The increasing pressure to exploit intact ecosystems undermine the important and valuable services they provide for people. Ecosystems that are healthy underpin and often support the social-ecological systems that are vulnerable to locally and globally relevant challenges. It is important to sustainably manage and maintain healthy and intact ecosystems and work towards restoring degraded ecosystems. The economic, social, and ecological value of intact ecosystems contributes to protecting biodiversity, reducing environmental degradation, mitigating pollution and climate change. The ecological infrastructure associated with intact ecosystems provide value-added ecosystem services. The Healthy Ecosystem thematic area is transdisciplinary, working with landowners, communities, businesses, researchers, and government agencies across various sectors providing evidence and tools towards sustainable management. We believe that intact ecosystems build resilience, contribute to poverty reduction and facilitate sustainable green growth. We work across a few strategic focal areas including, Freshwater, Citizen Sciences, Biodiversity and Environmental Information Systems.