Physiological and climate controls on foliar mercury uptake by European tree species

Autor: Morten Ingerslev, Nadine Eickenscheidt, Pasi Rautio, Anna Kowalska, Peter Waldner, Lena Wohlgemuth, Lars Vesterdal, Manuel Nicolas, Alexander Russ, Anne Thimonier, Alfred Fürst, Carmen Iacoban, Päivi Merilä, Volkmar Timmermann, Sue Benham, Bernd Ahrends, Christine Alewell, Martin Jiskra, Günter Hoch, Martin Greve, Peter Roskams
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Biogeosciences
Wohlgemuth, L, Rautio, P, Ahrends, B, Russ, A, Vesterdal, L, Waldner, P, Timmermann, V, Eickenscheidt, N, Fürst, A, Greve, M, Roskams, P, Thimonier, A, Nicolas, M, Kowalska, A, Ingerslev, M, Merilä, P, Benham, S, Iacoban, C, Hoch, G, Alewell, C & Jiskra, M 2022, ' Physiological and climate controls on foliar mercury uptake by European tree species ', Biogeosciences, vol. 19, no. 5, pp. 1335-1353 . https://doi.org/10.5194/bg-19-1335-2022
ISSN: 1726-4189
Popis: Despite the importance of vegetation uptake of atmospheric gaseous elemental mercury (Hg(0)) within the global Hg cycle, little knowledge exists on the physiological, climatic and geographic factors controlling stomatal uptake of atmospheric Hg(0) by tree foliage. We investigate controls on foliar stomatal Hg(0) uptake by combining Hg measurements of 3,569 foliage samples across Europe with data on tree species traits and environmental conditions. To account for foliar Hg accumulation over time, we normalized foliar Hg concentration over the foliar life period from the simulated start of the growing season to sample harvest. The most relevant parameter impacting daily foliar stomatal Hg uptake was tree functional group (deciduous versus coniferous trees). On average, we measured 3.2 times higher daily foliar stomatal Hg uptake rates in deciduous leaves than in coniferous needles of the same age. Across tree species, for foliage of beech and fir, and at two out of three forest plots with more than 20 samples, we found a significant (p
Databáze: OpenAIRE
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