Journal of Tropical Oceanography ›› 2025, Vol. 44 ›› Issue (3): 95-103.doi: 10.11978/2024128CSTR: 32234.14.2024128

• Marine Biology • Previous Articles     Next Articles

Assessment of carbon sequestration capacity of cultivated bivalves and influencing factors in Yantai sea areas

WANG Zheng1(), YANG Tao2, WANG Yina1, LI Ming3(), PEI Pengbing4, DU Hong4, ZHANG Jianbai2(), SHEN Pingping1()   

  1. 1. Ocean School, Yantai University, Yantai 264005, China
    2. Yantai Marine Economy Research Institute, Yantai 264005, China
    3. Yantai Ecological Environment Monitoring Center, Shandong Province, Yantai 264000, China
    4. Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou 515063, China
  • Received:2024-06-24 Revised:2024-08-02 Online:2025-05-10 Published:2025-06-04
  • Contact: LI Ming, ZHANG Jianbai, SHEN Pingping
  • Supported by:
    Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University(GPKLMD2023001); Open Project of the National Key Laboratory for Environmental Protection of Coastal Ecological Environment(202311); National Natural Science Foundation of China(42376159)

Abstract:

Bivalves play an important role as carbon sinks by absorbing and fixing CO2 in seawater. This study explores the carbon sequestration capacity (CSC) of different species and sizes of bivalves cultivated in Yantai sea areas to determine their carbon stocks. The results showed that the CSC of different species varied greatly, and increased significantly with the individual size. The CSC of Crassostrea gigas (farmed C. gigas), Ostrea plicatula (wild C. gigas), Chlamys farreri, Argopecten irradians and Mytilus galloprovincialis were 3.37’16.64, 2.87’14.17, 0.21’2.10, 0.87’1.58 and 0.21’0.38 g·a-1·ind-1, respectively. The CSC of oysters was much higher than that of scallops and mussels (P<0.01), and there was no significant difference among sampling sites. In addition, based on the measured and the standard reference values of bivalves carbon sink evaluation parameters, the actual measured amount of oyster carbon sinks in three study areas of Yantai was significantly higher than the estimation based on standard reference values (P<0.01), but the result was opposite for scallops. There was significant difference between the actual measured amount of carbon sinks and the standard estimation of A. irradians and M. galloprovincialis in Changdao waters (P<0.01), which was related to bivalve species and individual sizes. The results showed that the setting of parameters in the bivalve carbon sink evaluation model should take into account not only the composition of the species but also the individual size.

Key words: bivalve, carbon sequestration capacity, carbon sink, Yantai sea areas

CLC Number: 

  • X17