Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network

Networks of alpine lakes and ponds support unique assemblages of aquatic organisms and provide an ideal biogeographical setting for studying the evolutionary, ecological and demographic outcomes of population fragmentation. In this study, we integrate genomic, morphological and community-level data...

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Authors: Ortego, Joaquín, Franco Fuentes, Eduardo, Pallares Parraga, Susana, Carbonell Hernández, José Antonio, Caballero Fernández, Daniel, Abellán Ródenas, Pedro
Format: article
Status:Published version
Publication Date:2025
Country:España
Institution:Universidad de Sevilla (US)
Repository:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/179693
Online Access:https://hdl.handle.net/11441/179693
https://doi.org/10.1111/mec.70173
Access Level:Open access
Keyword:Alpine lakes
Demography
Diving beetles
Genetic diversity
Landscape genetics
Macroinvertebrate aquatic communities
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spelling Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake NetworkOrtego, JoaquínFranco Fuentes, EduardoPallares Parraga, SusanaCarbonell Hernández, José AntonioCaballero Fernández, DanielAbellán Ródenas, PedroAlpine lakesDemographyDiving beetlesGenetic diversityLandscape geneticsMacroinvertebrate aquatic communitiesNetworks of alpine lakes and ponds support unique assemblages of aquatic organisms and provide an ideal biogeographical setting for studying the evolutionary, ecological and demographic outcomes of population fragmentation. In this study, we integrate genomic, morphological and community-level data within a comparative multi-taxon framework to investigate genetic connectivity, demographic trajectories and eco-evolutionary dynamics in four diving beetles (Coleoptera: Dytiscidae) representative of the macroinvertebrate assemblages inhabiting high altitude lakes in the Sierra Nevada massif, southeastern Iberia. Although the focal taxa share similar ecological requirements, primarily occupy lentic habitats and disperse by flight, our results reveal substantial heterogeneity in their demographic responses to the naturally fragmented distribution of alpine lakes. Taxa with higher wing loading exhibited stronger genetic differentiation among populations, probably due to their reduced capacity to disperse across the direct geographic distances separating lakes. Populations located at the range periphery tended to exhibit lower genetic diversity than central populations in all taxa. Demographic reconstructions showed a general decline in effective population size from the last glacial maximum (LGM) to the present. However, some populations of genetically more structured taxa went through brief bottlenecks that coincided with periods of warmer climate and lower lake levels, as inferred from local paleoclimatic reconstructions. Finally, the composition of macroinvertebrate assemblages (α-diversity and β-diversity) was not associated with intra-specific genetic diversity or differentiation, suggesting that species-level demographic trajectories and community-level dynamics are decoupled. Our findings indicate that interspecific differences in dispersal capacity outweigh shared environmental constraints in determining the contrasting demographic trajectories of the studied taxa. Collectively, these results emphasise the importance of multi-taxon approaches for understanding the dynamics of species assemblages in alpine ecosystems that are highly vulnerable to climate warming.WileyZoologíaMinisterio de Ciencia, Innovación y Universidades (MICIU). España2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/179693https://doi.org/10.1111/mec.70173reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésMolecular Ecology.PID2019-108895GB-I00PID2023-151155NB-I00PCI2022-135076-2https://doi.org/10.1111/mec.70173info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1796932026-06-17T12:51:07Z
dc.title.none.fl_str_mv Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network
title Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network
spellingShingle Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network
Ortego, Joaquín
Alpine lakes
Demography
Diving beetles
Genetic diversity
Landscape genetics
Macroinvertebrate aquatic communities
title_short Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network
title_full Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network
title_fullStr Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network
title_full_unstemmed Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network
title_sort Dispersal Capacity Rather Than Shared Environmental Constraints Determines Taxon-Specific Demographic Dynamics in an Alpine Lake Network
dc.creator.none.fl_str_mv Ortego, Joaquín
Franco Fuentes, Eduardo
Pallares Parraga, Susana
Carbonell Hernández, José Antonio
Caballero Fernández, Daniel
Abellán Ródenas, Pedro
author Ortego, Joaquín
author_facet Ortego, Joaquín
Franco Fuentes, Eduardo
Pallares Parraga, Susana
Carbonell Hernández, José Antonio
Caballero Fernández, Daniel
Abellán Ródenas, Pedro
author_role author
author2 Franco Fuentes, Eduardo
Pallares Parraga, Susana
Carbonell Hernández, José Antonio
Caballero Fernández, Daniel
Abellán Ródenas, Pedro
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Zoología
Ministerio de Ciencia, Innovación y Universidades (MICIU). España
dc.subject.none.fl_str_mv Alpine lakes
Demography
Diving beetles
Genetic diversity
Landscape genetics
Macroinvertebrate aquatic communities
topic Alpine lakes
Demography
Diving beetles
Genetic diversity
Landscape genetics
Macroinvertebrate aquatic communities
description Networks of alpine lakes and ponds support unique assemblages of aquatic organisms and provide an ideal biogeographical setting for studying the evolutionary, ecological and demographic outcomes of population fragmentation. In this study, we integrate genomic, morphological and community-level data within a comparative multi-taxon framework to investigate genetic connectivity, demographic trajectories and eco-evolutionary dynamics in four diving beetles (Coleoptera: Dytiscidae) representative of the macroinvertebrate assemblages inhabiting high altitude lakes in the Sierra Nevada massif, southeastern Iberia. Although the focal taxa share similar ecological requirements, primarily occupy lentic habitats and disperse by flight, our results reveal substantial heterogeneity in their demographic responses to the naturally fragmented distribution of alpine lakes. Taxa with higher wing loading exhibited stronger genetic differentiation among populations, probably due to their reduced capacity to disperse across the direct geographic distances separating lakes. Populations located at the range periphery tended to exhibit lower genetic diversity than central populations in all taxa. Demographic reconstructions showed a general decline in effective population size from the last glacial maximum (LGM) to the present. However, some populations of genetically more structured taxa went through brief bottlenecks that coincided with periods of warmer climate and lower lake levels, as inferred from local paleoclimatic reconstructions. Finally, the composition of macroinvertebrate assemblages (α-diversity and β-diversity) was not associated with intra-specific genetic diversity or differentiation, suggesting that species-level demographic trajectories and community-level dynamics are decoupled. Our findings indicate that interspecific differences in dispersal capacity outweigh shared environmental constraints in determining the contrasting demographic trajectories of the studied taxa. Collectively, these results emphasise the importance of multi-taxon approaches for understanding the dynamics of species assemblages in alpine ecosystems that are highly vulnerable to climate warming.
publishDate 2025
dc.date.none.fl_str_mv 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/11441/179693
https://doi.org/10.1111/mec.70173
url https://hdl.handle.net/11441/179693
https://doi.org/10.1111/mec.70173
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Molecular Ecology.
PID2019-108895GB-I00
PID2023-151155NB-I00
PCI2022-135076-2
https://doi.org/10.1111/mec.70173
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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