Disentangling the effects of climate change and reoligotrophication on primary production in a large lake

Krishna, Shubham; Ulloa, Hugo N.; Barbe, Emile; Wüest, Alfred

doi:10.1007/s00027-022-00910-2

Aquat Sci

2022

DOI: 10.1007/s00027-022-00910-2

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Disentangling the effects of climate change and reoligotrophication on primary production in a large lake

Shubham Krishna

Hugo N. Ulloa

Emile Barbe

et al.

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Cited by 3 publications

References 82 publications

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Temperatures and hypolimnetic oxygen in German lakes: Observations, future trends and adaptation potential

Schwefel,

Nkwalale,

Jordan

et al. 2024

Ambio

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We investigated trends in temperature, stratification, and hypolimnetic oxygen concentration of German lakes under climate change using observational data and hydrodynamic modelling. Observations from 46 lakes revealed that annually averaged surface temperatures increased by + 0.5 °C between 1990 and 2020 while bottom temperatures remained almost constant. Modelling of 12 lakes predicted further increases in surface temperatures by 0.3 °C/decade until the year 2099 in the most pessimistic emission scenario RCP 8.5 (RCP 4.5: + 0.18 °C/decade; RCP 2.6: + 0.04 °C/decade). Again, bottom temperatures increased much less while summer stratification extended by up to 38 days. Using a simplified oxygen model, we showed that hypolimnetic oxygen concentrations decreased by 0.7–1.9 mg L−1 in response to the extended stratification period. However, model runs assuming lower productivity (e. g. through nutrient reduction) resulted in increased oxygen concentrations even in the most pessimistic emission scenario. Our results suggest that the negative effects of climate change on the oxygen budget of lakes can be efficiently mitigated by nutrient control.

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Temperatures and hypolimnetic oxygen in German lakes: Observations, future trends and adaptation potential

Schwefel,

Nkwalale,

Jordan

et al. 2024

Ambio

View full text Add to dashboard Cite

show abstract

The impacts of climate change on thermal stratification and dissolved oxygen in the temperate, dimictic Mississippi Lake, Ontario

Yaghouti

Heidarzadeh

Ulloa

et al. 2023

Ecological Informatics

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Response and acclimation of cyanobacteria to acidification: A comprehensive review

Zhang,

Dong

et al. 2024

Science of The Total Environment

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Disentangling the effects of climate change and reoligotrophication on primary production in a large lake

Cited by 3 publications

References 82 publications

Temperatures and hypolimnetic oxygen in German lakes: Observations, future trends and adaptation potential

Temperatures and hypolimnetic oxygen in German lakes: Observations, future trends and adaptation potential

The impacts of climate change on thermal stratification and dissolved oxygen in the temperate, dimictic Mississippi Lake, Ontario

Response and acclimation of cyanobacteria to acidification: A comprehensive review

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