Abstract

Extensive geological and hydrobiogeochemical studies were conducted for the first time in two Sikhote-Alin (Primorskii krai) areas, where geophagy among wild ungulates has been massively manifested. The mineral and chemical compositions of rocks, the chemical composition of surface and spring waters and vegetation, and biological tissues of red deer (Cervus elaphus), harvested in the study areas, have been studied. It was concluded that geophagy of animals develops in the landscapes on volcanogenic rocks with high concentrations of mobile forms of rare earth elements. The consumption of vegetation with high concentrations of such elements can cause metabolic disorders in the body, accompanied by a stress response. Considering the published data on geophagy among animals in Africa, it is suggested that the main reason for the consumption of clay rocks is to regulate the concentration and ratio of rare-earth elements in the body by means of mineral sorbents, which may also be enriched in animal-available forms of sodium.

中文翻译：

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稀土元素作为食草动物食土的原因

摘要

首次在两个 Sikhote-Alin (Primorskii krai) 地区进行了广泛的地质和水生地球化学研究，在这些地区，野生有蹄类动物的食土行为已大量表现出来。岩石的矿物和化学成分，地表和泉水和植被的化学成分，以及马鹿（Cervus elaphus）的生物组织)，在研究区收获，已被研究。得出的结论是，在具有高浓度稀土元素移动形式的火山岩上的景观中发展了动物的食土作用。食用含有高浓度此类元素的植物会导致体内代谢紊乱，并伴有应激反应。考虑到已发表的非洲动物食土数据，认为消耗粘土岩的主要原因是通过矿物吸附剂调节体内稀土元素的浓度和比例，也可能富集稀土元素。以动物可利用的钠形式存在。