BIO120H1 Lecture Notes - Lecture 6: Net Reproduction Rate, Survivorship Curve, Fecundity

42 views3 pages
12 Nov 2011
School
Department
Course
Professor
klumsymonarch and 696 others unlocked
BIO120H1 Full Course Notes
36
BIO120H1 Full Course Notes
Verified Note
36 documents

Document Summary

Age structure: the distribution of individuals among age classes within a population. Fecundity: the number of offspring produced per reproductive episode: reproductive period usually preceded by resource-accumulation phase, fecundity-survivorship trade-offs = cost of reproduction. Type ii survivorship curve constant survival rate with age. Type i survivorship curve high survival rate at the beginning, falls off abruptly with age as the age-specific mortality rate increases (human; mortality is low early in life and then increases rapidly later in life) . Type iii survivorship curve high mortality rate in early life, survival rate increase later in life. (fishes; young individuals are extremely vulnerable to predation and other risk factors, which they escape as they grow larger and mature). Generation time (t): the average period between the birth of an individual and the birth of its offspring; average age at which a female gives birth: this is a formula for a weighted average. Since ( ) ( ) , then,

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related textbook solutions

Related Documents

Related Questions