Granens ankomst och etablering i Skandinavien under postglacial tid
(2022) In Examensarbeten i geologi vid Lunds universitet GEOL01 20221Department of Geology
- Abstract (Swedish)
- Att förstå hur vegetation reagerar på klimatförändringar är viktigt av flera skäl, inte minst eko-nomiska när det gäller träd som är betydelsefulla för skogsbruket såsom gran (Picea abies) och tall (Pinus Sylvest-ris). För att förstå detta behövs kunskap om de mekanismer som ligger bakom trädarternas respons på förändringar i deras levnadsmiljö, vilket man kan få från paleoekologisk forskning baserad på pollenanalyser, aDNA-analyser och makrofossilanalyser. Denna litteraturstudie behandlar litteratur om granens förekomst i Skandinavien under och efter den senaste istiden med utgångspunkt från fynd av vedrester och kottar av gran som gjorts i den skandinaviska fjällkedjan under 1990-talet och 2000-talet i områden som har tolkats som... (More)
- Att förstå hur vegetation reagerar på klimatförändringar är viktigt av flera skäl, inte minst eko-nomiska när det gäller träd som är betydelsefulla för skogsbruket såsom gran (Picea abies) och tall (Pinus Sylvest-ris). För att förstå detta behövs kunskap om de mekanismer som ligger bakom trädarternas respons på förändringar i deras levnadsmiljö, vilket man kan få från paleoekologisk forskning baserad på pollenanalyser, aDNA-analyser och makrofossilanalyser. Denna litteraturstudie behandlar litteratur om granens förekomst i Skandinavien under och efter den senaste istiden med utgångspunkt från fynd av vedrester och kottar av gran som gjorts i den skandinaviska fjällkedjan under 1990-talet och 2000-talet i områden som har tolkats som klimatiskt gynnsamma, s.k. kryptiska refugier. Syftet är att försöka sammanfatta kunskapsläget kring granens förekomst i Skandinavien under holocen och senglacial tid samt utvecklingen kring detta fram till idag. Fynden som uppvisar åldrar från tidig holocen har främst gjorts i centrala delarna av den skandinaviska fjällkedjan och de har, på grund av sina signifikanta åldrar, givit upphov till diskussioner kring granens historia i Skandinavien och ifrågasatt den traditionella synen på granens invandring till och spridning inom Skandinavien, bland annat har hypoteser framförts om att granen ska ha funnits väster om fjällkedjan och spridits österut därifrån. De äldsta fynden av gran som behandlas i denna studie är 12900 år gamla och är i form av vedrester som hittats vid Åreskutan år 2001. Det har även framförts hypoteser från forska-re angående de glaciala förhållandena under senglacial tid vad beträffar istäcket och klimatet under och efter isti-den. Forskare från flera olika discipliner har gett sin syn på hur dessa fynd bör tolkas samt kommit med egna tolk-ningar. Många undersökningar gjordes i samband med dessa fynd och diskussioner pågår än idag. Bland annat har man tittat på genetiska indikatorer som visar på skillnader mellan granar i västra och östra Skandinavien. (Less)
- Abstract
- The understanding of how vegetation reacts to climate changes can be considered important for many reasons, not least economical when it comes to trees that are important for forestry industry like spruce (Picea abies) and pine (Pinus Sylvestris). To understand this we need knowledge about the mechanics that lie behind these tree species’ responses to changes in their environment, which can be derived from paleoecologic research based on pollen analysis, aDNA-analysis and macrofossil analysis. This literature study deals with literature about the pre-sence of spruce in Scandinavia during and after the last glacial based on findings of wood, seeds and cones from spruce which have been made in the Scandinavian mountains during the 1990s and... (More)
- The understanding of how vegetation reacts to climate changes can be considered important for many reasons, not least economical when it comes to trees that are important for forestry industry like spruce (Picea abies) and pine (Pinus Sylvestris). To understand this we need knowledge about the mechanics that lie behind these tree species’ responses to changes in their environment, which can be derived from paleoecologic research based on pollen analysis, aDNA-analysis and macrofossil analysis. This literature study deals with literature about the pre-sence of spruce in Scandinavia during and after the last glacial based on findings of wood, seeds and cones from spruce which have been made in the Scandinavian mountains during the 1990s and 2000s in areas which have been interpreted as climatically favourable for the survival of spruce in so called cryptic refugia. The purpose of this stu-dy is to summarize the state of knowledge around the presence of spruce in Scandinavia during the Holocene and late glacial together with the development of this knowledge until today. The wood findings, which reach ages from the early Holocene have been found mainly in the central Scandinavian mountain range and they have been dated to significanttly high ages which has led to discussions around the history of the species in Scandinavia and ques-tioned the traditional view of the spruce immigration and spread in this region. For example there are hypotheses that spruce could have lived along the west coast of Norway during the glacial and spread eastwards from there. The oldest findings of spruce that are being discussed here are around 12900 years are from a piece of wood that was found at Mt. Åreskutan 2001. There have also been new hypotheses in relation to this by scientists in regards to the ice sheet and climate during and after the last deglaciation. Scientists from multiple disciplines have given their perspective on how these spruce findings should be interpreted and some have made studies as a result of these. Multiple studies were made in context to these findings and the discussion is still active today. Among other stu-dies, scientists have investigated the genetical differences between spruce populations in western and eastern Scan-dinavia. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9089546
- author
- Funck, Pontus LU
- supervisor
- organization
- course
- GEOL01 20221
- year
- 2022
- type
- M2 - Bachelor Degree
- subject
- keywords
- gran, picea abies, makrofossil, megafossil, pollenanalys, skogshistoria
- publication/series
- Examensarbeten i geologi vid Lunds universitet
- report number
- 637
- language
- Swedish
- id
- 9089546
- date added to LUP
- 2022-06-16 11:51:35
- date last changed
- 2022-06-16 11:51:35
@misc{9089546,
abstract = {{The understanding of how vegetation reacts to climate changes can be considered important for many reasons, not least economical when it comes to trees that are important for forestry industry like spruce (Picea abies) and pine (Pinus Sylvestris). To understand this we need knowledge about the mechanics that lie behind these tree species’ responses to changes in their environment, which can be derived from paleoecologic research based on pollen analysis, aDNA-analysis and macrofossil analysis. This literature study deals with literature about the pre-sence of spruce in Scandinavia during and after the last glacial based on findings of wood, seeds and cones from spruce which have been made in the Scandinavian mountains during the 1990s and 2000s in areas which have been interpreted as climatically favourable for the survival of spruce in so called cryptic refugia. The purpose of this stu-dy is to summarize the state of knowledge around the presence of spruce in Scandinavia during the Holocene and late glacial together with the development of this knowledge until today. The wood findings, which reach ages from the early Holocene have been found mainly in the central Scandinavian mountain range and they have been dated to significanttly high ages which has led to discussions around the history of the species in Scandinavia and ques-tioned the traditional view of the spruce immigration and spread in this region. For example there are hypotheses that spruce could have lived along the west coast of Norway during the glacial and spread eastwards from there. The oldest findings of spruce that are being discussed here are around 12900 years are from a piece of wood that was found at Mt. Åreskutan 2001. There have also been new hypotheses in relation to this by scientists in regards to the ice sheet and climate during and after the last deglaciation. Scientists from multiple disciplines have given their perspective on how these spruce findings should be interpreted and some have made studies as a result of these. Multiple studies were made in context to these findings and the discussion is still active today. Among other stu-dies, scientists have investigated the genetical differences between spruce populations in western and eastern Scan-dinavia.}},
author = {{Funck, Pontus}},
language = {{swe}},
note = {{Student Paper}},
series = {{Examensarbeten i geologi vid Lunds universitet}},
title = {{Granens ankomst och etablering i Skandinavien under postglacial tid}},
year = {{2022}},
}