Effects of raised CO₂ concentration on the egg production rate and early development of two marine copepods (Acartia steueri and Acartia erythraea)

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• 作者：Kurihara ; Haruko ; Shimode ; Shinji ; Shirayama ; Yoshihisa
• 关键词：Rising atmospheric CO₂ concentration ; CO₂ ocean sequestration ; Biological impact ; Sub-lethal effects ; Copepods
• 刊名：Marine Pollution Bulletin
• 出版年：2004
• 出版时间：November, 2004
• 年：2004
• 卷：49
• 期：9-10
• 页码：721-727
• 全文大小：280 K

文摘

Direct injection of CO₂ into the deep ocean is receiving increasing attention as a way to mitigate increasing atmospheric CO₂ concentration. To assess the potential impact of the environmental change associated with CO₂ sequestration in the ocean, we studied the lethal and sub-lethal effects of raised CO₂ concentration in seawater on adult and early stage embryos of marine planktonic copepods. We found that the reproduction rate and larval development of copepods are very sensitive to increased CO₂ concentration. The hatching rate tended to decrease, and nauplius mortality rate to increase, with increased CO₂ concentration. These results suggest that the marine copepod community will be negatively affected by the disposal of CO₂. This could decrease on the carbon export flux to the deep ocean and change the biological pump. Clearly, further studies are needed to determine whether ocean CO₂ injection is an acceptable strategy to reduce anthropogenic CO₂.