厦门大学学报（自然科学版）2011，Vol.50Issue(2)：411-417,7.
海洋酸化正负效应:藻类的生理学响应
Positive and Negative Effects of Ocean Acidification: Physiological Responses of Algae
摘要
Abstract
Increasing atmospheric CO2 concentration leads to ocean acidification, raising the levels of pCO2 , H+ and HCO3 - and decreasing CO3 2- content in seawater and CaCO3 saturating state. The ongoing increase of pCO2 is known to stimulate photosynthesis and growth of some algae, especially under light-limiting conditions , due to additional energy saved from down-regulation of CO2 concentrating mechanisms. However , increased acidity of seawater 1ed to decreased calcification of calcifying algae, threatening their survival. Even for non-calcifying algae, such as diatoms and red tide algal species, CO2 -induced acidification decreases their ability to protect themselves from high light ,leading to higher photoinhibition. At the same time,it enhances respiration . Therefore, ocean acidification displays double edged roles in affecting the algal physiology. Algae or phytoplanktonic cells have to regulate their physiologieal performance in response to the irreversible chemical changes caused by increased pCO2 and acidity. Subsequently, evolutionery adaptation would occur. The oceanic CO2 uptake, along with the ongoing ocean acidification, will depend on the possitive and negative effects of ocean acidification.关键词
CO2/海洋酸化/浮游植物/藻类Key words
CO2 / ocean acidification/ phytoplankton/ algae分类
农业科技引用本文复制引用
高坤山..海洋酸化正负效应:藻类的生理学响应[J].厦门大学学报（自然科学版）,2011,50(2):411-417,7.基金项目
国家重点基础研究发展计划(973)项目(2009CB421207),教育部"长江学者和创新团队发展计划"项目(IRT0941) （973）
国家自然科学基金重点项目(40930846) （40930846）
