Export is not enough: nutrient cycling and carbon sequestration

Marine Ecology Progress Series

Anand Gnanadesikan¹  Irina Marinov¹ 

关键词: Ocean iron fertilization;    Preformed nutrients;    Carbon sequestration;   

DOI  :  10.3354/meps07550

学科分类：海洋学与技术

来源: Inter-Research

【 摘 要 】

ABSTRACT: The question of whether ocean iron fertilization (OIF) can yield verifiable carbon sequestration is often cast in terms of whether fertilization results in enhanced particle export. However, model studies show that oceanic carbon storage is only weakly related to global particle export—depending instead on an increase in the carbon associated with the pool of remineralized nutrients. The magnitude of such an increase depends on circulation, stoichiometric ratios and gas exchange. We argue that this puts serious challenges before efforts to properly credit OIF that must be taken into account at the design stage.

【 授权许可】

Unknown