Microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit
International audience Alpine environments are currently relatively free from non‐native plant species, although their presence and abundance have recently been on the rise. It is however still unclear whether the observed low invasion levels in these areas are due to an inherent resistance of the a...
Published in: | Ecography |
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2018
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Online Access: | https://hal.science/hal-02352604 https://hal.science/hal-02352604/document https://hal.science/hal-02352604/file/Lembrechts_al_2018_Ecography.pdf https://doi.org/10.1111/ecog.03263 |
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ftunivpicardie:oai:HAL:hal-02352604v1 2024-06-23T07:57:02+00:00 Microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit Lembrechts, Jonas Lenoir, Jonathan, Roger Michel Henri Nuñez, Martin Pauchard, Aníbal Geron, Charly Bussé, Gilles Milbau, Ann Nijs, Ivan University of Antwerp (UA) Ecologie et Dynamique des Systèmes Anthropisés - UMR CNRS 7058 UPJV (EDYSAN) Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS) Universidad Nacional del Comahue Neuquén (UNCOMA) Universidad de Concepción = University of Concepción Chile (UdeC) 2018 https://hal.science/hal-02352604 https://hal.science/hal-02352604/document https://hal.science/hal-02352604/file/Lembrechts_al_2018_Ecography.pdf https://doi.org/10.1111/ecog.03263 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/ecog.03263 hal-02352604 https://hal.science/hal-02352604 https://hal.science/hal-02352604/document https://hal.science/hal-02352604/file/Lembrechts_al_2018_Ecography.pdf doi:10.1111/ecog.03263 info:eu-repo/semantics/OpenAccess EISSN: 1600-0587 Ecography https://hal.science/hal-02352604 Ecography, 2018, 41 (6), pp.900-909. ⟨10.1111/ecog.03263⟩ https://onlinelibrary.wiley.com/doi/abs/10.1111/ecog.03263 Alien plant invaders climate change disturbance invasibility invasive species mountain topography species distributions subarctic [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDE.MCG]Environmental Sciences/Global Changes [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2018 ftunivpicardie https://doi.org/10.1111/ecog.03263 2024-06-13T23:32:39Z International audience Alpine environments are currently relatively free from non‐native plant species, although their presence and abundance have recently been on the rise. It is however still unclear whether the observed low invasion levels in these areas are due to an inherent resistance of the alpine zone to invasions or whether an exponential increase in invasion is just a matter of time. Using a seed‐addition experiment on north‐ and south‐facing slopes (cf. microclimatic gradient) on two mountains in subarctic Sweden, we tested the establishment of six non‐native species at an elevation above their current distribution limits and under experimentally enhanced anthropogenic pressures (disturbance, added nutrients and increased propagule pressure). We found a large microclimatic variability in cumulative growing degree days (GDD) (range = 500.77°C, SD = 120.70°C) due to both physiographic (e.g. aspect) and biophysical (e.g. vegetation cover) features, the latter being altered by the experimental disturbance. Non‐native species establishment and biomass production were positively correlated with GDD along the studied microclimatic gradient. However, even though establishment on the north‐facing slopes caught up with that on the south‐facing slopes throughout the growing season, biomass production was limited on the north‐facing slopes due to a shorter growing season. On top of this microclimatic effect, all experimentally imposed anthropogenic factors enhanced non‐native species success. The observed microclimatic effect indicates a potential for non‐native species to use warm microsites as stepping stones for their establishment towards the cold end of the gradient. Combined with anthropogenic pressures this result suggests an increasing risk for plant invasion in cold ecosystems, as such stepping stones in alpine ecosystems are likely to be more common in a future that will combine a warming climate with persistent anthropogenic pressures. Article in Journal/Newspaper Subarctic Stepping Stones Université de Picardie Jules Verne Stepping Stones ENVELOPE(-63.992,-63.992,-64.786,-64.786) Ecography 41 6 900 909 |
institution |
Open Polar |
collection |
Université de Picardie Jules Verne |
op_collection_id |
ftunivpicardie |
language |
English |
topic |
Alien plant invaders climate change disturbance invasibility invasive species mountain topography species distributions subarctic [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDE.MCG]Environmental Sciences/Global Changes [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Alien plant invaders climate change disturbance invasibility invasive species mountain topography species distributions subarctic [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDE.MCG]Environmental Sciences/Global Changes [SDE.BE]Environmental Sciences/Biodiversity and Ecology Lembrechts, Jonas Lenoir, Jonathan, Roger Michel Henri Nuñez, Martin Pauchard, Aníbal Geron, Charly Bussé, Gilles Milbau, Ann Nijs, Ivan Microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit |
topic_facet |
Alien plant invaders climate change disturbance invasibility invasive species mountain topography species distributions subarctic [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDE.MCG]Environmental Sciences/Global Changes [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Alpine environments are currently relatively free from non‐native plant species, although their presence and abundance have recently been on the rise. It is however still unclear whether the observed low invasion levels in these areas are due to an inherent resistance of the alpine zone to invasions or whether an exponential increase in invasion is just a matter of time. Using a seed‐addition experiment on north‐ and south‐facing slopes (cf. microclimatic gradient) on two mountains in subarctic Sweden, we tested the establishment of six non‐native species at an elevation above their current distribution limits and under experimentally enhanced anthropogenic pressures (disturbance, added nutrients and increased propagule pressure). We found a large microclimatic variability in cumulative growing degree days (GDD) (range = 500.77°C, SD = 120.70°C) due to both physiographic (e.g. aspect) and biophysical (e.g. vegetation cover) features, the latter being altered by the experimental disturbance. Non‐native species establishment and biomass production were positively correlated with GDD along the studied microclimatic gradient. However, even though establishment on the north‐facing slopes caught up with that on the south‐facing slopes throughout the growing season, biomass production was limited on the north‐facing slopes due to a shorter growing season. On top of this microclimatic effect, all experimentally imposed anthropogenic factors enhanced non‐native species success. The observed microclimatic effect indicates a potential for non‐native species to use warm microsites as stepping stones for their establishment towards the cold end of the gradient. Combined with anthropogenic pressures this result suggests an increasing risk for plant invasion in cold ecosystems, as such stepping stones in alpine ecosystems are likely to be more common in a future that will combine a warming climate with persistent anthropogenic pressures. |
author2 |
University of Antwerp (UA) Ecologie et Dynamique des Systèmes Anthropisés - UMR CNRS 7058 UPJV (EDYSAN) Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS) Universidad Nacional del Comahue Neuquén (UNCOMA) Universidad de Concepción = University of Concepción Chile (UdeC) |
format |
Article in Journal/Newspaper |
author |
Lembrechts, Jonas Lenoir, Jonathan, Roger Michel Henri Nuñez, Martin Pauchard, Aníbal Geron, Charly Bussé, Gilles Milbau, Ann Nijs, Ivan |
author_facet |
Lembrechts, Jonas Lenoir, Jonathan, Roger Michel Henri Nuñez, Martin Pauchard, Aníbal Geron, Charly Bussé, Gilles Milbau, Ann Nijs, Ivan |
author_sort |
Lembrechts, Jonas |
title |
Microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit |
title_short |
Microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit |
title_full |
Microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit |
title_fullStr |
Microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit |
title_full_unstemmed |
Microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit |
title_sort |
microclimate variability in alpine ecosystems as stepping stones for non-native plant establishment above their current elevational limit |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02352604 https://hal.science/hal-02352604/document https://hal.science/hal-02352604/file/Lembrechts_al_2018_Ecography.pdf https://doi.org/10.1111/ecog.03263 |
long_lat |
ENVELOPE(-63.992,-63.992,-64.786,-64.786) |
geographic |
Stepping Stones |
geographic_facet |
Stepping Stones |
genre |
Subarctic Stepping Stones |
genre_facet |
Subarctic Stepping Stones |
op_source |
EISSN: 1600-0587 Ecography https://hal.science/hal-02352604 Ecography, 2018, 41 (6), pp.900-909. ⟨10.1111/ecog.03263⟩ https://onlinelibrary.wiley.com/doi/abs/10.1111/ecog.03263 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/ecog.03263 hal-02352604 https://hal.science/hal-02352604 https://hal.science/hal-02352604/document https://hal.science/hal-02352604/file/Lembrechts_al_2018_Ecography.pdf doi:10.1111/ecog.03263 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1111/ecog.03263 |
container_title |
Ecography |
container_volume |
41 |
container_issue |
6 |
container_start_page |
900 |
op_container_end_page |
909 |
_version_ |
1802650472608169984 |