High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites

Arctic treelines are facing a strong temperature increase as a result of recent global warming, causing possible changes in forest extent, which will alter vegetation-climate feedbacks. However, the mode and strength of the response is rather unclear, as potential changes are happening in areas that...

Full description

Bibliographic Details
Published in:Tree Genetics & Genomes
Main Authors: Kruse, Stefan (Dr.), Epp, Laura Saskia, Wieczorek, Mareike, Pestryakova, Luidmila Agafyevna, Stoof-Leichsenring, Kathleen Rosemarie (Dr.), Herzschuh, Ulrike
Format: Article in Journal/Newspaper
Language:English
Published: 2018
Subjects:
Online Access:https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53155
https://doi.org/10.1007/s11295-018-1235-3
id ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:53155
record_format openpolar
spelling ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:53155 2023-12-17T10:25:44+01:00 High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites Kruse, Stefan (Dr.) Epp, Laura Saskia Wieczorek, Mareike Pestryakova, Luidmila Agafyevna Stoof-Leichsenring, Kathleen Rosemarie (Dr.) Herzschuh, Ulrike 2018-02-07 https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53155 https://doi.org/10.1007/s11295-018-1235-3 eng eng https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53155 https://doi.org/10.1007/s11295-018-1235-3 info:eu-repo/semantics/closedAccess ddc:570 Institut für Biochemie und Biologie article doc-type:article 2018 ftubpotsdam https://doi.org/10.1007/s11295-018-1235-3 2023-11-19T23:35:15Z Arctic treelines are facing a strong temperature increase as a result of recent global warming, causing possible changes in forest extent, which will alter vegetation-climate feedbacks. However, the mode and strength of the response is rather unclear, as potential changes are happening in areas that are very remote and difficult to access, and empirical data are still largely lacking. Here, we assessed the current population structure and genetic differentiation of Larix Mill. tree stands within the northernmost latitudinal treeline reaching ~ 72° N in the southern lowlands of the Taymyr Peninsula (~ 100° E). We sampled 743 individuals belonging to different height classes (seedlings, saplings, trees) at 11 locations along a gradient from ‘single tree’ tundra over ‘forest line’ to ‘dense forest’ stands and conducted investigations applying eight highly polymorphic nuclear microsatellites. Results suggest a high diversity within sub-populations (HE = 0.826–0.893), coupled, however, with heterozygote deficits in all sub-populations, but pronounced in ‘forest line’ stands. Overall, genetic differentiation of sub-populations is low (FST = 0.005), indicating a region-wide high gene flow, although ‘forest line’ stands harbour few rare and private alleles, likely indicating greater local reproduction. ‘Single tree’ stands, located beyond the northern forest line, are currently not involved in treeline expansion, but show signs of a long-term refuge, namely asexual reproduction and change of growth-form from erect to creeping growth, possibly having persisted for thousands of years. The lack of differentiation between the sub-populations points to a sufficiently high dispersal potential, and thus a rapid northward migration of the Siberian arctic treeline under recent global warming seems potentially unconstrained, but observations show it to be unexpectedly slow. Article in Journal/Newspaper Arctic Global warming Taymyr Taymyr Peninsula Tundra Siberia University of Potsdam: publish.UP Arctic Taymyr ENVELOPE(89.987,89.987,68.219,68.219) Tree Genetics & Genomes 14 2
institution Open Polar
collection University of Potsdam: publish.UP
op_collection_id ftubpotsdam
language English
topic ddc:570
Institut für Biochemie und Biologie
spellingShingle ddc:570
Institut für Biochemie und Biologie
Kruse, Stefan (Dr.)
Epp, Laura Saskia
Wieczorek, Mareike
Pestryakova, Luidmila Agafyevna
Stoof-Leichsenring, Kathleen Rosemarie (Dr.)
Herzschuh, Ulrike
High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites
topic_facet ddc:570
Institut für Biochemie und Biologie
description Arctic treelines are facing a strong temperature increase as a result of recent global warming, causing possible changes in forest extent, which will alter vegetation-climate feedbacks. However, the mode and strength of the response is rather unclear, as potential changes are happening in areas that are very remote and difficult to access, and empirical data are still largely lacking. Here, we assessed the current population structure and genetic differentiation of Larix Mill. tree stands within the northernmost latitudinal treeline reaching ~ 72° N in the southern lowlands of the Taymyr Peninsula (~ 100° E). We sampled 743 individuals belonging to different height classes (seedlings, saplings, trees) at 11 locations along a gradient from ‘single tree’ tundra over ‘forest line’ to ‘dense forest’ stands and conducted investigations applying eight highly polymorphic nuclear microsatellites. Results suggest a high diversity within sub-populations (HE = 0.826–0.893), coupled, however, with heterozygote deficits in all sub-populations, but pronounced in ‘forest line’ stands. Overall, genetic differentiation of sub-populations is low (FST = 0.005), indicating a region-wide high gene flow, although ‘forest line’ stands harbour few rare and private alleles, likely indicating greater local reproduction. ‘Single tree’ stands, located beyond the northern forest line, are currently not involved in treeline expansion, but show signs of a long-term refuge, namely asexual reproduction and change of growth-form from erect to creeping growth, possibly having persisted for thousands of years. The lack of differentiation between the sub-populations points to a sufficiently high dispersal potential, and thus a rapid northward migration of the Siberian arctic treeline under recent global warming seems potentially unconstrained, but observations show it to be unexpectedly slow.
format Article in Journal/Newspaper
author Kruse, Stefan (Dr.)
Epp, Laura Saskia
Wieczorek, Mareike
Pestryakova, Luidmila Agafyevna
Stoof-Leichsenring, Kathleen Rosemarie (Dr.)
Herzschuh, Ulrike
author_facet Kruse, Stefan (Dr.)
Epp, Laura Saskia
Wieczorek, Mareike
Pestryakova, Luidmila Agafyevna
Stoof-Leichsenring, Kathleen Rosemarie (Dr.)
Herzschuh, Ulrike
author_sort Kruse, Stefan (Dr.)
title High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites
title_short High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites
title_full High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites
title_fullStr High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites
title_full_unstemmed High gene flow and complex treeline dynamics of Larix Mill. stands on the Taymyr Peninsula (north-central Siberia) revealed by nuclear microsatellites
title_sort high gene flow and complex treeline dynamics of larix mill. stands on the taymyr peninsula (north-central siberia) revealed by nuclear microsatellites
publishDate 2018
url https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53155
https://doi.org/10.1007/s11295-018-1235-3
long_lat ENVELOPE(89.987,89.987,68.219,68.219)
geographic Arctic
Taymyr
geographic_facet Arctic
Taymyr
genre Arctic
Global warming
Taymyr
Taymyr Peninsula
Tundra
Siberia
genre_facet Arctic
Global warming
Taymyr
Taymyr Peninsula
Tundra
Siberia
op_relation https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53155
https://doi.org/10.1007/s11295-018-1235-3
op_rights info:eu-repo/semantics/closedAccess
op_doi https://doi.org/10.1007/s11295-018-1235-3
container_title Tree Genetics & Genomes
container_volume 14
container_issue 2
_version_ 1785577394347704320