Flagship species are crucial for the conservation of a particular ecosystem or habitat. These species represent the overall health of a larger ecosystem and can help inspire conservation efforts. Some potential synonyms for flagship species include keystone species, representative species, and iconic species. Keystone species are those that have a unique role in the ecosystem, and their loss would have a significant impact. A representative species is one that is a good example of the ecosystem's diversity and complexity. Finally, an iconic species is recognizable and beloved, making it a useful tool for rallying support for conservation efforts. All of these terms emphasize the importance of using key species as a means to protect entire ecosystems.