Exploring climatic and biotic controls on Holocene vegetation change in Fennoscandia
# 1. We investigated the potential drivers of Holocene vegetation changes recorded at four Scandinavian pollen sites, two in Sweden and two in Finland, at a time when they were largely free of anthropogenic influence. # 2. We used the generalized dynamic vegetation model LPJ-GUESS forced with climat...
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ftulundlup:oai:lup.lub.lu.se:d64bfeaa-b002-46fa-b661-03695ce183b1 2023-05-15T16:12:14+02:00 Exploring climatic and biotic controls on Holocene vegetation change in Fennoscandia Miller, Paul Giesecke, Thomas Hickler, Thomas Bradshaw, Richard H.W. Smith, Benjamin Seppä, Heikki Valdes, Paul J. Sykes, Martin 2008 https://lup.lub.lu.se/record/599843 https://doi.org/10.1111/j.1365-2745.2007.01342.x eng eng Wiley-Blackwell https://lup.lub.lu.se/record/599843 http://dx.doi.org/10.1111/j.1365-2745.2007.01342.x wos:000252899300002 scopus:38849143932 Journal of Ecology; 96(2), pp 247-259 (2008) ISSN: 1365-2745 Physical Geography contributiontojournal/article info:eu-repo/semantics/article text 2008 ftulundlup https://doi.org/10.1111/j.1365-2745.2007.01342.x 2023-02-01T23:28:52Z # 1. We investigated the potential drivers of Holocene vegetation changes recorded at four Scandinavian pollen sites, two in Sweden and two in Finland, at a time when they were largely free of anthropogenic influence. # 2. We used the generalized dynamic vegetation model LPJ-GUESS forced with climate anomaly output from an atmospheric general circulation model to simulate tree species dynamics from 10 000 years ago to the present. The model results were compared to high-resolution pollen accumulation rates gathered at the sites. # 3. Our results indicate that both the observed northern distributional limits of temperate trees, and the limits of Pinus sylvestris and Alnus incana at the tree line, are a result of millennial variations in summer and winter temperatures. The simulation of several distinct trends in species occurrence observed in the pollen record indicates that a time lag due to the slow spreading of species need not be invoked for most species. # 4. Sensitivity studies indicate that competition, natural disturbance and the magnitude of interannual variability play key roles in determining the biomass, establishment and even the presence of species near their bioclimatic limits. However, neither disturbance due to fire nor limits on establishment due to drought were likely to have been major determinants of the observed trends on the timescales considered. # 5. We were unable to limit the modelled occurrence of Picea abies at the study sites to the periods at which it was observed in the pollen records, indicating that we have still not completely understood the driving or limiting factors for Holocene changes in Picea abies abundance. # 6. Synthesis. This study shows that by combining quantitative vegetation reconstructions with a modern, process-based dynamic vegetation model, we may gain new insights into the potential biotic and abiotic drivers of Holocene vegetation dynamics, and their relative importance. This knowledge will be crucial in enabling us to assess more confidently the response of ... Article in Journal/Newspaper Fennoscandia Lund University Publications (LUP) Journal of Ecology 96 2 247 259 |
institution |
Open Polar |
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Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Physical Geography |
spellingShingle |
Physical Geography Miller, Paul Giesecke, Thomas Hickler, Thomas Bradshaw, Richard H.W. Smith, Benjamin Seppä, Heikki Valdes, Paul J. Sykes, Martin Exploring climatic and biotic controls on Holocene vegetation change in Fennoscandia |
topic_facet |
Physical Geography |
description |
# 1. We investigated the potential drivers of Holocene vegetation changes recorded at four Scandinavian pollen sites, two in Sweden and two in Finland, at a time when they were largely free of anthropogenic influence. # 2. We used the generalized dynamic vegetation model LPJ-GUESS forced with climate anomaly output from an atmospheric general circulation model to simulate tree species dynamics from 10 000 years ago to the present. The model results were compared to high-resolution pollen accumulation rates gathered at the sites. # 3. Our results indicate that both the observed northern distributional limits of temperate trees, and the limits of Pinus sylvestris and Alnus incana at the tree line, are a result of millennial variations in summer and winter temperatures. The simulation of several distinct trends in species occurrence observed in the pollen record indicates that a time lag due to the slow spreading of species need not be invoked for most species. # 4. Sensitivity studies indicate that competition, natural disturbance and the magnitude of interannual variability play key roles in determining the biomass, establishment and even the presence of species near their bioclimatic limits. However, neither disturbance due to fire nor limits on establishment due to drought were likely to have been major determinants of the observed trends on the timescales considered. # 5. We were unable to limit the modelled occurrence of Picea abies at the study sites to the periods at which it was observed in the pollen records, indicating that we have still not completely understood the driving or limiting factors for Holocene changes in Picea abies abundance. # 6. Synthesis. This study shows that by combining quantitative vegetation reconstructions with a modern, process-based dynamic vegetation model, we may gain new insights into the potential biotic and abiotic drivers of Holocene vegetation dynamics, and their relative importance. This knowledge will be crucial in enabling us to assess more confidently the response of ... |
format |
Article in Journal/Newspaper |
author |
Miller, Paul Giesecke, Thomas Hickler, Thomas Bradshaw, Richard H.W. Smith, Benjamin Seppä, Heikki Valdes, Paul J. Sykes, Martin |
author_facet |
Miller, Paul Giesecke, Thomas Hickler, Thomas Bradshaw, Richard H.W. Smith, Benjamin Seppä, Heikki Valdes, Paul J. Sykes, Martin |
author_sort |
Miller, Paul |
title |
Exploring climatic and biotic controls on Holocene vegetation change in Fennoscandia |
title_short |
Exploring climatic and biotic controls on Holocene vegetation change in Fennoscandia |
title_full |
Exploring climatic and biotic controls on Holocene vegetation change in Fennoscandia |
title_fullStr |
Exploring climatic and biotic controls on Holocene vegetation change in Fennoscandia |
title_full_unstemmed |
Exploring climatic and biotic controls on Holocene vegetation change in Fennoscandia |
title_sort |
exploring climatic and biotic controls on holocene vegetation change in fennoscandia |
publisher |
Wiley-Blackwell |
publishDate |
2008 |
url |
https://lup.lub.lu.se/record/599843 https://doi.org/10.1111/j.1365-2745.2007.01342.x |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Journal of Ecology; 96(2), pp 247-259 (2008) ISSN: 1365-2745 |
op_relation |
https://lup.lub.lu.se/record/599843 http://dx.doi.org/10.1111/j.1365-2745.2007.01342.x wos:000252899300002 scopus:38849143932 |
op_doi |
https://doi.org/10.1111/j.1365-2745.2007.01342.x |
container_title |
Journal of Ecology |
container_volume |
96 |
container_issue |
2 |
container_start_page |
247 |
op_container_end_page |
259 |
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1765997490495029248 |