Seabird-mediated transport of organohalogen compounds to remote sites (North West Greenland polynya)
The role of sea birds as carriers of pollutants over long distances was evaluated by analyzing organochlorine and organobromine compounds in lake sediment cores from three remote sites around the North Water polynya (North West Greenland). One lake, NOW5, was in the vicinity of a little auk (Alle al...
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Language: | English |
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Elsevier
2022
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Online Access: | http://hdl.handle.net/10261/266886 https://doi.org/10.1016/j.scitotenv.2022.154219 https://api.elsevier.com/content/abstract/scopus_id/85125710850 |
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ftcsic:oai:digital.csic.es:10261/266886 2024-06-23T07:45:19+00:00 Seabird-mediated transport of organohalogen compounds to remote sites (North West Greenland polynya) Nagar, Nupur Bartrons, Mireia Brucet, Sandra Davidson, Thomas A Jeppesen, Erik Grimalt, Joan O. 2022-02-28 http://hdl.handle.net/10261/266886 https://doi.org/10.1016/j.scitotenv.2022.154219 https://api.elsevier.com/content/abstract/scopus_id/85125710850 en eng Elsevier The Science of the total environment Publisher's version https://doi.org/10.1016/j.scitotenv.2022.154219 Sí Science of The Total Environment 827: 154219 (2022) 00489697 http://hdl.handle.net/10261/266886 doi:10.1016/j.scitotenv.2022.154219 35240191 2-s2.0-85125710850 https://api.elsevier.com/content/abstract/scopus_id/85125710850 open Sediment cores Greenland Lacustrine environments Migratory bird transport of pollutants Organochlorine and organobromine compounds Polynya artículo http://purl.org/coar/resource_type/c_6501 2022 ftcsic https://doi.org/10.1016/j.scitotenv.2022.154219 2024-05-29T00:00:47Z The role of sea birds as carriers of pollutants over long distances was evaluated by analyzing organochlorine and organobromine compounds in lake sediment cores from three remote sites around the North Water polynya (North West Greenland). One lake, NOW5, was in the vicinity of a little auk (Alle alle L.) bird colony, whereas the other two lakes, NOW14 and Q5, were undisturbed by seabirds. The former was strongly acidic (pH = 3.4) but the latter had a pH close to 8. Due to the guano loading, NOW5 exhibited higher chlorophyll concentrations (74 μg/L) than the other two lakes (1.6-3.4 μg/L), higher content of total phosphorous (0.34 mg/L vs. 0.007-0.01 mg/L) and total nitrogen (3.75 mg/L vs. 0.21-0.75 mg/L). The concentrations of all organohalogen compounds were substantially greater in NOW5 than in the other lakes, indicating the strong influence of these seabirds in the transport and deposition of these compounds to remote sites. However, not all compounds showed the same increases. Hexachlorocyclohexanes and endosulfans were more than 18 times higher in NOW5, the drin pesticides and hexachlorobenzene (HCB), between 9.5 and 18 times and DDTs, polybromodiphenyl ethers (PBDEs), polychlorobiphenyls (PCBs) and chlordanes about 2.7-6 times. These differences demonstrated that the bird-mediated deposition has preservation effects of the less stable and more volatile compounds, e.g. those with log Kaw < -2.4, log Koa < 9 and/or log Kow < 6.8. The sedimentary fluxes of PCBs, HCHs, drins, chlordanes, PBDEs, HCB and endosulfans were highest in the upper sediment layer of the polynya lake (year 2014). In contrast, the highest DDT fluxes were found in 1980. These trends indicate that despite restrictions and regulations, bird transport continues to introduce considerable amounts of organohalogen pollutants to the Arctic regions with the exception of DDTs, which show successful decline, even when mediated by bird metabolism. N.N. received a doctoral fellowship from the University of Vic-Central Catalunya. We are ... Article in Journal/Newspaper Alle alle Arctic Greenland little auk Digital.CSIC (Spanish National Research Council) Arctic Greenland Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Science of The Total Environment 827 154219 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Sediment cores Greenland Lacustrine environments Migratory bird transport of pollutants Organochlorine and organobromine compounds Polynya |
spellingShingle |
Sediment cores Greenland Lacustrine environments Migratory bird transport of pollutants Organochlorine and organobromine compounds Polynya Nagar, Nupur Bartrons, Mireia Brucet, Sandra Davidson, Thomas A Jeppesen, Erik Grimalt, Joan O. Seabird-mediated transport of organohalogen compounds to remote sites (North West Greenland polynya) |
topic_facet |
Sediment cores Greenland Lacustrine environments Migratory bird transport of pollutants Organochlorine and organobromine compounds Polynya |
description |
The role of sea birds as carriers of pollutants over long distances was evaluated by analyzing organochlorine and organobromine compounds in lake sediment cores from three remote sites around the North Water polynya (North West Greenland). One lake, NOW5, was in the vicinity of a little auk (Alle alle L.) bird colony, whereas the other two lakes, NOW14 and Q5, were undisturbed by seabirds. The former was strongly acidic (pH = 3.4) but the latter had a pH close to 8. Due to the guano loading, NOW5 exhibited higher chlorophyll concentrations (74 μg/L) than the other two lakes (1.6-3.4 μg/L), higher content of total phosphorous (0.34 mg/L vs. 0.007-0.01 mg/L) and total nitrogen (3.75 mg/L vs. 0.21-0.75 mg/L). The concentrations of all organohalogen compounds were substantially greater in NOW5 than in the other lakes, indicating the strong influence of these seabirds in the transport and deposition of these compounds to remote sites. However, not all compounds showed the same increases. Hexachlorocyclohexanes and endosulfans were more than 18 times higher in NOW5, the drin pesticides and hexachlorobenzene (HCB), between 9.5 and 18 times and DDTs, polybromodiphenyl ethers (PBDEs), polychlorobiphenyls (PCBs) and chlordanes about 2.7-6 times. These differences demonstrated that the bird-mediated deposition has preservation effects of the less stable and more volatile compounds, e.g. those with log Kaw < -2.4, log Koa < 9 and/or log Kow < 6.8. The sedimentary fluxes of PCBs, HCHs, drins, chlordanes, PBDEs, HCB and endosulfans were highest in the upper sediment layer of the polynya lake (year 2014). In contrast, the highest DDT fluxes were found in 1980. These trends indicate that despite restrictions and regulations, bird transport continues to introduce considerable amounts of organohalogen pollutants to the Arctic regions with the exception of DDTs, which show successful decline, even when mediated by bird metabolism. N.N. received a doctoral fellowship from the University of Vic-Central Catalunya. We are ... |
format |
Article in Journal/Newspaper |
author |
Nagar, Nupur Bartrons, Mireia Brucet, Sandra Davidson, Thomas A Jeppesen, Erik Grimalt, Joan O. |
author_facet |
Nagar, Nupur Bartrons, Mireia Brucet, Sandra Davidson, Thomas A Jeppesen, Erik Grimalt, Joan O. |
author_sort |
Nagar, Nupur |
title |
Seabird-mediated transport of organohalogen compounds to remote sites (North West Greenland polynya) |
title_short |
Seabird-mediated transport of organohalogen compounds to remote sites (North West Greenland polynya) |
title_full |
Seabird-mediated transport of organohalogen compounds to remote sites (North West Greenland polynya) |
title_fullStr |
Seabird-mediated transport of organohalogen compounds to remote sites (North West Greenland polynya) |
title_full_unstemmed |
Seabird-mediated transport of organohalogen compounds to remote sites (North West Greenland polynya) |
title_sort |
seabird-mediated transport of organohalogen compounds to remote sites (north west greenland polynya) |
publisher |
Elsevier |
publishDate |
2022 |
url |
http://hdl.handle.net/10261/266886 https://doi.org/10.1016/j.scitotenv.2022.154219 https://api.elsevier.com/content/abstract/scopus_id/85125710850 |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) |
geographic |
Arctic Greenland Guano |
geographic_facet |
Arctic Greenland Guano |
genre |
Alle alle Arctic Greenland little auk |
genre_facet |
Alle alle Arctic Greenland little auk |
op_relation |
The Science of the total environment Publisher's version https://doi.org/10.1016/j.scitotenv.2022.154219 Sí Science of The Total Environment 827: 154219 (2022) 00489697 http://hdl.handle.net/10261/266886 doi:10.1016/j.scitotenv.2022.154219 35240191 2-s2.0-85125710850 https://api.elsevier.com/content/abstract/scopus_id/85125710850 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.scitotenv.2022.154219 |
container_title |
Science of The Total Environment |
container_volume |
827 |
container_start_page |
154219 |
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1802639040967606272 |