There is an island just off the coast called Anacapa Island where Western Gulls breed and raise their young.
Anacapa is about 0.5 km wide and 4.6 km long.
15,000 gulls live and breed on Anacapa each year.
Each year, 3500 chicks are born, and 2300 gulls die.
Each year, 125 birds immigrate to, and 140 birds emigrate from the island.
What is the density of birds on the island? (Hint: First find the area by multiplying length X width)
What is the birth rate of birds on the island?
What is the death rate of birds on the island?
What is the crude growth rate of the birds on the island?
What is the total annual growth rate of birds on the island (including migration)?
What Is the doubling time of the population (use r from #5)
Do you think the gull population will double? Identify 3 limiting factors that might contribute to a carrying capacity for Anacapa Island.
