Dispersal distances and migration rates at the arctic treeline in Siberia – a genetic and simulation-based study
A strong temperature increase in the Arctic is expected to lead to latitudinal treeline shift. This tundra–taiga turnover would cause a positive vegetation–climate feedback due to albedo decrease. However, reliable estimates of tree migration rates are currently lacking due to the complex processes...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , , |
Format: | Text |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-16-1211-2019 https://www.biogeosciences.net/16/1211/2019/ |
id |
ftcopernicus:oai:publications.copernicus.org:bg69650 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:bg69650 2023-05-15T13:11:42+02:00 Dispersal distances and migration rates at the arctic treeline in Siberia – a genetic and simulation-based study Kruse, Stefan Gerdes, Alexander Kath, Nadja J. Epp, Laura S. Stoof-Leichsenring, Kathleen R. Pestryakova, Luidmila A. Herzschuh, Ulrike 2019-03-22 application/pdf https://doi.org/10.5194/bg-16-1211-2019 https://www.biogeosciences.net/16/1211/2019/ eng eng doi:10.5194/bg-16-1211-2019 https://www.biogeosciences.net/16/1211/2019/ eISSN: 1726-4189 Text 2019 ftcopernicus https://doi.org/10.5194/bg-16-1211-2019 2019-12-24T09:49:22Z A strong temperature increase in the Arctic is expected to lead to latitudinal treeline shift. This tundra–taiga turnover would cause a positive vegetation–climate feedback due to albedo decrease. However, reliable estimates of tree migration rates are currently lacking due to the complex processes involved in forest establishment, which depend strongly on seed dispersal. We aim to fill this gap using LAVESI, an individual-based and spatially explicit Larix vegetation simulator. LAVESI was designed to simulate plots within homogeneous forests. Here, we improve the implementation of the seed dispersal function via field-based investigations. We inferred the effective seed dispersal distances of a typical open-forest stand on the southern Taymyr Peninsula (northern central Siberia) from genetic parentage analysis using eight nuclear microsatellite markers. The parentage analysis gives effective seed dispersal distances (median ∼10 m) close to the seed parents. A comparison between simulated and observed effective seed dispersal distances reveals an overestimation of recruits close to the releasing tree and a shorter dispersal distance generally. We thus adapted our model and used the newly parameterised version to simulate south-to-north transects; a slow-moving treeline front was revealed. The colonisation of the tundra areas was assisted by occasional long-distance seed dispersal events beyond the treeline area. The treeline ( ∼1 tree ha −1 ) advanced by ∼1.6 m yr −1 , whereas the forest line ( ∼100 trees ha −1 ) advanced by only ∼0.6 m yr −1 . We conclude that the treeline in northern central Siberia currently lags behind the current strong warming and will continue to lag in the near future. Text albedo Arctic taiga Taymyr Taymyr Peninsula Tundra Siberia Copernicus Publications: E-Journals Arctic Taymyr ENVELOPE(89.987,89.987,68.219,68.219) Biogeosciences 16 6 1211 1224 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
A strong temperature increase in the Arctic is expected to lead to latitudinal treeline shift. This tundra–taiga turnover would cause a positive vegetation–climate feedback due to albedo decrease. However, reliable estimates of tree migration rates are currently lacking due to the complex processes involved in forest establishment, which depend strongly on seed dispersal. We aim to fill this gap using LAVESI, an individual-based and spatially explicit Larix vegetation simulator. LAVESI was designed to simulate plots within homogeneous forests. Here, we improve the implementation of the seed dispersal function via field-based investigations. We inferred the effective seed dispersal distances of a typical open-forest stand on the southern Taymyr Peninsula (northern central Siberia) from genetic parentage analysis using eight nuclear microsatellite markers. The parentage analysis gives effective seed dispersal distances (median ∼10 m) close to the seed parents. A comparison between simulated and observed effective seed dispersal distances reveals an overestimation of recruits close to the releasing tree and a shorter dispersal distance generally. We thus adapted our model and used the newly parameterised version to simulate south-to-north transects; a slow-moving treeline front was revealed. The colonisation of the tundra areas was assisted by occasional long-distance seed dispersal events beyond the treeline area. The treeline ( ∼1 tree ha −1 ) advanced by ∼1.6 m yr −1 , whereas the forest line ( ∼100 trees ha −1 ) advanced by only ∼0.6 m yr −1 . We conclude that the treeline in northern central Siberia currently lags behind the current strong warming and will continue to lag in the near future. |
format |
Text |
author |
Kruse, Stefan Gerdes, Alexander Kath, Nadja J. Epp, Laura S. Stoof-Leichsenring, Kathleen R. Pestryakova, Luidmila A. Herzschuh, Ulrike |
spellingShingle |
Kruse, Stefan Gerdes, Alexander Kath, Nadja J. Epp, Laura S. Stoof-Leichsenring, Kathleen R. Pestryakova, Luidmila A. Herzschuh, Ulrike Dispersal distances and migration rates at the arctic treeline in Siberia – a genetic and simulation-based study |
author_facet |
Kruse, Stefan Gerdes, Alexander Kath, Nadja J. Epp, Laura S. Stoof-Leichsenring, Kathleen R. Pestryakova, Luidmila A. Herzschuh, Ulrike |
author_sort |
Kruse, Stefan |
title |
Dispersal distances and migration rates at the arctic treeline in Siberia – a genetic and simulation-based study |
title_short |
Dispersal distances and migration rates at the arctic treeline in Siberia – a genetic and simulation-based study |
title_full |
Dispersal distances and migration rates at the arctic treeline in Siberia – a genetic and simulation-based study |
title_fullStr |
Dispersal distances and migration rates at the arctic treeline in Siberia – a genetic and simulation-based study |
title_full_unstemmed |
Dispersal distances and migration rates at the arctic treeline in Siberia – a genetic and simulation-based study |
title_sort |
dispersal distances and migration rates at the arctic treeline in siberia – a genetic and simulation-based study |
publishDate |
2019 |
url |
https://doi.org/10.5194/bg-16-1211-2019 https://www.biogeosciences.net/16/1211/2019/ |
long_lat |
ENVELOPE(89.987,89.987,68.219,68.219) |
geographic |
Arctic Taymyr |
geographic_facet |
Arctic Taymyr |
genre |
albedo Arctic taiga Taymyr Taymyr Peninsula Tundra Siberia |
genre_facet |
albedo Arctic taiga Taymyr Taymyr Peninsula Tundra Siberia |
op_source |
eISSN: 1726-4189 |
op_relation |
doi:10.5194/bg-16-1211-2019 https://www.biogeosciences.net/16/1211/2019/ |
op_doi |
https://doi.org/10.5194/bg-16-1211-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
container_issue |
6 |
container_start_page |
1211 |
op_container_end_page |
1224 |
_version_ |
1766248638205394944 |