Interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical properties
Few studies have incorporated the tools of stable isotopes and optical properties to study the biogeochemical process of organic matter (OM), including particulate organic matter (POM) and dissolved organic matter (DOM), which prevents our comprehension of the interactions between POM and DOM in the...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-02-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2023.1144818/full |
| _version_ | 1797901811479216128 |
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| author | Xuan Lu Xuan Lu Xuan Lu Chao Wang Chao Wang Chao Wang Qibin Lao Qibin Lao Qibin Lao Guangzhe Jin Guangzhe Jin Guangzhe Jin Fajin Chen Fajin Chen Fajin Chen Xin Zhou Xin Zhou Xin Zhou Chunqing Chen Chunqing Chen Chunqing Chen |
| author_facet | Xuan Lu Xuan Lu Xuan Lu Chao Wang Chao Wang Chao Wang Qibin Lao Qibin Lao Qibin Lao Guangzhe Jin Guangzhe Jin Guangzhe Jin Fajin Chen Fajin Chen Fajin Chen Xin Zhou Xin Zhou Xin Zhou Chunqing Chen Chunqing Chen Chunqing Chen |
| author_sort | Xuan Lu |
| collection | DOAJ |
| description | Few studies have incorporated the tools of stable isotopes and optical properties to study the biogeochemical process of organic matter (OM), including particulate organic matter (POM) and dissolved organic matter (DOM), which prevents our comprehension of the interactions between POM and DOM in the marine environment. In this study, the origin, distribution, and fate of POM and DOM in Tieshangang Bay, a weak dynamic bay were investigated by measuring δ13C and δ15N of POM, dissolved organic carbon (DOC), and absorption and fluorescence of DOM (CDOM and FDOM). In the upper bay, POM source was mainly originated from terrestrial discharge, whereas the high fluorescence index (FI) indicated that external aquatic organism activity dominated DOM sources. In contrast, in the outer bay, the slightly increased δ13C and enriched δ15N of POM and enhanced fluorescence intensities of protein-like DOM components indicated the considerable contributions of the in situ biological activities to OM. A net addition of DOC and optical components of DOM occurred in both the upper and outer bays. The decomposition of terrestrial POM was responsible for the addition of DOM due to the weak dynamics in the upper bay, whereas the enhanced primary production and the strong decomposition of freshly produced POM jointly contributed to the addition of DOM in the outer bay. Our study suggests that hydrodynamics regulate the biogeochemistry and interactions of POM and DOM in the weak dynamic bay. |
| first_indexed | 2024-04-10T09:07:50Z |
| format | Article |
| id | doaj.art-8ce54cae155545df9ebc84ace2d6e544 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-10T09:07:50Z |
| publishDate | 2023-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-8ce54cae155545df9ebc84ace2d6e5442023-02-21T05:19:31ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452023-02-011010.3389/fmars.2023.11448181144818Interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical propertiesXuan Lu0Xuan Lu1Xuan Lu2Chao Wang3Chao Wang4Chao Wang5Qibin Lao6Qibin Lao7Qibin Lao8Guangzhe Jin9Guangzhe Jin10Guangzhe Jin11Fajin Chen12Fajin Chen13Fajin Chen14Xin Zhou15Xin Zhou16Xin Zhou17Chunqing Chen18Chunqing Chen19Chunqing Chen20College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory for Coastal Ocean Variation and Disaster Prediction, 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, ChinaCollege of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory for Coastal Ocean Variation and Disaster Prediction, 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, ChinaCollege of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory for Coastal Ocean Variation and Disaster Prediction, 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, ChinaCollege of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory for Coastal Ocean Variation and Disaster Prediction, 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, ChinaCollege of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory for Coastal Ocean Variation and Disaster Prediction, 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, ChinaCollege of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory for Coastal Ocean Variation and Disaster Prediction, 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, ChinaCollege of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaKey Laboratory for Coastal Ocean Variation and Disaster Prediction, 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, ChinaFew studies have incorporated the tools of stable isotopes and optical properties to study the biogeochemical process of organic matter (OM), including particulate organic matter (POM) and dissolved organic matter (DOM), which prevents our comprehension of the interactions between POM and DOM in the marine environment. In this study, the origin, distribution, and fate of POM and DOM in Tieshangang Bay, a weak dynamic bay were investigated by measuring δ13C and δ15N of POM, dissolved organic carbon (DOC), and absorption and fluorescence of DOM (CDOM and FDOM). In the upper bay, POM source was mainly originated from terrestrial discharge, whereas the high fluorescence index (FI) indicated that external aquatic organism activity dominated DOM sources. In contrast, in the outer bay, the slightly increased δ13C and enriched δ15N of POM and enhanced fluorescence intensities of protein-like DOM components indicated the considerable contributions of the in situ biological activities to OM. A net addition of DOC and optical components of DOM occurred in both the upper and outer bays. The decomposition of terrestrial POM was responsible for the addition of DOM due to the weak dynamics in the upper bay, whereas the enhanced primary production and the strong decomposition of freshly produced POM jointly contributed to the addition of DOM in the outer bay. Our study suggests that hydrodynamics regulate the biogeochemistry and interactions of POM and DOM in the weak dynamic bay.https://www.frontiersin.org/articles/10.3389/fmars.2023.1144818/fullbiogeochemistryparticulate organic matterdissolved organic matterisotopic and optical analysesBeibu Gulf |
| spellingShingle | Xuan Lu Xuan Lu Xuan Lu Chao Wang Chao Wang Chao Wang Qibin Lao Qibin Lao Qibin Lao Guangzhe Jin Guangzhe Jin Guangzhe Jin Fajin Chen Fajin Chen Fajin Chen Xin Zhou Xin Zhou Xin Zhou Chunqing Chen Chunqing Chen Chunqing Chen Interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical properties Frontiers in Marine Science biogeochemistry particulate organic matter dissolved organic matter isotopic and optical analyses Beibu Gulf |
| title | Interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical properties |
| title_full | Interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical properties |
| title_fullStr | Interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical properties |
| title_full_unstemmed | Interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical properties |
| title_short | Interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical properties |
| title_sort | interactions between particulate organic matter and dissolved organic matter in a weak dynamic bay revealed by stable isotopes and optical properties |
| topic | biogeochemistry particulate organic matter dissolved organic matter isotopic and optical analyses Beibu Gulf |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2023.1144818/full |
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