HOW TO ACCESS NOTES

• 2 Ways:

– Go to: http://www.sfu.ca/biology/courses/bisc407/

– OR

– Biology homepage, Biology Dept., Undergrad link, Bisc 407 link

SOME INFO

• Textbook: The following textbook is recommended but not required: A Primer of Population Ecology, N. Gotelli

• In addition, copies of relevant original articles will be available via our website.

• Tutorial outline Each week, a portion of the tutorial will be allotted to discussion of and questions pertaining to the current lecture.

SOME INFO:II

• Article reports Each student will prepare 2 written reports on current journal articles of his/her choice. Reports should be less than 3 pages in length and typed if possible. Reports will be graded on (i) demonstration of understanding of the article, and (ii) quality of the written report. The following journals are suggested sources for articles:Ecology, Ecology Letters, American Naturalist, J. Animal Ecology J. Theoretical Biology, Oecologia, Theoretical Population Biology, Oikos, etc.

•

SOME INFO:III

Assignments Each student will be provided several problem sets during the semester. The sets are meant to provide "hands-on" experience with quantitative analysis. Completed assignments should contain all of the analysis. Final solutions alone will be judged insufficient. Late submissions will be docked 5% per day.

SOME INFO:IV

Mark distribution Midterm (Oct. 21) 25%Final Exam (Dec. 12) 45% Tutorial 10%Assignments 15%Reports 5%

Tutorials will be graded on overall contribution to tutorial discussion.

GRADE SCHEME

A+ A A- B+ B B- C+ C C- D F

>= 87 >=80<87

>=78.5<80

>=77<78.5

>=70<77

>=68.5<70

>=67<68.5

>=60<67

>=58.5<60

>=50<58.5

<50

POPULATIONS

• All individuals in a given area

• Group of interbreeding individuals at a given locality

• (Species - groups of actual or potential interbreeding populations)

POPULATIONS: WORKING DEFINITIONS

• Absolute: # individuals/ unit area

• Intensity: # individuals/ unit habitat

• Basic: Intermediate of absolute and intensity e.g. #/cm2 leaf

surface

POPULATION TABLE

Day Adult Egg L1 L2 L3 Pupa Adult Egg L1

0 0 0

10 80 140

20 30 450

30 3 0 300

40 0 0 10 280

50 0 0 0 20 200

60 0 0 310

70 0 0 160 10

80 0 0 0 150 500

90 0 0 5 1100 170

POPULATION DYNAMICS

Generation

POPULATION CURVES

• Total Population Curve: total number of individuals vs. time

• Partial Population Curve: # of individuals of each life stage vs. time

SIMULATION 1

• Three stages: egg(3), larva(3), adult(1)

• All individuals live full life

• Recruit eggs every day via random draw (0,20)

• Calculate number of insect-days

FULL LIFE EXPECTANCY

INSECT-DAYS= 952

PREDICT 952/7

= 136 ADULTS

OBSERVE 136 ADULTS

SIMULATION 2

• Three stages: egg(3), larva(3), adult(1)• All individuals live full life • Recruit eggs every day via random draw

(0,20)• Crisis with probability of 0.15/day• Each crisis kills 0.2 larvae • Calculate number of insect-days

INCLUDES CRISIS

INSECT-

DAYS = 633

PREDICT 633/7

= 91 ADULTS

OBSERVE

74 ADULTS

POPULATION DYNAMICS

G1