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为什么水生科学家应该更频繁地使用硫稳定同位素比率 (34S)

Vincent Raoult¹, Alexandra A Phillips², James Nelson³

¹Blue Carbon Lab, School of Life and Environmental Science, Deakin University, VIC, Australia; Marine Ecology Group, School of Natural Sciences, Macquarie University, NSW, Australia.

|March 31, 2024

概括

包括硫 (δ34S) 的稳定同位素与碳 (δ13C) 和 (δ15N) 一起在生态和考古学研究中提供了更确的结果. 省略硫可以导致不确定的或误导性的发现,突出其对强大的科学发现的重要性.

科学领域:

稳定同位素分析在生态学,生理学,生物学和考古学.
光稳定同位素在科学研究中的应用.

背景情况:

碳 (δ13C) 和 (δ15N) 的稳定同位素通常被使用,通常不包括硫 (δ34S).
排除硫同位素可能源于历史成本,时间或仪器仪表的限制.
仅仅依靠碳和同位素可以产生不确定的或误导性的结果.

研究的目的:

审查实例研究,证明结合硫 (δ34S) 稳定同位素的好处.
突出硫同位素数据如何减轻生态和考古研究中的不确定性.
倡导将硫作为"默认"同位素与碳和一起加入.

主要方法:

审查分析生物主题 (利基,生理学,饮食,运动,生物考古学) 的案例研究,使用和不使用硫同位素.
重新分析现有数据,其中包含硫同位素值.
硫同位素热量歧视因子 (TDF) 的初步元分析.

主要成果:

案例研究表明,排除硫同位素会导致不利的结果,不同的解释或错过的发现.
硫同位素分析显示了很小的,但取决于种类的平均热量歧视 (平均-0.4 ± 1.7 ‰ SD).
测量技术的进步减少了对硫同位素分析的障碍.

结论:

结合硫 (δ34S) 稳定同位素对于强大而确的科学发现至关重要.
排除硫同位素限制了生态和考古研究的深度和准确性.
稳定的碳,和硫同位素应该被认为是水生科学研究的新默认.

关键词:

生物考古学的生物考古学生态生态学生态生态学冰岛的风景消失了混合模型的混合模型.利基空间空间是什么?这里是SIA SIA SIA.稳定的同位素是稳定的.

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