评论“海洋缺氧事件 1a 周围地表水酸化对钙质超微化石的响应”。

Comment on "Calcareous nannoplankton response to surface-water acidification around Oceanic Anoxic Event 1a".

机构信息

School of Ocean and Earth Sciences, National Oceanography Centre, Southampton, European Way, Southampton, SO14 3ZH, UK.

出版信息

Science. 2011 Apr 8;332(6026):175; author reply 175. doi: 10.1126/science.1199459.

DOI:10.1126/science.1199459

Abstract

Erba et al. (Reports, 23 July 2010, p. 428) attributed calcareous nannofossil morphology and assemblage changes across Cretaceous Oceanic Anoxic Event 1a to the effects of surface ocean acidification. We argue that the quality of carbonate preservation in these sequences, the unsupported assumptions of the biotic response to acidity, and the absence of independent proxy estimates for ocean pH or atmospheric pCO(2) render this conclusion questionable.

摘要

埃尔巴等人（报告，2010 年 7 月 23 日，第 428 页）认为白垩纪大洋缺氧事件 1a 期间钙质超微化石形态和组合的变化归因于表层海洋酸化的影响。我们认为，这些序列中碳酸盐的保存质量、生物对酸度的反应的无根据假设，以及缺乏海洋 pH 或大气 pCO2 的独立代理估计值，使得这一结论值得怀疑。