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对于大西洋中小型海底鱼类 (Clupeiformes) 的 δ13C值的脂质校正模型

Fany Sardenne¹, Thomas Raynon¹, Jean-Marie Munaron¹

¹IRD, Univ Brest, CNRS, Ifremer, LEMAR, F-29280, Plouzané, France.

Marine environmental research

|October 2, 2023

概括

使用碳同位素比率 (δ¹³C) 在热带生态中标准化脂质含量至关重要. 一个Clupeiformes鱼类的全球模型提供了准确的δ¹³C值,简化了分析,并可能对其他物种进行概括.

科学领域:

生态生态学生态生态学
生物地质化学生物地质化学
同位素分析分析同位素分析

背景情况:

在热带生态学中准确解释碳同位素比率 (δ¹³C) 需要考虑生物体的脂质含量,通常通过C:N比率估计.
传统的脂质提取方法耗时,导致数学校正模型的发展.
现有的模型经常建议对物种进行特定的调整,以获得最佳的准确性.

研究的目的:

通过使用数学校正,确定标准化小鱼 (Clupeiformes) 中 δ13C值的最佳分类层次.
为了比较特定物种与更广泛的分类学模型在 δ ¹³ C 分析中的脂质校正的有效性.
评估基于C:N比的线性和质量平衡模型,以纠正 δ¹³C值.

主要方法:

分析了六种Clupeiformes的散装和无脂 δ13C值.
在各种分类层面 (物种,序列) 调整和验证线性和质量平衡模型.
来自不同模型的校正 δ¹³C 值与无脂测量值的比较.

主要成果:

应用于Clupeiformes序列的全球模型产生了与特定物种模型相比或更好的校正的δ¹³C值.
线性模型在订单层面上表现出了高于质量平衡模型的性能.
该研究发现,Clupeiformes的全球模型可以有效地标准化δ¹³C值,减少对特定物种调整的需求.

结论:

在顺序层面 (Clupeiformes) 的一个通用的脂质校正模型是有效的标准化C值在热带生态学.
这种方法简化了同位素分析,并为相关物种的更广泛应用提供了潜力.
推使用线性模型来纠正基于该分类组内的C:N比值的δ¹³C值.

关键词:

这是一个C:N比率.碳同位素是碳的同位素之一.它们是Clupeiformes.脂质的去除脂质的去除热带生态学热带生态学

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