Quarter century of mercury litterfall at a coniferous forest responding to climate change, Central Europe

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F24%3A00585760" target="_blank" >RIV/67985831:_____/24:00585760 - isvavai.cz</a>

Alternative codes found

RIV/86652079:_____/24:00585760

Result on the web

<a href="https://link.springer.com/article/10.1007/s11356-024-33555-9#citeas" target="_blank" >https://link.springer.com/article/10.1007/s11356-024-33555-9#citeas</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11356-024-33555-9" target="_blank" >10.1007/s11356-024-33555-9</a>

Result language

angličtina

Original language name

Quarter century of mercury litterfall at a coniferous forest responding to climate change, Central Europe

Original language description

This work evaluated the 25-year-long trends (1994–2018) in mercury (Hg) concentrations and fluxes in spruce litterfall at a forest research plot Načetín (NAC) recovering from acidic deposition in the Ore Mountains, Czech Republic. The mean litterfall Hg deposition averaged 51 ± 18 µg m−2 year−1, which has been the highest litterfall Hg deposition reported up to date on the European continent. In contrast, the wet deposition (2017–2019) was an order of magnitude lower averaging at 2.5 ± 1.5 µg m−2 year−1. All the spruce litterfall components bark, twigs, needles, cones, and a mixture of unidentified fragments had elevated mean Hg concentrations relative to background sites averaging 256 ± 77, 234 ± 62, 119 ± 23, 95 ± 14, and 44 ± 15 µg kg−1, respectively. Elevated litterfall Hg deposition and concentrations were attributed to the nearby local Hg emission source—coal-fired power plants. Temporally, the decrease of Czech Hg emissions since the 1990s was reflected by the decreasing trend of Hg concentrations in litterfall bark, cones, and twigs, while in needles and other material, Hg increased but insignificantly. Total litterfall ratios of Hg/C, Hg/N, and Hg/S were lower than those in soil O horizons averaging at 0.23 ± 0.04, 9.5 ± 2.0, and 170 ± 37 μg g−1, respectively. Since the beginning of monitoring, total litterfall Hg/C exhibited no trend, Hg/N decreased, and Hg/S increased. The litterfall biomass deposition averaging at 469 ± 176 g m−2 year−1 increased through time resulting in an increased Hg litterfall deposition at NAC by 1.1 µg m−2 year−1 despite the decreases in Czech Hg emissions. Peaks of annual litterfall Hg deposition up to 96 µg m−2 year−1 at NAC during the 25 years of monitoring resulted from weather extremes such as rime-snow accumulation, wind gusts, droughts, and insect infestation, which all significantly affected the annual biomass deposition. Based on our observations, further increases in biomass and litterfall Hg deposition rates can be expected due to the onset of bark beetle infestation and the increasing number of droughts caused by climate change.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/GA20-14292S" target="_blank" >GA20-14292S: Mercury - overlooked threat in the Czech ecosystems responding to global change</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Environmental Science and Pollution Research

ISSN

0944-1344

e-ISSN

1614-7499

Volume of the periodical

31

Issue of the periodical within the volume

24

Country of publishing house

DE - GERMANY

Number of pages

17

Pages from-to

34936-34952

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85192767664