In Gardening Australia's final special for 2013, we visit some of the country's most spectacular, yet threatened landscapes, and look at the work being done to ensure their future. Reading the Signs: Jerry meets ecologist Professor David Lindenmayer to find out how the way we use land for food production affects biodiversity and natural ecosystems. Turning the Tide: Costa is on Montague Island off the south coast of NSW to see one of the biggest issues facing our native plants and animals - introduced weeds. Repairing the Land: Jane is in northwest Victoria to find out about the state's largest private conservation property, Neds Corner, and meets the current managers working to repair it. Linking the Landscape: Josh is in southwest WA exploring a large-scale revegetation project that aims to secure the future of the region's significant plants and animals. The Bottom Line: Jerry visits a farmer who is increasing productivity by managing his land for biodiversity and ultimately, profitability.