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Drivers of phytoplankton responses to summer wind events in a stratified lake: A modeling study
- Source :
- Limnology and Oceanography, Limnology and oceanography (2022)
- Publication Year :
- 2022
- Publisher :
- Wiley, 2022.
-
Abstract
- Extreme wind events affect lake phytoplankton amongst others by deepening the mixed layer and increasing internal nutrient loading. Both increases and decreases of phytoplankton biomass after storms have been observed, but the precise mechanisms driving these responses remain poorly understood or quantified. In this study, we coupled a one-dimensional physical model to a biogeochemical model to investigate the factors regulating short-term phytoplankton responses to summer storms, now and under expected warmer future conditions. We simulated physical, chemical and biological dynamics in Lake Erken, Sweden, and found that wind storms could increase or decrease the phytoplankton concentration one week after the storm, depending on antecedent lake physical and chemical conditions. Storms had little effect on phytoplankton biomass if the mixed layer was deep prior to storm exposure. Higher incoming shortwave radiation and hypolimnetic nutrient concentration boosted growth, whereas higher surface water temperatures decreased phytoplankton concentration after storms. Medium-intensity wind speeds resulted in more phytoplankton biomass after storms than high-intensity wind. Simulations under a future climate scenario did not show marked differences in the way wind affects phytoplankton growth following storms. Our study shows that storm impacts on lake phytoplankton are complex and likely to vary as a function of local environmental conditions. Title in thesis list of papers:Drivers of phytoplankton responses to summer storms in a stratified lake: a modelling study
- Subjects :
- Storms
Nutrient entrainment
ddc:500.2
Oceanography, Hydrology, Water Resources
Aquatic Science
Oceanography
Modelling
Mixing
Extreme winds
ddc:550
Climate change
ddc:333.7-333.9
Phytoplancton
integumentary system
fungi
500 Naturwissenschaften und Mathematik::570 Biowissenschaften
Biologie::570 Biowissenschaften
Biologie
Extreme events
Miljövetenskap
Phytoplankton
Lake model
Stratification
extreme wind events
Environmental Sciences
lake phytoplankton
internal nutrient loading
Subjects
Details
- ISSN :
- 19395590 and 00243590
- Volume :
- 67
- Database :
- OpenAIRE
- Journal :
- Limnology and Oceanography
- Accession number :
- edsair.doi.dedup.....9f02f1d8baca70eeac64414612218ecb