dc.contributor.author | Janko, Karel | |
dc.contributor.author | Shain, Daniel H. | |
dc.contributor.author | Fontaneto, Diego | |
dc.contributor.author | Doležálková, Marie Kaštánková | |
dc.contributor.author | Buda, Jakub | |
dc.contributor.author | Kašparová, Eva Štefková | |
dc.contributor.author | Šabacká, Marie | |
dc.contributor.author | Rosvold, Jørgen | |
dc.contributor.author | Stefaniak, Jacek | |
dc.contributor.author | Hessen, Dag Olav | |
dc.contributor.author | Devetter, Miloslav | |
dc.contributor.author | Jimenez Santos, Marco Antonio | |
dc.contributor.author | Horna, Patrik | |
dc.contributor.author | Drdová, Edita Janková | |
dc.contributor.author | Yde, Jacob C. | |
dc.contributor.author | Zawierucha, Krzysztof | |
dc.coverage.spatial | Svalbard, Norway, Scandinavia, Greenland, Iceland | en_US |
dc.date.accessioned | 2024-08-16T07:57:47Z | |
dc.date.available | 2024-08-16T07:57:47Z | |
dc.date.created | 2024-08-15T08:52:49Z | |
dc.date.issued | 2024 | |
dc.identifier.issn | 1366-9516 | |
dc.identifier.uri | https://hdl.handle.net/11250/3146728 | |
dc.description.abstract | Aim: Glaciers cover considerable portion of land and host diverse life forms fromsingle-celled organisms to invertebrates. However, the determinants of diversityand community composition of these organisms remain underexplored. This studyaddresses the biogeography, population connectivity and dispersal of these organ-isms, especially critical in understanding during the rapid recession of glaciers andincreased extinction risk for isolated populations. By reconstructing the Quaternarybiogeographic history of Fontourion glacialis, a widespread in Northern Hemisphereglacier obligate species of Tardigrada, we aim to understand how populations ofglacier-dwelling metazoans receive immigrants, respond to disappearing glaciers andto what extent remaining glaciers can serve as refugia.Location: Glaciers across Svalbard, Scandinavia, Greenland and Iceland. Methods: We analysed mtDNA (COI gene) variability of 263 F. glacialis specimenscollected across the distribution range. Phylogeographic and coalescent-based ap-proaches were used to detect population differentiation patterns, investigate mostlikely models of gene flow and test the influences of geographical and climatic factorson the distribution of F. glacialis genetic variants.Results: Our findings indicate that the distribution of F. glacialis genetic variants isprimarily influenced by geographical rather than climatic factors. Populations exhibita dispersal-limited distribution pattern, influenced by geographical distance and localbarriers, even between neighbouring glaciers. Significantly, the genetic structurewithin Scandinavia suggests the existence of “southern” glacial or low-temperaturerefugia, where F. glacialis may have survived a period of extensive deglaciation duringthe Holocene climatic optimum (8–5 kyr ago).Main Conclusion: The study uncovers complex metapopulation structures in F. glacia-lis, with impacts of local barriers, population bottlenecks as well as historical ice sheetfluctuations. It suggests that such populations can endure extended periods of degla-ciation, highlighting the resilience of glacial refugia. The study highlights the necessityof understanding the diversity and population structure of ice-dwelling fauna in bothspatial and temporal contexts. cryoconite ecosystems, glacial ecology and biogeography, ice-fauna survival, impact ofdeglaciation, phylogeography, quaternary history, refugia identification, Tardigrada | en_US |
dc.language.iso | eng | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Islands of ice: Glacier-dwelling metazoans form regionally distinct populations despite extensive periods of deglaciation | en_US |
dc.title.alternative | Islands of ice: Glacier-dwelling metazoans form regionally distinct populations despite extensive periods of deglaciation | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © 2024 The Authors | en_US |
dc.subject.nsi | VDP::Matematikk og naturvitenskap: 400 | en_US |
dc.subject.nsi | VDP::Mathematics and natural scienses: 400 | en_US |
dc.subject.nsi | VDP::Matematikk og naturvitenskap: 400 | en_US |
dc.subject.nsi | VDP::Mathematics and natural scienses: 400 | en_US |
dc.source.journal | Diversity and Distributions: A Journal of Conservation Biogeography | en_US |
dc.identifier.doi | 10.1111/ddi.13859 | |
dc.identifier.cristin | 2286578 | |
dc.relation.project | Norges forskningsråd: 302458 | en_US |
dc.source.articlenumber | e13859 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |