昆虫力量3

Kate Bellingham joined museum entomologist Max Barclay.

He has a record of 200,000 insects collected

on Bookham Common over the last 120 years.

Bookham Common provides an almost complete picture

of how life responds to everything from extinction to climate change.

Although this common has been studied in great detail

there's one place Max has never been able to look

the treetop canopy.

Nobody has really looked at

what's in the canopy of oak forests in southern England

and our experiments in the tropics have shown

that an enormous amount of biodiversity lives in the canopy of the tree.

Even though it's only one species

this is just a single oak tree.

Oak is one of the richest and most diverse trees in terms of number of species

and there're hundreds of species of insect associated entirely with oak trees.