(NZHerald) - Scientists have found that wild yeasts vary from region to region, and can have a unique influence if used in the wine-making process.Climate, soil and geography have long been recognised playing an important role in shaping the character of a region's wines and whose interplay is at the heart of the French concept of terroir. However, a breakthrough by New Zealand scientists now suggests that an area's yeasts could play their part in regional differences as well, with the discovery that communities and strains of wine yeasts vary from region to region.