Warming and CO2 effects under oligotrophication on temperate phytoplankton communities

Cabrerizo, Marco J.; Álvarez-Manzaneda, M. Inmaculada; León‐Palmero, Elizabeth; Guerrero-Jiménez, Gerardo; Domis, Lisette de Senerpont; Teurlincx, Sven; González-Olalla, Juan Manuel

doi:10.1016/j.watres.2020.115579

Cited by 17 publications

(10 citation statements)

References 77 publications

(73 reference statements)

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“…There still remains the question whether cyanobacteria will thrive and impact zooplankton in oligotrophic lakes in the future. Even though recent data suggest that cyanobacterial growth is impaired in low‐nutrient environments (Cabrerizo et al., 2020), it was also shown that the ability of some cyanobacteria to utilise nutrients can be improved by increasing CO 2 (Ma et al., 2019). Considering this, together with the predicted increase in CO 2 concentration from 400 ppm in the present up to 1,000 ppm by the end of the 21st century (IPCC Report, 2018), as well as the increased potential of M. aeruginosa to cope with change, as shown in this study, it can be expected that cyanobacteria will also adapt to low‐nutrient environments.…”

Section: Discussionmentioning

confidence: 99%

Section: Cylindrospermopsis or Microcystis Show Widely Varying Responsesmentioning

confidence: 99%

“…) for light in eutrophic lakes, especially in connection with elevated temperatures (Drugă et al, 2019;Jöhnk et al, 2008). By contrast, mesocosm tests have indicated that lower nutrient concentrations might alleviate the otherwise positive effect of climate change on cyanobacteria proliferation (Cabrerizo et al, 2020). However, the vast majority of the studies done so far were based on short-term small-scale laboratory experiments, which do not account for the potential of cyanobacteria to long-term acclimate under tested conditions (Ji et al, 2017;Soares et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Long‐term acclimation might enhance the growth and competitive ability of Microcystis aeruginosa in warm environments

et al. 2021

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The positive effect of global warming on the growth of cyanobacteria has been widely predicted, but long‐term studies targeting their adaptive potential to higher temperature have not been carried out so far. Predicting the magnitude and impact of cyanobacterial blooms in the future as a response to global warming requires an understanding of how cyanobacteria might change in the long term due to climate change. Here we examined the effect of exposing three Microcystis aeruginosa strains isolated in Romania to ambient (22°C) and high (26°C) temperature for 6 months. Then, the competitive ability of the strains after heat acclimation was evaluated, by analysing their impact on plankton community composition. One of the three strains displayed significantly higher growth rates after 6 months of cultivation at higher temperatures. Following inoculation into a natural plankton community, the overall cyanobacterial abundance significantly increased in the cultures inoculated with this heat‐acclimated strain of M. aeruginosa as compared to the ambient‐acclimated version. The structure of eukaryotic communities was impacted by both inoculated cyanobacteria and temperature during the experiments. The results of this study emphasise the high potential of cyanobacteria to respond to stressors, and highlight the fact that previous acclimation to warming is a critical factor in shaping the overall structure of plankton communities. Our study strongly advocates for including a step of culture acclimation to future experimental conditions in research programmes aiming to better understand the long‐term impact of climate change on aquatic ecosystems.

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Section: Discussionmentioning

confidence: 99%

Section: Cylindrospermopsis or Microcystis Show Widely Varying Responsesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Long‐term acclimation might enhance the growth and competitive ability of Microcystis aeruginosa in warm environments

et al. 2021

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“…Most experimental studies on the efficacy of eutrophication control measures under climate change to date used continuous warming temperature scenarios (Cabrerizo et al 2020), while few have investigated sudden and large temperature boosts (i.e. heatwaves) and the potential for post-heatwave recovery in lakes.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of phosphorus control under extreme heatwaves: implications for sediment nutrient releases and greenhouse gas emissions

et al. 2021

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Eutrophication has been identified as the primary cause of water quality deterioration in inland waters worldwide, often associated with algal blooms or fish kills. Eutrophication can be controlled through watershed management and in-lake measures. An extreme heatwave event, through its impact on mineralization rates and internal nutrient loading (phosphorus—P, and nitrogen—N), could counteract eutrophication control measures. We investigated how the effectiveness of a nutrient abatement technique is impacted by an extreme heatwave, and to what extent biogeochemical processes are modulated by exposure to heatwaves. To this end, we carried out a sediment-incubation experiment, testing the effectiveness of lanthanum-modified bentonite (LMB) in reducing nutrients and greenhouse gas emissions from eutrophic sediments, with and without exposure to an extreme heatwave. Our results indicate that the effectiveness of LMB may be compromised upon exposure to an extreme heatwave event. This was evidenced by an increase in concentration of 0.08 ± 0.03 mg P/L with an overlying water volume of 863 ± 21 mL, equalling an 11% increase, with effects lasting to the end of the experiment. LMB application generally showed no effect on nitrogen species, while the heatwave stimulated nitrification, resulting in ammonium loss and accumulation of dissolved oxidized nitrogen species as well as increased dissolved nitrous oxide concentrations. In addition, carbon dioxide (CO2)-equivalent was more than doubled during the heatwave relative to the reference temperature, and LMB application had no effect on mitigating them. Our sediment incubation experiment indicates that the rates of biogeochemical processes can be significantly accelerated upon heatwave exposure, resulting in a change in fluxes of nutrient and greenhouse gas between sediment and water. The current efforts in eutrophication control will face more challenges under future climate scenarios with more frequent and intense extreme events as predicted by the IPCC.

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“…The online version of this article (https ://doi.org/10.1007/s0044 2-020-04677 -x) contains supplementary material, which is available to authorized users. Tong et al 2017), and its interactive effects with climate change has only recently started to gain considerable interest (Verbeek et al 2018;Cabrerizo et al 2020). This calls for a need to better understand climate-change driven planktonic changes in nutrient-poor lakes.…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Grazing resistance and poor food quality of a widespread mixotroph impair zooplankton secondary production

et al. 2020

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Growing evidence suggests that global climate change promotes the dominance of mixotrophic algae especially in oligotrophic aquatic ecosystems. While theory predicts that mixotrophy increases trophic transfer efficiency in aquatic food webs, deleterious effects of some mixotrophs on consumers have also been reported. Here, using a widespread mixotrophic algal genus Dinobryon, we aimed to quantify how colonial taxa contribute to secondary production in lakes. We, therefore, studied the dietary effects of Dinobryon divergens on Cladocera (Daphnia longispina) and Copepoda (Eudiaptomus gracilis), representing two main taxonomic and functional groups of zooplankton. In feeding experiments, we showed that Dinobryon was largely grazing resistant and even inhibited the uptake of the high-quality reference food in Daphnia. Eudiaptomus could to some extent compensate with selective feeding, but a negative long-term food quality effect was also evident. Besides, Eudiaptomus was more sensitive to the pure diet of Dinobryon than Daphnia. Low lipid content and high C:P elemental ratio further supported the low nutritional value of the mixotroph. In a stable isotope approach analysing a natural plankton community, we found further evidence that carbon of Dinobryon was not conveyed efficiently to zooplankton. Our results show that the increasing dominance of colonial mixotrophs can result in reduced dietary energy transfer to consumers at higher trophic levels. In a wider perspective, global climate change favours the dominance of some detrimental mixotrophic algae which may constrain pelagic trophic transfer efficiency in oligotrophic systems, similarly to cyanobacteria in eutrophic lakes.

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Warming and CO2 effects under oligotrophication on temperate phytoplankton communities

Cited by 17 publications

References 77 publications

Long‐term acclimation might enhance the growth and competitive ability of Microcystis aeruginosa in warm environments

Long‐term acclimation might enhance the growth and competitive ability of Microcystis aeruginosa in warm environments

Effectiveness of phosphorus control under extreme heatwaves: implications for sediment nutrient releases and greenhouse gas emissions

Grazing resistance and poor food quality of a widespread mixotroph impair zooplankton secondary production

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