Aluminum effects on marine phytoplankton: implications for a revised Iron Hypothesis (Iron-Aluminum Hypothesis)
Zhou, LB; Tan, YH; Huang, LM; Fortin, C; Campbell, PGC; zhoulb@scsio.ac.cn; tanyh@scsio.ac.cn
2018
发表期刊BIOGEOCHEMISTRY
卷号139期号:2页码:123-137
摘要In contrast to substantial studies and established knowledge of aluminum (Al) effects (mainly toxicity) on freshwater organisms and terrestrial plants, and even on human health, only a few studies of Al effects on marine organisms have been reported, and our understanding of the role of Al in marine biogeochemistry is limited. In this paper, we review the results of both field and laboratory experiments on the effects of Al on marine organisms, including Al toxicity to marine phytoplankton and the beneficial effects of Al on marine phytoplankton growth, and we discuss possible links of Al to the biological pump and the global carbon cycle. We propose a revised Iron (Fe) Hypothesis, i.e., the Fe-Al Hypothesis that introduces the idea that Al as well as Fe play an important role in the glacial-interglacial change in atmospheric CO2 concentrations and climate change. We propose that Al could not only facilitate Fe utilization, dissolved organic phosphorus utilization and nitrogen fixation by marine phytoplankton, enhancing phytoplankton biomass and carbon fixation in the upper oceans, but also reduce the decomposition and decay of biogenic matter. As a result, Al allows potentially more carbon to be exported and sequestered in the ocean depths through the biological pump. We also propose that Al binds to superoxide to form an Al-superoxide complex, which could catalyze the reduction of Fe(III) to Fe(II) and thus facilitate Fe utilization by marine phytoplankton and other microbes. Further ocean fertilization experiments with Fe and Al are suggested, to clarify the role of Al in the stimulation of phytoplankton growth and carbon sequestration in the ocean depths.
部门归属[Zhou, Linbin; Tan, Yehui; Huang, Liangmin] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Guangdong, Peoples R China; [Zhou, Linbin; Fortin, Claude; Campbell, Peter G. C.] Ctr Eau Terre Environm, Inst Natl Rech Sci, Quebec City, PQ, Canada; [Zhou, Linbin] Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Prov Key Lab Appl Marine Biol, Guangzhou, Guangdong, Peoples R China; [Zhou, Linbin; Tan, Yehui; Huang, Liangmin] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
学科领域Environmental Sciences & Ecology ; Geology
关键词[WOS]Aluminum ; Marine phytoplankton ; Iron Hypothesis ; Fe-Al Hypothesis ; Beneficial effects ; Biological pump
资助项目LMB
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16925
专题中科院海洋生物资源可持续利用重点实验室
通讯作者zhoulb@scsio.ac.cn; tanyh@scsio.ac.cn
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GB/T 7714
Zhou, LB,Tan, YH,Huang, LM,et al. Aluminum effects on marine phytoplankton: implications for a revised Iron Hypothesis (Iron-Aluminum Hypothesis)[J]. BIOGEOCHEMISTRY,2018,139(2):123-137.
APA Zhou, LB.,Tan, YH.,Huang, LM.,Fortin, C.,Campbell, PGC.,...&tanyh@scsio.ac.cn.(2018).Aluminum effects on marine phytoplankton: implications for a revised Iron Hypothesis (Iron-Aluminum Hypothesis).BIOGEOCHEMISTRY,139(2),123-137.
MLA Zhou, LB,et al."Aluminum effects on marine phytoplankton: implications for a revised Iron Hypothesis (Iron-Aluminum Hypothesis)".BIOGEOCHEMISTRY 139.2(2018):123-137.
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