Eurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystems
Arctic warming has been linked to observed increases in tundra shrub cover and growth in recent decades on the basis of significant relationships between deciduous shrub growth/biomass and temperature. These vegetation trends have been linked to Arctic sea-ice decline and thus to the sea-ice/albedo...
| Päätekijät: | , , , |
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| Aineistotyyppi: | Journal article |
| Kieli: | English |
| Julkaistu: |
2012
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| _version_ | 1826275564511559680 |
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| author | Macias-Fauria, M Forbes, B Zetterberg, P Kumpula, T |
| author_facet | Macias-Fauria, M Forbes, B Zetterberg, P Kumpula, T |
| author_sort | Macias-Fauria, M |
| collection | OXFORD |
| description | Arctic warming has been linked to observed increases in tundra shrub cover and growth in recent decades on the basis of significant relationships between deciduous shrub growth/biomass and temperature. These vegetation trends have been linked to Arctic sea-ice decline and thus to the sea-ice/albedo feedback known as Arctic amplification. However, the interactions between climate, sea ice and tundra vegetation remain poorly understood. Here we reveal a 50-year growth response over a >100,000ĝ€‰km 2 area to a rise in summer temperature for alder (Alnus) and willow (Salix), the most abundant shrub genera respectively at and north of the continental treeline. We demonstrate that whereas plant productivity is related to sea ice in late spring, the growing season peak responds to persistent synoptic-scale air masses over West Siberia associated with Fennoscandian weather systems through the Rossby wave train. Substrate is important for biomass accumulation, yet a strong correlation between growth and temperature encompasses all observed soil types. Vegetation is especially responsive to temperature in early summer. These results have significant implications for modelling present and future Low Arctic vegetation responses to climate change, and emphasize the potential for structurally novel ecosystems to emerge from within the tundra zone. © 2012 Macmillan Publishers Limited. All rights reserved. |
| first_indexed | 2024-03-06T23:00:39Z |
| format | Journal article |
| id | oxford-uuid:61fb3920-9e8e-4018-b39a-f3fa5bdf25bc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:00:39Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:61fb3920-9e8e-4018-b39a-f3fa5bdf25bc2022-03-26T18:03:25ZEurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystemsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:61fb3920-9e8e-4018-b39a-f3fa5bdf25bcEnglishSymplectic Elements at Oxford2012Macias-Fauria, MForbes, BZetterberg, PKumpula, TArctic warming has been linked to observed increases in tundra shrub cover and growth in recent decades on the basis of significant relationships between deciduous shrub growth/biomass and temperature. These vegetation trends have been linked to Arctic sea-ice decline and thus to the sea-ice/albedo feedback known as Arctic amplification. However, the interactions between climate, sea ice and tundra vegetation remain poorly understood. Here we reveal a 50-year growth response over a >100,000ĝ€‰km 2 area to a rise in summer temperature for alder (Alnus) and willow (Salix), the most abundant shrub genera respectively at and north of the continental treeline. We demonstrate that whereas plant productivity is related to sea ice in late spring, the growing season peak responds to persistent synoptic-scale air masses over West Siberia associated with Fennoscandian weather systems through the Rossby wave train. Substrate is important for biomass accumulation, yet a strong correlation between growth and temperature encompasses all observed soil types. Vegetation is especially responsive to temperature in early summer. These results have significant implications for modelling present and future Low Arctic vegetation responses to climate change, and emphasize the potential for structurally novel ecosystems to emerge from within the tundra zone. © 2012 Macmillan Publishers Limited. All rights reserved. |
| spellingShingle | Macias-Fauria, M Forbes, B Zetterberg, P Kumpula, T Eurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystems |
| title | Eurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystems |
| title_full | Eurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystems |
| title_fullStr | Eurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystems |
| title_full_unstemmed | Eurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystems |
| title_short | Eurasian Arctic greening reveals teleconnections and the potential for structurally novel ecosystems |
| title_sort | eurasian arctic greening reveals teleconnections and the potential for structurally novel ecosystems |
| work_keys_str_mv | AT maciasfauriam eurasianarcticgreeningrevealsteleconnectionsandthepotentialforstructurallynovelecosystems AT forbesb eurasianarcticgreeningrevealsteleconnectionsandthepotentialforstructurallynovelecosystems AT zetterbergp eurasianarcticgreeningrevealsteleconnectionsandthepotentialforstructurallynovelecosystems AT kumpulat eurasianarcticgreeningrevealsteleconnectionsandthepotentialforstructurallynovelecosystems |