Question

A population of arctic birds has migrated farther north than previous years. The new location is...

A population of arctic birds has migrated farther north than previous years. The new location is good for the birds, and the population exhibits exponential growth. As time passes, the population begins to level out and maintain a steady population size. (10 points)

  1. Suppose that researchers say ? > 1. What does this mean? (1 point)
  2. In the first year, there are 200 births from an original population size of 2000. There are also 100 deaths, 10 emmigrants, and 20 immigrants. What is the value of r? (3 points)
  3. Given the r you calculated in part B, estimate the value of ?. (2 points)If you did not successfully find an r in part B, you can use the value 0.123 as your r and still get full credit for part C if you calculate ? correctly.
  4. Estimate the population size after 3 years using the initial population size of 2000 and the values calculated above in parts B and C. (2 points).  If you did not successfully find an r in part B, you can use the value 0.123 as your r and still get full credit for part D if you calculate population size correctly.
  5. Give an example of a density-independent population size regulator for these birds. (2 points)

Homework Answers

Answer #1

At the constant birth rate in Population through time and is never be limited by food or disease is known as Exponential Groth.The formula for Exponential Growth=dNdt=rNdNdt=rN where dNdt is the rate of change in  population size r is the biotic potentialand N is the population size.

if lambda>1 means there is an increase in population.

Value of r can be calculated by the equation

r= Birth-Death/ Actual population

here it is birth=200

death=100

Actual population=2000 so r= 200-100/2000

=.05

ie r is positive and greater than 0 .it means that population is increasing.

Density -independent population size regulator for these birds are weather and cimate,exert their influences on population size regardless of  the population's density.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Texas is home to more than one million undocumented immigrants, and most of them are stuck...
Texas is home to more than one million undocumented immigrants, and most of them are stuck in low-paying jobs. Meanwhile, the state also suffers from a lack of skilled workers. The Texas Workforce Commission estimates that 133,000 jobs are currently unfilled, many because employers cannot find qualified applicants (The Boston Globe, September 29, 2011). Texas was the first state to pass a law that allows children of undocumented immigrants to pay in-state college tuition rates if they have lived in...
Sunshine Enterprises Case Study “I think the waiter wrote in an extra $25 tip on my...
Sunshine Enterprises Case Study “I think the waiter wrote in an extra $25 tip on my Sunshine Café bill after I received and signed my credit card receipt,” Mr. Mark Otter said to the restaurant manager, Brad Gladiolus. “Mr. Otter, mail me a copy of the restaurant receipt and I’ll investigate,” responded Mr. Gladiolus. “I don’t have the receipt—I lost it—but I have my monthly credit card statement,” replied Mr. Otter. Mr. Gladiolus hesitated, then said, “Mr. Otter, I don’t...
What tools could AA leaders have used to increase their awareness of internal and external issues?...
What tools could AA leaders have used to increase their awareness of internal and external issues? ???ALASKA AIRLINES: NAVIGATING CHANGE In the autumn of 2007, Alaska Airlines executives adjourned at the end of a long and stressful day in the midst of a multi-day strategic planning session. Most headed outside to relax, unwind and enjoy a bonfire on the shore of Semiahmoo Spit, outside the meeting venue in Blaine, a seaport town in northwest Washington state. Meanwhile, several members of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT