Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses
Dissolved organic matter (DOM) serves as the most active and sensitive organic component in the bay, and its biogeochemical characteristics and reactivity are affected by the properties of terrestrial and marine substances significantly. In this study, in order to study the distribution and characte...
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| Format: | Article |
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2022.956930/full |
| _version_ | 1818012977572347904 |
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| author | Yafeng Zhong Gang Pan Gang Pan Hui Zhao Hui Zhao Chao Wang Chao Wang Chao Wang |
| author_facet | Yafeng Zhong Gang Pan Gang Pan Hui Zhao Hui Zhao Chao Wang Chao Wang Chao Wang |
| author_sort | Yafeng Zhong |
| collection | DOAJ |
| description | Dissolved organic matter (DOM) serves as the most active and sensitive organic component in the bay, and its biogeochemical characteristics and reactivity are affected by the properties of terrestrial and marine substances significantly. In this study, in order to study the distribution and characteristics of DOM in a semi-closed bay, 34 water samples from 19 stations were collected from Zhanjiang Bay and analyzed for δ13C of dissolved inorganic carbon (DIC) and fluorescent components of DOM. The results showed that there were many sources of organic matter in the bay, including soil input, algae input, and sewage input. Influenced by freshwater input, DOM in the bay decreased from the upper bay to the outer bay. The organic matter in the bay displayed two characteristics, where the northern bay is composed of terrigenous organic matter mainly with high humus, while the southern bay is more inclined to marine sources with a high biological index (BIX) and low humification index (HIX). The correlation between organic matter with different characteristics and environmental parameters such as salinity, pH, and chlorophyll a was analyzed. The discrepancy may be caused by the weak turbulent mixing in the semi-closed bay. |
| first_indexed | 2024-04-14T06:27:43Z |
| format | Article |
| id | doaj.art-1a33df9cc9204380ad90f854583bc639 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-14T06:27:43Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-1a33df9cc9204380ad90f854583bc6392022-12-22T02:07:45ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452022-07-01910.3389/fmars.2022.956930956930Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical AnalysesYafeng Zhong0Gang Pan1Gang Pan2Hui Zhao3Hui Zhao4Chao Wang5Chao Wang6Chao Wang7College of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, ChinaResearch Center for Coastal Environmental Protection and Ecological Resilience, Guangdong Ocean University, Zhanjiang, ChinaSchool of Humanities, York St. John University, York, United KingdomCollege of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, ChinaResearch Center for Coastal Environmental Protection and Ecological Resilience, Guangdong Ocean University, Zhanjiang, ChinaLaboratory for Coastal Ocean Variation and Disaster Prediction, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory of Climate, Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong Province, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory of Space Ocean Remote Sensing and Application, Ministry of Natural Resources, Beijing, ChinaDissolved organic matter (DOM) serves as the most active and sensitive organic component in the bay, and its biogeochemical characteristics and reactivity are affected by the properties of terrestrial and marine substances significantly. In this study, in order to study the distribution and characteristics of DOM in a semi-closed bay, 34 water samples from 19 stations were collected from Zhanjiang Bay and analyzed for δ13C of dissolved inorganic carbon (DIC) and fluorescent components of DOM. The results showed that there were many sources of organic matter in the bay, including soil input, algae input, and sewage input. Influenced by freshwater input, DOM in the bay decreased from the upper bay to the outer bay. The organic matter in the bay displayed two characteristics, where the northern bay is composed of terrigenous organic matter mainly with high humus, while the southern bay is more inclined to marine sources with a high biological index (BIX) and low humification index (HIX). The correlation between organic matter with different characteristics and environmental parameters such as salinity, pH, and chlorophyll a was analyzed. The discrepancy may be caused by the weak turbulent mixing in the semi-closed bay.https://www.frontiersin.org/articles/10.3389/fmars.2022.956930/fulldissolved organic mattercharacteristicstable isotopeZhanjiang Baysemi-closed bay |
| spellingShingle | Yafeng Zhong Gang Pan Gang Pan Hui Zhao Hui Zhao Chao Wang Chao Wang Chao Wang Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses Frontiers in Marine Science dissolved organic matter characteristic stable isotope Zhanjiang Bay semi-closed bay |
| title | Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses |
| title_full | Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses |
| title_fullStr | Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses |
| title_full_unstemmed | Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses |
| title_short | Characteristics of Dissolved Organic Matter in a Semi-closed Bay in Summer: Insights from Stable Isotope and Optical Analyses |
| title_sort | characteristics of dissolved organic matter in a semi closed bay in summer insights from stable isotope and optical analyses |
| topic | dissolved organic matter characteristic stable isotope Zhanjiang Bay semi-closed bay |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2022.956930/full |
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