Antarctic krill (Euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern Antarctic Peninsula, Antarctic
The northern Antarctic Peninsula (NAP) supports a few human activities. It is affected by intense climate change and anthropogenic threats. Antarctic krill (Euphausia superba) is the largest, by mass, in the Southern Ocean and is the keystone species in the Antarctic ecosystem. In this study, we rep...
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ftdoajarticles:oai:doaj.org/article:f82f29fff4104d3a96c999504ffe4c4f 2023-05-15T13:44:25+02:00 Antarctic krill (Euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern Antarctic Peninsula, Antarctic Danrong Wang Guoping Zhu 2022-03-01T00:00:00Z https://doi.org/10.1016/j.ecolind.2022.108596 https://doaj.org/article/f82f29fff4104d3a96c999504ffe4c4f EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S1470160X2200067X https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2022.108596 https://doaj.org/article/f82f29fff4104d3a96c999504ffe4c4f Ecological Indicators, Vol 136, Iss , Pp 108596- (2022) Euphausia superba Northern Antarctic Peninsula Bioindicator Marine ecosystem Trace element Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.1016/j.ecolind.2022.108596 2022-12-31T00:45:12Z The northern Antarctic Peninsula (NAP) supports a few human activities. It is affected by intense climate change and anthropogenic threats. Antarctic krill (Euphausia superba) is the largest, by mass, in the Southern Ocean and is the keystone species in the Antarctic ecosystem. In this study, we report the concentrations of trace elements, i.e., zinc [Zn], copper [Cu], cadmium [Cd], and lead [Pb], in krill in three hydrographic settings of the NAP to explore the suitability of krill as a bioindicator of trace elements to reflect the heterogeneity in marine environments in this area. The following element-concentration ranking was recorded for all regions: Cu > Zn > Pb > Cd, showing that the Cu concentration is comparable to the Zn concentration in krill, and those concentrations are higher at two orders of magnitude than the Pb and Cd concentrations in krill. The Pb concentration is highest in the western basin (WB) of the Bransfield Strait, followed by the central basin (CB) of the Bransfield Strait and the north shelf (NS) of the South Shetland Islands. Lowest levels of Cu, Zn and Cd are detected in NS compared to the levels of those elements in the other two regions. There is a significant negative correlation in the Cd level in krill between NS and CB. We also discuss the processes of hydrographic dynamics transporting trace elements in NAP. Collectively, these results suggest krill is a suitable and effective bioindicator for reflecting regional heterogeneity in marine environments in NAP. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba South Shetland Islands Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Bransfield Strait Central Basin ENVELOPE(178.000,178.000,-72.300,-72.300) South Shetland Islands Southern Ocean The Antarctic Western Basin Ecological Indicators 136 108596 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Euphausia superba Northern Antarctic Peninsula Bioindicator Marine ecosystem Trace element Ecology QH540-549.5 |
spellingShingle |
Euphausia superba Northern Antarctic Peninsula Bioindicator Marine ecosystem Trace element Ecology QH540-549.5 Danrong Wang Guoping Zhu Antarctic krill (Euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern Antarctic Peninsula, Antarctic |
topic_facet |
Euphausia superba Northern Antarctic Peninsula Bioindicator Marine ecosystem Trace element Ecology QH540-549.5 |
description |
The northern Antarctic Peninsula (NAP) supports a few human activities. It is affected by intense climate change and anthropogenic threats. Antarctic krill (Euphausia superba) is the largest, by mass, in the Southern Ocean and is the keystone species in the Antarctic ecosystem. In this study, we report the concentrations of trace elements, i.e., zinc [Zn], copper [Cu], cadmium [Cd], and lead [Pb], in krill in three hydrographic settings of the NAP to explore the suitability of krill as a bioindicator of trace elements to reflect the heterogeneity in marine environments in this area. The following element-concentration ranking was recorded for all regions: Cu > Zn > Pb > Cd, showing that the Cu concentration is comparable to the Zn concentration in krill, and those concentrations are higher at two orders of magnitude than the Pb and Cd concentrations in krill. The Pb concentration is highest in the western basin (WB) of the Bransfield Strait, followed by the central basin (CB) of the Bransfield Strait and the north shelf (NS) of the South Shetland Islands. Lowest levels of Cu, Zn and Cd are detected in NS compared to the levels of those elements in the other two regions. There is a significant negative correlation in the Cd level in krill between NS and CB. We also discuss the processes of hydrographic dynamics transporting trace elements in NAP. Collectively, these results suggest krill is a suitable and effective bioindicator for reflecting regional heterogeneity in marine environments in NAP. |
format |
Article in Journal/Newspaper |
author |
Danrong Wang Guoping Zhu |
author_facet |
Danrong Wang Guoping Zhu |
author_sort |
Danrong Wang |
title |
Antarctic krill (Euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern Antarctic Peninsula, Antarctic |
title_short |
Antarctic krill (Euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern Antarctic Peninsula, Antarctic |
title_full |
Antarctic krill (Euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern Antarctic Peninsula, Antarctic |
title_fullStr |
Antarctic krill (Euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern Antarctic Peninsula, Antarctic |
title_full_unstemmed |
Antarctic krill (Euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern Antarctic Peninsula, Antarctic |
title_sort |
antarctic krill (euphausia superba) as a bioindicator of trace elements reflects regional heterogeneity in marine environments in the northern antarctic peninsula, antarctic |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.ecolind.2022.108596 https://doaj.org/article/f82f29fff4104d3a96c999504ffe4c4f |
long_lat |
ENVELOPE(178.000,178.000,-72.300,-72.300) |
geographic |
Antarctic Antarctic Peninsula Bransfield Strait Central Basin South Shetland Islands Southern Ocean The Antarctic Western Basin |
geographic_facet |
Antarctic Antarctic Peninsula Bransfield Strait Central Basin South Shetland Islands Southern Ocean The Antarctic Western Basin |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba South Shetland Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba South Shetland Islands Southern Ocean |
op_source |
Ecological Indicators, Vol 136, Iss , Pp 108596- (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1470160X2200067X https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2022.108596 https://doaj.org/article/f82f29fff4104d3a96c999504ffe4c4f |
op_doi |
https://doi.org/10.1016/j.ecolind.2022.108596 |
container_title |
Ecological Indicators |
container_volume |
136 |
container_start_page |
108596 |
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1766201424757129216 |