Accumulation and Localization of Metals in Lichen Thallus Under Conditions of Dust Pollution During Open Mining of Boxite Deposits

IF 1 4区环境科学与生态学 Q4 ECOLOGY

Russian Journal of Ecology Pub Date : 2024-04-09 DOI:10.1134/s1067413624010090

I. G. Zakhozhiy, M. A. Shelyakin

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Abstract

We studied the accumulation and localization of metals in the foliose lichens Lobaria pulmonaria, Hypogymnia physodes, and Peltigera aphthosa, living in the impact zone of the Sredne-Timansky bauxite mine. A significant accumulation of Al (16–19 g/kg), Fe (16–20 g/kg), and Ti (0.3–0.7 g/kg) by thalli was revealed. From 29 to 82% of the total content of these metals is localized in dust particles weakly attached to the surface of the thalli. The total proportion of intra- and extracellularly bound Al, Fe, and Ti did not exceed 11%, 15–56% of these metals were found in the residual fraction. An increase in the content of Cu, Pb, Co, and Ni was detected in thalli collected in the impact area. It has been shown that the localization of metals in thalli depends both on the studied element and on the morphological and anatomical characteristics of the thalli: in L. pulmonaria, fine mineral particles were localized on the surface of the thalli; in the thalli of P. aphthosa, which do not have a lower cortex, mineral inclusions were found throughout the entire thickness of the thalli.

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露天开采黄箱石矿床过程中粉尘污染条件下金属在苔藓中的积累和定位

摘要我们研究了生活在 Sredne-Timansky 铝土矿影响区的叶状地衣 Lobaria pulmonaria、Hypogymnia physodes 和 Peltigera aphthosa 中金属的积累和定位。结果表明，藻体中大量积累了铝（16-19 克/千克）、铁（16-20 克/千克）和钛（0.3-0.7 克/千克）。这些金属总含量的 29% 至 82% 存在于微弱地附着在毛鳞茎表面的灰尘颗粒中。细胞内和细胞外结合的铝、铁和钛的总比例不超过 11%，这些金属的 15% 至 56% 存在于残留物中。在撞击区采集的苔藓中，发现铜、铅、钴和镍的含量有所增加。研究表明，金属在毛鳞茎中的定位取决于所研究的元素以及毛鳞茎的形态和解剖特征：在 L. pulmonaria 中，细小的矿物颗粒位于毛鳞茎的表面；在 P. aphthosa 的毛鳞茎中，由于没有下部皮层，矿物包裹体遍布毛鳞茎的整个厚度。

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来源期刊

Russian Journal of Ecology 环境科学-生态学

CiteScore

1.50

自引率

18.20%

发文量

审稿时长

6 months

期刊介绍： The Russian Journal of Ecology publishes completed original studies in all branches of theoretical and experimental ecology, reviews, articles on topics currently in debate, and information on new methods of research.