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Applications of stable isotopes to study plant-animal relationships in terrestrial ecosystems

机译：稳定同位素在研究陆地生态系统中植物与动物的关系中的应用

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摘要

As natural tracers, stable isotopes have been extensively used in plant physiological, ecological and environmental research. Recently, animal physiological ecologists have also applied stable isotope techniques to study plant-animal relationships. The isotopic compositions of animal body generally reflect and integrate their diets over a time period ranging from hours to years to the lifetime of an individual. When animal living habitat changes or animals move to a new environment, the animal isotopic compositions will shift accordingly. This, stable isotope signatures of an animal can truly reflect its food sources, habitat, distribution and movement patterns during a given time period. Moreover, by analyzing animal-tissue isotopic compositions at different temporal scales, we can improve our understanding of animal adaptation to environmental changes. Stable isotope technique also provides an ideal tool to study animal foodweb relationship and community structure because of isotopic fractionation during the processes of nutrient assimilation by animals. Stable isotope technique can continuously measure animal trophic position in a foodweb, which can eventually reveal the predator-prey relationship and its role in determining matter balance and energy flow in the entire ecosystem. Stable isotope technique has been one of the most important and efficient tools in studying plant-animal relationship. In this paper, we first review recent advances in the application of stable isotope techniques to plant-animal relationship research then evaluate their advantages and disadvantages, and finally discuss some future directions associated with stable isotope applications to plant-animal relationship research.
机译：作为天然示踪剂，稳定同位素已广泛用于植物生理，生态和环境研究。最近，动物生理生态学家还应用稳定同位素技术来研究植物与动物的关系。动物体内的同位素组成通常会反映并整合其饮食，时间范围从数小时到数年不等，直至一个人的寿命。当动物的栖息地发生变化或动物迁移到新的环境时，动物的同位素组成将相应地发生变化。动物的这种稳定同位素特征可以真实地反映给定时间段内的食物来源，栖息地，分布和运动方式。此外，通过分析不同时间尺度上的动物组织同位素组成，我们可以增进对动物对环境变化适应的理解。稳定的同位素技术还为研究动物食物网的关系和群落结构提供了理想的工具，因为动物在营养吸收过程中存在同位素分馏。稳定同位素技术可以连续测量食物网中动物的营养位置，最终可以揭示食肉动物与猎物之间的关系及其在确定整个生态系统中物质平衡和能量流中的作用。稳定同位素技术一直是研究植物-动物关系的最重要和最有效的工具之一。在本文中，我们首先回顾稳定同位素技术在植物-动物关系研究中的最新应用，然后评估其优缺点，最后讨论与稳定同位素技术在植物-动物关系研究中相关的一些未来方向。

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