Mercury Stable Isotope Composition of Lichens and Mosses from Northern Eurasia Reveals Hg Deposition Pathways and Sources
Mercury (Hg) concentrations in lichens and mosses can be used as surrogates for atmospheric Hg deposition to continental surfaces. In this study, we collected and analyzed Hg concentrations ( n = 334) and isotopic composition ( n = 67) of epiphytic tree lichens and terricolous lichens and mosses fro...
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2022
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Online Access: | https://doi.org/10.1021/acsearthspacechem.2c00297.s001 |
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ftunivfreestate:oai:figshare.com:article/21753433 2023-05-15T14:53:43+02:00 Mercury Stable Isotope Composition of Lichens and Mosses from Northern Eurasia Reveals Hg Deposition Pathways and Sources Jeroen E. Sonke (1472950) Vladimir P. Shevchenko (14279572) Jonathan Prunier (14279575) Ruoyu Sun (1785805) Anatoly S. Prokushkin (14279578) Oleg S. Pokrovsky (821057) 2022-12-19T00:00:00Z https://doi.org/10.1021/acsearthspacechem.2c00297.s001 unknown https://figshare.com/articles/dataset/Mercury_Stable_Isotope_Composition_of_Lichens_and_Mosses_from_Northern_Eurasia_Reveals_Hg_Deposition_Pathways_and_Sources/21753433 doi:10.1021/acsearthspacechem.2c00297.s001 CC BY-NC 4.0 CC-BY-NC Microbiology Cell Biology Genetics Molecular Biology Physiology Pharmacology Ecology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified remote locations across isotopic composition (< 7700 ng g 74 ng g 35 ng g 300 km inland 243 ng g inland terricolous lichen regional soil hg preferentially accumulate hg identifies preferential hg hg signatures suggest hg isotope variability ii </ sup 72 ° n 202 </ sup 200 </ sup 199 </ sup hg deposition pathways dry deposition compared colocated terricolous lichens arctic ocean shore epiphytic tree lichens atmospheric hg deposition terricolous lichens near 15 ‰ similar 0 </ sup n </ dry deposition terricolous lichens atmospheric hg tree lichens total hg oxidized hg near zero 1 ‰ − 3 substantially higher sources mercury Dataset 2022 ftunivfreestate https://doi.org/10.1021/acsearthspacechem.2c00297.s001 2022-12-23T00:29:41Z Mercury (Hg) concentrations in lichens and mosses can be used as surrogates for atmospheric Hg deposition to continental surfaces. In this study, we collected and analyzed Hg concentrations ( n = 334) and isotopic composition ( n = 67) of epiphytic tree lichens and terricolous lichens and mosses from remote locations across the Eurasian Arctic and sub-Arctic (50 to 72° N, 30 to 180° E). The total Hg (THg) concentrations ranged from 13 to 7700 ng g –1 . Epiphytic tree lichens had significantly higher median THg levels (243 ng g –1 ) than terricolous lichens (35 ng g –1 ) and mosses (74 ng g –1 ). THg is substantially higher in both tree lichens and terricolous lichens near the Arctic Ocean shore and up to 300 km inland. The combined δ 202 Hg, Δ 199 Hg, and Δ 200 Hg signatures suggest that the elevated coastal Hg levels are delivered by marine air masses rich in gaseous and particulate-oxidized Hg II forms, such as HgBr 2 . Similar to other vegetation Hg isotope studies, inland terricolous lichen and moss Δ 200 Hg are near zero, indicating a dominant (63%) atmospheric Hg 0 origin followed by Hg II wet and dry deposition. Inland tree lichens carry a more positive Δ 200 Hg of 0.15‰, similar to the atmospheric Hg II end-member, suggesting that they preferentially accumulate Hg II wet and dry deposition compared to colocated terricolous lichens. Mosses from the European sub-Arctic show a low δ 202 Hg of −3.1‰, which we speculate to result from regional soil Hg 0 emissions that are recaptured by mosses. Overall, the Hg isotope variability of mosses and lichens reveals latitudinal gradients in Hg deposition pathways and identifies preferential Hg 0 or Hg II uptake. Dataset Arctic Arctic Ocean KovsieScholar Repository (University of the Free State - UFS UV) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
KovsieScholar Repository (University of the Free State - UFS UV) |
op_collection_id |
ftunivfreestate |
language |
unknown |
topic |
Microbiology Cell Biology Genetics Molecular Biology Physiology Pharmacology Ecology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified remote locations across isotopic composition (< 7700 ng g 74 ng g 35 ng g 300 km inland 243 ng g inland terricolous lichen regional soil hg preferentially accumulate hg identifies preferential hg hg signatures suggest hg isotope variability ii </ sup 72 ° n 202 </ sup 200 </ sup 199 </ sup hg deposition pathways dry deposition compared colocated terricolous lichens arctic ocean shore epiphytic tree lichens atmospheric hg deposition terricolous lichens near 15 ‰ similar 0 </ sup n </ dry deposition terricolous lichens atmospheric hg tree lichens total hg oxidized hg near zero 1 ‰ − 3 substantially higher sources mercury |
spellingShingle |
Microbiology Cell Biology Genetics Molecular Biology Physiology Pharmacology Ecology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified remote locations across isotopic composition (< 7700 ng g 74 ng g 35 ng g 300 km inland 243 ng g inland terricolous lichen regional soil hg preferentially accumulate hg identifies preferential hg hg signatures suggest hg isotope variability ii </ sup 72 ° n 202 </ sup 200 </ sup 199 </ sup hg deposition pathways dry deposition compared colocated terricolous lichens arctic ocean shore epiphytic tree lichens atmospheric hg deposition terricolous lichens near 15 ‰ similar 0 </ sup n </ dry deposition terricolous lichens atmospheric hg tree lichens total hg oxidized hg near zero 1 ‰ − 3 substantially higher sources mercury Jeroen E. Sonke (1472950) Vladimir P. Shevchenko (14279572) Jonathan Prunier (14279575) Ruoyu Sun (1785805) Anatoly S. Prokushkin (14279578) Oleg S. Pokrovsky (821057) Mercury Stable Isotope Composition of Lichens and Mosses from Northern Eurasia Reveals Hg Deposition Pathways and Sources |
topic_facet |
Microbiology Cell Biology Genetics Molecular Biology Physiology Pharmacology Ecology Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified remote locations across isotopic composition (< 7700 ng g 74 ng g 35 ng g 300 km inland 243 ng g inland terricolous lichen regional soil hg preferentially accumulate hg identifies preferential hg hg signatures suggest hg isotope variability ii </ sup 72 ° n 202 </ sup 200 </ sup 199 </ sup hg deposition pathways dry deposition compared colocated terricolous lichens arctic ocean shore epiphytic tree lichens atmospheric hg deposition terricolous lichens near 15 ‰ similar 0 </ sup n </ dry deposition terricolous lichens atmospheric hg tree lichens total hg oxidized hg near zero 1 ‰ − 3 substantially higher sources mercury |
description |
Mercury (Hg) concentrations in lichens and mosses can be used as surrogates for atmospheric Hg deposition to continental surfaces. In this study, we collected and analyzed Hg concentrations ( n = 334) and isotopic composition ( n = 67) of epiphytic tree lichens and terricolous lichens and mosses from remote locations across the Eurasian Arctic and sub-Arctic (50 to 72° N, 30 to 180° E). The total Hg (THg) concentrations ranged from 13 to 7700 ng g –1 . Epiphytic tree lichens had significantly higher median THg levels (243 ng g –1 ) than terricolous lichens (35 ng g –1 ) and mosses (74 ng g –1 ). THg is substantially higher in both tree lichens and terricolous lichens near the Arctic Ocean shore and up to 300 km inland. The combined δ 202 Hg, Δ 199 Hg, and Δ 200 Hg signatures suggest that the elevated coastal Hg levels are delivered by marine air masses rich in gaseous and particulate-oxidized Hg II forms, such as HgBr 2 . Similar to other vegetation Hg isotope studies, inland terricolous lichen and moss Δ 200 Hg are near zero, indicating a dominant (63%) atmospheric Hg 0 origin followed by Hg II wet and dry deposition. Inland tree lichens carry a more positive Δ 200 Hg of 0.15‰, similar to the atmospheric Hg II end-member, suggesting that they preferentially accumulate Hg II wet and dry deposition compared to colocated terricolous lichens. Mosses from the European sub-Arctic show a low δ 202 Hg of −3.1‰, which we speculate to result from regional soil Hg 0 emissions that are recaptured by mosses. Overall, the Hg isotope variability of mosses and lichens reveals latitudinal gradients in Hg deposition pathways and identifies preferential Hg 0 or Hg II uptake. |
format |
Dataset |
author |
Jeroen E. Sonke (1472950) Vladimir P. Shevchenko (14279572) Jonathan Prunier (14279575) Ruoyu Sun (1785805) Anatoly S. Prokushkin (14279578) Oleg S. Pokrovsky (821057) |
author_facet |
Jeroen E. Sonke (1472950) Vladimir P. Shevchenko (14279572) Jonathan Prunier (14279575) Ruoyu Sun (1785805) Anatoly S. Prokushkin (14279578) Oleg S. Pokrovsky (821057) |
author_sort |
Jeroen E. Sonke (1472950) |
title |
Mercury Stable Isotope Composition of Lichens and Mosses from Northern Eurasia Reveals Hg Deposition Pathways and Sources |
title_short |
Mercury Stable Isotope Composition of Lichens and Mosses from Northern Eurasia Reveals Hg Deposition Pathways and Sources |
title_full |
Mercury Stable Isotope Composition of Lichens and Mosses from Northern Eurasia Reveals Hg Deposition Pathways and Sources |
title_fullStr |
Mercury Stable Isotope Composition of Lichens and Mosses from Northern Eurasia Reveals Hg Deposition Pathways and Sources |
title_full_unstemmed |
Mercury Stable Isotope Composition of Lichens and Mosses from Northern Eurasia Reveals Hg Deposition Pathways and Sources |
title_sort |
mercury stable isotope composition of lichens and mosses from northern eurasia reveals hg deposition pathways and sources |
publishDate |
2022 |
url |
https://doi.org/10.1021/acsearthspacechem.2c00297.s001 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_relation |
https://figshare.com/articles/dataset/Mercury_Stable_Isotope_Composition_of_Lichens_and_Mosses_from_Northern_Eurasia_Reveals_Hg_Deposition_Pathways_and_Sources/21753433 doi:10.1021/acsearthspacechem.2c00297.s001 |
op_rights |
CC BY-NC 4.0 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1021/acsearthspacechem.2c00297.s001 |
_version_ |
1766325306439761920 |