Old Growth Forests and Ecosystem Services

The video discusses old growth forests, highlighting their structure, function, and composition. It explains their ecological importance, including biodiversity support and carbon storage. The video also covers the distribution of old growth forests in the U.S. and emphasizes the need for their conservation.

What is a defining feature of an old growth forest?

• It has been recently planted.

• It has experienced catastrophic disturbances.

• It has developed over a long period without major disturbances.

• It consists only of young trees.

Which of the following is NOT a component of old growth forest structure?

• Only young trees

• Snags

• Tree debris

• Fallen logs

What role do old growth forests play in an ecosystem?

• They are only habitats for birds.

• They do not support any plant life.

• They facilitate biochemical and biogeochemical cycles.

• They are primarily used for timber production.

What is a characteristic of the composition of old growth forests?

• They have a variety of plant species including large trees and shrubs.

• They are dominated by a single plant species.

• They lack any plant life on the forest floor.

• They consist only of grasses.

How do old growth forests contribute to biodiversity?

• They only support plant life.

• They increase species diversity by supporting both plant and animal life.

• They reduce the number of species.

• They are not important for biodiversity.

What is one of the ecosystem services provided by old growth forests?

• They do not provide any ecosystem services.

• They decrease air quality.

• They filter water supplies.

• They increase soil erosion.

Which state has the largest area of old growth forest in the United States?

• California

• Alaska

• Texas

• Florida

What is a significant threat to old growth forests in the United States?

• Lack of sunlight

• Excessive rainfall

• Destructive human activities

• Overpopulation of wildlife

Why are old growth forests considered important carbon sinks?

• They release carbon dioxide into the atmosphere.

• They only store carbon for a short period.

• They store more carbon dioxide than young forests.

• They do not interact with carbon dioxide.

What is a key reason for protecting old growth forests?

• They are only important for timber production.

• They play a critical role in reducing atmospheric carbon dioxide.

• They have no impact on climate change.

• They are not important for the environment.