A basic building block
Nitrogen is a basic building block for all life on Earth. In the Arctic, where nitrogen is not abundant, Nostoc commune collects and regulates nitrogen that other Arctic plants use to grow. Without blue-green algae like Nostoc commune there would be limited plant growth in the Arctic region.
Nostoc commune is an edible algae that can be eaten for its nutrient content for survival purposes.
Nostoc commune has the ability to utilize nitrogen. Plants and humans have used this species of algae for thousands of years to create fertilizers.