Tracking Missing Rivers and Fish Populations

The video explores how researchers use fish to track ancient river paths in New Zealand. Fish from the genus Galaxis, found in Otago and Southland, indicate a historical river connection. The rise of mountains divided the river, leading to potential allopatric speciation. Researchers trace the old river's path under farmland southwest of the Matura River.

What method did researchers use to track missing rivers in New Zealand?

• Historical maps

• Satellite imagery

• Soil analysis

• Living fish populations

What geographical feature caused the separation of the fish populations in Otago and Southland?

• A forest

• A large lake

• A desert

• Rising mountains

What is the process called when species evolve due to geographical separation?

• Parapatric speciation

• Peripatric speciation

• Allopatric speciation

• Sympatric speciation

How do researchers trace the path of the ancient river?

• By analyzing soil samples

• By studying the current fish populations

• By using satellite data

• By examining tree rings

Where is the old river's most likely path located?

• Under a city

• Under a desert

• Under farmland southwest of the Matura River

• Under a forest