ECOL 3505H Lecture Notes - Lecture 15: Metapopulation

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yellowllama535

3 Oct 2016

School

University of Georgia

Department

Ecology

Course

ECOL 3505H

Professor

Ford Ballantyne

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Document Summary

Open population immigration and emigration e = probability of local extinction in a given time scale (ie. per year) Of persistence for 2 years = (1-e)(1-e) = (1-e)2. Prob of local persistence for n years = (1-e)n. If e = 0. 6 and n = 5, plocal = (1-0. 6)5 = 0. 0102. If there"s a 60% chance of extinction in a year, the prob of persistence for 5 years is about 1% Prob of regional persistence = 1 (e)(e) = 1-(e)2. Prob of regional persistence for x patches = 1 (e)x. If e = 0. 6 and x = 10, pregional = 1-(0. 6)10 = 0. 99. If there"s a 60% chance of local extinction in a year, there is a 99% chance of regional persistence for a metapopulation of 10 patches. Probability of regional extinction < prob of local extinction. 0

Related Questions

1. Prepare the necessary adjusting entries at December 31, 2015, for the Jasper Company for each of the following situations. Assume that no financial statements were prepared during the year and no adjusting entries were recorded.

a. A two-year fire insurance policy was purchased on August 1, 2015, for $12,000. The company debited prepaid insurance for the entire amount.

b. Depreciation on equipment totalled $20,000 for the year.

c. Employee salaries of $27,000 for December will be paid in early January 2016.

d. On October 1, 2013, the company lent $50,000 to a customer. The customer signed a note that requires principal and interest at 8% to be paid on September 30, 2016.

e. In July, the company purchased supplies for $4,500. The entry was recorded as a debit to supplies expense. Supplies on hand at the end of the year totalled $2,200. No supplies had been previously purchased.

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19) Given an employee cost of effort function (where e is given in hours worked per week and each unit of e produces an extra $100 in sales):

c(e) = 0 if e<=30

(e-30)2 if e>30

If the firm offers a salary only job of $1000 per week, what is the employee's payoff net of effort costs for a 50 hour work week?

		600
		900
		1000
		1590
		5050

20) Given an employee cost of effort function (where e is given in hours worked per week and each unit of e produces an extra $100 in sales):

c(e) = 0 if e<=30

(e-30)2 if e>30

If the firm offers a salary-plus-commission job of $1000 per week plus 20% commission on sales. What is the change in salary and of cost of increasing effort from 50 to 51? Will the worker increase his effort to 51 hours?

		40 and 21 respectively, yes.
		20 and 10.5 respectively, yes.
		1500 and 50 respectively, yes.
		15 and 55 respectively, no.
		20 and 41 respectively, no.

8) 8) When asked in an interview what she missed the most because of the time she spent training for the Olympics, a rower, who lived on her own, answered "a normal social life." She also revealed that she had given up a job that paid $30 000 per year to train full-time. She received a grant of $8 000 per year from Sport Canada, but this failed to cover all her training expenses. Her food and rent were $5 000 per year and training expenses were $12 000 per year. Aside from the value of a normal social life, what is the annual opportunity cost, expressed in dollars, to this rower of "Going for Gold"? A) $25 000 B ) $4000 $34 000D ) $39 000 E) $30 000

ECOL 3505H Lecture Notes - Lecture 15: Metapopulation

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