Data compiled by Nature's Calendar shows that native trees in Britain are producing ripe fruit 18 days earlier than they were a decade ago. BBC News says, acorns are ripening 13 days earlier than in at the turn of the 21st century, while rowan berries are ripening a full month earlier than normal.
Professor Tim Sparks, an advisor for Nature's Calendar from Coventry University, comments on the implications of the earlier ripening of fruit:
Anything that changes our of synchronicity is likely to cause disruption. What the actual consequences will be is slightly harder to work out. In this particular case, if all this fruit is ripe earlier, and if all the mammals and birds are eating it earlier, what are they going to be feeding on during the rest of the winter?Prof Sparks went on the say that though the exact reason for the earlier ripening is not determined, "There is a very strong correlation between these ripening dates and April temperatures, and that might be result of flowering dates. It might just be that warmer springs result in earlier flowering dates, and subsequently result in earlier ripening."