Phytoplankton responses to repeated pulse perturbations imposed on a trend of increasing eutrophication

Stelzer, Julio Alberto Alegre; Mesman, Jorrit P.; Gsell, Alena S.; Domis, Lisette N. Senerpont; Visser, Petra M.; Adrian, Rita; Ibelings, Bastiaan Willem

doi:10.1002/ece3.8675

Cited by 7 publications

(2 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As sentinels within catchments, lakes can be particularly susceptible to climate change (Adrian et al, 2009; Stelzer et al, 2022). Along with shifts in the average climate, this also includes the increasing intensity and frequency of extreme climatic events (“ECEs”).…”

Section: Introductionmentioning

confidence: 99%

Stressors in a bottle: A microcosm study on phytoplankton assemblage response to extreme precipitation events under climate warming

et al. 2023

View full text Add to dashboard Cite

The climatic stressors that are affecting lake ecosystems, especially phytoplankton, are projected to become more intense with continued climate change (e.g., heatwaves, precipitation events). Concerns over the combined effects that multiple, coinciding stressors can have on phytoplankton necessitates investigating the impacts of different regional climate scenarios. A microcosm study was conducted to assess the responses of a phytoplankton assemblage containing a cyanobacterium (Anabaena flos‐aquae), a green alga (Chlorella vulgaris) and a diatom (Synedra) to a northwestern European summer scenario. Eutrophic microcosms were exposed to a full‐factorial design including a press temperature treatment scenario (ambient or warm) and a pulse precipitation treatment (no runoff simulation or runoff simulation). Warming scenarios had significant effects on the phytoplankton assemblage biomass, which supports our first hypothesis (H1: higher water temperatures under eutrophic conditions will support larger phytoplankton biomasses, especially cyanobacteria). By contrast, the extreme precipitation runoff event had minimal and short‐lived effects on the microcosm assemblage. Overall, the interaction between the two climate stressors was antagonistic. In contrast with our second hypothesis (H2: nutrient additions from extreme precipitation runoff will promote more productivity in higher temperature microcosms), the precipitation runoff event was not amplified by temperature. Our results indicate that the combined effect of two climate stressors on a phytoplankton community are not necessarily synergistic or multiplicative. Our findings on antagonistic interactions between climatic stressors necessitate future studies assessing variations of intensity and duration of the climatic stressors.

show abstract

Section: Introductionmentioning

confidence: 99%

Stressors in a bottle: A microcosm study on phytoplankton assemblage response to extreme precipitation events under climate warming

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In recent years, the aggravation of industrial and agricultural production activities has caused increasingly severe eutrophication in need of urgent treatment (Stelzer et al, 2022). Therefore, scientists have invested vast effort in the field of nitrate removal.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous denitrification and electricity generation in a methane‐powered bioelectrochemical system

Chen

Guo

Zhang

et al. 2023

Water Environment Research

View full text Add to dashboard Cite

Bioelectrochemical system is a novel method for controlling down nitrate pollution, yet the feasibility of using methane as the electron donors for denitrification in this system remains unknown. In this study, using the effluent from mother BESs as inocula, a denitrifying anaerobic methane oxidation bioelectrochemical system was successfully started up in 92 days. When operated with 50 mmol/L phosphate buffer solution at pH 7 and 30°C, the maximum methane consumption, nitrate, and total nitrogen removal load reached 0.23 ± 0.01 mmol/d, 551.0 ± 22.1 mg N/m3/d, and 64.0 ± 18.8 mg N/m3/d, respectively. Meanwhile, the peak voltage of 93 ± 4 mV, the anodic coulombic efficiency of 6.99 ± 0.20%, and the maximum power density of 219.86 mW/m3 were obtained. The metagenomics profiles revealed that the dominant denitrifying bacteria in the cathodic chamber reduced most nitrate to nitrite through denitrification and assimilatory reduction. In the anodic chamber, various archaea including methanotrophs and methanogens converted methane via reverse methanogenesis to form formate (or H2), acetate, and methyl compounds, which were than utilized by electroactive bacteria to generate electricity.Practitioner Points A denitrifying anaerobic methane oxidation BES was successfully started up in 92 d. Simultaneous removal of methane and nitrate was achieved in the DAMO‐BES. Functional genes related to AMO and denitrification were detected in the DAMO‐BES. Methylocystis can mediate AMO in the anode and denitrification in the cathode.

show abstract

Phytoplankton responses to repeated pulse perturbations imposed on a trend of increasing eutrophication

Stelzer

Mesman

Gsell

et al. 2022

Ecology and Evolution

Self Cite

View full text Add to dashboard Cite

While eutrophication remains one of the main pressures acting on freshwater ecosystems, the prevalence of anthropogenic and nature‐induced stochastic pulse perturbations is predicted to increase due to climate change. Despite all our knowledge on the effects of eutrophication and stochastic events operating in isolation, we know little about how eutrophication may affect the response and recovery of aquatic ecosystems to pulse perturbations. There are multiple ways in which eutrophication and pulse perturbations may interact to induce potentially synergic changes in the system, for instance, by increasing the amount of nutrients released after a pulse perturbation. Here, we performed a controlled press and pulse perturbation experiment using mesocosms filled with natural lake water to address how eutrophication modulates the phytoplankton response to sequential mortality pulse perturbations; and what is the combined effect of press and pulse perturbations on the resistance and resilience of the phytoplankton community. Our experiment showed that eutrophication increased the absolute scale of the chlorophyll‐ a response to pulse perturbations but did not change the proportion of the response relative to its pre‐event condition (resistance). Moreover, the capacity of the community to recover from pulse perturbations was significantly affected by the cumulative effect of sequential pulse perturbations but not by eutrophication itself. By the end of the experiment, some mesocosms could not recover from pulse perturbations, irrespective of the trophic state induced by the press perturbation. While not resisting or recovering any less from pulse perturbations, phytoplankton communities from eutrophying systems showed chlorophyll‐ a levels much higher than non‐eutrophying ones. This implies that the higher absolute response to stochastic pulse perturbations in a eutrophying system may increase the already significant risks for water quality (e.g., algal blooms in drinking water supplies), even if the relative scale of the response to pulse perturbations between eutrophying and non‐eutrophying systems remains the same.

show abstract

Phytoplankton responses to repeated pulse perturbations imposed on a trend of increasing eutrophication

Cited by 7 publications

References 86 publications

Stressors in a bottle: A microcosm study on phytoplankton assemblage response to extreme precipitation events under climate warming

Stressors in a bottle: A microcosm study on phytoplankton assemblage response to extreme precipitation events under climate warming

Simultaneous denitrification and electricity generation in a methane‐powered bioelectrochemical system

Phytoplankton responses to repeated pulse perturbations imposed on a trend of increasing eutrophication

Contact Info

Product

Resources

About