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Dissolved and gaseous nitrogen losses in forests controlled by soil nutrient stoichiometry
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SYSNO ASEP 0543408 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dissolved and gaseous nitrogen losses in forests controlled by soil nutrient stoichiometry Author(s) Oulehle, Filip (UEK-B) RID, ORCID, SAI
Goodale, C. L. (US)
Evans, C. D. (GB)
Chuman, T. (CZ)
Hruška, Jakub (UEK-B) RID, SAI, ORCID
Krám, Pavel (UEK-B) RID, SAI, ORCID
Navrátil, Tomáš (GLU-S) RID, SAI, ORCID
Tesař, Miroslav (UH-J) ORCID, SAI, RID
Ač, Alexander (UEK-B) RID, ORCID, SAI
Urban, Otmar (UEK-B) RID, ORCID, SAI
Tahovská, K. (CZ)Number of authors 11 Article number 064025 Source Title Environmental Research Letters. - : Institute of Physics Publishing - ISSN 1748-9326
Roč. 16, č. 6 (2021)Number of pages 11 s. Language eng - English Country GB - United Kingdom Keywords n-15 natural-abundance ; organic-matter ; isotope fractionation ; diffusion technique ; global patterns ; n fixation ; deposition ; denitrification ; terrestrial ; nitrate ; nitrogen ; catchment ; isotope ; mass balance ; denitrification ; carbon ; sequestration Subject RIV EH - Ecology, Behaviour OECD category Environmental sciences (social aspects to be 5.7) Subject RIV - cooperation Institute of Geology - Geochemistry
Institute of Hydrodynamics - Hydrology ; LimnologyR&D Projects GA18-17295S GA ČR - Czech Science Foundation (CSF) LM2015055 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_019/0000797 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure CzeCOS III - 90123 - Ústav výzkumu globální změny AV ČR, v. v. i. Method of publishing Open access Institutional support UEK-B - RVO:86652079 ; GLU-S - RVO:67985831 ; UH-J - RVO:67985874 UT WOS 000655341900001 EID SCOPUS 85107763814 DOI 10.1088/1748-9326/ac007b Annotation Global chronic nitrogen (N) deposition to forests can alleviate ecosystem N limitation, with potentially wide ranging consequences for biodiversity, carbon sequestration, soil and surface water quality, and greenhouse gas emissions. However, the ability to predict these consequences requires improved quantification of hard-to-measure N fluxes, particularly N gas loss and soil N retention. Here we combine a unique set of long-term catchment N budgets in the central Europe with ecosystem N-15 data to reveal fundamental controls over dissolved and gaseous N fluxes in temperate forests. Stream leaching losses of dissolved N corresponded with nutrient stoichiometry of the forest floor, with stream N losses increasing as ecosystems progress towards phosphorus limitation, while soil N storage increased with oxalate extractable iron and aluminium content. Our estimates of soil gaseous losses based on N-15 stocks averaged 2.5 +/- 2.2 kg N ha(-1) yr(-1) and comprised 20% +/- 14% of total N deposition. Gaseous N losses increased with forest floor N:P ratio and with dissolved N losses. Our relationship between gaseous and dissolved N losses was also able to explain previous N-15-based N loss rates measured in tropical and subtropical catchments, suggesting a generalisable response driven by nitrate (NO3 (-)) abundance and in which the relative importance of dissolved N over gaseous N losses tended to increase with increasing NO3 (-) export. Applying this relationship globally, we extrapolated current gaseous N loss flux from forests to be 8.9 Tg N yr(-1), which represent 39% of current N deposition to forests worldwide. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2022 Electronic address https://iopscience.iop.org/article/10.1088/1748-9326/ac007b
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