Chapter 17: Factors Influencing the Structure of Communities

Question 1

Total range of environmental conditions under which a species can survive and reproduce

Answer 1

fundamental niche

Question 2

Assumes that the presence and abundance of the individual species found in a given community are solely a result of the independent responses of each individual species to the prevailing physical environment

Answer 2

null model

Question 3

vertical zonation

Answer 3

check the book

Question 4

Species interactions involving many species;

They are not exclusive, nor do they involve only two species

Answer 4

diffuse interactions

Question 5

Competition in which a species experiences interference from many other species that deplete the same resources

Answer 5

diffuse competition

Question 6

Predation that is central to the organization of a community;

The predator enhances one or more inferior competitors by reducing the abundance of the superior competitor

Answer 6

keystone predation

Question 7

connectance

Answer 7

check the book

Question 8

Occurs when a single species of predator feeds on two prey species supporting a higher predator density, increasing the rate at which prey are consumed;

As a result, the density of both prey species is lowered, suggesting a competitive interaction

Answer 8

apparent competition

Question 9

Indirect interaction between two species that is classified as commensalism

Answer 9

indirect commensalism

Question 10

Indirect interaction between two species that is classified as mutualistic

Answer 10

indirect mutualism

Question 11

Influence of producers on the trophic levels above them in a food web

Answer 11

bottom-up control

Question 12

Influence of predators on the structure of lower trophic levels in a food web

Answer 12

top-down control

Question 13

size symmetric competition

Answer 13

check the book

Question 14

size asymmetric competition

Answer 14

check the book

Question 15

Yellowstone trophic cascade

Answer 15

check the book