Photomineralization of organic carbon in a eutrophic, semiarid estuary
Abstract The effect of photomineralization on the carbon cycle in a eutrophic, semiarid estuary (Baffin Bay, Texas) was investigated using closed‐system incubations. Photochemical production rate of dissolved inorganic carbon ranged from 0.16 to 0.68 μ M hr −1 , with a daily removal of 0.3∼1.5% of t...
Published in: | Limnology and Oceanography Letters |
---|---|
Main Authors: | , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2020
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/lol2.10146 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flol2.10146 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10146 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lol2.10146 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10146 |
id |
crwiley:10.1002/lol2.10146 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/lol2.10146 2024-06-23T07:51:28+00:00 Photomineralization of organic carbon in a eutrophic, semiarid estuary Wang, Hongjie Hu, Xinping Wetz, Michael S. Hayes, Kenneth C. Lu, Kaijun Texas Sea Grant, Texas A and M University U.S. Department of Commerce National Oceanic and Atmospheric Administration 2020 http://dx.doi.org/10.1002/lol2.10146 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flol2.10146 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10146 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lol2.10146 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10146 en eng Wiley http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ Limnology and Oceanography Letters volume 5, issue 3, page 246-253 ISSN 2378-2242 2378-2242 journal-article 2020 crwiley https://doi.org/10.1002/lol2.10146 2024-06-04T06:42:58Z Abstract The effect of photomineralization on the carbon cycle in a eutrophic, semiarid estuary (Baffin Bay, Texas) was investigated using closed‐system incubations. Photochemical production rate of dissolved inorganic carbon ranged from 0.16 to 0.68 μ M hr −1 , with a daily removal of 0.3∼1.5% of the standing stock of dissolved organic carbon (DOC). The photomineralization rate was negatively correlated with chlorophyll a concentration, suggesting that plankton‐derived DOC was less photoreactive to solar radiation. The stable carbon isotope composition (δ 13 C∼ −18.6‰) of degraded DOC, as calculated using the DIC “Keeling” plot, further indicated high photochemical lability of 13 C‐enriched DOC in this semiarid environment. Our finding showed that photomineralization of 13 C‐enriched DOC is an important component of carbon cycle in this system, and this process does not necessarily remove 13 C‐depleted organic carbon as observed in other coastal systems. Article in Journal/Newspaper Baffin Bay Wiley Online Library Baffin Bay Limnology and Oceanography Letters 5 3 246 253 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract The effect of photomineralization on the carbon cycle in a eutrophic, semiarid estuary (Baffin Bay, Texas) was investigated using closed‐system incubations. Photochemical production rate of dissolved inorganic carbon ranged from 0.16 to 0.68 μ M hr −1 , with a daily removal of 0.3∼1.5% of the standing stock of dissolved organic carbon (DOC). The photomineralization rate was negatively correlated with chlorophyll a concentration, suggesting that plankton‐derived DOC was less photoreactive to solar radiation. The stable carbon isotope composition (δ 13 C∼ −18.6‰) of degraded DOC, as calculated using the DIC “Keeling” plot, further indicated high photochemical lability of 13 C‐enriched DOC in this semiarid environment. Our finding showed that photomineralization of 13 C‐enriched DOC is an important component of carbon cycle in this system, and this process does not necessarily remove 13 C‐depleted organic carbon as observed in other coastal systems. |
author2 |
Texas Sea Grant, Texas A and M University U.S. Department of Commerce National Oceanic and Atmospheric Administration |
format |
Article in Journal/Newspaper |
author |
Wang, Hongjie Hu, Xinping Wetz, Michael S. Hayes, Kenneth C. Lu, Kaijun |
spellingShingle |
Wang, Hongjie Hu, Xinping Wetz, Michael S. Hayes, Kenneth C. Lu, Kaijun Photomineralization of organic carbon in a eutrophic, semiarid estuary |
author_facet |
Wang, Hongjie Hu, Xinping Wetz, Michael S. Hayes, Kenneth C. Lu, Kaijun |
author_sort |
Wang, Hongjie |
title |
Photomineralization of organic carbon in a eutrophic, semiarid estuary |
title_short |
Photomineralization of organic carbon in a eutrophic, semiarid estuary |
title_full |
Photomineralization of organic carbon in a eutrophic, semiarid estuary |
title_fullStr |
Photomineralization of organic carbon in a eutrophic, semiarid estuary |
title_full_unstemmed |
Photomineralization of organic carbon in a eutrophic, semiarid estuary |
title_sort |
photomineralization of organic carbon in a eutrophic, semiarid estuary |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/lol2.10146 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flol2.10146 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10146 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lol2.10146 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lol2.10146 |
geographic |
Baffin Bay |
geographic_facet |
Baffin Bay |
genre |
Baffin Bay |
genre_facet |
Baffin Bay |
op_source |
Limnology and Oceanography Letters volume 5, issue 3, page 246-253 ISSN 2378-2242 2378-2242 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/lol2.10146 |
container_title |
Limnology and Oceanography Letters |
container_volume |
5 |
container_issue |
3 |
container_start_page |
246 |
op_container_end_page |
253 |
_version_ |
1802642587120566272 |