Effects of climate change on boreal wetland and riparian vegetation
Models of climate change predict that temperature will increase during the 21th century and the largest warming will take place at high northern latitudes. In addition to warming, predictions for northern Europe include increased annual precipitation and a higher proportion of the precipitation duri...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2011
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ftumeauniv:oai:DiVA.org:umu-43811 2023-10-09T21:54:36+02:00 Effects of climate change on boreal wetland and riparian vegetation Ström, Lotta 2011 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-43811 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Institutionen för ekologi, miljö och geovetenskap, Department of Ecology and Environmental Sciences http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-43811 urn:isbn:978-91-7459-184-2 info:eu-repo/semantics/openAccess biomass flooding hydrologic niche invasibility riparian zone riparian plant species river margin climate scenario seed sowing experiment species composition species richness transplant experiment Ecology Ekologi Doctoral thesis, comprehensive summary info:eu-repo/semantics/doctoralThesis text 2011 ftumeauniv 2023-09-22T13:46:23Z Models of climate change predict that temperature will increase during the 21th century and the largest warming will take place at high northern latitudes. In addition to warming, predictions for northern Europe include increased annual precipitation and a higher proportion of the precipitation during winter falling as rain instead of snow. These changes will substantially alter the hydrology of rivers and streams and change the conditions for riverine communities. The warming is also expected to result in species adjusting their geographic ranges to stay within their climatic tolerances. Riparian zones and wetlands are areas where excess water determines the community composition. It is therefore likely that these systems will be highly responsive to alterations in precipitation and temperature patterns. In this thesis we have tested the predicted responses of riparian vegetation to climate-driven hydrologic change with a six year long transplant experiment (I). Turfs of vegetation were moved to a new elevation with shorter or longer flood durations. The results demonstrate that riparian species will respond to hydrologic changes, and that without rare events such as unusually large floods or droughts, full adjustment to the new hydrological regime may take at least 10 years. Moreover, we quantified potential effects of a changed hydrology on riparian plant species richness (II) and individual species responses (III) under different climate scenarios along the Vindel River in northern Sweden. Despite relatively small changes in hydrology, the results imply that many species will become less frequent than today, with stochastic extinctions along some reaches. Climate change may threaten riparian vegetation along some of the last pristine or near-natural river ecosystems in Europe. More extensive loss of species than predicted for the Vindel River is expected along rivers in the southern boreal zone, where snow-melt fed hydrographs are expected to be largely replaced by rain-fed ones. With a seed sowing ... Doctoral or Postdoctoral Thesis Northern Sweden Umeå University: Publications (DiVA) |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
biomass flooding hydrologic niche invasibility riparian zone riparian plant species river margin climate scenario seed sowing experiment species composition species richness transplant experiment Ecology Ekologi |
spellingShingle |
biomass flooding hydrologic niche invasibility riparian zone riparian plant species river margin climate scenario seed sowing experiment species composition species richness transplant experiment Ecology Ekologi Ström, Lotta Effects of climate change on boreal wetland and riparian vegetation |
topic_facet |
biomass flooding hydrologic niche invasibility riparian zone riparian plant species river margin climate scenario seed sowing experiment species composition species richness transplant experiment Ecology Ekologi |
description |
Models of climate change predict that temperature will increase during the 21th century and the largest warming will take place at high northern latitudes. In addition to warming, predictions for northern Europe include increased annual precipitation and a higher proportion of the precipitation during winter falling as rain instead of snow. These changes will substantially alter the hydrology of rivers and streams and change the conditions for riverine communities. The warming is also expected to result in species adjusting their geographic ranges to stay within their climatic tolerances. Riparian zones and wetlands are areas where excess water determines the community composition. It is therefore likely that these systems will be highly responsive to alterations in precipitation and temperature patterns. In this thesis we have tested the predicted responses of riparian vegetation to climate-driven hydrologic change with a six year long transplant experiment (I). Turfs of vegetation were moved to a new elevation with shorter or longer flood durations. The results demonstrate that riparian species will respond to hydrologic changes, and that without rare events such as unusually large floods or droughts, full adjustment to the new hydrological regime may take at least 10 years. Moreover, we quantified potential effects of a changed hydrology on riparian plant species richness (II) and individual species responses (III) under different climate scenarios along the Vindel River in northern Sweden. Despite relatively small changes in hydrology, the results imply that many species will become less frequent than today, with stochastic extinctions along some reaches. Climate change may threaten riparian vegetation along some of the last pristine or near-natural river ecosystems in Europe. More extensive loss of species than predicted for the Vindel River is expected along rivers in the southern boreal zone, where snow-melt fed hydrographs are expected to be largely replaced by rain-fed ones. With a seed sowing ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Ström, Lotta |
author_facet |
Ström, Lotta |
author_sort |
Ström, Lotta |
title |
Effects of climate change on boreal wetland and riparian vegetation |
title_short |
Effects of climate change on boreal wetland and riparian vegetation |
title_full |
Effects of climate change on boreal wetland and riparian vegetation |
title_fullStr |
Effects of climate change on boreal wetland and riparian vegetation |
title_full_unstemmed |
Effects of climate change on boreal wetland and riparian vegetation |
title_sort |
effects of climate change on boreal wetland and riparian vegetation |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2011 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-43811 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-43811 urn:isbn:978-91-7459-184-2 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1779318241368211456 |