Höstfenologi i norra Sveriges fjällkedja : Sker invintring av växter samtidigt oberoende av varierande topografi och vegetation?
Although the autumn phenology of plants is important for a wide range of processes including primary production, carbon sequestration and food availability for herbivores, few studies have addressed spatial variation of autumn phenology and how it changes with climate change. The greatest increase o...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2019
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ftsprs:oai:DiVA.org:polar-8380 2023-05-15T14:59:23+02:00 Höstfenologi i norra Sveriges fjällkedja : Sker invintring av växter samtidigt oberoende av varierande topografi och vegetation? Autumn phenology of plant communities in the Swedish mountains. Oja, Katarina 2019 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8380 swe swe Umeå universitet, Institutionen för ekologi, miljö och geovetenskap http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8380 info:eu-repo/semantics/openAccess Ecology Ekologi Student thesis info:eu-repo/semantics/bachelorThesis text 2019 ftsprs 2022-07-10T16:16:53Z Although the autumn phenology of plants is important for a wide range of processes including primary production, carbon sequestration and food availability for herbivores, few studies have addressed spatial variation of autumn phenology and how it changes with climate change. The greatest increase of temperature is predicted near the pole and therefor it is important to estimate how this change will affect Arctic ecosystems. The phenology of vegetation is a valuable indicator of climate change and knowledge about phenology will give indications how the Arctic terrestrial ecosystems will react on climate changes. So far, the spring phenology is well-known compared to the autumn phenology. The aim of this study was to examine how autumn phenology varies among and within locations in forest-tundra ecotone in Northwestern Sweden. The phenology of the plant communities was measured spectrally with the Normalized Difference Vegetation Index [NDVI]. This allow me to directly compare the results of this study with the results from large scale studies using satellite-derived indices. I found that the timing of the autumn senescence varies among locations, topographic positions and vegetation types. These results are important because they contribute to a more nuanced understanding of the processes regulating primary production and food availability for herbivores in the Scandinavian mountains, and provide important information for forecasting the responses of these ecosystems to future climate changes. Bachelor Thesis Arctic Climate change Tundra Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA) Arctic |
institution |
Open Polar |
collection |
Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA) |
op_collection_id |
ftsprs |
language |
Swedish |
topic |
Ecology Ekologi |
spellingShingle |
Ecology Ekologi Oja, Katarina Höstfenologi i norra Sveriges fjällkedja : Sker invintring av växter samtidigt oberoende av varierande topografi och vegetation? |
topic_facet |
Ecology Ekologi |
description |
Although the autumn phenology of plants is important for a wide range of processes including primary production, carbon sequestration and food availability for herbivores, few studies have addressed spatial variation of autumn phenology and how it changes with climate change. The greatest increase of temperature is predicted near the pole and therefor it is important to estimate how this change will affect Arctic ecosystems. The phenology of vegetation is a valuable indicator of climate change and knowledge about phenology will give indications how the Arctic terrestrial ecosystems will react on climate changes. So far, the spring phenology is well-known compared to the autumn phenology. The aim of this study was to examine how autumn phenology varies among and within locations in forest-tundra ecotone in Northwestern Sweden. The phenology of the plant communities was measured spectrally with the Normalized Difference Vegetation Index [NDVI]. This allow me to directly compare the results of this study with the results from large scale studies using satellite-derived indices. I found that the timing of the autumn senescence varies among locations, topographic positions and vegetation types. These results are important because they contribute to a more nuanced understanding of the processes regulating primary production and food availability for herbivores in the Scandinavian mountains, and provide important information for forecasting the responses of these ecosystems to future climate changes. |
format |
Bachelor Thesis |
author |
Oja, Katarina |
author_facet |
Oja, Katarina |
author_sort |
Oja, Katarina |
title |
Höstfenologi i norra Sveriges fjällkedja : Sker invintring av växter samtidigt oberoende av varierande topografi och vegetation? |
title_short |
Höstfenologi i norra Sveriges fjällkedja : Sker invintring av växter samtidigt oberoende av varierande topografi och vegetation? |
title_full |
Höstfenologi i norra Sveriges fjällkedja : Sker invintring av växter samtidigt oberoende av varierande topografi och vegetation? |
title_fullStr |
Höstfenologi i norra Sveriges fjällkedja : Sker invintring av växter samtidigt oberoende av varierande topografi och vegetation? |
title_full_unstemmed |
Höstfenologi i norra Sveriges fjällkedja : Sker invintring av växter samtidigt oberoende av varierande topografi och vegetation? |
title_sort |
höstfenologi i norra sveriges fjällkedja : sker invintring av växter samtidigt oberoende av varierande topografi och vegetation? |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2019 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8380 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Tundra |
genre_facet |
Arctic Climate change Tundra |
op_relation |
http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8380 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766331498315644928 |