Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia
We investigated the potential of soil moisture and nutrient amendments to enhance the biodegradation of oil in the soils from an ecologically unique semi-arid island. This was achieved using a series of controlled laboratory incubations where moisture or nutrient levels were experimentally manipulat...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Springer
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/58625 |
| _version_ | 1848760307035406336 |
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| author | Tibbett, M. George, S. Davie, A. Barron, A. Milton, N. Greenwood, Paul |
| author_facet | Tibbett, M. George, S. Davie, A. Barron, A. Milton, N. Greenwood, Paul |
| author_sort | Tibbett, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We investigated the potential of soil moisture and nutrient amendments to enhance the biodegradation of oil in the soils from an ecologically unique semi-arid island. This was achieved using a series of controlled laboratory incubations where moisture or nutrient levels were experimentally manipulated. Respired CO2 increased sharply with moisture amendment reflecting the severe moisture limitation of these porous and semi-arid soils. The greatest levels of CO2 respiration were generally obtained with a soil pore water saturation of 50-70%. Biodegradation in these nutrient poor soils was also promoted by the moderate addition of a nitrogen fertiliser. Increased biodegradation was greater at the lowest amendment rate (100 mg N kg -1 soil) than the higher levels (500 or 1,000 mg N kg-1 soil), suggesting the higher application rates may introduce N toxicity. Addition of phosphorous alone had little effect, but a combined 500 mg N and 200 mg P kg-1 soil amendment led to a synergistic increase in CO 2 respiration (3.0×), suggesting P can limit the biodegradation of hydrocarbons following exogenous N amendment. © 2010 Springer Science+Business Media B.V. |
| first_indexed | 2025-11-14T10:13:41Z |
| format | Journal Article |
| id | curtin-20.500.11937-58625 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:13:41Z |
| publishDate | 2011 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-586252017-11-24T05:45:57Z Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia Tibbett, M. George, S. Davie, A. Barron, A. Milton, N. Greenwood, Paul We investigated the potential of soil moisture and nutrient amendments to enhance the biodegradation of oil in the soils from an ecologically unique semi-arid island. This was achieved using a series of controlled laboratory incubations where moisture or nutrient levels were experimentally manipulated. Respired CO2 increased sharply with moisture amendment reflecting the severe moisture limitation of these porous and semi-arid soils. The greatest levels of CO2 respiration were generally obtained with a soil pore water saturation of 50-70%. Biodegradation in these nutrient poor soils was also promoted by the moderate addition of a nitrogen fertiliser. Increased biodegradation was greater at the lowest amendment rate (100 mg N kg -1 soil) than the higher levels (500 or 1,000 mg N kg-1 soil), suggesting the higher application rates may introduce N toxicity. Addition of phosphorous alone had little effect, but a combined 500 mg N and 200 mg P kg-1 soil amendment led to a synergistic increase in CO 2 respiration (3.0×), suggesting P can limit the biodegradation of hydrocarbons following exogenous N amendment. © 2010 Springer Science+Business Media B.V. 2011 Journal Article http://hdl.handle.net/20.500.11937/58625 10.1007/s11270-010-0549-z Springer restricted |
| spellingShingle | Tibbett, M. George, S. Davie, A. Barron, A. Milton, N. Greenwood, Paul Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia |
| title | Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia |
| title_full | Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia |
| title_fullStr | Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia |
| title_full_unstemmed | Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia |
| title_short | Just add water and salt: The optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid Barrow Island, Western Australia |
| title_sort | just add water and salt: the optimisation of petrogenic hydrocarbon biodegradation in soils from semi-arid barrow island, western australia |
| url | http://hdl.handle.net/20.500.11937/58625 |