Can land use intensification in the Mallee, Australia increase the supply of soluble iron to the Southern Ocean?

The supply of soluble iron through atmospheric dust deposition limits the productivity of the Southern Ocean. In comparison to the Northern Hemisphere, the Southern Hemisphere exhibits low levels of dust activity. However, given their proximity to the Southern Ocean, dust emissions from continental...

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Format: Article in Journal/Newspaper
Language:unknown
Published: Nature Publishing Group 2014
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Online Access:https://dx.doi.org/10.18130/v33v2m
https://libraopen.lib.virginia.edu/public_view/2j62s486f
id ftdatacite:10.18130/v33v2m
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spelling ftdatacite:10.18130/v33v2m 2023-05-15T18:24:25+02:00 Can land use intensification in the Mallee, Australia increase the supply of soluble iron to the Southern Ocean? 2014 https://dx.doi.org/10.18130/v33v2m https://libraopen.lib.virginia.edu/public_view/2j62s486f unknown Nature Publishing Group All rights reserved (no additional license for public reuse) land use dust emissions land degradation JournalArticle Article article-journal ScholarlyArticle 2014 ftdatacite https://doi.org/10.18130/v33v2m 2021-11-05T12:55:41Z The supply of soluble iron through atmospheric dust deposition limits the productivity of the Southern Ocean. In comparison to the Northern Hemisphere, the Southern Hemisphere exhibits low levels of dust activity. However, given their proximity to the Southern Ocean, dust emissions from continental sources in the Southern Hemisphere could have disproportionate impact on ocean productivity. Australia is the largest source of dust in the Southern Hemisphere and aeolian transport of dust has major ecological, economic and health implications. In the Mallee, agriculture is a major driver of dust emissions and dust storms that affect Southeastern Australia. In this study, we assess the dust generating potential of the sediment from the Mallee, analyze the sediment for soluble iron content and determine the likely depositional region of the emitted dust. Our results suggest that the Mallee sediments have comparable dust generating potential to other currently active dust sources in the Southern Hemisphere and the dust-sized fraction is rich in soluble iron. Forward trajectory analyses show that this dust will impact the Tasman Sea and the Australian section of the Southern Ocean. This iron-rich dust could stimulate ocean productivity in future as more areas are reactivated as a result of land-use and droughts. Article in Journal/Newspaper Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic land use
dust emissions
land degradation
spellingShingle land use
dust emissions
land degradation
Can land use intensification in the Mallee, Australia increase the supply of soluble iron to the Southern Ocean?
topic_facet land use
dust emissions
land degradation
description The supply of soluble iron through atmospheric dust deposition limits the productivity of the Southern Ocean. In comparison to the Northern Hemisphere, the Southern Hemisphere exhibits low levels of dust activity. However, given their proximity to the Southern Ocean, dust emissions from continental sources in the Southern Hemisphere could have disproportionate impact on ocean productivity. Australia is the largest source of dust in the Southern Hemisphere and aeolian transport of dust has major ecological, economic and health implications. In the Mallee, agriculture is a major driver of dust emissions and dust storms that affect Southeastern Australia. In this study, we assess the dust generating potential of the sediment from the Mallee, analyze the sediment for soluble iron content and determine the likely depositional region of the emitted dust. Our results suggest that the Mallee sediments have comparable dust generating potential to other currently active dust sources in the Southern Hemisphere and the dust-sized fraction is rich in soluble iron. Forward trajectory analyses show that this dust will impact the Tasman Sea and the Australian section of the Southern Ocean. This iron-rich dust could stimulate ocean productivity in future as more areas are reactivated as a result of land-use and droughts.
format Article in Journal/Newspaper
title Can land use intensification in the Mallee, Australia increase the supply of soluble iron to the Southern Ocean?
title_short Can land use intensification in the Mallee, Australia increase the supply of soluble iron to the Southern Ocean?
title_full Can land use intensification in the Mallee, Australia increase the supply of soluble iron to the Southern Ocean?
title_fullStr Can land use intensification in the Mallee, Australia increase the supply of soluble iron to the Southern Ocean?
title_full_unstemmed Can land use intensification in the Mallee, Australia increase the supply of soluble iron to the Southern Ocean?
title_sort can land use intensification in the mallee, australia increase the supply of soluble iron to the southern ocean?
publisher Nature Publishing Group
publishDate 2014
url https://dx.doi.org/10.18130/v33v2m
https://libraopen.lib.virginia.edu/public_view/2j62s486f
geographic Southern Ocean
geographic_facet Southern Ocean
genre Southern Ocean
genre_facet Southern Ocean
op_rights All rights reserved (no additional license for public reuse)
op_doi https://doi.org/10.18130/v33v2m
_version_ 1766204919807737856