The primary purpose of biodiversity indices is to quantify and assess the health of ecosystems by measuring their biological diversity. These indices provide insights into the variety and abundance of species, helping identify areas of conservation concern. By evaluating factors such as species richness and evenness, these tools facilitate comparison between different habitats or regions, enabling better resource management. They are crucial for tracking changes over time, especially in response to threats like habitat destruction or climate change. Ultimately, biodiversity indices guide informed decision-making for conservation efforts.