Textbook: Chapter 20 - Landscape Dynamics

Question 1

Border

Answer 1

The place where the edge of one vegetation patch meets the edge of another

Question 2

Corridor

Answer 2

A strip of a particular type of vegetation that differs from the land on both sides

Question 3

Disturbance

Answer 3

A discrete event in time that disrupts an ecosystem, community, or population, changing substrates and resource availability

Question 4

Edge effect

Answer 4

Response of organisms, animals in particular, to environmental conditions created by the edge

Question 5

ecotone

Answer 5

Transition zone between two strucutrally different communities; wide borders that form a transitition zone between adjoining patches

Question 6

Edge species

Answer 6

Species that are restricted exclusively to the edge or border environment

Question 7

Functional connectivity

Answer 7

The degree to which the landscape facilitates the movement of organisms

Question 8

Frequency

Answer 8

In landscape ecology, the mean number of disturbances that ccur within a time interval. In community ecology, then proportion of ample plots in whic a species occurs relative to the total number of sample plots; the probability of finding the spcies in any one sample plot

Question 9

Filter effect

Answer 9

Corridors taht provide dispersal routes for some species but restrict the movement of others

Question 10

Gap

Answer 10

Opening made in a forest canopy by some small disturbance such as windfall; death of an inidivudal tree or group of trees that influecnes the development of vegetation beneath

Question 11

Intensity

Answer 11

A measure of the proportion of the totla biomass or population of a spccies that a disturbance kills or eliminates

Question 12

Interior species

Answer 12

Organisms that require large areas of habitat, even though their home ranges may be small

Question 13

Landscape connectivity

Answer 13

Degree to which the landscape facilitates or impedes the movement of organisms among patches; comprised of functional and structural connectivity

Question 14

Landscape ecology

Answer 14

Study of structure, function and change in a heterogenous landscape composed of interacting ecosystems

Question 15

Matrix

Answer 15

The communities that surround a patch on the alndscape

Question 16

Metacommunitiy

Answer 16

Set of local communities that are linked by the dispersal of mulitple potentially interacting species

Question 17

Mosaic

Answer 17

A pattern of patches, corridors and matrices in the landscape

Question 18

Patch

Answer 18

An area of habitat that differs from its surroundings and has sufficient reosurce to allow a population to persist

Question 19

Structural connectivity

Answer 19

Degree to which patches on a landscpae are contiguous or physically linked to one another

Question 20

Shifting mosaic

Answer 20

Constnatly changing pattern of patches as each patch passes through successive stages of development

Question 21

Scale

Answer 21

Level of resolution within the dimensions of time and space; spatial proportion as a ratio of length on amap to acutal length

Question 22

Theory of island biogeography

Answer 22

Theory stating that the number of species established on an island represents a dynamic equilibrium between the immigration of new colonizing species and the extincition of previously established ones