Increase light and reduce wind resistance by selective removal of branches throughout the canopy of the tree.
This is a common practice which improves the tree’s strength against adverse weather conditions as the wind can pass through the tree resulting in less “load” being placed on the tree.
Removal of Deadwood
Branches die off for a number of reasons ranging from light deficiency, pests and disease damage to dmage to the root system.
A dead branch will at some point decay back to the parent stem and fall off. This is normally a slow process but can be shortened by high winds and extremities of temperature. Therefore the main reason deadwooding is carried out is safety.
The situations that usually demand such removal would normally be trees that overhang houses, public areas and gardens.
Another reason for the removal of deadwood is amenity value, i.e. a tree with a large amount of dead throughout the crown looks more aesthetically pleasing with the deadwood removed.