Surface light modulation by sea ice and phytoplankton survival in a convective flow model
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....
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ftunivlilleoa:oai:lilloa.univ-lille.fr:20.500.12210/93160 2024-01-14T10:10:38+01:00 Surface light modulation by sea ice and phytoplankton survival in a convective flow model Tergolina, Vinicius Calzavarini (admin), Enrico Mompean, Gilmar Berti, Stefano Unité de Mécanique de Lille - ULR 7512 UML 2022-12-30 application/octet-stream https://hdl.handle.net/20.500.12210/93160 Anglais eng Springer 10.1140/epjp/s13360-022-03586-7 The European Physical Journal Plus http://hdl.handle.net/20.500.12210/93160 info:eu-repo/semantics/openAccess Compte-rendu et recension critique d'ouvrage 2022 ftunivlilleoa https://doi.org/20.500.12210/93160 2023-12-20T17:11:22Z 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. 137 Other/Unknown Material Sea ice ice covered waters LillOA (Lille Open Archive - Université de Lille) |
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Open Polar |
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LillOA (Lille Open Archive - Université de Lille) |
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ftunivlilleoa |
language |
English |
description |
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. 137 |
author2 |
Unité de Mécanique de Lille - ULR 7512 UML |
format |
Other/Unknown Material |
author |
Tergolina, Vinicius Calzavarini (admin), Enrico Mompean, Gilmar Berti, Stefano |
spellingShingle |
Tergolina, Vinicius Calzavarini (admin), Enrico Mompean, Gilmar Berti, Stefano Surface light modulation by sea ice and phytoplankton survival in a convective flow model |
author_facet |
Tergolina, Vinicius Calzavarini (admin), Enrico Mompean, Gilmar Berti, Stefano |
author_sort |
Tergolina, Vinicius |
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 |
Springer |
publishDate |
2022 |
url |
https://hdl.handle.net/20.500.12210/93160 |
genre |
Sea ice ice covered waters |
genre_facet |
Sea ice ice covered waters |
op_relation |
10.1140/epjp/s13360-022-03586-7 The European Physical Journal Plus http://hdl.handle.net/20.500.12210/93160 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.12210/93160 |
_version_ |
1788065411041853440 |