Ch18 Community Structure3.pdf

1 Page
Unlock Document

University of Toronto St. George
University College Courses
Spencer Barrett

BIO120H © Lis| Page 311 Effect of Food Web Structure on Species Diversity  species diversity increases food web diversity  feeding relationships affect species diversity w/in a community  John Terborgh et al. (consumer effect on species diversity) John Terborgh  unintended predator removal in rain forests of Venezuela by dam  dam created patches – too small to support predators of the herbivores  howler monkeys, green iguanas –pop. skyrocketed  ecosystem “meltdown” occurred and affected regeneration of trees and decreased productivity and plant diversity  keystone consumer: species, often a predator, that has a dominant influence on the structure of a community, which may be revealed when that species is removed A Variety of Food Web Types  Robert Paine  described diff. types of food webs that describe diff. ways in which species influence one another w/in communities  connectedness web: a food web that emphasizes the feeding relationships among species within a community  energy flow web: a food web in which the connections between species are quantified by the flux of energy bet
More Less

Related notes for UNI101Y1

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.