The book “Ecology of Populations and Communities: Methodical Guidelines for Conducting Practical Lessons” under the authorship of Vladimir Vasilyevich Petryakov is an indispensable resource for students, graduate students and anyone interested in ecology and biology . In this edition, the author shares his knowledge and experience, offering readers not only theoretical foundations, but also practical recommendations for conducting classes, which makes it an ideal textbook for the educational process. Vladimir Petryakov is a well-known Russian ecologist, whose work covers a wide range of topics related to the study of ecosystems, population dynamics and the interaction of species. His approach to ecology is based on a deep understanding of the interrelationships in nature and the importance of biodiversity conservation. In this book, he offers readers a unique opportunity to immerse themselves in the world of ecology, using methodological guidelines that will help not only to master the theory, but also to apply it in practice. The book covers key aspects of the ecology of populations and communities, ranging from the basics of population biology to complex interactions between species in ecosystems. Petryakov focuses on the importance of field research and practical exercises that allow students and researchers not only to understand, but also to see how ecosystems function in real life. This makes the book especially valuable for those who want not only to study, but also to actively participate in scientific research. "Ecology of populations and communities" will be interesting not only for students of biological and environmental specialties, but also for teachers who are looking for high-quality teaching materials for their classes. The book is also suitable for anyone interested in environmental protection, sustainable development and conservation issues. Readers who are passionate about studying ecosystems will be able to find in it many useful tips and recommendations for conducting their own research. Topics raised in the book cover critical environmental issues, such as the impact of anthropogenic activities on populations and communities, methods for monitoring and assessing the state of ecosystems, and biodiversity conservation strategies. Petryakov emphasizes that understanding these processes is critical for developing effective measures for nature conservation and sustainable management of natural resources. His work will become a reference book for all who seek to contribute to the protection of the environment. Petryakov's style is distinguished by clarity and accessibility, which makes complex scientific concepts understandable even for those who are just starting their way into ecology. It skillfully combines scientific data with practical examples, which allows readers not only to assimilate information, but also to apply it in practice. This quality makes his books in demand among a wide audience, including both professionals and amateurs. If you are looking for literature on ecology that combines theory and practice, “Ecology of Populations and Communities” will be an excellent choice. It will not only expand your knowledge in the field of ecology, but also inspire active action in the conservation of nature. Petryakov’s book is not just a textbook, it is a real guide to the world of ecology, which will help you better understand how life functions on our planet and how we can preserve it for future generations.