Community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project
International audience Invasive alien species are one of the most important threats on biodiversity worldwide. The ability of exotic plants to colonize and dominate disturbed or post-disturbance areas gives them a crucial advantage. Once established they are hard to remove which can threaten the suc...
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ftccsdartic:oai:HAL:hal-02608516v1 2023-05-15T16:52:16+02:00 Community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project Assemblage des communautés et résistance à l'invasion : le rôle de l'effet de priorité et de la composition des semis dans un projet de restauration Dommanget, Françoise Jaunatre, Renaud Triqueneaux, M. Abdulhak, S. Vallée, Sophie Huygue, G. Jacob, F. Evette, André Laboratoire des EcoSystèmes et des Sociétés en Montagne (UR LESSEM) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) CONSERVATOIRE BOTANIQUE NATIONAL ALPIN GAP FRA Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) BIOTEC LYON FRA EDF (EDF) REYKJAVIK, Iceland 2018-09-09 https://hal.inrae.fr/hal-02608516 en eng HAL CCSD hal-02608516 https://hal.inrae.fr/hal-02608516 IRSTEA: PUB00059925 SER Europe conference 2018: Restoration in the Era of Climate Change https://hal.inrae.fr/hal-02608516 SER Europe conference 2018: Restoration in the Era of Climate Change, Sep 2018, REYKJAVIK, Iceland. pp.1 ALPES FRANCAISES [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference papers 2018 ftccsdartic 2021-09-11T23:45:49Z International audience Invasive alien species are one of the most important threats on biodiversity worldwide. The ability of exotic plants to colonize and dominate disturbed or post-disturbance areas gives them a crucial advantage. Once established they are hard to remove which can threaten the success of ecological restoration operations. Several mechanisms have been proposed to explain the success of exotic plants. In particular, biotic interactions are supposed to be involved in the containment of their development. Locally, competition for resources and space can limit the recruitment and the growth of invasive plants, both at the very early stage of propagule establishment through priority effects and also all over their growth through direct competition. Ecological restoration projects are implicitly based on these mechanisms as seeding and planting operations aim at better controlling restoration trajectories and final community composition. However it is hard to disentangle the two effects (priority and direct competition for resources) on community assemblage and particularly on resistance to invasion although they are crucial to better design restoration operations. We set up a field experiment aiming at studying the priority effect and the effect of the composition of seeding in a real restoration context. Experimental plots of 2*2m have been set along a deeply modified riverbank in the French Alps for hydraulic development purposes. We tested two densities and three seed mixes in order to study the effects of seeding composition and competition intensity. Ploughing was used to delay soil seed bank expression compared to seeding and as such to cancel its priority effects. We compared community composition and structure between treatments with a particular focus on invasive plants. Here we present the results after two growing seasons. Conference Object Iceland Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
ALPES FRANCAISES [SDE]Environmental Sciences |
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ALPES FRANCAISES [SDE]Environmental Sciences Dommanget, Françoise Jaunatre, Renaud Triqueneaux, M. Abdulhak, S. Vallée, Sophie Huygue, G. Jacob, F. Evette, André Community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project |
topic_facet |
ALPES FRANCAISES [SDE]Environmental Sciences |
description |
International audience Invasive alien species are one of the most important threats on biodiversity worldwide. The ability of exotic plants to colonize and dominate disturbed or post-disturbance areas gives them a crucial advantage. Once established they are hard to remove which can threaten the success of ecological restoration operations. Several mechanisms have been proposed to explain the success of exotic plants. In particular, biotic interactions are supposed to be involved in the containment of their development. Locally, competition for resources and space can limit the recruitment and the growth of invasive plants, both at the very early stage of propagule establishment through priority effects and also all over their growth through direct competition. Ecological restoration projects are implicitly based on these mechanisms as seeding and planting operations aim at better controlling restoration trajectories and final community composition. However it is hard to disentangle the two effects (priority and direct competition for resources) on community assemblage and particularly on resistance to invasion although they are crucial to better design restoration operations. We set up a field experiment aiming at studying the priority effect and the effect of the composition of seeding in a real restoration context. Experimental plots of 2*2m have been set along a deeply modified riverbank in the French Alps for hydraulic development purposes. We tested two densities and three seed mixes in order to study the effects of seeding composition and competition intensity. Ploughing was used to delay soil seed bank expression compared to seeding and as such to cancel its priority effects. We compared community composition and structure between treatments with a particular focus on invasive plants. Here we present the results after two growing seasons. |
author2 |
Laboratoire des EcoSystèmes et des Sociétés en Montagne (UR LESSEM) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) CONSERVATOIRE BOTANIQUE NATIONAL ALPIN GAP FRA Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) BIOTEC LYON FRA EDF (EDF) |
format |
Conference Object |
author |
Dommanget, Françoise Jaunatre, Renaud Triqueneaux, M. Abdulhak, S. Vallée, Sophie Huygue, G. Jacob, F. Evette, André |
author_facet |
Dommanget, Françoise Jaunatre, Renaud Triqueneaux, M. Abdulhak, S. Vallée, Sophie Huygue, G. Jacob, F. Evette, André |
author_sort |
Dommanget, Françoise |
title |
Community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project |
title_short |
Community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project |
title_full |
Community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project |
title_fullStr |
Community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project |
title_full_unstemmed |
Community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project |
title_sort |
community assemblage and resistance to invasion: the role of priority effect and seeding composition in a restoration project |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.inrae.fr/hal-02608516 |
op_coverage |
REYKJAVIK, Iceland |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
SER Europe conference 2018: Restoration in the Era of Climate Change https://hal.inrae.fr/hal-02608516 SER Europe conference 2018: Restoration in the Era of Climate Change, Sep 2018, REYKJAVIK, Iceland. pp.1 |
op_relation |
hal-02608516 https://hal.inrae.fr/hal-02608516 IRSTEA: PUB00059925 |
_version_ |
1766042412306661376 |