Benthic nutrient recycling in shallow coastal waters of the Bohai Sea

Liu Sumei; Zhang Jing; Chen Hongtao; T. Raabe

doi:10.1007/BF02843630

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Benthic nutrient recycling in shallow coastal waters of the Bohai Sea

OriginalPaper | Updated：2023-05-16

- Benthic nutrient recycling in shallow coastal waters of the Bohai Sea
- Benthic nutrient recycling in shallow coastal waters of the Bohai Sea
- 海洋湖沼学报（英文） 2004年22卷第4期页码：365-372
- Affiliations：
  
  1. College of Chemistry and Chemical Engineering Ocean University of Qingdao
  2. State Key Laboratory of Estuarine and Coastal Research East China Normal University
  3. Institute of Biogeochemistry and Marine Chemistry University of Hamburg
- Author bio：
- Funds：
  
  This study was funded by NSFC (Nos. 40036010 and 40206017), and the Special Funds from National Key Basic Research Program of P. R. China (No. 2001CB409703).
- DOI：10.1007/BF02843630
  中图分类号：
- 纸质出版：2004
- Accepted：
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Benthic nutrient recycling in shallow coastal waters of the Bohai Sea[J]. 海洋湖沼学报（英文）, 2004,22(4):365-372.

Sumei, L., Jing, Z., Hongtao, C. et al. Benthic nutrient recycling in shallow coastal waters of the Bohai Sea., Chin. J. Ocean. Limnol. 22, 365–372 (2004). https://doi.org/10.1007/BF02843630
Benthic nutrient recycling in shallow coastal waters of the Bohai Sea[J]. 海洋湖沼学报（英文）, 2004,22(4):365-372. DOI： 10.1007/BF02843630.

Sumei, L., Jing, Z., Hongtao, C. et al. Benthic nutrient recycling in shallow coastal waters of the Bohai Sea., Chin. J. Ocean. Limnol. 22, 365–372 (2004). https://doi.org/10.1007/BF02843630 DOI：

摘要

Abstract

Sediment-water fluxes of N and P species in the Bohai Sea were investigated in September-October 1998 and April–May 1999. The benthic fluxes of nutrient species were determined by incubating sediment core samples with bottom seawater bubbled with air or nitrogen. NO 2 −

NH 4 +

dissolved organic nitrogen (DON) and phosphorus (DOP)

total dissolved nitrogen (TDN) and phosphorus (TDP)

and PO 4 3− showed a net exchange flux from seawater to sediment

while NO 3 −

dissolved inorganic nitrogen (DIN) and SiO 3 2− were released from sediment to seawater in the Bohai Sea. Sediment-water nutrient exchange increases DIN and reduces the phosphorus load in the Bohai Sea. The release of silicate from sediment to overlying seawater reduces potential silicate limitation of primary production resulted from decrease of riverine discharge. The exchange flux of nutrients showed no obvious seasonal variation. The present study showed that the concentrations and composition of nutrients in the water column were affected by suspended sediment

and that not all the exchangeable phosphate in sediment could be released via sediment resuspension.

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references

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