Joint temporal trends in river discharge and temperature over the past 57 years in a large European basin: implications for diadromous fish
International audience Stream temperature and discharge are two fundamental triggers of key periods of the life cycle of aquatic organisms such as the migration of diadromous fish. However, the increase in stream temperature, more frequent and severe droughts, and asynchronous evolution of stream te...
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ftccsdartic:oai:HAL:hal-04148794v1 2024-02-11T10:02:10+01:00 Joint temporal trends in river discharge and temperature over the past 57 years in a large European basin: implications for diadromous fish Seyedhashemi, Hanieh Drouineau, Hilaire Maire, Anthony Moatar, Florentina RiverLy - Fonctionnement des hydrosystèmes (RiverLy) Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Ecosystèmes aquatiques et changements globaux (UR EABX) Laboratoire National d’Hydraulique et Environnement (EDF R&D LNHE) EDF R&D (EDF R&D) EDF (EDF)-EDF (EDF) Vienna, Austria 2023-04-23 https://hal.science/hal-04148794 https://hal.science/hal-04148794/document https://hal.science/hal-04148794/file/Poster_V4_%5BHanieh_SEYEDHASHEMI%5D.pdf https://doi.org/10.5194/egusphere-egu23-7598 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu23-7598 hal-04148794 https://hal.science/hal-04148794 https://hal.science/hal-04148794/document https://hal.science/hal-04148794/file/Poster_V4_%5BHanieh_SEYEDHASHEMI%5D.pdf doi:10.5194/egusphere-egu23-7598 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess The European Geosciences Union (EGU) https://hal.science/hal-04148794 The European Geosciences Union (EGU), Apr 2023, Vienna, Austria. 2023, ⟨10.5194/egusphere-egu23-7598⟩ climate change hydrological change water temperature temporal trends fish migration long-term large scale Loire basin [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDV.EE]Life Sciences [q-bio]/Ecology environment info:eu-repo/semantics/conferenceObject Conference poster 2023 ftccsdartic https://doi.org/10.5194/egusphere-egu23-7598 2024-01-21T00:03:05Z International audience Stream temperature and discharge are two fundamental triggers of key periods of the life cycle of aquatic organisms such as the migration of diadromous fish. However, the increase in stream temperature, more frequent and severe droughts, and asynchronous evolution of stream temperature and discharge due to climate change can modify the duration and frequency of favorable temperature-flow associations for the realization of species’ ecological processes. In this study, we investigated the influence of changes in favorable temperature-flow velocity associations for the upstream migration of Atlantic salmon, Alis shad and Sea lamprey at the scale of the Loire River basin (100000 km²). First, we used a physically-based thermal model (T-NET), coupled with a semi-distributed hydrological model (EROS) to reconstruct continuous daily times series over the 1963-2019 period (Seyedhashemi et al., 2022). Current velocity (V) was estimated using discharge through a hydraulic geometry model (Morel et al., 2020). We identified suitable water temperature-flow velocity associations for the migration of the three studied species based on (1) the literature and (2) observed migration recorded at fish passage stations. Using the “Choc method” (Arevalo et al., 2020), we then quantified the changes in frequency of occurrence of these suitable environmental windows over the past six decades across the hydrographic network of the Loire River basin. Our results showed that the greatest increases in stream temperature were associated with the greatest decreases in flow velocity over the past six decades. We also found that the frequency of suitable temperature-velocity associations for upstream migration of Atlantic salmon has significantly reduced, mainly in the southern part of the basin. In contrary, the frequency of suitable associations for upstream migration of the two other species has mainly increased. These results highlighted strong disparities in the consequence of global changes on fish migratory ... Conference Object Atlantic salmon Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Eros ENVELOPE(156.457,156.457,62.260,62.260) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
climate change hydrological change water temperature temporal trends fish migration long-term large scale Loire basin [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDV.EE]Life Sciences [q-bio]/Ecology environment |
spellingShingle |
climate change hydrological change water temperature temporal trends fish migration long-term large scale Loire basin [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDV.EE]Life Sciences [q-bio]/Ecology environment Seyedhashemi, Hanieh Drouineau, Hilaire Maire, Anthony Moatar, Florentina Joint temporal trends in river discharge and temperature over the past 57 years in a large European basin: implications for diadromous fish |
topic_facet |
climate change hydrological change water temperature temporal trends fish migration long-term large scale Loire basin [SDE]Environmental Sciences [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDV.EE]Life Sciences [q-bio]/Ecology environment |
description |
International audience Stream temperature and discharge are two fundamental triggers of key periods of the life cycle of aquatic organisms such as the migration of diadromous fish. However, the increase in stream temperature, more frequent and severe droughts, and asynchronous evolution of stream temperature and discharge due to climate change can modify the duration and frequency of favorable temperature-flow associations for the realization of species’ ecological processes. In this study, we investigated the influence of changes in favorable temperature-flow velocity associations for the upstream migration of Atlantic salmon, Alis shad and Sea lamprey at the scale of the Loire River basin (100000 km²). First, we used a physically-based thermal model (T-NET), coupled with a semi-distributed hydrological model (EROS) to reconstruct continuous daily times series over the 1963-2019 period (Seyedhashemi et al., 2022). Current velocity (V) was estimated using discharge through a hydraulic geometry model (Morel et al., 2020). We identified suitable water temperature-flow velocity associations for the migration of the three studied species based on (1) the literature and (2) observed migration recorded at fish passage stations. Using the “Choc method” (Arevalo et al., 2020), we then quantified the changes in frequency of occurrence of these suitable environmental windows over the past six decades across the hydrographic network of the Loire River basin. Our results showed that the greatest increases in stream temperature were associated with the greatest decreases in flow velocity over the past six decades. We also found that the frequency of suitable temperature-velocity associations for upstream migration of Atlantic salmon has significantly reduced, mainly in the southern part of the basin. In contrary, the frequency of suitable associations for upstream migration of the two other species has mainly increased. These results highlighted strong disparities in the consequence of global changes on fish migratory ... |
author2 |
RiverLy - Fonctionnement des hydrosystèmes (RiverLy) Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Ecosystèmes aquatiques et changements globaux (UR EABX) Laboratoire National d’Hydraulique et Environnement (EDF R&D LNHE) EDF R&D (EDF R&D) EDF (EDF)-EDF (EDF) |
format |
Conference Object |
author |
Seyedhashemi, Hanieh Drouineau, Hilaire Maire, Anthony Moatar, Florentina |
author_facet |
Seyedhashemi, Hanieh Drouineau, Hilaire Maire, Anthony Moatar, Florentina |
author_sort |
Seyedhashemi, Hanieh |
title |
Joint temporal trends in river discharge and temperature over the past 57 years in a large European basin: implications for diadromous fish |
title_short |
Joint temporal trends in river discharge and temperature over the past 57 years in a large European basin: implications for diadromous fish |
title_full |
Joint temporal trends in river discharge and temperature over the past 57 years in a large European basin: implications for diadromous fish |
title_fullStr |
Joint temporal trends in river discharge and temperature over the past 57 years in a large European basin: implications for diadromous fish |
title_full_unstemmed |
Joint temporal trends in river discharge and temperature over the past 57 years in a large European basin: implications for diadromous fish |
title_sort |
joint temporal trends in river discharge and temperature over the past 57 years in a large european basin: implications for diadromous fish |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04148794 https://hal.science/hal-04148794/document https://hal.science/hal-04148794/file/Poster_V4_%5BHanieh_SEYEDHASHEMI%5D.pdf https://doi.org/10.5194/egusphere-egu23-7598 |
op_coverage |
Vienna, Austria |
long_lat |
ENVELOPE(156.457,156.457,62.260,62.260) |
geographic |
Eros |
geographic_facet |
Eros |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
The European Geosciences Union (EGU) https://hal.science/hal-04148794 The European Geosciences Union (EGU), Apr 2023, Vienna, Austria. 2023, ⟨10.5194/egusphere-egu23-7598⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu23-7598 hal-04148794 https://hal.science/hal-04148794 https://hal.science/hal-04148794/document https://hal.science/hal-04148794/file/Poster_V4_%5BHanieh_SEYEDHASHEMI%5D.pdf doi:10.5194/egusphere-egu23-7598 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/egusphere-egu23-7598 |
_version_ |
1790598076117811200 |