Surface light modulation by sea ice and phytoplankton survival in a convective flow model
International audience Plankton dynamics depend in a complex manner on a variety of physical phenomena, according to both experimental and numerical data. In particular, experimental field studies have highlighted the relation between phytoplankton survival and turbulent upwelling and downwelling fr...
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Online Access: | https://hal.science/hal-03921358 https://hal.science/hal-03921358/document https://hal.science/hal-03921358/file/TCMB_Arxiv2022.pdf https://doi.org/10.1140/epjp/s13360-022-03586-7 |
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ftunivlille:oai:HAL:hal-03921358v1 2024-06-23T07:56:44+00:00 Surface light modulation by sea ice and phytoplankton survival in a convective flow model Tergolina, Vinicius, Beltram Calzavarini, Enrico Mompean, Gilmar Berti, Stefano Unité de Mécanique de Lille - ULR 7512 (UML) Université de Lille 2022-12-30 https://hal.science/hal-03921358 https://hal.science/hal-03921358/document https://hal.science/hal-03921358/file/TCMB_Arxiv2022.pdf https://doi.org/10.1140/epjp/s13360-022-03586-7 en eng HAL CCSD Springer info:eu-repo/semantics/altIdentifier/doi/10.1140/epjp/s13360-022-03586-7 hal-03921358 https://hal.science/hal-03921358 https://hal.science/hal-03921358/document https://hal.science/hal-03921358/file/TCMB_Arxiv2022.pdf doi:10.1140/epjp/s13360-022-03586-7 info:eu-repo/semantics/OpenAccess ISSN: 2190-5444 The European Physical Journal Plus https://hal.science/hal-03921358 The European Physical Journal Plus, 2022, 137, ⟨10.1140/epjp/s13360-022-03586-7⟩ [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] info:eu-repo/semantics/article Journal articles 2022 ftunivlille https://doi.org/10.1140/epjp/s13360-022-03586-7 2024-06-10T14:46:25Z International audience Plankton dynamics depend in a complex manner on a variety of physical phenomena, according to both experimental and numerical data. In particular, experimental field studies have highlighted the relation between phytoplankton survival and turbulent upwelling and downwelling from thermal convection. Recent numerical works have also shown the importance of accounting for advective transport by persistent structures in simulation models. In nutrient-rich polar marine environments phytoplankton blooms are critically limited by light availability under ice-covered waters. Such heterogeneity of the light intensity distribution, in association with a large-scale coherent fluid flow, can give rise to nontrivial growth dynamics. In this work we extend a previous advectionreaction-diffusion model of phytoplankton light-limited vertical dynamics in the presence of convective transport. Specifically, we consider horizontally heterogeneous light conditions through the use of two regions with different production regimes, modelling the absence (presence) of light under (in between) obstacles. Such a model is intended as an idealized representation of nonuniformly icecovered polar waters. By means of numerical simulations, we find that the main role of advective transport is to hinder phytoplankton growth, but also that such effect depends on the positions of the obstacles with respect to the upwelling and downwelling flow regions. Furthermore, we show that the sinking speed due to the density difference between phytoplankton organisms and water, while small, plays an important role, which depends on how it adds to the flow. These results indicate that advective transport can have a crucial impact on the survival conditions of sinking phytoplankton species in polar environments. Article in Journal/Newspaper Sea ice ice covered waters LillOA (HAL Lille Open Archive, Université de Lille) The European Physical Journal Plus 137 12 |
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Open Polar |
collection |
LillOA (HAL Lille Open Archive, Université de Lille) |
op_collection_id |
ftunivlille |
language |
English |
topic |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] |
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[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] Tergolina, Vinicius, Beltram Calzavarini, Enrico Mompean, Gilmar Berti, Stefano Surface light modulation by sea ice and phytoplankton survival in a convective flow model |
topic_facet |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] |
description |
International audience Plankton dynamics depend in a complex manner on a variety of physical phenomena, according to both experimental and numerical data. In particular, experimental field studies have highlighted the relation between phytoplankton survival and turbulent upwelling and downwelling from thermal convection. Recent numerical works have also shown the importance of accounting for advective transport by persistent structures in simulation models. In nutrient-rich polar marine environments phytoplankton blooms are critically limited by light availability under ice-covered waters. Such heterogeneity of the light intensity distribution, in association with a large-scale coherent fluid flow, can give rise to nontrivial growth dynamics. In this work we extend a previous advectionreaction-diffusion model of phytoplankton light-limited vertical dynamics in the presence of convective transport. Specifically, we consider horizontally heterogeneous light conditions through the use of two regions with different production regimes, modelling the absence (presence) of light under (in between) obstacles. Such a model is intended as an idealized representation of nonuniformly icecovered polar waters. By means of numerical simulations, we find that the main role of advective transport is to hinder phytoplankton growth, but also that such effect depends on the positions of the obstacles with respect to the upwelling and downwelling flow regions. Furthermore, we show that the sinking speed due to the density difference between phytoplankton organisms and water, while small, plays an important role, which depends on how it adds to the flow. These results indicate that advective transport can have a crucial impact on the survival conditions of sinking phytoplankton species in polar environments. |
author2 |
Unité de Mécanique de Lille - ULR 7512 (UML) Université de Lille |
format |
Article in Journal/Newspaper |
author |
Tergolina, Vinicius, Beltram Calzavarini, Enrico Mompean, Gilmar Berti, Stefano |
author_facet |
Tergolina, Vinicius, Beltram Calzavarini, Enrico Mompean, Gilmar Berti, Stefano |
author_sort |
Tergolina, Vinicius, Beltram |
title |
Surface light modulation by sea ice and phytoplankton survival in a convective flow model |
title_short |
Surface light modulation by sea ice and phytoplankton survival in a convective flow model |
title_full |
Surface light modulation by sea ice and phytoplankton survival in a convective flow model |
title_fullStr |
Surface light modulation by sea ice and phytoplankton survival in a convective flow model |
title_full_unstemmed |
Surface light modulation by sea ice and phytoplankton survival in a convective flow model |
title_sort |
surface light modulation by sea ice and phytoplankton survival in a convective flow model |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03921358 https://hal.science/hal-03921358/document https://hal.science/hal-03921358/file/TCMB_Arxiv2022.pdf https://doi.org/10.1140/epjp/s13360-022-03586-7 |
genre |
Sea ice ice covered waters |
genre_facet |
Sea ice ice covered waters |
op_source |
ISSN: 2190-5444 The European Physical Journal Plus https://hal.science/hal-03921358 The European Physical Journal Plus, 2022, 137, ⟨10.1140/epjp/s13360-022-03586-7⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1140/epjp/s13360-022-03586-7 hal-03921358 https://hal.science/hal-03921358 https://hal.science/hal-03921358/document https://hal.science/hal-03921358/file/TCMB_Arxiv2022.pdf doi:10.1140/epjp/s13360-022-03586-7 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1140/epjp/s13360-022-03586-7 |
container_title |
The European Physical Journal Plus |
container_volume |
137 |
container_issue |
12 |
_version_ |
1802650035585810432 |