Wales is home to some of the last remaining examples of temperate rainforests in Europe.
A rainforest is defined as any woodland that thrives in conditions where there is over 200cm of precipitation a year.
In Wales, there are four main areas of rainforest: Eryri, also known as Snowdonia, in Gwynedd; Cwm Einion, in Ceredigion; Cwm Doethie-Mynydd Mallaen, in Ceredigion and Carmarthenshire; and the Elan Valley. "From a low of less than 5% at the turn of the 20th Century, slowly we're clawing it back towards 10%," Mr Davies explained.
As well as retaining moisture for tree roots, these low-lying species act as an early warning system when the health of the forest is threatened by invasion, drought or air pollution.
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