Abstract

Bioindication, a method for the assessment of the quality of the natural environment with allowance for the state of the biota, is widely used to assess the impact of various factors on an ecosystem. Two problems remain relevant: on the one hand, the adequate selection of biological indicators of the ecosystem state with the greatest bioindicative potential, and, on the other, the establishment of the numerical boundaries of the norm for the indicators. A laboratory algocenosis has been created to study the bioindicational potential of hydrobiological and biophysical indicators. It consists of representatives of various classes of microalgae and cyanobacteria: Anabaena variabilis, Pleurochloris magna, Ankistrodesmus falcatus, and Stichococcus bacillaris. Salts of copper and zinc and diuron were used as effective toxicants. The method of local ecological norms was used for the analysis of the experimental data. The method is based on a computer analysis of the interrelated distribution of biological and physicochemical characteristics, i.e., on the search for boundaries of the factor and indicator norms for which suitable values of the indicator correspond to acceptable values of the factor and unacceptable values of the factor correspond to unsuitable indicator values. The paper analyzes data on 27 bioindicators: various fluorescence indicators, spectral characteristics; number and average volumes of cells of each type; parameters of the rank distribution of the number of species in the sample; evenness indices; nonparametric indices of species diversity; and the phytoplankton saprobity index. The boundaries of each indicator norm have been calculated; the most significant factors, as well as the boundaries of those factors' norm, have been revealed and determined. The bioindicators were compared by the average strength of connection with factors, the number of found significant factors, and their geometric mean value.

中文翻译：

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实验室藻类实验中浮游植物生物物理和水生物指标的生物指示潜力

摘要

生物指示是一种评估自然环境质量并考虑生物群状态的方法，被广泛用于评估各种因素对生态系统的影响。两个问题仍然适用：一方面，生态系统状况的生物学指标的充分选择具有最大bioindicative潜力，并且，另一方面，建立了指标规范的数值界限。已经建立了实验室算法，以研究水生生物和生物物理指标的生物指示潜力。它由各种微藻和蓝藻类的代表组成：鱼腥藻（Anabaena variabilis），白灵菇（Pleurochloris magna），拟南芥（Ankistrodesmus falcatus）和芽孢杆菌。铜，锌和杜隆的盐被用作有效的毒物。实验数据采用局部生态规范方法进行分析。该方法基于对生物学和物理化学特征相互关联的分布的计算机分析，即基于因子的边界和指标规范的搜索，对于这些指标，指标的合适值对应于因子的可接受值和指标的不可接受值因数对应于不合适的指标值。本文分析了27种生物指示剂的数据：各种荧光指示剂，光谱特征，每种类型的细胞数量和平均体积；样本中物种数量的等级分布参数；均匀度指标；物种多样性的非参数指标；和浮游植物的腐烂指数。每个指标规范的边界已计算；已经揭示并确定了最重要的因素以及这些因素规范的边界。通过与因子的平均连接强度，发现的重要因子的数量及其几何平均值对生物指标进行了比较。