Changing sub-Arctic tundra vegetation upon permafrost degradation: impact on foliar mineral element cycling
Abstract ∼ 500 samples of typical tundra plant species from two contrasting Alaskan tundra sites, i.e., an experimental sedge-dominated site (Carbon in Permafrost Experimental Heating Research, CiPEHR) and natural shrub-dominated site (Gradient). The foliar concentration of these mineral elements was species specific, with sedge leaves having relatively high Si concentration and shrub leaves having relatively high Ca and Mn concentrations. Therefore, changes in the species biomass composition of the Arctic tundra in response to permafrost thaw are expected to be the main factors that dictate changes in elemental composition of foliar stocks and maximum potential foliar fluxes upon litterfall. We observed an increase in the mineral element foliar stocks and potential annual litterfall fluxes, with Si increasing with sedge expansion in wetter sites (CiPEHR), and Ca and Mn increasing with shrub expansion in drier sites (Gradient). Consequently, we expect that sedge and shrub expansion upon permafrost thaw will lead to changes in litter elemental composition and therefore affect nutrient cycling across the sub-Arctic tundra with potential implications for further vegetation succession.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Changing sub-Arctic tundra vegetation upon permafrost degradation: impact on foliar mineral element cycling ; volume:19 ; number:9 ; year:2022 ; pages:2333-2351 ; extent:19
Biogeosciences ; 19, Heft 9 (2022), 2333-2351 (gesamt 19)
- Urheber
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Mauclet, Elisabeth
Agnan, Yannick
Hirst, Catherine
Monhonval, Arthur
Pereira, Benoît
Vandeuren, Aubry
Villani, Maëlle
Ledman, Justin
Taylor, Meghan
Jasinski, Briana L.
Schuur, Edward A. G.
Opfergelt, Sophie
- DOI
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10.5194/bg-19-2333-2022
- URN
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urn:nbn:de:101:1-2022051205273670261991
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:37 MESZ
Datenpartner
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Beteiligte
- Mauclet, Elisabeth
- Agnan, Yannick
- Hirst, Catherine
- Monhonval, Arthur
- Pereira, Benoît
- Vandeuren, Aubry
- Villani, Maëlle
- Ledman, Justin
- Taylor, Meghan
- Jasinski, Briana L.
- Schuur, Edward A. G.
- Opfergelt, Sophie
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