Here is an example of a situation where removing a tree is beneficial. In the picture below you can see two Oaks growing side by side. One is a deciduous English oak (Quercus robur), the other smaller tree is an evergreen holm oak (Quercus ilex). The English oak is somewhere around 350yrs old and is of great ecological significance to the estate here. The holm oak is about 30yrs old and offers little habitat value. The evergreen and fast growing nature of the holm oak means it is threatening to overshadow the lower crown which can be seen developing on the English oak. This old English oak will be relying on developing a healthy lower crown to continue living for the next few hundred years as it starts to ‘grow down’ and become a shorter squat tree. The evergreen holm oak will soon double in height and spread, dominating this area.
Here is a second picture taken after we removed the holm oak. Not only has the English oak now got room to spread out its branches, but the maples behind will also benefit. The next point is subjective, but I also prefer the open feeling created from retaining deciduous trees when there is little light in winter and early spring months, and the view of the colourful maples behind. What do you think?