Humans first migrated here after the last ice age. The rivers and lakes make good
transportation during that time. It makes fur trade more efficient. In 1996, there were
approximately 3 million people in population. Today, this ecozone is still relatively unpopulated
except where there are large economic activities such as near the Great Lakes (Natural
Resources Canada- Boreal Shield).
Mining, forestry, hydro electricity, and fishery are the major industries in the Boreal
Shield. Although, the primary industries in the Boreal Shield are mining and forestry. Most mines
in the Boreal Shield are located in Manitoba, and Northern Ontario, as well as a few in Quebec
Many freshwater lakes and rivers are untouched, but there are some that have been
exploited. The main cause of this is from industrial development. Mercury contamination and
acidification from logging causes some lakes and rivers to be polluted. Because of this, many
animals are killed, and many habitats are destroyed. These practices may reduce the diversity of
both plant and animal species in the long term, and increase the forest’s vulnerability to disease.