The Effects of Natural Iron Fertilisation on Deep-Sea Ecology: The Crozet Plateau, Southern Indian Ocean
The addition of iron to high-nutrient low-chlorophyll (HNLC) oceanic waters stimulates phytoplankton, leading to greater primary production. Large-scale artificial ocean iron fertilization (OIF) has been proposed as a means of mitigating anthropogenic atmospheric CO2, but its impacts on ocean ecosys...
Main Authors: | , , , , , , , , , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.290.8499 |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.290.8499 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.290.8499 2023-05-15T15:59:33+02:00 The Effects of Natural Iron Fertilisation on Deep-Sea Ecology: The Crozet Plateau, Southern Indian Ocean George A. Wolff David S. M. Billett Brian J. Bett Jens Holtvoeth Tania Fitzgeorge-balfour ¤a Elizabeth H. Fisher Ian Cross Roger Shannon Ian Salter ¤b Ben Boorman Nicola J. King Frédéric Chaillan The Pennsylvania State University CiteSeerX Archives application/zip http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.290.8499 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.290.8499 Metadata may be used without restrictions as long as the oai identifier remains attached to it. ftp://ftp.ncbi.nlm.nih.gov/pub/pmc/5e/75/PLoS_One_2011_Jun_14_6(6)_e20697.tar.gz Plateau Southern Indian Ocean. PLoS ONE 6(6 e20697. doi 10.1371/journal.pone.0020697 text ftciteseerx 2016-01-07T21:33:43Z The addition of iron to high-nutrient low-chlorophyll (HNLC) oceanic waters stimulates phytoplankton, leading to greater primary production. Large-scale artificial ocean iron fertilization (OIF) has been proposed as a means of mitigating anthropogenic atmospheric CO2, but its impacts on ocean ecosystems below the photic zone are unknown. Natural OIF, through the addition of iron leached from volcanic islands, has been shown to enhance primary productivity and carbon export and so can be used to study the effects of OIF on life in the ocean. We compared two closely-located deep-sea sites (,400 km apart and both at,4200 m water depth) to the East (naturally iron fertilized; +Fe) and South (HNLC) of the Crozet Islands in the southern Indian Ocean. Our results suggest that long-term geo-engineering of surface oceanic waters via artificial OIF would lead to significant changes in deep-sea ecosystems. We found that the +Fe area had greater supplies of organic matter inputs to the seafloor, including polyunsaturated fatty acid and carotenoid nutrients. The +Fe site also had greater densities and biomasses of large deep-sea animals with lower levels of evenness in community structuring. The species composition was also very different, with the +Fe site showing similarities to eutrophic sites in other ocean basins. Moreover, major differences occurred in the taxa at the +Fe and HNLC sites revealing the crucial role that surface oceanic Text Crozet Islands Unknown Indian |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Plateau Southern Indian Ocean. PLoS ONE 6(6 e20697. doi 10.1371/journal.pone.0020697 |
spellingShingle |
Plateau Southern Indian Ocean. PLoS ONE 6(6 e20697. doi 10.1371/journal.pone.0020697 George A. Wolff David S. M. Billett Brian J. Bett Jens Holtvoeth Tania Fitzgeorge-balfour ¤a Elizabeth H. Fisher Ian Cross Roger Shannon Ian Salter ¤b Ben Boorman Nicola J. King Frédéric Chaillan The Effects of Natural Iron Fertilisation on Deep-Sea Ecology: The Crozet Plateau, Southern Indian Ocean |
topic_facet |
Plateau Southern Indian Ocean. PLoS ONE 6(6 e20697. doi 10.1371/journal.pone.0020697 |
description |
The addition of iron to high-nutrient low-chlorophyll (HNLC) oceanic waters stimulates phytoplankton, leading to greater primary production. Large-scale artificial ocean iron fertilization (OIF) has been proposed as a means of mitigating anthropogenic atmospheric CO2, but its impacts on ocean ecosystems below the photic zone are unknown. Natural OIF, through the addition of iron leached from volcanic islands, has been shown to enhance primary productivity and carbon export and so can be used to study the effects of OIF on life in the ocean. We compared two closely-located deep-sea sites (,400 km apart and both at,4200 m water depth) to the East (naturally iron fertilized; +Fe) and South (HNLC) of the Crozet Islands in the southern Indian Ocean. Our results suggest that long-term geo-engineering of surface oceanic waters via artificial OIF would lead to significant changes in deep-sea ecosystems. We found that the +Fe area had greater supplies of organic matter inputs to the seafloor, including polyunsaturated fatty acid and carotenoid nutrients. The +Fe site also had greater densities and biomasses of large deep-sea animals with lower levels of evenness in community structuring. The species composition was also very different, with the +Fe site showing similarities to eutrophic sites in other ocean basins. Moreover, major differences occurred in the taxa at the +Fe and HNLC sites revealing the crucial role that surface oceanic |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
George A. Wolff David S. M. Billett Brian J. Bett Jens Holtvoeth Tania Fitzgeorge-balfour ¤a Elizabeth H. Fisher Ian Cross Roger Shannon Ian Salter ¤b Ben Boorman Nicola J. King Frédéric Chaillan |
author_facet |
George A. Wolff David S. M. Billett Brian J. Bett Jens Holtvoeth Tania Fitzgeorge-balfour ¤a Elizabeth H. Fisher Ian Cross Roger Shannon Ian Salter ¤b Ben Boorman Nicola J. King Frédéric Chaillan |
author_sort |
George A. Wolff |
title |
The Effects of Natural Iron Fertilisation on Deep-Sea Ecology: The Crozet Plateau, Southern Indian Ocean |
title_short |
The Effects of Natural Iron Fertilisation on Deep-Sea Ecology: The Crozet Plateau, Southern Indian Ocean |
title_full |
The Effects of Natural Iron Fertilisation on Deep-Sea Ecology: The Crozet Plateau, Southern Indian Ocean |
title_fullStr |
The Effects of Natural Iron Fertilisation on Deep-Sea Ecology: The Crozet Plateau, Southern Indian Ocean |
title_full_unstemmed |
The Effects of Natural Iron Fertilisation on Deep-Sea Ecology: The Crozet Plateau, Southern Indian Ocean |
title_sort |
effects of natural iron fertilisation on deep-sea ecology: the crozet plateau, southern indian ocean |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.290.8499 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Crozet Islands |
genre_facet |
Crozet Islands |
op_source |
ftp://ftp.ncbi.nlm.nih.gov/pub/pmc/5e/75/PLoS_One_2011_Jun_14_6(6)_e20697.tar.gz |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.290.8499 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766395487438503936 |