Stable Isotope Ecology
Stable Isotope Ecology
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DOI：
10.1002/9780470015902.a0021231
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发表时间：
2010-01
期刊：
影响因子：
6.1
通讯作者：
J. Newton
中科院分区：
文献类型：
--
作者：
J. Newton
稳定同位素地球化学已被证明是阐明许多生态学问题的一个极其有用的工具，稳定同位素生态学是一系列国际会议的主题（http：www.isoecol.org）。稳定同位素可通过以下方式用作生物示踪剂：（i）查明来源，例如确定食物网中基础碳的身份;（ii）区分来源，例如确定繁殖动物是否使用当地资源或其自身的储备;（iii）量化系统中的相对投入，例如确定不同猎物在消费者饮食中的比例。当仔细使用时，稳定同位素地球化学提供了一些优于常规方法的优点，并为生态学家提供了额外的手段。下面的文章提供了一个简短的参考生态学家考虑纳入稳定同位素分析的一部分，他们的方法。关键概念：稳定同位素是生态过程的有用示踪剂。碳稳定同位素可用于碳源示踪和植物生理学研究。动物组织中氮稳定同位素比值是反映营养水平的有用指标。动物组织中碳氮同位素比值的变化揭示了食物网和营养生态位。动物体内的氢氧同位素比值反映了当地降水的氢氧同位素比值。关键词：稳定同位素;生态学;食物网;饮食;迁移
Stable isotope geochemistry has proved to be an extremely useful tool in elucidating many ecological problems, with stable isotope ecology comprising the theme of a series of international conferences (http://www.isoecol.org). Stable isotopes can be used as biological tracers in the following ways: (i) to identify sources, for instance in determining the identity of basal carbon in a food web; (ii) to distinguish sources, for example to determine whether a breeding animal is using local resources or its own reserves; (iii) to quantify relative inputs in a system, for example determining the proportions of different prey items to a consumer's diet. When utilized carefully, stable isotope geochemistry provides some advantages over conventional methods, and provides an additional device for the ecologist. The following article provides a short reference for ecologists considering the inclusion of stable isotope analysis as part of their methodology. Key concepts: Stable isotopes are useful tracers of ecological processes. Carbon stable isotopes are useful for tracing carbon sources and plant physiology. Nitrogen stable isotope ratios in animal tissues are useful indicators of trophic level. Combined carbon and nitrogen isotope ratios in animal tissues elucidate food webs and trophic niche. Hydrogen and oxygen isotope ratios in animals reflect those of local precipitation. Keywords: stable isotopes; ecology; food webs; diet; migration