Handbook of Essential Biodiversity Notes is designed as a foundational guide to the study of biodiversity, offering a streamlined and comprehensive overview of key concepts. It begins with an introduction to the basic definitions and scope of biodiversity, covering its three major levels genetic, species, and ecosystem diversity. The book explores the evolutionary processes that drive the diversity of life, including speciation and adaptation, as well as the critical role biodiversity plays in maintaining ecosystem services and resilience. Readers will find sections dedicated to the major...