophic flagellates and nanoflagellates, fungi, phytoplankton) within and across the years. Conductivity and the concentration of total suspended solids and phosphorus were the most important environmental variables affecting diversity patterns in all functional groups. Environmental conditions were harsher and they also had a stronger impact on community composition in the dry spring. Our results imply that these conditions, which are becoming more frequent with climate change, have a negative effect on microbial diversity in temporary saline ponds. This eventually might translate into community-level shifts across trophic groups with changing local conditions with implications for ecosystem functioning.

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Section: Discussionmentioning

confidence: 99%

Environmental changes associated with drying climate are expected to affect functional groups of pro- and microeukaryotes differently in temporary saline waters

Márton

Szabó

Vad

et al. 2023

Sci Rep

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“…The anova() function (stats package version 4.2.0, R Core Team 2022) was then used to evaluate the significance of these effects, with plant number considered as a random effect. The contrast tests were implemented using the art.con() function (ARTool package) [ 107 , 110 , 111 ].…”

Section: Methodsmentioning

confidence: 99%

Non-Additive Effects of Environmental Factors on Growth and Physiology of Invasive Solidago canadensis and a Co-Occurring Native Species (Artemisia argyi)

Yang

Cui

et al. 2022

Plants

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Changes in environmental factors, such as temperature and UV, have significant impacts on the growth and development of both native and invasive plant species. However, few studies examine the combined effects of warming and enhanced UV on plant growth and performance in invasive species. Here, we investigated single and combined effects of warming and UV radiation on growth, leaf functional and photosynthesis traits, and nutrient content (i.e., total organic carbon, nitrogen and phosphorous) of invasive Solidago canadensis and its co-occurring native species, Artemisia argyi, when grown in culture racks in the greenhouse. The species were grown in monoculture and together in a mixed community, with and without warming, and with and without increased UV in a full factorial design. We found that growth in S. canadensis and A. argyi were inhibited and more affected by warming than UV-B radiation. Additionally, there were both antagonistic and synergistic interactions between warming and UV-B on growth and performance in both species. Overall, our results suggested that S. canadensis was more tolerant to elevated temperatures and high UV radiation compared to the native species. Therefore, substantial increases in temperature and UV-B may favour invasive S. canadensis over native A. argyi. Research focusing on the effects of a wider range of temperatures and UV levels is required to improve our understanding of the responses of these two species to greater environmental variability and the impacts of climate change.

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“…Richness and evenness were calculated using the “phyloseq” package 85 . Phylogenetic trees were created with the FastTree software (Qiime2 plugin) 86 . Phylogenetic diversity was quantified through Rao’s quadratic entropy from the R package “picante” 93 .…”

Section: Methodsmentioning

confidence: 99%

Environmental changes associated with drying climate are expected to affect functional groups of pro- and microeukaryotes differently in temporary saline waters

Márton

Szabó

Vad

et al. 2022

Preprint

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Temporary ponds are one of the most sensitive aquatic habitats to climate change. Their microbial communities have crucial roles in food webs and biogeochemical cycling, yet how their communities are assembled along environmental gradients is still understudied. This study aimed to reveal the environmental drivers of the microbial diversity and phylogenetic diversity patterns from a network of saline temporary ponds (soda pans in Austria) in two consecutive spring seasons characterized by contrasting weather conditions (one dry, one wetter). These habitats exhibit multiple environmental stress gradients and are therefore a highly suitable model system to understand the responses of microbial communities. We used DNA-based molecular methods (16S rRNA, 18S rRNA) to investigate the microbial community composition. We tested the effect of environmental variables on the diversity of prokaryotic and microeukaryotic functional groups (Bacteria, Cyanobacteria, Ciliates, heterotrophic flagellates and nanoflagellates, Fungi, phytoplankton) within and across the years. Conductivity and the concentration of total suspended solids and phosphorus were the most important environmental variables affecting all six functional groups. Environmental conditions were harsher and they also had a stronger impact on community composition in the dry spring. Our results imply that harsher environmental conditions, which are becoming more frequent with climate change, have a negative effect on most levels of microbial diversity in temporary saline ponds. At the same time, not all microbial functional groups responded the same way to harsher environmental conditions. This eventually might translate into community-level shifts across trophic groups with changing local conditions with implications for ecosystem functioning. This is the first regional-level study to properly assess how microbial diversity of these rare and threatened ecosystems is shaped by environmental gradients based on amplicon sequencing. We encourage further long-term monitoring studies of these ponds, in order to specifically link changes in the local conditions to the changing climatic parameters.

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Predation increases multiple components of microbial diversity in activated sludge communities

Cited by 20 publications

References 78 publications

Environmental changes associated with drying climate are expected to affect functional groups of pro- and microeukaryotes differently in temporary saline waters

Environmental changes associated with drying climate are expected to affect functional groups of pro- and microeukaryotes differently in temporary saline waters

Non-Additive Effects of Environmental Factors on Growth and Physiology of Invasive Solidago canadensis and a Co-Occurring Native Species (Artemisia argyi)

Environmental changes associated with drying climate are expected to affect functional groups of pro- and microeukaryotes differently in temporary saline waters

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