Dendrochronological investigations of forest fire, tree ring growth and climate west of Puostijärvi lake, northern Sweden
How trees respond to climatic factors such as temperature and precipitation is well documented but can be locally different when other factors play a part in the process. Forest fires have had a large influence in boreal zones around the world and in the boreal zone in Sweden where the study area be...
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ftunivgoeteborg:oai:gupea.ub.gu.se:2077/72678 2023-10-29T02:38:59+01:00 Dendrochronological investigations of forest fire, tree ring growth and climate west of Puostijärvi lake, northern Sweden Roslund, Tobias Janvik Kardell, Erik University of Gothenburg/Department of Earth Sciences Göteborgs universitet/Institutionen för geovetenskaper 2022-07-05T12:35:23Z application/pdf https://hdl.handle.net/2077/72678 eng eng B1196 https://hdl.handle.net/2077/72678 Dendrochronology climate forest fires superposed epoch analysis climate correlation 2022 ftunivgoeteborg 2023-10-04T21:22:01Z How trees respond to climatic factors such as temperature and precipitation is well documented but can be locally different when other factors play a part in the process. Forest fires have had a large influence in boreal zones around the world and in the boreal zone in Sweden where the study area between Överkalix and Övertorneå is located. The methods inherent to dendrochronology are adapted in this thesis to answer how climatic factors and forest fires influence tree growth and to build three chronologies. 26 samples were used to create a chronology without fire scars spanning the years 1352 - 1983 and a total of 9 samples for the fire scar chronology with documented fires spanning between the years 1567 - 1922. The use of TSAPWin and COFECHA softwares for measuring and dating the samples was implemented with further analyses using a Pearson correlation and a first difference estimator for climate correlation and superposed epoch analysis used in ring width and fire scar variance to examine changes in growth after and before a fire event. The resulting chronology without fire scars showed statistical detectable results while five fires had confirmed matching years dated. Running the statistical analyses presented no significant correlation, not against climatic factors or effected growth patterns in relation to fire event years. The results presented in this study does however show that more research in the field is necessary and that a multitude of factors could influence tree growth locally making it difficult to pinpoint a single limiting factor. Other/Unknown Material Northern Sweden Överkalix Övertorneå University of Gothenburg: GUPEA (Gothenburg University Publications Electronic Archive) |
institution |
Open Polar |
collection |
University of Gothenburg: GUPEA (Gothenburg University Publications Electronic Archive) |
op_collection_id |
ftunivgoeteborg |
language |
English |
topic |
Dendrochronology climate forest fires superposed epoch analysis climate correlation |
spellingShingle |
Dendrochronology climate forest fires superposed epoch analysis climate correlation Roslund, Tobias Janvik Kardell, Erik Dendrochronological investigations of forest fire, tree ring growth and climate west of Puostijärvi lake, northern Sweden |
topic_facet |
Dendrochronology climate forest fires superposed epoch analysis climate correlation |
description |
How trees respond to climatic factors such as temperature and precipitation is well documented but can be locally different when other factors play a part in the process. Forest fires have had a large influence in boreal zones around the world and in the boreal zone in Sweden where the study area between Överkalix and Övertorneå is located. The methods inherent to dendrochronology are adapted in this thesis to answer how climatic factors and forest fires influence tree growth and to build three chronologies. 26 samples were used to create a chronology without fire scars spanning the years 1352 - 1983 and a total of 9 samples for the fire scar chronology with documented fires spanning between the years 1567 - 1922. The use of TSAPWin and COFECHA softwares for measuring and dating the samples was implemented with further analyses using a Pearson correlation and a first difference estimator for climate correlation and superposed epoch analysis used in ring width and fire scar variance to examine changes in growth after and before a fire event. The resulting chronology without fire scars showed statistical detectable results while five fires had confirmed matching years dated. Running the statistical analyses presented no significant correlation, not against climatic factors or effected growth patterns in relation to fire event years. The results presented in this study does however show that more research in the field is necessary and that a multitude of factors could influence tree growth locally making it difficult to pinpoint a single limiting factor. |
author2 |
University of Gothenburg/Department of Earth Sciences Göteborgs universitet/Institutionen för geovetenskaper |
author |
Roslund, Tobias Janvik Kardell, Erik |
author_facet |
Roslund, Tobias Janvik Kardell, Erik |
author_sort |
Roslund, Tobias |
title |
Dendrochronological investigations of forest fire, tree ring growth and climate west of Puostijärvi lake, northern Sweden |
title_short |
Dendrochronological investigations of forest fire, tree ring growth and climate west of Puostijärvi lake, northern Sweden |
title_full |
Dendrochronological investigations of forest fire, tree ring growth and climate west of Puostijärvi lake, northern Sweden |
title_fullStr |
Dendrochronological investigations of forest fire, tree ring growth and climate west of Puostijärvi lake, northern Sweden |
title_full_unstemmed |
Dendrochronological investigations of forest fire, tree ring growth and climate west of Puostijärvi lake, northern Sweden |
title_sort |
dendrochronological investigations of forest fire, tree ring growth and climate west of puostijärvi lake, northern sweden |
publishDate |
2022 |
url |
https://hdl.handle.net/2077/72678 |
genre |
Northern Sweden Överkalix Övertorneå |
genre_facet |
Northern Sweden Överkalix Övertorneå |
op_relation |
B1196 https://hdl.handle.net/2077/72678 |
_version_ |
1781065482689839104 |