It appears the greatest density of Golden Eagles anywhere in the world occurs in the Western United States and Western Canada.

The species's highest density occurs in Podocarpus forests in the Maricao State Forest.

High densities of seeds occur in the upper soil of Ceanothus communities.

These counts covered about 60 square kilometres in which distribution was more uniform than on the coast, but higher densities do occur in favoured spots.

Again, much higher densities may occur on the chalk, and 14 pairs were found nesting in a three-acre patch of kale at Burpham in 1969, an extraordinary concentration.

The highest densities occur in lush or moist grassland such as the Okavango Delta.

The descriptive term nuclear density is also applied to situations where similarly high densities occur, such as within neutron stars.

Lower densities occur further east, with peak densities of 27 pairs per square kilometre in central Siberia.

However, pygmy salamanders populations can be found at lower elevations from 950 to 1400 meters, but the highest densities occur at the higher elevations.

Control is focused on hand pulling Verbesina in sensitive areas where wetlands and high densities of native plants occur, and spraying appropriate herbicides.