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The impacts of extreme climate on summer-stratified temperate lakes: Lake Søholm, Denmark, as an example

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The impacts of extreme climate on summer-stratified temperate lakes : Lake Søholm, Denmark, as an example. / Chou, Qingchuan; Nielsen, Anders; Andersen, Tobias K.; Hu, Fenjuan; Chen, Weiyu; Cao, Te; Ni, Leyi; Søndergaard, Martin; Johansson, Liselotte S.; Jeppesen, Erik; Trolle, Dennis.

I: Hydrobiologia, Bind 848, Nr. 15, 09.2021, s. 3521-3537.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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@article{1f1fc4b859114d5b9a4b4d8906194e24,
title = "The impacts of extreme climate on summer-stratified temperate lakes: Lake S{\o}holm, Denmark, as an example",
abstract = "The global surface temperature has increased by about 0.74°C over the past 100 years, and the frequency of extreme weather has increased as well. We used the state-of-the-art complex, dynamic, mechanistic model GOTM-FABM-PCLake to quantify the impacts of extreme summer warming on a summer-stratified temperate Danish lake. Simulated values of all calibrated parameters (water temperature, DO, NO3, NH4, TN, PO4, TP and Chl.-a) agreed well with observed values over the whole calibration and validation period and generally exhibited the same seasonal dynamics and inter-annual variations as the monitoring data. A series of climate scenarios with different summer heat wave frequencies and duration were set up to quantify the effects on the ecosystem state of the lake. Our simulations showed that summer surface mean TN will decrease with rising summer heat wave frequencies, while summer surface mean TP and Chl.-a and the biomass and proportion of cyanobacteria will increase. Following a summer heat wave, the lake approached baseline conditions in the autumn, but with increasing frequency of heatwaves the recovery period increased. Our results suggest that compliance with existing legislation, such as EU{\textquoteright}s Water Framework Directive, will become increasingly challenging in a future scenario with increased temperatures and more frequent heatwaves.",
keywords = "Aquatic biogeochemical model, Extreme climate, FABM-PCLake, Heat wave, Hydrodynamic model, Stratified lake",
author = "Qingchuan Chou and Anders Nielsen and Andersen, {Tobias K.} and Fenjuan Hu and Weiyu Chen and Te Cao and Leyi Ni and Martin S{\o}ndergaard and Johansson, {Liselotte S.} and Erik Jeppesen and Dennis Trolle",
note = "Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.",
year = "2021",
month = sep,
doi = "10.1007/s10750-021-04607-9",
language = "English",
volume = "848",
pages = "3521--3537",
journal = "Journal of Applied Phycology",
issn = "0921-8971",
publisher = "Springer",
number = "15",

}

RIS

TY - JOUR

T1 - The impacts of extreme climate on summer-stratified temperate lakes

T2 - Lake Søholm, Denmark, as an example

AU - Chou, Qingchuan

AU - Nielsen, Anders

AU - Andersen, Tobias K.

AU - Hu, Fenjuan

AU - Chen, Weiyu

AU - Cao, Te

AU - Ni, Leyi

AU - Søndergaard, Martin

AU - Johansson, Liselotte S.

AU - Jeppesen, Erik

AU - Trolle, Dennis

N1 - Publisher Copyright: © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

PY - 2021/9

Y1 - 2021/9

N2 - The global surface temperature has increased by about 0.74°C over the past 100 years, and the frequency of extreme weather has increased as well. We used the state-of-the-art complex, dynamic, mechanistic model GOTM-FABM-PCLake to quantify the impacts of extreme summer warming on a summer-stratified temperate Danish lake. Simulated values of all calibrated parameters (water temperature, DO, NO3, NH4, TN, PO4, TP and Chl.-a) agreed well with observed values over the whole calibration and validation period and generally exhibited the same seasonal dynamics and inter-annual variations as the monitoring data. A series of climate scenarios with different summer heat wave frequencies and duration were set up to quantify the effects on the ecosystem state of the lake. Our simulations showed that summer surface mean TN will decrease with rising summer heat wave frequencies, while summer surface mean TP and Chl.-a and the biomass and proportion of cyanobacteria will increase. Following a summer heat wave, the lake approached baseline conditions in the autumn, but with increasing frequency of heatwaves the recovery period increased. Our results suggest that compliance with existing legislation, such as EU’s Water Framework Directive, will become increasingly challenging in a future scenario with increased temperatures and more frequent heatwaves.

AB - The global surface temperature has increased by about 0.74°C over the past 100 years, and the frequency of extreme weather has increased as well. We used the state-of-the-art complex, dynamic, mechanistic model GOTM-FABM-PCLake to quantify the impacts of extreme summer warming on a summer-stratified temperate Danish lake. Simulated values of all calibrated parameters (water temperature, DO, NO3, NH4, TN, PO4, TP and Chl.-a) agreed well with observed values over the whole calibration and validation period and generally exhibited the same seasonal dynamics and inter-annual variations as the monitoring data. A series of climate scenarios with different summer heat wave frequencies and duration were set up to quantify the effects on the ecosystem state of the lake. Our simulations showed that summer surface mean TN will decrease with rising summer heat wave frequencies, while summer surface mean TP and Chl.-a and the biomass and proportion of cyanobacteria will increase. Following a summer heat wave, the lake approached baseline conditions in the autumn, but with increasing frequency of heatwaves the recovery period increased. Our results suggest that compliance with existing legislation, such as EU’s Water Framework Directive, will become increasingly challenging in a future scenario with increased temperatures and more frequent heatwaves.

KW - Aquatic biogeochemical model

KW - Extreme climate

KW - FABM-PCLake

KW - Heat wave

KW - Hydrodynamic model

KW - Stratified lake

UR - http://www.scopus.com/inward/record.url?scp=85105490132&partnerID=8YFLogxK

U2 - 10.1007/s10750-021-04607-9

DO - 10.1007/s10750-021-04607-9

M3 - Journal article

AN - SCOPUS:85105490132

VL - 848

SP - 3521

EP - 3537

JO - Journal of Applied Phycology

JF - Journal of Applied Phycology

SN - 0921-8971

IS - 15

ER -