Implications and Risks of Climate Change on the Accumulation of Heavy Metals in Ocean and Aquatic Product
學生姓名:
李若涵
指導教授:
凌明沛
學期:
113上
摘 要:
United Nations Framework Convention on Climate Change (UNFCCC) defines "climate change" as changes in the global atmospheric composition caused by human activities, leading to observed natural climate variations over time. Key indicators include global land and ocean warming, ocean acidification, and changes in salinity. This study examines the impact of climate change on heavy metal concentrations in seawater and marine organisms, and evaluates the health risks of consuming contaminated aquatic products. Surface water from the Bohai Sea was analyzed and examined the effects of temperature and pH on heavy metal accumulation. Environmental temperature and pH were altered to observe the health status and heavy metal concentrations in Mytilus galloprovincialis. For juvenile Solea senegalensis, the study focused on mercury accumulation and its effects on the nervous system. The results show that under climate change, the concentrations of copper and arsenic in the surface waters of the Bohai Sea increase, while the concentrations of zinc, lead, cadmium, and mercury decrease. Significant differences in heavy metal accumulation were found in Mytilus galloprovincialis from different regions, with a combined increase in temperature and CO2 leading to a significant rise in certain heavy metal concentrations. Ocean warming increased mercury accumulation in juvenile Solea senegalensis, while ocean acidification inhibited mercury accumulation. Different patterns of mercury accumulation were observed in various tissues and scenarios, leading to varying oxidative stress responses in the nervous system. The study highlights the need for further assessment of climate change’s impact on heavy metal accumulation in marine organisms and the associated health risks from aquatic products consumption