Exam 26: Population Growth, Resource Use, and Sustainability

The harvesting of a natural resource based on sustainable yield applies to

________ agriculture refers to maintaining agriculture production indefinitely while minimizing environmental impacts.

Different agricultural methods represent a trade-off between sustainability and ________.

The silvicultural technique in which mature single trees or groups of trees scattered through the forest are removed is referred to as

Marine life that is caught, but is unwanted and discarded, is referred to as

Industrialized agriculture depends on crop rotation to naturally maintain concentrations of plant nutrients in the soils and to sustainably maintain productivity.

The technique of discounting often runs counter to the objectives of sustainable resource management.

Industrialized agriculture uses pesticides to control pest species and increase productivity.

The three annual grasses that make up 80% of our cereal grains are ________, ________ and ________.

Soil temperature increases when trees are removed from a forest.

Ecosystem ________ are the processes by which the environment produces resources (natural capital)such as clean air, water, timber, or fish.

Describe two different forest harvest practices, and explain the pros and cons of each.

In recent decades, the per capita land area under agricultural production has declined.

Although industrialized agriculture produces small quantities of crops, it takes very little energy input to do so.

The maximum sustainable yield of a fishery occurs at a population level that is at the carrying capacity.

Discuss the theorized relationship among maximum sustainable yield, carrying capacity, and rate of population growth of a harvested species.

Outline the four critical components identified in variable retention harvesting practised on coastal BC forests. Briefly state why they are critical.

A community that consists of a mixture of crop species is called a(n)________.

Discuss the relationship between externalities and the market prices of a natural resource.

The practise of leaving ecologically significant components of a forest (such as snags and woody debris)after it has been harvested is known as