Synergetic microorganismic convection generated by Opercularia asymmetrica ciliates living in a colony as effective fluid transport on the micro-scale

Zima-Kulisiewicz, Bogumila Ewelina; Delgado, Antonio

doi:10.1016/j.jbiomech.2009.06.018

Cited by 11 publications

(7 citation statements)

References 16 publications

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“…Our experiments support this conclusion for natural communities: We suggest that the observed density effect at least partly resulted from a competitive advantage, specifically the access to an additional prey source, of the dominating planktivorous filter feeders (Connell and Slatyer 1977). Planktivorous filter feeders such as peritrichs and heterotrichs can generate strong feeding currents that are still measurable several hundred micrometres away from the cell Lemmer 2003, Hartmann et al 2007) and prey retention can be very effective (Hartmann et al 2007, Zima-Kulisiewicz andDelgado 2009). Additionally, rescue effects from surrounding undisturbed patches (Leibold et al 2004) are likely.…”

Section: Disturbance Can Strongly Alter the Effects Of Warming On Comsupporting

confidence: 58%

“…Considering our experimental design, this is remarkable: in most cases, even a 50% or 100% removal of the biofilm every two to three days resulted in a functional diversity similar to undisturbed, mature communities. Planktivorous filter feeders such as peritrichs and heterotrichs can generate strong feeding currents that are still measurable several hundred micrometres away from the cell Lemmer 2003, Hartmann et al 2007) and prey retention can be very effective (Hartmann et al 2007, Zima-Kulisiewicz andDelgado 2009). Results from laboratory microcosms show that interspecific competition can consistently regulate community structure over a broad disturbance gradient, leading to competitive exclusion even at high disturbance intensities where good colonizers are conventionally believed to be in advantage (Violle et al 2010).…”

Section: Disturbance Can Strongly Alter the Effects Of Warming On Commentioning

confidence: 99%

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Disturbance alters the response of consumer communities towards warming: a mesocosm study with biofilm‐dwelling ciliates

et al. 2014

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Citation: Marcus, H., J. K. Wey, H. Norf, and M. Weitere. 2013. Disturbance alters the response of consumer communities towards warming: A mesocosm study with biofilm-dwelling ciliates. Ecosphere 5(1):10. http://dx.Abstract. Environmental warming can have negative effects on the carrying capacity of communities because metabolic rates increase at the expense of biomass. Here, we tested the hypothesis that such warming effects are reversed in communities experiencing disturbance, as temperature-driven growth processes gain relevance and can compensate for negative disturbance effects. Model communities of seminatural, biofilm-dwelling ciliates were cultivated in mesocosms (river bypass systems) under two temperature regimes (ambient temperature and increased by 48C). The interactive effects between these different temperatures and seven disturbance intensities were tested in a nested design. Disturbance generally reduced total ciliate abundances, whereas only small effects on the prevalence of functional diversity were detected. Temperature effects differed between different disturbance intensities and seasons: Whereas warming reduced the carrying capacity of undisturbed communities irrespective of the season, pronounced positive warming effects were detected under disturbance in winter and, to a lesser extent, in spring. Neither significant temperature nor disturbance effects were recorded in summer, probably because ciliate growth rates were not temperature limited due to high summer background temperatures. Our results show that disturbance can markedly alter warming effects on temperature limited communities. Since natural communities commonly face disturbance, it should therefore be considered in models of future environmental warming responses.

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Section: Disturbance Can Strongly Alter the Effects Of Warming On Comsupporting

confidence: 58%

Section: Disturbance Can Strongly Alter the Effects Of Warming On Commentioning

confidence: 99%

Disturbance alters the response of consumer communities towards warming: a mesocosm study with biofilm‐dwelling ciliates

et al. 2014

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“…Whole homogenized milk (0.25 to 0.5 mL) was added to ∼5 to 10% concentration for flow visualization. Suspended milk particles typically range between 0.3 and 3.0 μm and encourage high levels of consistent, flow generation by peritrich ciliates (56).…”

Section: Methodsmentioning

confidence: 99%

Teamwork in the viscous oceanic microscale

Kanso

Lopes

Strickler

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

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Nutrient acquisition is crucial for oceanic microbes, and competitive solutions to solve this challenge have evolved among a range of unicellular protists. However, solitary solutions are not the only approach found in natural populations. A diverse array of oceanic protists form temporary or even long-lasting attachments to other protists and marine aggregates. Do these planktonic consortia provide benefits to their members? Here, we use empirical and modeling approaches to evaluate whether the relationship between a large centric diatom, Coscinodiscus wailesii, and a ciliate epibiont, Pseudovorticella coscinodisci, provides nutrient flux benefits to the host diatom. We find that fluid flows generated by ciliary beating can increase nutrient flux to a diatom cell surface four to 10 times that of a still cell without ciliate epibionts. This cosmopolitan species of diatom does not form consortia in all environments but frequently joins such consortia in nutrient-depleted waters. Our results demonstrate that symbiotic consortia provide a cooperative alternative of comparable or greater magnitude to sinking for enhancement of nutrient acquisition in challenging environments.

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“…From the micrographs of the present study, strains such as Acinetobacter calcoaceticus [45] as well as stalked ciliates such as Paramecium sp., Epistylis sp., Opercularia sp., and Vorticella sp. can be distinguished in the acclimatized sludge with biochar [23,46,47]. The synergistic effects of such species can further improve the biodegradation of aromatic hydrocarbons from wastewater [23,47].…”

Section: Microbial Growthmentioning

confidence: 99%

Acclimatized activated sludge for enhanced phenolic wastewater treatment using pinewood biochar

Kamali

Aminabhavi

Tarelho

et al. 2022

Chemical Engineering Journal

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Synergetic microorganismic convection generated by Opercularia asymmetrica ciliates living in a colony as effective fluid transport on the micro-scale

Cited by 11 publications

References 16 publications

Disturbance alters the response of consumer communities towards warming: a mesocosm study with biofilm‐dwelling ciliates

Disturbance alters the response of consumer communities towards warming: a mesocosm study with biofilm‐dwelling ciliates

Teamwork in the viscous oceanic microscale

Acclimatized activated sludge for enhanced phenolic wastewater treatment using pinewood biochar

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