The influence of human activities is visible everywhere in the Cairngorms National Park. For example, much of the moorland was once forest and in most places the natural upper margins of forest have been removed by animal grazing, fire and other human interference.
Recreational activities, such as walking, skiing and biking, also have varied and widespread influence on the habitats, plants and animals of the Cairngorms National Park.
Other examples of human activities with intentional or unintentional impacts include:
- shooting of certain species for sport or pest control;
- deer fencing;
- illegal egg collecting;
- illegal plant collecting;
- disturbance of ground nesting or lekking birds;
- habitat destruction.