A team is studying a local migratory bird species in a habitat conservation area

Question

A team is studying a local migratory bird species in a habitat conservation area and have recorded the following lambda values: Year 1, lambda = 1.3 Year 5, lambda = 1.3 Year 10, lambda = .95 Year 15, lambda = .8 Year 20, lambda = .75 Which of the following statements about this population is FALSE?

A. This population is beginning to recover due to the establishment of the habitat conservation area. B. This population began experiencing smaller population sizes every year, starting in year 10. C. This population is experiencing an increase in death rates, a decrease in birth rates or both. D. This population is declining and may go extinct. E. This population is likely experiencing habitat loss somewhere on its migratory route.

Explanation / Answer

Option A is false

As it is clear from the lanmbda values given, the population was growing the first and fifth year has been steadly decreasing from 10 years and has shown a steady decrase of 0.8 between year 5 and year 10 and a steady decrease of 0.5 every 5 years since and the reasons for that could be any of the other options B, C, D, and E

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