Exploring Invasive Species in Aquatic Ecosystems

Jonathan Bird explores the impact of invasive species on ecosystems, focusing on Zebra Mussels in the Great Lakes, Round Gobies in the St. Lawrence River, and Lionfish in the Caribbean. These species disrupt local ecosystems, often causing significant ecological and economic consequences. The video highlights the challenges of controlling invasive species and emphasizes prevention as the best solution.

What is an ecosystem?

• A single organism living in isolation

• A community of organisms living together in balance

• A group of non-living elements

• A type of invasive species

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What is an invasive species?

• A species that only lives in freshwater

• A species that is endangered

• An organism introduced to a new ecosystem, often causing imbalance

• A native species that thrives in its environment

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How were Zebra Mussels introduced to North America?

• Through the air

• By migrating naturally

• In the ballast water of ships

• By being carried by birds

What is one major problem caused by Zebra Mussels?

• They are a food source for native fish

• They clog water intakes and damage infrastructure

• They help in the growth of aquatic plants

• They improve water quality

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What do Round Gobies primarily feed on?

• Small mammals

• Zebra Mussels

• Plankton

• Algae

How have Round Gobies affected native fish species?

• By reducing water pollution

• By cleaning their habitats

• By out-competing them for resources

• By providing more food for them

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Where is the Lionfish originally from?

• The Atlantic Ocean

• The Great Lakes

• The Indo-Pacific

• The Caribbean

Why is the Lionfish population difficult to control?

• They only live in deep waters

• They reproduce slowly

• They have no natural predators in the Caribbean

• They are too small to catch

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What is one method being used to control the Lionfish population?

• Relocating them to other areas

• Poisoning the water

• Introducing new predators

• Using spearguns to catch them

What is the best solution to deal with invasive species according to the video?

• Prevention of their introduction

• Eradication after they have spread

• Relocating them to their native habitats

• Ignoring them

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