Suppose the population of a particular endangered bird changes on a yearly basis as a discrete dynamic system. Suppose that initially there are 60 juvenile chicks and 30 [60 breeding adults, that is xo Suppose also that the yearly transition matrix is . 30] = [0 1.25] S 0.5' where s is the proportion of chicks that survive to become adults (note that 0 ≤ s ≤ 1 must be true because of what this number represents). (a) Which entry in the transition matrix gives the annual birthrate of chicks per adult? (b) Scientists are concerned that the species may become extinct. Explain why if 0 ≤ s < 0.4 the species will become extinct. (c) If s = 0.4, the population will stabilise at a fixed size in the long term. What will this size be?
Suppose the population of a particular endangered bird changes on a yearly basis as a discrete dynamic system. Suppose that initially there are 60 juvenile chicks and 30 [60 breeding adults, that is xo Suppose also that the yearly transition matrix is . 30] = [0 1.25] S 0.5' where s is the proportion of chicks that survive to become adults (note that 0 ≤ s ≤ 1 must be true because of what this number represents). (a) Which entry in the transition matrix gives the annual birthrate of chicks per adult? (b) Scientists are concerned that the species may become extinct. Explain why if 0 ≤ s < 0.4 the species will become extinct. (c) If s = 0.4, the population will stabilise at a fixed size in the long term. What will this size be?
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.7: Applications
Problem 14EQ
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