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Dwelling in the dee...
Dwelling in the deep – strongly increased root growth and rooting depth enhance plant interactions with thawing permafrost soil
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- Blume-Werry, Gesche, 1985- (författare)
- Umeå University,Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Experimental Plant Ecology, Institute of Botany and Landscape Ecology, Greifswald University, Germany,Arcum
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- Milbau, Ann (författare)
- Umeå University,Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Research Institute for Nature and Forest INBO, Brussels, Belgium,Arcum
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- Teuber, Laurenz M. (författare)
- Umeå University,Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Experimental Plant Ecology, Institute of Botany and Landscape Ecology, Greifswald, Germany,University of Greifswald
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- Johansson, Margareta (författare)
- Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science
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- Dorrepaal, Ellen (författare)
- Umeå University,Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum
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(creator_code:org_t)
- 2019-06-20
- 2019
- Engelska.
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Ingår i: New Phytologist. - : John Wiley & Sons. - 0028-646X .- 1469-8137. ; 223:3, s. 1328-1339
- Relaterad länk:
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https://nph.onlineli...
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- Climate‐warming‐induced permafrost thaw exposes large amounts of carbon and nitrogen in soil at considerable depths, below the seasonally thawing active layer. The extent to which plant roots can reach and interact with these hitherto detached, deep carbon and nitrogen stores remains unknown.We aimed to quantify how permafrost thaw affects root dynamics across soil depths and plant functional types compared with above‐ground abundance, and potential consequences for plant–soil interactions.A decade of experimental permafrost thaw strongly increased total root length and growth in the active layer, and deep roots invaded the newly thawed permafrost underneath. Root litter input to soil across all depths was 10 times greater with permafrost thaw. Root growth timing was unaffected by experimental permafrost thaw but peaked later in deeper soil, reflecting the seasonally receding thaw front. Deep‐rooting species could sequester 15N added at the base of the ambient active layer in October, which was after root growth had ceased.Deep soil organic matter that has long been locked up in permafrost is thus no longer detached from plant processes upon thaw. Whether via nutrient uptake, carbon storage, or rhizosphere priming, plant root interactions with thawing permafrost soils may feed back on our climate both positively and negatively.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Markvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Soil Science (hsv//eng)
- LANTBRUKSVETENSKAPER -- Annan lantbruksvetenskap -- Miljö- och naturvårdsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Other Agricultural Sciences -- Environmental Sciences related to Agriculture and Land-use (hsv//eng)
Nyckelord
- arctic tundra
- Eriophorum
- fine roots
- minirhizotrons
- peatland
- root biomass
- root litter
- root phenology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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