Data from: Global biogeographic patterns in bipolar moss species

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dc.contributor.affiliationBritish Antarctic Survey - Biersma, Elisabeth Machteld
dc.contributor.affiliationBritish Antarctic Survey - Jackson, Jennifer A.
dc.contributor.affiliationUniversity of Helsinki - Hyvonen, Jaakko
dc.contributor.affiliationNatural Environment Research Council - Koskinen, Satu
dc.contributor.affiliationBritish Antarctic Survey - Linse, Katrin
dc.contributor.affiliationUniversity of Cambridge - Griffiths, Howard
dc.contributor.affiliationBritish Antarctic Survey - Convey, Peter
dc.contributor.authorBiersma, Elisabeth Machteld
dc.contributor.authorJackson, Jennifer A.
dc.contributor.authorHyvonen, Jaakko
dc.contributor.authorKoskinen, Satu
dc.contributor.authorLinse, Katrin
dc.contributor.authorGriffiths, Howard
dc.contributor.authorConvey, Peter
dc.coverage.spatialglobal
dc.date.accessioned2025-03-24T15:20:57Z
dc.date.issued2017-06-09
dc.date.issued2017-06-09
dc.descriptionA bipolar disjunction is an extreme, yet common, biogeographic pattern in non-vascular plants, yet its underlying mechanisms (vicariance or long-distance dispersal), origin and timing remain poorly understood. Here, combining a large-scale population dataset and multiple dating analyses, we examine the biogeography of four bipolar Polytrichales mosses, common to the Holarctic (temperate and polar Northern Hemisphere regions) and the Antarctic region (Antarctic, sub-Antarctic, southern South America) and other Southern Hemisphere (SH) regions. Our data reveal contrasting patterns, for three species were of Holarctic origin, with subsequent dispersal to the SH, while one, currently a particularly common species in the Holarctic (Polytrichum juniperinum), diversified in the Antarctic region and from here colonized both the Holarctic and other SH regions. Our findings suggest long-distance dispersal as the driver of bipolar disjunctions. We find such inter-hemispheric dispersals are rare, occurring on multi-million-year timescales. High-altitude tropical populations did not act as trans-equatorial 'stepping-stones', but rather were derived from later dispersal events. All arrivals to the Antarctic region occurred well before the Last Glacial Maximum and previous glaciations, suggesting that, despite the harsh climate during these past glacial maxima, plants have had a much longer presence in this southern region than previously thought.
dc.identifierhttps://doi.org/10.5061/dryad.4m35m
dc.identifier.urihttps://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/10600
dc.rightsOpen
dc.rights.licensecc-zero
dc.subjecthigh latitude
dc.subjectpolar
dc.subjectPolytrichum juniperinum
dc.subjectPolytrichastrum
dc.subjectPolytrichaceae
dc.subjectbryophyte
dc.subjectPolytrichum piliferum
dc.subjectmoss
dc.subjectPolytrichum strictum
dc.subjectPolytrichastrum alpinum
dc.subjectOligocene
dc.subjectAmphitropical
dc.subjectBipolar disjunction
dc.subjectMiocene
dc.titleData from: Global biogeographic patterns in bipolar moss species
dc.typedataset
dc.typedataset

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