Changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons
Abstract Bioremediation has been used to remediate petroleum hydrocarbon (PHC)‐contaminated sites in polar regions; however, limited knowledge exists in understanding how frozen conditions influence factors that regulate microbial activity. We hypothesized that increased liquid water (θ liquid ) wou...
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crwiley:10.1002/etc.745 2024-06-02T07:57:18+00:00 Changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons Harvey, Alexis Nadine Snape, Ian Siciliano, Steven Douglas 2011 http://dx.doi.org/10.1002/etc.745 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.745 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.745 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Toxicology and Chemistry volume 31, issue 2, page 395-401 ISSN 0730-7268 1552-8618 journal-article 2011 crwiley https://doi.org/10.1002/etc.745 2024-05-03T11:27:47Z Abstract Bioremediation has been used to remediate petroleum hydrocarbon (PHC)‐contaminated sites in polar regions; however, limited knowledge exists in understanding how frozen conditions influence factors that regulate microbial activity. We hypothesized that increased liquid water (θ liquid ) would affect nutrient supply rates (NSR) and gas diffusion under frozen conditions. If true, management practices that increase θ liquid should also increase bioremediation in polar soils by reducing nutrient and oxygen limitations. Influence of θ liquid on NSR was determined using diesel‐contaminated soil (0–8,000 mg kg −1 ) from Casey Station, Antarctica. The θ liquid was altered between 0.007 and 0.035 cm 3 cm −3 by packing soil cores at different bulk densities. The nutrient supply rate of NH and NO , as well as gas diffusion coefficient, D s , were measured at two temperatures, 21°C and −5°C, to correct for bulk density effects. Freezing decreased NSR of both NH and NO , with θ liquid linked to nitrate and ammonia NSR in frozen soil. Similarly for D s , decreases due to freezing were much more pronounced in soils with low θ liquid compared to soils with higher θ liquid contents. Additional studies are needed to determine the relationship between degradation rates and θ liquid under frozen conditions. Environ. Toxicol. Chem. 2012;31:395–401. © 2011 SETAC Article in Journal/Newspaper Antarc* Antarctic Antarctica Wiley Online Library Antarctic Casey Station ENVELOPE(110.528,110.528,-66.282,-66.282) Environmental Toxicology and Chemistry 31 2 395 401 |
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Wiley Online Library |
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English |
description |
Abstract Bioremediation has been used to remediate petroleum hydrocarbon (PHC)‐contaminated sites in polar regions; however, limited knowledge exists in understanding how frozen conditions influence factors that regulate microbial activity. We hypothesized that increased liquid water (θ liquid ) would affect nutrient supply rates (NSR) and gas diffusion under frozen conditions. If true, management practices that increase θ liquid should also increase bioremediation in polar soils by reducing nutrient and oxygen limitations. Influence of θ liquid on NSR was determined using diesel‐contaminated soil (0–8,000 mg kg −1 ) from Casey Station, Antarctica. The θ liquid was altered between 0.007 and 0.035 cm 3 cm −3 by packing soil cores at different bulk densities. The nutrient supply rate of NH and NO , as well as gas diffusion coefficient, D s , were measured at two temperatures, 21°C and −5°C, to correct for bulk density effects. Freezing decreased NSR of both NH and NO , with θ liquid linked to nitrate and ammonia NSR in frozen soil. Similarly for D s , decreases due to freezing were much more pronounced in soils with low θ liquid compared to soils with higher θ liquid contents. Additional studies are needed to determine the relationship between degradation rates and θ liquid under frozen conditions. Environ. Toxicol. Chem. 2012;31:395–401. © 2011 SETAC |
format |
Article in Journal/Newspaper |
author |
Harvey, Alexis Nadine Snape, Ian Siciliano, Steven Douglas |
spellingShingle |
Harvey, Alexis Nadine Snape, Ian Siciliano, Steven Douglas Changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons |
author_facet |
Harvey, Alexis Nadine Snape, Ian Siciliano, Steven Douglas |
author_sort |
Harvey, Alexis Nadine |
title |
Changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons |
title_short |
Changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons |
title_full |
Changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons |
title_fullStr |
Changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons |
title_full_unstemmed |
Changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons |
title_sort |
changes in liquid water alter nutrient bioavailability and gas diffusion in frozen antarctic soils contaminated with petroleum hydrocarbons |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1002/etc.745 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fetc.745 https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.745 |
long_lat |
ENVELOPE(110.528,110.528,-66.282,-66.282) |
geographic |
Antarctic Casey Station |
geographic_facet |
Antarctic Casey Station |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Environmental Toxicology and Chemistry volume 31, issue 2, page 395-401 ISSN 0730-7268 1552-8618 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/etc.745 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
31 |
container_issue |
2 |
container_start_page |
395 |
op_container_end_page |
401 |
_version_ |
1800740442349764608 |