The hidden life of plants : fine root dynamics in northern ecosystems
Fine roots constitute a large part of the primary production in northern (arctic and boreal) ecosystems, and are key players in ecosystem fluxes of water, nutrients and carbon. Data on root dynamics are generally rare, especially so in northern ecosystems. However, those ecosystems undergo the most...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2016
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ftumeauniv:oai:DiVA.org:umu-124757 2023-10-09T21:43:57+02:00 The hidden life of plants : fine root dynamics in northern ecosystems Blume-Werry, Gesche 2016 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-124757 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Umeå : Umeå Universitet orcid:0000-0003-0909-670X http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-124757 urn:isbn:978-91-7601-533-9 info:eu-repo/semantics/openAccess Arctic belowground boreal climate change fine roots heath meadow minirhizotron permafrost phenology plant community root biomass root growth root litter root production subarctic tundra Ecology Ekologi Doctoral thesis, comprehensive summary info:eu-repo/semantics/doctoralThesis text 2016 ftumeauniv 2023-09-22T13:54:54Z Fine roots constitute a large part of the primary production in northern (arctic and boreal) ecosystems, and are key players in ecosystem fluxes of water, nutrients and carbon. Data on root dynamics are generally rare, especially so in northern ecosystems. However, those ecosystems undergo the most rapid climatic changes on the planet and a profound understanding of form, function and dynamics of roots in such ecosystems is essential. This thesis aimed to advance our knowledge about fine root dynamics in northern ecosystems, with a focus on fine root phenology in natural plant communities and how climate change might alter it. Factors considered included thickness and duration of snow cover, thawing of permafrost, as well as natural gradients in temperature. Experiments and observational studies were located around Abisko (68°21' N, 18°45' E), and in a boreal forest close to Vindeln (64°14'N, 19°46'E), northern Sweden. Root responses included root growth, total root length, and root litter input, always involving seasonal changes therein, measured with minirhizotrons. Root biomass was also determined with destructive soil sampling. Additionally, aboveground response parameters, such as phenology and growth, and environmental parameters, such as air and soil temperatures, were assessed. This thesis reveals that aboveground patterns or responses cannot be directly translated belowground and urges a decoupling of above- and belowground phenology in terrestrial biosphere models. Specifically, root growth occurred outside of the photosynthetically active period of tundra plants. Moreover, patterns observed in arctic and boreal ecosystems diverged from those of temperate systems, and models including root parameters may thus need specific parameterization for northern ecosystems. In addition, this thesis showed that plant communities differ in root properties, and that changes in plant community compositions can thus induce changes in root dynamics and functioning. This underlines the importance of a thorough ... Doctoral or Postdoctoral Thesis Abisko Arctic Climate change Northern Sweden permafrost Subarctic Tundra Umeå University: Publications (DiVA) Arctic Abisko ENVELOPE(18.829,18.829,68.349,68.349) |
institution |
Open Polar |
collection |
Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Arctic belowground boreal climate change fine roots heath meadow minirhizotron permafrost phenology plant community root biomass root growth root litter root production subarctic tundra Ecology Ekologi |
spellingShingle |
Arctic belowground boreal climate change fine roots heath meadow minirhizotron permafrost phenology plant community root biomass root growth root litter root production subarctic tundra Ecology Ekologi Blume-Werry, Gesche The hidden life of plants : fine root dynamics in northern ecosystems |
topic_facet |
Arctic belowground boreal climate change fine roots heath meadow minirhizotron permafrost phenology plant community root biomass root growth root litter root production subarctic tundra Ecology Ekologi |
description |
Fine roots constitute a large part of the primary production in northern (arctic and boreal) ecosystems, and are key players in ecosystem fluxes of water, nutrients and carbon. Data on root dynamics are generally rare, especially so in northern ecosystems. However, those ecosystems undergo the most rapid climatic changes on the planet and a profound understanding of form, function and dynamics of roots in such ecosystems is essential. This thesis aimed to advance our knowledge about fine root dynamics in northern ecosystems, with a focus on fine root phenology in natural plant communities and how climate change might alter it. Factors considered included thickness and duration of snow cover, thawing of permafrost, as well as natural gradients in temperature. Experiments and observational studies were located around Abisko (68°21' N, 18°45' E), and in a boreal forest close to Vindeln (64°14'N, 19°46'E), northern Sweden. Root responses included root growth, total root length, and root litter input, always involving seasonal changes therein, measured with minirhizotrons. Root biomass was also determined with destructive soil sampling. Additionally, aboveground response parameters, such as phenology and growth, and environmental parameters, such as air and soil temperatures, were assessed. This thesis reveals that aboveground patterns or responses cannot be directly translated belowground and urges a decoupling of above- and belowground phenology in terrestrial biosphere models. Specifically, root growth occurred outside of the photosynthetically active period of tundra plants. Moreover, patterns observed in arctic and boreal ecosystems diverged from those of temperate systems, and models including root parameters may thus need specific parameterization for northern ecosystems. In addition, this thesis showed that plant communities differ in root properties, and that changes in plant community compositions can thus induce changes in root dynamics and functioning. This underlines the importance of a thorough ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Blume-Werry, Gesche |
author_facet |
Blume-Werry, Gesche |
author_sort |
Blume-Werry, Gesche |
title |
The hidden life of plants : fine root dynamics in northern ecosystems |
title_short |
The hidden life of plants : fine root dynamics in northern ecosystems |
title_full |
The hidden life of plants : fine root dynamics in northern ecosystems |
title_fullStr |
The hidden life of plants : fine root dynamics in northern ecosystems |
title_full_unstemmed |
The hidden life of plants : fine root dynamics in northern ecosystems |
title_sort |
hidden life of plants : fine root dynamics in northern ecosystems |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2016 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-124757 |
long_lat |
ENVELOPE(18.829,18.829,68.349,68.349) |
geographic |
Arctic Abisko |
geographic_facet |
Arctic Abisko |
genre |
Abisko Arctic Climate change Northern Sweden permafrost Subarctic Tundra |
genre_facet |
Abisko Arctic Climate change Northern Sweden permafrost Subarctic Tundra |
op_relation |
orcid:0000-0003-0909-670X http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-124757 urn:isbn:978-91-7601-533-9 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1779321619319095296 |