Pacific oyster(Crassostrea gigas)shell growth duration in a year in Bohai Bay and implication for its carbon sink potential  

作　　者：Wen-yu Wang Chang-fu Fan Zhao-jun Song Hong Wang Fu Wang 

机构地区：[1]Qingdao Geotechnical Investigation and Surveying Research Institute,Qingdao 266033,China [2]MRL Key laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China [3]College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China [4]Tianjin Centre,China Geological Survey,Tianjin 300170,China

出　　处：《China Geology》2024年第4期653-660,共8页中国地质（英文）

基　　金：financial support from NSFC(Account 41473013,40872106,and 41627802)。

摘　　要：Oyster is a bivalve mollusk widely distributed in estuarine and shallow sea environments.Its growth and burial process is a carbon sequestration and storage process.Oyster shell may stop growing due to suffer from freeze shock during the winter season within a temperate climate,therefore,in order to study the carbon sequestration capacity of oysters we need to know the water temperature at which the shell suffer from winter freeze shock.This study examinesδ^(18)O profiles across consecutive micro-growth layers found in three modern Pacific oyster shells from the northwest coast of Bohai Bay.A total of 165 oxygen isotope values from sequential samples of their left shells showed periodically varying values,and the variation fluctuation of oxygen isotope values was 4.97‰on average.According to the variation range of the oxygen isotope value of the shell,combined with the sea surface temperature and the sea surface salinity data of the water in which the oysters grew,the water temperature that suffer from winter freeze shock and stops or retards the growth of Pacific oysters in Bohai Bay is about 8.3℃,and the corresponding period is from December to March of the following year.The calcification time of oysters within one year is nearly a month longer than previously thought,therefore,its carbon sink potential is also improved.

关 键 词：Crassostrea gigas Winter freeze shock Oxygen isotope Bohai Bay Carbon sequestration and storage Environmental geological survey 

分 类 号：Q178[生物学—水生生物学]