Information about the title group: Thematic volume on ecology. In addition to fundamental content in ecology, this volume addresses current topics such as the ecological footprint and provides an overview of the interconnected subfields. Topics include abiotic and biotic factors, the structure and characteristics of ecosystems, and the role of humans in their environment. Information about the series: The concept of the biosphere serves as both a textbook and a workbook. Following the 3+1 concept, the topics covered are structured as self-contained units. The layout is easy for students to follow: three pages of information are followed by a page with material-based tasks or experiments. Selected examples accompany the content of the textbook pages in the spirit of exemplary learning. The introductions are oriented towards the students' life worlds. Regarding the structure: The textbook is systematically organized by subject.