Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea
Author Posting. © Inter-Research, 2005. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 290 (2005): 1-14, doi:10.3354/meps290001. Microbial consumption is the dominant sink of...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/4493 2023-05-15T15:40:12+02:00 Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea Xie, Huixiang Zafiriou, Oliver C. Umile, Thomas P. Kieber, David J. 2005-04-13 application/pdf https://hdl.handle.net/1912/4493 en eng Inter-Research https://doi.org/10.3354/meps290001 Marine Ecology Progress Series 290 (2005): 1-14 https://hdl.handle.net/1912/4493 doi:10.3354/meps290001 Marine Ecology Progress Series 290 (2005): 1-14 doi:10.3354/meps290001 Carbon monoxide Microbial consumption Wright-Hobbie kinetics Marine waters Article 2005 ftwhoas https://doi.org/10.3354/meps290001 2022-05-28T22:58:20Z Author Posting. © Inter-Research, 2005. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 290 (2005): 1-14, doi:10.3354/meps290001. Microbial consumption is the dominant sink of oceanic carbon monoxide (CO), one of the major carbon-containing photoproducts of chromophoric dissolved organic matter in marine waters. This study presents first-order microbial CO consumption rate constants (kCO) determined using whole-water dark incubations in summer and fall in diverse marine ecosystems covering the Delaware Bay, NW Atlantic, and Beaufort Sea. The microbial CO consumption rate constant, kCO (mean ± SD) was 1.11 ± 0.76 h–1 in the Delaware Bay, 0.33 ± 0.26 h–1 in the coastal Atlantic, 0.099 ± 0.054 h–1 in the open Atlantic, 0.040 ± 0.012 h–1 in the coastal Beaufort Sea and 0.020 ± 0.0060 h–1 in the offshore Beaufort Sea. The kCO in the Delaware Bay covaried with chlorophyll a concentration ([chl a]), rising with increasing salinity in the range 0 to 19 and diminishing with further increasing salinity. The kCO in the Beaufort Sea is significantly positively correlated with [chl a]. Both the Atlantic and cross-system data sets showed significant positive correlations between kCO and the product of [chl a] and water temperature, suggesting that [chl a] can be used as an indicator of CO-consuming bacterial activity in the areas and seasons sampled in this study. Microbial CO consumption was shown to follow Wright-Hobbie kinetics, with variable but low half-saturation concentrations: ~1 nM in the Beaufort Sea and Gulf Stream and 2 to 18 nM in the coastal NW Atlantic. These low half-saturation concentrations suggest that microbial CO consumption in seawater is at times partly saturated, and that some previous microbial CO consumption rates determined with the commonly used 14CO method could be underestimates due to the addition of 14CO as a tracer substrate. The present study provides valuable data ... Article in Journal/Newspaper Beaufort Sea Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Marine Ecology Progress Series 290 1 14 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Carbon monoxide Microbial consumption Wright-Hobbie kinetics Marine waters |
spellingShingle |
Carbon monoxide Microbial consumption Wright-Hobbie kinetics Marine waters Xie, Huixiang Zafiriou, Oliver C. Umile, Thomas P. Kieber, David J. Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea |
topic_facet |
Carbon monoxide Microbial consumption Wright-Hobbie kinetics Marine waters |
description |
Author Posting. © Inter-Research, 2005. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 290 (2005): 1-14, doi:10.3354/meps290001. Microbial consumption is the dominant sink of oceanic carbon monoxide (CO), one of the major carbon-containing photoproducts of chromophoric dissolved organic matter in marine waters. This study presents first-order microbial CO consumption rate constants (kCO) determined using whole-water dark incubations in summer and fall in diverse marine ecosystems covering the Delaware Bay, NW Atlantic, and Beaufort Sea. The microbial CO consumption rate constant, kCO (mean ± SD) was 1.11 ± 0.76 h–1 in the Delaware Bay, 0.33 ± 0.26 h–1 in the coastal Atlantic, 0.099 ± 0.054 h–1 in the open Atlantic, 0.040 ± 0.012 h–1 in the coastal Beaufort Sea and 0.020 ± 0.0060 h–1 in the offshore Beaufort Sea. The kCO in the Delaware Bay covaried with chlorophyll a concentration ([chl a]), rising with increasing salinity in the range 0 to 19 and diminishing with further increasing salinity. The kCO in the Beaufort Sea is significantly positively correlated with [chl a]. Both the Atlantic and cross-system data sets showed significant positive correlations between kCO and the product of [chl a] and water temperature, suggesting that [chl a] can be used as an indicator of CO-consuming bacterial activity in the areas and seasons sampled in this study. Microbial CO consumption was shown to follow Wright-Hobbie kinetics, with variable but low half-saturation concentrations: ~1 nM in the Beaufort Sea and Gulf Stream and 2 to 18 nM in the coastal NW Atlantic. These low half-saturation concentrations suggest that microbial CO consumption in seawater is at times partly saturated, and that some previous microbial CO consumption rates determined with the commonly used 14CO method could be underestimates due to the addition of 14CO as a tracer substrate. The present study provides valuable data ... |
format |
Article in Journal/Newspaper |
author |
Xie, Huixiang Zafiriou, Oliver C. Umile, Thomas P. Kieber, David J. |
author_facet |
Xie, Huixiang Zafiriou, Oliver C. Umile, Thomas P. Kieber, David J. |
author_sort |
Xie, Huixiang |
title |
Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea |
title_short |
Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea |
title_full |
Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea |
title_fullStr |
Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea |
title_full_unstemmed |
Biological consumption of carbon monoxide in Delaware Bay, NW Atlantic and Beaufort Sea |
title_sort |
biological consumption of carbon monoxide in delaware bay, nw atlantic and beaufort sea |
publisher |
Inter-Research |
publishDate |
2005 |
url |
https://hdl.handle.net/1912/4493 |
genre |
Beaufort Sea |
genre_facet |
Beaufort Sea |
op_source |
Marine Ecology Progress Series 290 (2005): 1-14 doi:10.3354/meps290001 |
op_relation |
https://doi.org/10.3354/meps290001 Marine Ecology Progress Series 290 (2005): 1-14 https://hdl.handle.net/1912/4493 doi:10.3354/meps290001 |
op_doi |
https://doi.org/10.3354/meps290001 |
container_title |
Marine Ecology Progress Series |
container_volume |
290 |
container_start_page |
1 |
op_container_end_page |
14 |
_version_ |
1766372329405808640 |