Drivers of Alpine Mire Vegetation at Their Range Limit

Mires are fragile ecosystems in which plant communities are structured by complex interactions among hydrological regimes and groundwater properties. Although extensively studied in boreal and temperate regions, their environmental drivers in southern European mountains remain poorly understood. We...

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Autores: Pérez Haase, Aaron, Ninot i Sugrañes, Josep Maria
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/223758
Acceso en línea:https://hdl.handle.net/2445/223758
Access Level:acceso abierto
Palabra clave:Pirineus
Zones humides
Aiguamolls
Pyrenees
Wetlands
Marshes
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spelling Drivers of Alpine Mire Vegetation at Their Range LimitPérez Haase, AaronNinot i Sugrañes, Josep MariaPirineusZones humidesAiguamollsPyreneesWetlandsMarshesMires are fragile ecosystems in which plant communities are structured by complex interactions among hydrological regimes and groundwater properties. Although extensively studied in boreal and temperate regions, their environmental drivers in southern European mountains remain poorly understood. We investigated five complex mires in the Pyrenees, sampling 156 plots of vascular plants and bryophytes while measuring water table dynamics and groundwater chemistry over two years. Vegetation was classified into six main groups, including acid and alkaline fens, transition mires and Sphagnum hummocks. Ordination analyses (tb-PCA and RDA) revealed that mean water table depth, groundwater calcium and silicon content, and pH were the most important determinants of floristic composition. Bryophytes responded primarily to pH, whereas vascular plants were more influenced by water table variables, reflecting functional trait differences. Despite these environmental effects, spatial structure explained a comparable or greater proportion of variance, especially for vascular plants, underscoring the roles of local species pools, dispersal limitation, and site history in shaping community patterns. Establishing a reliable baseline is crucial for interpreting the distribution patterns of mire vegetation. Our results demonstrate that both environmental gradients and spatial processes are fundamental to understanding mire vegetation and highlight the importance of analyzing plant taxonomic groups separately.MDPI2025202520252025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion23 p.application/pdfhttps://hdl.handle.net/2445/223758Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.3390/d17100702Diversity, 2025, vol. 17, num.10, p. 1-23https://doi.org/10.3390/d17100702cc-by (c) Pérez-Haase, Aaron et al., 2025http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2237582026-05-29T05:05:01Z
dc.title.none.fl_str_mv Drivers of Alpine Mire Vegetation at Their Range Limit
title Drivers of Alpine Mire Vegetation at Their Range Limit
spellingShingle Drivers of Alpine Mire Vegetation at Their Range Limit
Pérez Haase, Aaron
Pirineus
Zones humides
Aiguamolls
Pyrenees
Wetlands
Marshes
title_short Drivers of Alpine Mire Vegetation at Their Range Limit
title_full Drivers of Alpine Mire Vegetation at Their Range Limit
title_fullStr Drivers of Alpine Mire Vegetation at Their Range Limit
title_full_unstemmed Drivers of Alpine Mire Vegetation at Their Range Limit
title_sort Drivers of Alpine Mire Vegetation at Their Range Limit
dc.creator.none.fl_str_mv Pérez Haase, Aaron
Ninot i Sugrañes, Josep Maria
author Pérez Haase, Aaron
author_facet Pérez Haase, Aaron
Ninot i Sugrañes, Josep Maria
author_role author
author2 Ninot i Sugrañes, Josep Maria
author2_role author
dc.subject.none.fl_str_mv Pirineus
Zones humides
Aiguamolls
Pyrenees
Wetlands
Marshes
topic Pirineus
Zones humides
Aiguamolls
Pyrenees
Wetlands
Marshes
description Mires are fragile ecosystems in which plant communities are structured by complex interactions among hydrological regimes and groundwater properties. Although extensively studied in boreal and temperate regions, their environmental drivers in southern European mountains remain poorly understood. We investigated five complex mires in the Pyrenees, sampling 156 plots of vascular plants and bryophytes while measuring water table dynamics and groundwater chemistry over two years. Vegetation was classified into six main groups, including acid and alkaline fens, transition mires and Sphagnum hummocks. Ordination analyses (tb-PCA and RDA) revealed that mean water table depth, groundwater calcium and silicon content, and pH were the most important determinants of floristic composition. Bryophytes responded primarily to pH, whereas vascular plants were more influenced by water table variables, reflecting functional trait differences. Despite these environmental effects, spatial structure explained a comparable or greater proportion of variance, especially for vascular plants, underscoring the roles of local species pools, dispersal limitation, and site history in shaping community patterns. Establishing a reliable baseline is crucial for interpreting the distribution patterns of mire vegetation. Our results demonstrate that both environmental gradients and spatial processes are fundamental to understanding mire vegetation and highlight the importance of analyzing plant taxonomic groups separately.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/223758
url https://hdl.handle.net/2445/223758
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3390/d17100702
Diversity, 2025, vol. 17, num.10, p. 1-23
https://doi.org/10.3390/d17100702
dc.rights.none.fl_str_mv cc-by (c) Pérez-Haase, Aaron et al., 2025
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Pérez-Haase, Aaron et al., 2025
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 23 p.
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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