Mercury cycling in the Czech GEOMON network catchments recovering from acid deposition and facing climate change

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F25%3A00619220" target="_blank" >RIV/67985831:_____/25:00619220 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985874:_____/25:00619220 RIV/00025798:_____/25:10169677

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10533-025-01231-w" target="_blank" >https://link.springer.com/article/10.1007/s10533-025-01231-w</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10533-025-01231-w" target="_blank" >10.1007/s10533-025-01231-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mercury cycling in the Czech GEOMON network catchments recovering from acid deposition and facing climate change

Popis výsledku v původním jazyce

We used the catchment mass balance approach to investigate mercury (Hg) cycling at the 14 forested GEOMON catchments of the Czech Geological Survey. The temperate forest catchments had variable exposure to historic high sulfur (S) and Hg emissions, and span a range of size and elevation. We monitored monthly Hg inputs (bulk precipitation, throughfall, litterfall) and outputs (stream runoff) during 2020–2022. The catchments spanned a large gradient of historic Hg deposition, but current Hg patterns more closely aligned with catchment factors like local climate, as influenced by elevation, dissolved organic carbon (DOC) concentrations, and geology. The dominant pathway of Hg input was litterfall (averaging 44.5 ± 15.7 μg m−2 yr−1, > 91% of total input). Two surprising findings were that GEOMON had low Hg concentrations and fluxes in general but had the highest litterfall Hg fluxes in Europe, and these increased even further in forested areas that had bark beetle infestations. Gaseous elemental mercury (GEM), measured using passive samplers, was consistently low (1.25 to 1.66 ng m−3) across the 14 catchments. Stream Hg output varied across catchments and averaged 1.5 ± 1.7 μg m−2 yr−1. The average Hg retention rate at the 14 GEOMON catchments, calculated as the fraction of average Hg inputs (throughfall + litterfall) that remained in the catchment and did not run off in streamwater, was 97%. The high catchment Hg retention combined with its strong association with DOC suggests that with climate change intensification of carbon cycling, these catchments will be a Hg source for decades to come.

Název v anglickém jazyce

Mercury cycling in the Czech GEOMON network catchments recovering from acid deposition and facing climate change

Popis výsledku anglicky

We used the catchment mass balance approach to investigate mercury (Hg) cycling at the 14 forested GEOMON catchments of the Czech Geological Survey. The temperate forest catchments had variable exposure to historic high sulfur (S) and Hg emissions, and span a range of size and elevation. We monitored monthly Hg inputs (bulk precipitation, throughfall, litterfall) and outputs (stream runoff) during 2020–2022. The catchments spanned a large gradient of historic Hg deposition, but current Hg patterns more closely aligned with catchment factors like local climate, as influenced by elevation, dissolved organic carbon (DOC) concentrations, and geology. The dominant pathway of Hg input was litterfall (averaging 44.5 ± 15.7 μg m−2 yr−1, > 91% of total input). Two surprising findings were that GEOMON had low Hg concentrations and fluxes in general but had the highest litterfall Hg fluxes in Europe, and these increased even further in forested areas that had bark beetle infestations. Gaseous elemental mercury (GEM), measured using passive samplers, was consistently low (1.25 to 1.66 ng m−3) across the 14 catchments. Stream Hg output varied across catchments and averaged 1.5 ± 1.7 μg m−2 yr−1. The average Hg retention rate at the 14 GEOMON catchments, calculated as the fraction of average Hg inputs (throughfall + litterfall) that remained in the catchment and did not run off in streamwater, was 97%. The high catchment Hg retention combined with its strong association with DOC suggests that with climate change intensification of carbon cycling, these catchments will be a Hg source for decades to come.

Druh

J_imp - Článek v periodiku v databázi Web of Science

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

2025

Kód důvěrnosti údajů

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

Název periodika

Biogeochemistry

ISSN

0168-2563

e-ISSN

1573-515X

Svazek periodika

168

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

26

Strana od-do

45

Kód UT WoS článku

001475367100001

EID výsledku v databázi Scopus

2-s2.0-105003496849