Decadal variations of total organic carbon production in the inner-shelf of the South China Sea and East China Sea

Organic carbon content is one of the major proxies of aquatic primary production and implication of environmental changes. However, there is a scarcity of information regarding the decadal variation of organic carbon production in inner-shelf of South China Sea (SCS) and East China Sea (ECS). To bri...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Abate Rediat [verfasserIn] Chen Changping [verfasserIn] Liang Junrong [verfasserIn] Sun Lin [verfasserIn] Li Xuesong [verfasserIn] Huang Bangqin [verfasserIn] Gao Yahui [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2019

Schlagwörter:	anthropogenic impact climate change decadal variation diatoms environment inner shelf phytoplankton production organic matter production

Übergeordnetes Werk:	In: Open Geosciences - De Gruyter, 2015, 11(2019), 1, Seite 1061-1070
Übergeordnetes Werk:	volume:11 ; year:2019 ; number:1 ; pages:1061-1070

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1515/geo-2019-0082

Katalog-ID:	DOAJ05525800X

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520			\|a Organic carbon content is one of the major proxies of aquatic primary production and implication of environmental changes. However, there is a scarcity of information regarding the decadal variation of organic carbon production in inner-shelf of South China Sea (SCS) and East China Sea (ECS). To bridge this gap of information two sediment cores were collected from the inner shelf of SCS (Leizhou Peninsula) and ECS. Then, Total Organic Carbon (TOC), Total Inorganic Carbon (TIC) and Total Nitrogen (TN) content were examined. The TOC content in the Leizhou Peninsula averaged 0.56% and varied from 0.35% to 0.81%. At decadal time scale, the TOC content of Leizhou Peninsula erratically increased in the last century, and it distinctly peaked after 1990’s. This is related to increased primary production due to the increased input of anthropogenic nutrients and rainfall level. The TOC content of the inner shelf of ECS averaged 0.5% and varied narrowly from 0.46% to 0.53%. The TOC:TN ratio of ECS averaged 5.65 and varied from 4.42 to 7.85, indicating there is high degree of organic matter degradations. The TN:TP ratios were below 10 for the periods before late-1990’s, indicating that there had been a potential nitrogen limitation in the inner shelf of ECS. Generally, this study showed that the TOC and TIC of ECS and SCS inner-shelf had undergone substantial changes in the last century.
650		4	\|a anthropogenic impact
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650		4	\|a organic matter production
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callnumber-first	Q - Science
author	Abate Rediat
spellingShingle	Abate Rediat misc QE1-996.5 misc anthropogenic impact misc climate change misc decadal variation misc diatoms misc environment misc inner shelf misc phytoplankton production misc organic matter production misc Geology Decadal variations of total organic carbon production in the inner-shelf of the South China Sea and East China Sea
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topic_title	QE1-996.5 Decadal variations of total organic carbon production in the inner-shelf of the South China Sea and East China Sea anthropogenic impact climate change decadal variation diatoms environment inner shelf phytoplankton production organic matter production
topic	misc QE1-996.5 misc anthropogenic impact misc climate change misc decadal variation misc diatoms misc environment misc inner shelf misc phytoplankton production misc organic matter production misc Geology
topic_unstemmed	misc QE1-996.5 misc anthropogenic impact misc climate change misc decadal variation misc diatoms misc environment misc inner shelf misc phytoplankton production misc organic matter production misc Geology
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title	Decadal variations of total organic carbon production in the inner-shelf of the South China Sea and East China Sea
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title_full	Decadal variations of total organic carbon production in the inner-shelf of the South China Sea and East China Sea
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title_sort	decadal variations of total organic carbon production in the inner-shelf of the south china sea and east china sea
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title_auth	Decadal variations of total organic carbon production in the inner-shelf of the South China Sea and East China Sea
abstract	Organic carbon content is one of the major proxies of aquatic primary production and implication of environmental changes. However, there is a scarcity of information regarding the decadal variation of organic carbon production in inner-shelf of South China Sea (SCS) and East China Sea (ECS). To bridge this gap of information two sediment cores were collected from the inner shelf of SCS (Leizhou Peninsula) and ECS. Then, Total Organic Carbon (TOC), Total Inorganic Carbon (TIC) and Total Nitrogen (TN) content were examined. The TOC content in the Leizhou Peninsula averaged 0.56% and varied from 0.35% to 0.81%. At decadal time scale, the TOC content of Leizhou Peninsula erratically increased in the last century, and it distinctly peaked after 1990’s. This is related to increased primary production due to the increased input of anthropogenic nutrients and rainfall level. The TOC content of the inner shelf of ECS averaged 0.5% and varied narrowly from 0.46% to 0.53%. The TOC:TN ratio of ECS averaged 5.65 and varied from 4.42 to 7.85, indicating there is high degree of organic matter degradations. The TN:TP ratios were below 10 for the periods before late-1990’s, indicating that there had been a potential nitrogen limitation in the inner shelf of ECS. Generally, this study showed that the TOC and TIC of ECS and SCS inner-shelf had undergone substantial changes in the last century.
abstractGer	Organic carbon content is one of the major proxies of aquatic primary production and implication of environmental changes. However, there is a scarcity of information regarding the decadal variation of organic carbon production in inner-shelf of South China Sea (SCS) and East China Sea (ECS). To bridge this gap of information two sediment cores were collected from the inner shelf of SCS (Leizhou Peninsula) and ECS. Then, Total Organic Carbon (TOC), Total Inorganic Carbon (TIC) and Total Nitrogen (TN) content were examined. The TOC content in the Leizhou Peninsula averaged 0.56% and varied from 0.35% to 0.81%. At decadal time scale, the TOC content of Leizhou Peninsula erratically increased in the last century, and it distinctly peaked after 1990’s. This is related to increased primary production due to the increased input of anthropogenic nutrients and rainfall level. The TOC content of the inner shelf of ECS averaged 0.5% and varied narrowly from 0.46% to 0.53%. The TOC:TN ratio of ECS averaged 5.65 and varied from 4.42 to 7.85, indicating there is high degree of organic matter degradations. The TN:TP ratios were below 10 for the periods before late-1990’s, indicating that there had been a potential nitrogen limitation in the inner shelf of ECS. Generally, this study showed that the TOC and TIC of ECS and SCS inner-shelf had undergone substantial changes in the last century.
abstract_unstemmed	Organic carbon content is one of the major proxies of aquatic primary production and implication of environmental changes. However, there is a scarcity of information regarding the decadal variation of organic carbon production in inner-shelf of South China Sea (SCS) and East China Sea (ECS). To bridge this gap of information two sediment cores were collected from the inner shelf of SCS (Leizhou Peninsula) and ECS. Then, Total Organic Carbon (TOC), Total Inorganic Carbon (TIC) and Total Nitrogen (TN) content were examined. The TOC content in the Leizhou Peninsula averaged 0.56% and varied from 0.35% to 0.81%. At decadal time scale, the TOC content of Leizhou Peninsula erratically increased in the last century, and it distinctly peaked after 1990’s. This is related to increased primary production due to the increased input of anthropogenic nutrients and rainfall level. The TOC content of the inner shelf of ECS averaged 0.5% and varied narrowly from 0.46% to 0.53%. The TOC:TN ratio of ECS averaged 5.65 and varied from 4.42 to 7.85, indicating there is high degree of organic matter degradations. The TN:TP ratios were below 10 for the periods before late-1990’s, indicating that there had been a potential nitrogen limitation in the inner shelf of ECS. Generally, this study showed that the TOC and TIC of ECS and SCS inner-shelf had undergone substantial changes in the last century.
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title_short	Decadal variations of total organic carbon production in the inner-shelf of the South China Sea and East China Sea
url	https://doi.org/10.1515/geo-2019-0082 https://doaj.org/article/16b0eaf53ed8416796eecc93346ef0b5 https://doaj.org/toc/2391-5447
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Decadal variations of total organic carbon production in the inner-shelf of the South China Sea and East China Sea

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