Arctic Ecosystem and Human Impact

The video discusses the migration of species towards the Arctic due to warming temperatures, focusing on the polar cod and the changing Arctic food web. The process of Atlantification is altering the ecosystem, with new species like Atlantic cod and capelin competing with native species. Human activities, such as resource extraction and tourism, are further stressing the Arctic environment. The video highlights the complex interactions between climate change, species migration, and human influence in the Arctic.

What is causing many species to migrate northward?

• Warming temperatures

• Decreasing sea levels

• Increased food availability

• Decreasing temperatures

Which fish is considered the most important in the Arctic ecosystem?

• Salmon

• Polar cod

• Capelin

• Atlantic cod

What adaptation helps polar cod survive in the Arctic?

• Storing lots of fat

• Hibernating during winter

• Migrating south

• Changing color

What is the term used to describe the northward movement of Atlantic waters?

• Tropicalization

• Polarization

• Atlantification

• Arcticification

How do Atlantic copepods differ from Arctic copepods?

• They are more colorful

• They store less fat

• They are larger in size

• They store more fat

What is a direct threat to polar cod from Atlantic cod?

• Eating polar cod

• Competing for food

• Introducing diseases

• Destroying habitats

Why might Atlantic cod be considered a 'climate refugee'?

• They are looking for new breeding grounds

• They are fleeing overfishing and rising temperatures

• They are seeking warmer waters

• They are escaping predators

What human activity is expanding northward in the Arctic?

• Fishing

• Agriculture

• Mining

• Tourism

What is a potential consequence of increased human activity in the Arctic?

• Decreased biodiversity

• Increased ice formation

• Stabilized temperatures

• Reduced shipping routes

How long have humans been coming to the Arctic region?

• 60,000 years

• 45,000 years

• 20,000 years

• 10,000 years