Scales of environmental impacts in Antarctica

Environmental impacts in Antarctica occur at a range of spatial scales.

At the largest scale are the effects in Antarctica of planet-wide impacts such as global warming, ozone depletion and global contamination caused by the application of technology elsewhere in the world.
More localised, but still with the potential to cause region-wide effects, are the impacts of fishing and hunting. Mining has been prohibited under the Environmental Protocol to the Antarctic Treaty (known as the Madrid Protocol).
More localised still are the impacts of visitors, such as scientists or tourists, to the region.