The Bioindication . Microbiological methods of ecosystem research” by Kondakov G. In. This is a fascinating and deep dive into the world of microbiology and ecology, which will become a reference book for students, researchers and anyone interested in the state of the environment. Published by P. Yaroslavl State University G. Demidova, offers readers a unique look at the methods of studying ecosystems using microbiological approaches, which makes it relevant and in demand in the modern scientific community. The book focuses on the concept of bioindexation a method that allows you to assess the state of ecosystems based on the analysis of microbial communities. Author, G. In. Kondakov, masterfully explains how microbes, being invisible to the eye, can tell about the health of the ecosystem, its resistance and its ability to self-healing. Readers will learn how microbiological techniques help identify pollution, changes in habitat, and even predict environmental disasters. This is not just a scientific work, but a practical guide for those who want to understand how small organisms affect large ecosystems. The book will be of interest not only to undergraduate and graduate students studying biology and ecology, but also to practicing ecologists, biologists and anyone who seeks a deeper understanding of the interaction between living organisms and the environment. Given growing environmental concerns such as climate change and pollution, Kondakov's work is becoming particularly relevant. It offers readers tools for analyzing and assessing the state of ecosystems, which can be useful in a variety of fields, from scientific research to practical applications in environmental protection. The topics raised in the book cover a wide range of issues, including microbial interactions with other organisms, their role in biogeochemical cycles, and the impact of anthropogenic activity on microbial communities. Kondakov not only shares theoretical knowledge, but also offers practical examples, which makes the material accessible and understandable. Readers will be able to see how microbiology can be the key to solving many of the environmental problems our society faces. The author's style is distinguished by clarity and accessibility, which allows even complex scientific concepts to be presented in an understandable and fascinating form. Kondakov actively uses examples from his practice and research, which adds liveness to the book and makes it more interactive. This is not just a collection of theoretical knowledge, but a real work that inspires further research and experiments. If you are looking for literature that combines scientific rigor and practical applicability, "Bioindication. Microbiological methods of ecosystem research" will be an excellent choice. This book will not only expand your knowledge of microbiology and ecology, but will also inspire new ideas and projects in the field of environmental protection. Do not miss the opportunity to learn how small organisms can change our perception of the world and help solve global environmental problems.