Effects of tree pollen on throughfall element fluxes in European forests
The effects of tree pollen on precipitation chemistry are not fully understood and this can lead to misinterpretations of element deposition in European forests. We investigated the relationship between forest throughfall (TF) element fluxes and the Seasonal Pollen Integral (SPIn) using linear mixed-effects modelling (LME). TF was measured in 1990–2018 during the main pollen season (MPS, arbitrary two months) in 61 managed, mostly pure, even-aged Fagus, Quercus, Pinus, and Picea stands which are part of the ICP Forests Level II network. The SPIn for the dominant tree genus was observed at 56 aerobiological monitoring stations in nearby cities. The net contribution of pollen was estimated as the TF flux in the MPS minus the fluxes in the preceding and succeeding months. In stands of Fagus and Picea, two genera that do not form large amounts of flowers every year, TF fluxes of potassium (K+), ammonium-nitrogen (NH4+-N), dissolved organic carbon (DOC), and dissolved organic nitrogen (DON) showed a positive relationship with SPIn. However- for Fagus- a negative relationship was found between TF nitrate-nitrogen (NO3−-N) fluxes and SPIn. For Quercus and Pinus, two genera producing many flowers each year, SPIn displayed limited variability and no clear association with TF element fluxes. Overall, pollen contributed on average 4.1–10.6% of the annual TF fluxes of K+ > DOC > DON > NH4+-N with the highest contribution in Quercus > Fagus > Pinus > Picea stands. Tree pollen appears to affect TF inorganic nitrogen fluxes both qualitatively and quantitatively, acting as a source of NH4+-N and a sink of NO3−-N. Pollen appears to play a more complex role in nutrient cycling than previously thought.
Details
| Type | A1: Web of Science-article |
|---|---|
| Category | Research |
| Magazine | Biogeochemistry |
| Issns | 1573-515X |
| Language | English |
Bibtex
@misc{1bfefddc-c0ca-45bd-8f51-11ec696365bf,
title = "Effects of tree pollen on throughfall element fluxes in European forests",
abstract = "The effects of tree pollen on precipitation chemistry are not fully understood and this can lead to misinterpretations of element deposition in European forests. We investigated the relationship between forest throughfall (TF) element fluxes and the Seasonal Pollen Integral (SPIn) using linear mixed-effects modelling (LME). TF was measured in 1990–2018 during the main pollen season (MPS, arbitrary two months) in 61 managed, mostly pure, even-aged Fagus, Quercus, Pinus, and Picea stands which are part of the ICP Forests Level II network. The SPIn for the dominant tree genus was observed at 56 aerobiological monitoring stations in nearby cities. The net contribution of pollen was estimated as the TF flux in the MPS minus the fluxes in the preceding and succeeding months. In stands of Fagus and Picea, two genera that do not form large amounts of flowers every year, TF fluxes of potassium (K+), ammonium-nitrogen (NH4+-N), dissolved organic carbon (DOC), and dissolved organic nitrogen (DON) showed a positive relationship with SPIn. However- for Fagus- a negative relationship was found between TF nitrate-nitrogen (NO3−-N) fluxes and SPIn. For Quercus and Pinus, two genera producing many flowers each year, SPIn displayed limited variability and no clear association with TF element fluxes. Overall, pollen contributed on average 4.1–10.6% of the annual TF fluxes of K+ > DOC > DON > NH4+-N with the highest contribution in Quercus > Fagus > Pinus > Picea stands. Tree pollen appears to affect TF inorganic nitrogen fluxes both qualitatively and quantitatively, acting as a source of NH4+-N and a sink of NO3−-N. Pollen appears to play a more complex role in nutrient cycling than previously thought.",
author = "Arne Verstraeten and Nicolas Bruffaerts and Fabiana Cristofolini and Elena Vanguelova and Johan Neirynck and Gerrit Genouw and Bruno De Vos and Peter Waldner and Anne Thimonier and Anita Nussbaumer and Mathias Neumann and Sue Benham and Pasi Rautio and Liisa Ukonmaanaho and Päivi Merilä and Antti-Jussi Lindroos and Annika Saarto and Jukka Reiniharju and Nicholas Clarke and Volkmar Timmermann and Manuel Nicolas and Maria Schmitt and Katrin Meusburger and Anna Kowalska and Idalia Kasprzyk and Katarzyna Kluska and Łukasz Grewling and Małgorzata Malkiewicz and Lars Vesterdal and Morten Ingerslev and Miklós Manninger and Donát Magyar and Hugues Titeux and Gunilla Pihl Karlsson and Regula Gehrig and Sandy Adriaenssens and Agneta Ekebom and Åslög Dahl and Marco Ferretti and Elena Gottardini",
year = "2023",
month = sep,
day = "14",
doi = "https://doi.org/10.1007/s10533-023-01082-3",
language = "English",
publisher = "Instituut voor Natuur- en Bosonderzoek",
address = "Belgium,
type = "Other"
}
Authors
Arne VerstraetenNicolas Bruffaerts
Fabiana Cristofolini
Elena Vanguelova
Johan Neirynck
Gerrit Genouw
Bruno De Vos
Peter Waldner
Anne Thimonier
Anita Nussbaumer
Mathias Neumann
Sue Benham
Pasi Rautio
Liisa Ukonmaanaho
Päivi Merilä
Antti-Jussi Lindroos
Annika Saarto
Jukka Reiniharju
Nicholas Clarke
Volkmar Timmermann
Manuel Nicolas
Maria Schmitt
Katrin Meusburger
Anna Kowalska
Idalia Kasprzyk
Katarzyna Kluska
Łukasz Grewling
Małgorzata Malkiewicz
Lars Vesterdal
Morten Ingerslev
Miklós Manninger
Donát Magyar
Hugues Titeux
Gunilla Pihl Karlsson
Regula Gehrig
Sandy Adriaenssens
Agneta Ekebom
Åslög Dahl
Marco Ferretti
Elena Gottardini