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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/86652079:_____/24:00585760

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/GA20-14292S" target="_blank" >GA20-14292S: Rtuť - přehlížená hrozba v ekosystémech České republiky reagujících na globální změnu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Environmental Science and Pollution Research

ISSN

0944-1344

e-ISSN

1614-7499

Svazek periodika

31

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

17

Strana od-do

34936-34952

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85192767664