sentences:  Human impacts can expand from minor to highly significant adverse effects.Minor effects include pedestrian trampling, constructing footpaths, and off-road vehicle tracks, to the highly more significant which includes the construction of roads, car parks, houses, and the use of sand dunes for ground water extraction, the conversion of sand dunes to land for farming, forestry, waste disposal and sand dune mining.New Zealand is a country with a very long coast line that consists of around 1090 km of sand dunes.