Control of Non-migrating Bar Morphodynamics on Survival of Populus nigra Seedlings during Floods
Coraline Wintenberger
(1)
,
Stéphane Rodrigues
(1)
,
Sabine Greulich
(1)
,
Jean-Gabriel Bréhéret
(2)
,
P. Jugé
(3)
,
Michal Tal
(4)
,
Anthony Dubois
(5)
,
M. Villar
(5)
1
CITERES -
Cités, Territoires, Environnement et Sociétés
2 GéHCO EA6293 - GéoHydrosystèmes COntinentaux
3 UT - Université de Tours
4 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement
5 AGPF - Unité de recherche Amélioration, Génétique et Physiologie Forestières
2 GéHCO EA6293 - GéoHydrosystèmes COntinentaux
3 UT - Université de Tours
4 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement
5 AGPF - Unité de recherche Amélioration, Génétique et Physiologie Forestières
Stéphane Rodrigues
- Fonction : Auteur
- PersonId : 1146398
- ORCID : 0000-0002-5519-125X
Sabine Greulich
- Fonction : Auteur
- PersonId : 755984
- ORCID : 0000-0001-5678-6944
Jean-Gabriel Bréhéret
- Fonction : Auteur
- PersonId : 1295982
- IdRef : 083380892
Michal Tal
- Fonction : Auteur
- PersonId : 171695
- IdHAL : michal-tal
- IdRef : 169265358
Anthony Dubois
- Fonction : Auteur
- PersonId : 1204332
M. Villar
- Fonction : Auteur
- PersonId : 737043
- IdHAL : marc-villar
- ORCID : 0000-0001-9210-7072
- IdRef : 033339740
Résumé
Populus nigra seedling survival to flood stresses during their first stage of development was analyzed in the Loire River, France. We related bar dynamics (assessed from bathymetrical, topographical, flow velocity, scour chains, and sediment grain size surveys) to seedling survival. The study highlights (i) the influence of flood succession and flood stages on seedling survival after establishment, (ii) the spatial distribution of fluvial processes at the bar scale and their relative contribution to seedling mortality, (iii) threshold values for each process. At the bar scale, 28% of mortality is explained by uprooting associated with erosion of sediments. To a lesser extent, uprooting by drag force applied on the stems and burying by sediments also contribute to seedling mortality. The majority of seedling mortality is ultimately due to a combination of erosion and burial (50.6%) during flood events. The relative contribution of each process depends on the combination and phasing of erosion and deposition processes, sediment supply (quantity and grain size), and flow velocity governed by hydrological variations. Based on the results of this study we hypothesize that the survival of seedlings during floods may be a function of local processes involved in bar dynamics.
Domaines
Etudes de l'environnementFormat du dépôt | Notice |
---|---|
Type de dépôt | Article dans une revue |
Résumé |
en
Populus nigra seedling survival to flood stresses during their first stage of development was analyzed in the Loire River, France. We related bar dynamics (assessed from bathymetrical, topographical, flow velocity, scour chains, and sediment grain size surveys) to seedling survival. The study highlights (i) the influence of flood succession and flood stages on seedling survival after establishment, (ii) the spatial distribution of fluvial processes at the bar scale and their relative contribution to seedling mortality, (iii) threshold values for each process. At the bar scale, 28% of mortality is explained by uprooting associated with erosion of sediments. To a lesser extent, uprooting by drag force applied on the stems and burying by sediments also contribute to seedling mortality. The majority of seedling mortality is ultimately due to a combination of erosion and burial (50.6%) during flood events. The relative contribution of each process depends on the combination and phasing of erosion and deposition processes, sediment supply (quantity and grain size), and flow velocity governed by hydrological variations. Based on the results of this study we hypothesize that the survival of seedlings during floods may be a function of local processes involved in bar dynamics.
|
Titre |
en
Control of Non-migrating Bar Morphodynamics on Survival of Populus nigra Seedlings during Floods
|
Auteur(s) |
Coraline Wintenberger
1
, Stéphane Rodrigues
1
, Sabine Greulich
1
, Jean-Gabriel Bréhéret
2
, P. Jugé
3
, Michal Tal
4
, Anthony Dubois
5
, M. Villar
5
1
CITERES -
Cités, Territoires, Environnement et Sociétés
( 199947 )
- 33 allée Ferdinand de Lesseps BP 60449 37204 Tours cedex 3
- France
2
GéHCO EA6293 -
GéoHydrosystèmes COntinentaux
( 210715 )
- Faculté des sciences et techniques bâtiment E Parc Grandmont 37200 TOURS
- France
3
UT -
Université de Tours
( 300298 )
- 60 rue du Plat d'Étain, 37020 Tours cedex 1
- France
4
CEREGE -
Centre européen de recherche et d'enseignement des géosciences de l'environnement
( 199954 )
- Europôle Méditerranéen de l'Arbois - Avenue Louis Philibert - BP 80 - 13545 Aix-en-Provence cedex 4
- France
5
AGPF -
Unité de recherche Amélioration, Génétique et Physiologie Forestières
( 37726 )
- 2163 Avenue de la Pomme de Pin, CS4001 - Ardon, 45075 Orléans Cedex 2
- France
|
Sous-type de document pour les Articles |
Research article
|
Page/Identifiant |
275-290
|
Nom de la revue |
|
Langue du document |
Anglais
|
Comité de lecture |
Oui
|
Vulgarisation |
Non
|
Numéro |
2
|
Audience |
Internationale
|
Date de publication |
2019
|
URL éditeur |
https://link.springer.com/journal/13157/39/2/page/1
|
Public visé |
Scientifique
|
Date de publication électronique |
2019-01-21
|
Volume |
39
|
Indexation contrôlée |
|
Domaine(s) |
|
Voir aussi |
|
Mots-clés |
en
Seedlings, Non-migrating bar, Uprooting, Burial, Riparian vegetation
|
DOI | 10.1007/s13157-018-1121-7 |
ProdINRA | 471466 |
UT key WOS | 000466512100006 |
Loading...