The book "Elements of the theory of the functioning of aquatic ecosystems" is a fascinating and in-depth study created by a team of authors, which opens the veil of the mysterious world of aquatic ecosystems to readers. This work will become a real guide for all those interested in ecology, biology and natural sciences, as well as for students, researchers and professionals in these fields. Water is life, and it is in aquatic ecosystems that many unique processes are concentrated that maintain balance on our planet. The book invites readers to immerse themselves in the study of these processes, analyzing how various factors, such as climate, geography and human activity, affect the functioning of water systems. The authors consider not only the biological aspects, but also the physical and chemical characteristics of water bodies, which makes the book multifaceted and informative. Readers interested in the ecosystems of rivers, lakes and seas will find in this book a lot of useful knowledge. It will be of particular interest to undergraduate and graduate students studying ecology and biology, as well as environmental practitioners and conservationists. The book can also attract the attention of nature lovers and anyone who wants a deeper understanding of how water resources function and what threats threaten them in the modern world. The topics raised in the book cover a wide range of issues, including water biodiversity, the impact of pollution on ecosystems, and methods for monitoring and assessing the state of water resources. The authors emphasize the importance of preserving aquatic ecosystems for sustainable development and global health, making their work particularly relevant in the face of global climate change and growing human pressure. The style in which the book is written is distinguished by scientific rigor and accessibility. The authors use clear language, which allows even non-professionals to understand complex concepts and terms. The book is rich in illustrations, graphs and tables, which makes it visually attractive and helps to better absorb the material. The team of authors includes both experienced scientists and young researchers, which gives the work freshness and diversity of views on the issues under consideration. If you are looking for literature that will help you better understand how aquatic ecosystems function and what measures need to be taken to protect them, Elements of a Theory of the Functioning of Aquatic Ecosystems will be an indispensable source of knowledge for you. This book will not only expand your horizons, but also inspire further research and action in the field of environmental protection. In conclusion, “Elements of the Theory of the Functioning of Aquatic Ecosystems” is not just a textbook, but a real find for anyone who wants to understand more deeply the complex interactions in nature. It will be an important contribution to the library of anyone interested in ecology, biology and sustainable development. Do not miss the opportunity to discover the amazing world of aquatic ecosystems and learn how we can help preserve them for future generations.