Final Exam Ch. 19

Question 1

Pioneer species

Answer 1

The earliest species to arrive at a site

Question 2

Climax community

Answer 2

The final stage in the process of succession

Question 3

Chronosequence

Answer 3

A sequence of communities that exist over time at a given location

Question 4

Primary succession

Answer 4

The development of communities in habitats that are initially devoid of plants and organic soil

Question 5

Secondary succession

Answer 5

The development of communities in disturbed habitats that contain no plants but still contain organic soil

Question 6

Facilitation

Answer 6

A mechanism in which one species increases the probability that a second species can become established

Question 7

Inhibition

Answer 7

A mechanism in which one species decreases the probability that a second species will become established

Question 8

Priority effect

Answer 8

When the arrival of species at a site affects the colonization of other species

Question 9

Tolerance

Answer 9

A mechanism of succession in which the probability that a species can become established depends on its dispersal ability and its ability to persist under the physical conditions of the environment

Question 10

Succession

Answer 10

The process by which the species composition of a community changes over time