Islands of ice: Glacier-dwelling metazoans form regionally distinct populations despite extensive periods of deglaciation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F24%3A00604139" target="_blank" >RIV/60077344:_____/24:00604139 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389030:_____/24:00599082 RIV/67985904:_____/24:00599082 RIV/60076658:12310/24:43908552 RIV/61988987:17310/24:A2503ANA

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1111/ddi.13859" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1111/ddi.13859</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ddi.13859" target="_blank" >10.1111/ddi.13859</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Islands of ice: Glacier-dwelling metazoans form regionally distinct populations despite extensive periods of deglaciation

Popis výsledku v původním jazyce

Aim: Glaciers cover considerable portion of land and host diverse life forms from single-celled organisms to invertebrates. However, the determinants of diversity and community composition of these organisms remain underexplored. This study addresses the biogeography, population connectivity and dispersal of these organisms, especially critical in understanding during the rapid recession of glaciers and increased extinction risk for isolated populations. By reconstructing the Quaternary biogeographic history of Fontourion glacialis, a widespread in Northern Hemisphere glacier obligate species of Tardigrada, we aim to understand how populations of glacier-dwelling metazoans receive immigrants, respond to disappearing glaciers and to 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 specimens collected across the distribution range. Phylogeographic and coalescent-based approaches were used to detect population differentiation patterns, investigate most likely models of gene flow and test the influences of geographical and climatic factors on the distribution of F. glacialis genetic variants. Results: Our findings indicate that the distribution of F. glacialis genetic variants is primarily influenced by geographical rather than climatic factors. Populations exhibit a dispersal-limited distribution pattern, influenced by geographical distance and local barriers, even between neighbouring glaciers. Significantly, the genetic structure within Scandinavia suggests the existence of ''southern'' glacial or low-temperature refugia, where F. glacialis may have survived a period of extensive deglaciation during the Holocene climatic optimum (8-5 kyr ago). Main Conclusion: The study uncovers complex metapopulation structures in F. glacialis, with impacts of local barriers, population bottlenecks as well as historical ice sheet fluctuations. It suggests that such populations can endure extended periods of deglaciation, highlighting the resilience of glacial refugia. The study highlights the necessity of understanding the diversity and population structure of ice-dwelling fauna in both spatial and temporal contexts.

Název v anglickém jazyce

Islands of ice: Glacier-dwelling metazoans form regionally distinct populations despite extensive periods of deglaciation

Popis výsledku anglicky

Aim: Glaciers cover considerable portion of land and host diverse life forms from single-celled organisms to invertebrates. However, the determinants of diversity and community composition of these organisms remain underexplored. This study addresses the biogeography, population connectivity and dispersal of these organisms, especially critical in understanding during the rapid recession of glaciers and increased extinction risk for isolated populations. By reconstructing the Quaternary biogeographic history of Fontourion glacialis, a widespread in Northern Hemisphere glacier obligate species of Tardigrada, we aim to understand how populations of glacier-dwelling metazoans receive immigrants, respond to disappearing glaciers and to 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 specimens collected across the distribution range. Phylogeographic and coalescent-based approaches were used to detect population differentiation patterns, investigate most likely models of gene flow and test the influences of geographical and climatic factors on the distribution of F. glacialis genetic variants. Results: Our findings indicate that the distribution of F. glacialis genetic variants is primarily influenced by geographical rather than climatic factors. Populations exhibit a dispersal-limited distribution pattern, influenced by geographical distance and local barriers, even between neighbouring glaciers. Significantly, the genetic structure within Scandinavia suggests the existence of ''southern'' glacial or low-temperature refugia, where F. glacialis may have survived a period of extensive deglaciation during the Holocene climatic optimum (8-5 kyr ago). Main Conclusion: The study uncovers complex metapopulation structures in F. glacialis, with impacts of local barriers, population bottlenecks as well as historical ice sheet fluctuations. It suggests that such populations can endure extended periods of deglaciation, highlighting the resilience of glacial refugia. The study highlights the necessity of understanding the diversity and population structure of ice-dwelling fauna in both spatial and temporal contexts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

<a href="/cs/project/GA22-28778S" target="_blank" >GA22-28778S: Unikátní společenstvo ledovcových želvušek a vířníků v evolučním, fyziologickém a ekologickém kontextu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Diversity and Distributions

ISSN

1366-9516

e-ISSN

1472-4642

Svazek periodika

30

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

e13859

Kód UT WoS článku

001293856500001

EID výsledku v databázi Scopus

2-s2.0-85200956137