Iron, silicate, and light co-limitation of three Southern Ocean diatom species
The effect of combined iron, silicate, and light co-limitation was investigated in the three diatom species Actinocyclus sp. Ehrenberg, Chaetoceros dichaeta Ehrenberg, and Chaetoceros debilis Cleve, isolated from the Southern Ocean (SO). Growth of all species was co-limited by iron and silicate, ref...
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Online Access: | https://oceanrep.geomar.de/id/eprint/7144/ https://oceanrep.geomar.de/id/eprint/7144/3/Hoffmann.pdf https://doi.org/10.1007/s00300-008-0448-6 |
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ftoceanrep:oai:oceanrep.geomar.de:7144 2023-05-15T18:02:01+02:00 Iron, silicate, and light co-limitation of three Southern Ocean diatom species Hoffmann, Linn Peeken, Ilka Lochte, Karin 2008 text https://oceanrep.geomar.de/id/eprint/7144/ https://oceanrep.geomar.de/id/eprint/7144/3/Hoffmann.pdf https://doi.org/10.1007/s00300-008-0448-6 en eng Springer https://oceanrep.geomar.de/id/eprint/7144/3/Hoffmann.pdf Hoffmann, L. , Peeken, I. and Lochte, K. (2008) Iron, silicate, and light co-limitation of three Southern Ocean diatom species. Polar Biology, 31 (9). pp. 1067-1080. DOI 10.1007/s00300-008-0448-6 <https://doi.org/10.1007/s00300-008-0448-6>. doi:10.1007/s00300-008-0448-6 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.1007/s00300-008-0448-6 2023-04-07T14:54:10Z The effect of combined iron, silicate, and light co-limitation was investigated in the three diatom species Actinocyclus sp. Ehrenberg, Chaetoceros dichaeta Ehrenberg, and Chaetoceros debilis Cleve, isolated from the Southern Ocean (SO). Growth of all species was co-limited by iron and silicate, reflected in a significant increase in the number of cell divisions compared to the control. Lowest relative Si uptake and drastic frustule malformation was found under iron and silicate co-limitation in C. dichaeta, while Si limitation in general caused cell elongation in both Chaetoceros species. Higher light intensities similar to SO surface conditions showed a negative impact on growth of C. dichaeta and Actinocyclus sp. and no effect on C. debilis. This is in contrast to the assumed light limitation of SO diatoms due to deep wind driven mixing. Our results suggest that growth and species composition of Southern Ocean diatoms is influenced by a sensitive interaction of the abiotic factors, iron, silicate, and light. Article in Journal/Newspaper Polar Biology Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Southern Ocean Polar Biology 31 9 1067 1080 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The effect of combined iron, silicate, and light co-limitation was investigated in the three diatom species Actinocyclus sp. Ehrenberg, Chaetoceros dichaeta Ehrenberg, and Chaetoceros debilis Cleve, isolated from the Southern Ocean (SO). Growth of all species was co-limited by iron and silicate, reflected in a significant increase in the number of cell divisions compared to the control. Lowest relative Si uptake and drastic frustule malformation was found under iron and silicate co-limitation in C. dichaeta, while Si limitation in general caused cell elongation in both Chaetoceros species. Higher light intensities similar to SO surface conditions showed a negative impact on growth of C. dichaeta and Actinocyclus sp. and no effect on C. debilis. This is in contrast to the assumed light limitation of SO diatoms due to deep wind driven mixing. Our results suggest that growth and species composition of Southern Ocean diatoms is influenced by a sensitive interaction of the abiotic factors, iron, silicate, and light. |
format |
Article in Journal/Newspaper |
author |
Hoffmann, Linn Peeken, Ilka Lochte, Karin |
spellingShingle |
Hoffmann, Linn Peeken, Ilka Lochte, Karin Iron, silicate, and light co-limitation of three Southern Ocean diatom species |
author_facet |
Hoffmann, Linn Peeken, Ilka Lochte, Karin |
author_sort |
Hoffmann, Linn |
title |
Iron, silicate, and light co-limitation of three Southern Ocean diatom species |
title_short |
Iron, silicate, and light co-limitation of three Southern Ocean diatom species |
title_full |
Iron, silicate, and light co-limitation of three Southern Ocean diatom species |
title_fullStr |
Iron, silicate, and light co-limitation of three Southern Ocean diatom species |
title_full_unstemmed |
Iron, silicate, and light co-limitation of three Southern Ocean diatom species |
title_sort |
iron, silicate, and light co-limitation of three southern ocean diatom species |
publisher |
Springer |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/7144/ https://oceanrep.geomar.de/id/eprint/7144/3/Hoffmann.pdf https://doi.org/10.1007/s00300-008-0448-6 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Polar Biology Southern Ocean |
genre_facet |
Polar Biology Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/7144/3/Hoffmann.pdf Hoffmann, L. , Peeken, I. and Lochte, K. (2008) Iron, silicate, and light co-limitation of three Southern Ocean diatom species. Polar Biology, 31 (9). pp. 1067-1080. DOI 10.1007/s00300-008-0448-6 <https://doi.org/10.1007/s00300-008-0448-6>. doi:10.1007/s00300-008-0448-6 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-008-0448-6 |
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Polar Biology |
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31 |
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9 |
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1067 |
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1080 |
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1766171670683320320 |