Weekly Flashcard: Channel Islands Week 1

Front

How many islands are there in the Channel Islands chain?

Back

There are 8 islands in the Channel Islands chain.

Front

What is the largest mammal that is native to the Channel Islands?

Back

The largest mammal native to the Channel Islands is the Fox.

Front

If 50 crabs were captured and marked, then released, and later 25 were caught with 5 marked, what is the estimated population?

Back

The estimated population is 250.

Front

Conservationists captured 12 mountain goats, tagged them, and released them. A week later, they captured 8 goats, 5 of which were tagged. What is the estimated population?

Back

The estimated population is 19.

Front

Name the largest Channel Island.

Back

The largest Channel Island is Santa Cruz.

Front

What is the significance of tagging animals in population studies?

Back

Tagging helps estimate population sizes and understand species distribution.

Front

What method is commonly used to estimate wildlife populations?

Back

The Lincoln-Petersen index is commonly used to estimate wildlife populations.

Front

What is the Lincoln-Petersen index formula?

Back

The formula is N = (M * C) / R, where N is the estimated population, M is the number of marked individuals, C is the total caught in the second sample, and R is the number of recaptured marked individuals.

Front

What is the primary habitat of the Channel Islands?

Back

The primary habitat includes coastal scrub, grasslands, and marine environments.

Front

What are some threats to wildlife in the Channel Islands?

Back

Threats include habitat loss, invasive species, and climate change.