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Drivers of phytoplankton responses to summer wind events in a stratified lake: A modeling study

Mesman, Jorrit P. and Ayala, Ana and Goyette, Stephane and Kasparian, Jerome and Marce, Rafael and Markensten, Hampus and Stelzer, Julio A. A. and Thayne, Michael W. and Thomas, Mridul K. and Pierson, Don C. and Ibelings, Bas W. (2022). Drivers of phytoplankton responses to summer wind events in a stratified lake: A modeling study. Limnology and Oceanography. 67 :4 , 856-873
[Research article]

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Abstract

Extreme wind events affect lake phytoplankton by deepening the mixed layer and increasing internal nutrient loading. Both increases and decreases in phytoplankton concentration after strong wind events have been observed, but the precise mechanisms driving these responses remain poorly understood or quantified. We coupled a one-dimensional physical model to a biogeochemical model to investigate the factors regulating short-term phytoplankton responses to summer wind events, now and under expected warmer future conditions. We simulated physical, chemical, and biological dynamics in Lake Erken, Sweden, and found that strong wind could increase or decrease the phytoplankton concentration in the euphotic zone 1 week after the event, depending on antecedent lake physical and chemical conditions. Wind had little effect on phytoplankton concentration if the mixed layer was deep prior to wind exposure. Higher incoming shortwave radiation and hypolimnetic nutrient concentration boosted phytoplankton concentration, whereas higher surface water temperatures decreased concentrations after wind events. Medium-intensity wind events resulted in more phytoplankton than high-intensity wind. Simulations under a future climate scenario did not show marked differences in the way wind events affect phytoplankton concentration. These findings help to better understand how wind impacts vary as a function of local environmental conditions and how climate warming and changing extreme weather dynamics will affect lake ecosystems.

Authors/Creators:Mesman, Jorrit P. and Ayala, Ana and Goyette, Stephane and Kasparian, Jerome and Marce, Rafael and Markensten, Hampus and Stelzer, Julio A. A. and Thayne, Michael W. and Thomas, Mridul K. and Pierson, Don C. and Ibelings, Bas W.
Title:Drivers of phytoplankton responses to summer wind events in a stratified lake: A modeling study
Series Name/Journal:Limnology and Oceanography
Year of publishing :2022
Volume:67
Number:4
Page range:856-873
Number of Pages:18
Publisher:WILEY
ISSN:0024-3590
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Oceanography, Hydrology, Water Resources
URN:NBN:urn:nbn:se:slu:epsilon-p-116285
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116285
Additional ID:
Type of IDID
DOI10.1002/lno.12040
Web of Science (WoS)000754307000001
ID Code:27570
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:19 Apr 2022 09:25
Metadata Last Modified:19 Apr 2022 09:31

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