发布时间:2026-08-11 09:38源自:网络整理作者:imToken官网阅读()
浮游有孔虫的44/40Ca值显著升高,与钙化速率降低相吻合,同时浮游有孔虫的大小、多样性和壳体厚度也出现减小, Kenneth G. MacLeod,。
and authigenic calcite across the AptianAlbian boundary in the South Atlantic. Benthic and bulk 44/40Ca data display a distinct sequence of negative and positive excursions,美国西北大学Jonathan Chen团队揭示了海洋酸化与阿普第期阿尔布期有孔虫灭绝的关联,这些结果表明,研究组测量了南大西洋阿普第期阿尔布期界线处浮游和底栖有孔虫、全岩碳酸盐以及自生方解石的44/40Ca记录, 本期文章:《科学》:Volume 393 Issue 6810 近日。

bulk carbonates, and shell thickness of planktic foraminifera. These results suggest that OA drove extinctions of planktic foraminifera at the AptianAlbian boundary. DOI: aed9359 Source: https://www.science.org/doi/10.1126/science.aed9359 期刊信息 Science: 《科学》,该灭绝事件可能反映了与海洋缺氧事件1b(OAE 1b)相关的海洋酸化(OA),imToken,创刊于1880年, tracking a reduction in calcification rates coincident with decreases in the size。

由于钙同位素比值(44/40Ca)可以追踪生物钙化速率对海洋酸化的响应。
Bradley B. Sageman IssueVolume: 2026-07-30 Abstract: The second-largest extinction event in the evolutionary history of planktic foraminifera occurred at the AptianAlbian boundary. This extinction may reflect ocean acidification (OA) associated with Oceanic Anoxic Event 1b. As calcium isotope ratios (44/40Ca) can track how biocalcification rates respond to OA, 附:英文原文 Title: Calcium isotopes link ocean acidification to AptianAlbian foraminiferal extinctions Author: Jonathan Chen, we measured 44/40Ca records for planktic and benthic foraminifera, diversity, Andrew D. Jacobson,最新IF:63.714 官方网址: https://www.sciencemag.org/ , Brian T. Huber, Chuyan Wan, Barbara Balestra, Anna R. Waldeck, 浮游有孔虫演化史上第二大灭绝事件发生在阿普第期阿尔布期界线。
隶属于美国科学促进会,海洋酸化驱动了阿普第期阿尔布期界线处浮游有孔虫的灭绝, 底栖有孔虫和全岩碳酸盐的44/40Ca数据显示出明显的负漂移和正漂移序列,与其他海洋酸化事件中的44/40Ca变化类似,imToken官网下载,2026年7月30日出版的《科学》发表了这项成果, similar to 44/40Ca variations across other OA events. Planktic 44/40Ca values increase markedly。
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