Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans
Photosynthesis by marine phytoplankton requires bioavailable forms of several trace elements that are found in extremely low concentrations in the open ocean. We have compared the concentration, lability and size distribution (b1 nm and b10 nm) of a suite of trace elements that are thought to be lim...
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ftunivtasecite:oai:ecite.utas.edu.au:76116 2023-05-15T18:24:26+02:00 Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans Baeyens, W Bowie, AR Buesseler, K Elskens, M Gao, Y Lamborg, C Leermakers, M Remenyi, T Zhang, H 2011 application/pdf https://doi.org/10.1016/j.marchem.2011.04.004 http://ecite.utas.edu.au/76116 en eng Elsevier Science Bv http://ecite.utas.edu.au/76116/1/Baeyens et al 2011.pdf http://dx.doi.org/10.1016/j.marchem.2011.04.004 Baeyens, W and Bowie, AR and Buesseler, K and Elskens, M and Gao, Y and Lamborg, C and Leermakers, M and Remenyi, T and Zhang, H, Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans, Marine Chemistry: An International Journal for Studies of All Chemical Aspects of The Marine Environment, 126, (1-4) pp. 108-113. ISSN 0304-4203 (2011) [Refereed Article] http://ecite.utas.edu.au/76116 Earth Sciences Oceanography Chemical Oceanography Refereed Article PeerReviewed 2011 ftunivtasecite https://doi.org/10.1016/j.marchem.2011.04.004 2019-12-13T21:42:32Z Photosynthesis by marine phytoplankton requires bioavailable forms of several trace elements that are found in extremely low concentrations in the open ocean. We have compared the concentration, lability and size distribution (b1 nm and b10 nm) of a suite of trace elements that are thought to be limiting to primary productivity as well as a toxic element (Pb) in two High Nutrient Low Chlorophyll (HNLC) regions using a new dynamic speciation technique, Diffusive Gradients in Thin-film (DGT). The labile species trapped within the DGT probes have a size that is smaller or similar than the pore size of algal cell walls and thus present a proxy for bioavailable species. Total Dissolvable trace element concentrations (TD concentration) varied between 0.05 nM (Co) and 4.0 nM(Ni) at K2 (Northwest Pacific Ocean) and between 0.026 nM (Co) and 4.7 nM (Ni) in the Southern Ocean. The smallest size fractionated labile concentrations (b1 nm) observed at Southern Ocean sampling stations ranged between 0.002 nM (Co) and 2.1 nM (Ni). Moreover, large differences in bioavailable fractions (ratio oflabile to TD concentration) were observed between the trace elements. In the Northwest Pacific Ocean Fe, Cu and Mn had lower labile fractions (between 10 and 44%) than Co, Cd, Ni and Pb (between 80 and 100%). In the Southern Ocean a similar trend was observed, and in addition: (1) Co, Cd, Ni and Pb have lower labile fractions in the Southern Ocean than in the Northwest Pacific and (2) the ratios of b1 nm to dissolvable element concentrations at some Southern Ocean stations were very low and varied between 4 and 16%. Article in Journal/Newspaper Southern Ocean eCite UTAS (University of Tasmania) Pacific Southern Ocean Marine Chemistry 126 1-4 108 113 |
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eCite UTAS (University of Tasmania) |
op_collection_id |
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language |
English |
topic |
Earth Sciences Oceanography Chemical Oceanography |
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Earth Sciences Oceanography Chemical Oceanography Baeyens, W Bowie, AR Buesseler, K Elskens, M Gao, Y Lamborg, C Leermakers, M Remenyi, T Zhang, H Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans |
topic_facet |
Earth Sciences Oceanography Chemical Oceanography |
description |
Photosynthesis by marine phytoplankton requires bioavailable forms of several trace elements that are found in extremely low concentrations in the open ocean. We have compared the concentration, lability and size distribution (b1 nm and b10 nm) of a suite of trace elements that are thought to be limiting to primary productivity as well as a toxic element (Pb) in two High Nutrient Low Chlorophyll (HNLC) regions using a new dynamic speciation technique, Diffusive Gradients in Thin-film (DGT). The labile species trapped within the DGT probes have a size that is smaller or similar than the pore size of algal cell walls and thus present a proxy for bioavailable species. Total Dissolvable trace element concentrations (TD concentration) varied between 0.05 nM (Co) and 4.0 nM(Ni) at K2 (Northwest Pacific Ocean) and between 0.026 nM (Co) and 4.7 nM (Ni) in the Southern Ocean. The smallest size fractionated labile concentrations (b1 nm) observed at Southern Ocean sampling stations ranged between 0.002 nM (Co) and 2.1 nM (Ni). Moreover, large differences in bioavailable fractions (ratio oflabile to TD concentration) were observed between the trace elements. In the Northwest Pacific Ocean Fe, Cu and Mn had lower labile fractions (between 10 and 44%) than Co, Cd, Ni and Pb (between 80 and 100%). In the Southern Ocean a similar trend was observed, and in addition: (1) Co, Cd, Ni and Pb have lower labile fractions in the Southern Ocean than in the Northwest Pacific and (2) the ratios of b1 nm to dissolvable element concentrations at some Southern Ocean stations were very low and varied between 4 and 16%. |
format |
Article in Journal/Newspaper |
author |
Baeyens, W Bowie, AR Buesseler, K Elskens, M Gao, Y Lamborg, C Leermakers, M Remenyi, T Zhang, H |
author_facet |
Baeyens, W Bowie, AR Buesseler, K Elskens, M Gao, Y Lamborg, C Leermakers, M Remenyi, T Zhang, H |
author_sort |
Baeyens, W |
title |
Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans |
title_short |
Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans |
title_full |
Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans |
title_fullStr |
Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans |
title_full_unstemmed |
Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans |
title_sort |
size-fractionated labile trace elements in the northwest pacific and southern oceans |
publisher |
Elsevier Science Bv |
publishDate |
2011 |
url |
https://doi.org/10.1016/j.marchem.2011.04.004 http://ecite.utas.edu.au/76116 |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://ecite.utas.edu.au/76116/1/Baeyens et al 2011.pdf http://dx.doi.org/10.1016/j.marchem.2011.04.004 Baeyens, W and Bowie, AR and Buesseler, K and Elskens, M and Gao, Y and Lamborg, C and Leermakers, M and Remenyi, T and Zhang, H, Size-fractionated labile trace elements in the Northwest Pacific and Southern Oceans, Marine Chemistry: An International Journal for Studies of All Chemical Aspects of The Marine Environment, 126, (1-4) pp. 108-113. ISSN 0304-4203 (2011) [Refereed Article] http://ecite.utas.edu.au/76116 |
op_doi |
https://doi.org/10.1016/j.marchem.2011.04.004 |
container_title |
Marine Chemistry |
container_volume |
126 |
container_issue |
1-4 |
container_start_page |
108 |
op_container_end_page |
113 |
_version_ |
1766204932234412032 |