(ABCNews) - A study has concluded many McLaren Vale wine producers are leading the world in preparing for future climate change. It compared the region on Adelaide's southern outskirts with a French wine region, Roussillon, because of their climatic similarities. Co-author and Adelaide University lecturer Douglas Bardsley said the average rainfall of both regions was expected to decline in the future, but average temperatures would climb. He said McLaren Vale growers and winemakers were taking important steps to ensure they remained viable. "They're trying new varieties, varieties from Spain for example which might be more adapted to a future drying climate," he said.