Exam 20: Landscape Dynamics

The ________ effect refers to the rich diversity of life that occurs along the border between adjacent habitat patches,represented by species from both adjacent patches and species adapted to edge habitats.

Animal species inhabiting edges of habitat patches usually require two or more habitat types within their home range or territory.

The impact of a disturbance is determined by its

Patch size is generally more important for plant populations than for animal populations.

Habitat fragmentation is harmful because no species are adapted to living along habitat edges.

Which of the following can be considered a habitat corridor?

Within a landscape mosaic,patches

The degree to which the landscape facilitates or impedes the movement of organisms among patches is referred to as landscape ________.

The theory of island biogeography predicts that large islands have more species than smaller islands.

When a forest gradually merges into a grassland over a wide area,the border between the two landscape patches is referred to as a(n)

The size and shape of habitat patches are determined more by the activities of animals than by the interaction of geology,topography,and climate.

Borders between patches that result from natural disturbances typically change over time.

The landscape can be thought of as a shifting mosaic of habitat patches,each in a phase of successional development.

The phenomenon in which different-sized gaps in corridors allow certain organisms to cross and restrict others is referred to as the ________ effect.

The ________ of a disturbance refers to the spatial extent of the impact of the disturbance relative to the size of the affected landscape.

The theory of island biogeography was developed for islands and cannot be applied to habitat patches within a larger landscape.

The ________ of a disturbance is measured by the proportion of total biomass or population of a species that the disturbance kills or eliminates.

For a given body size,the home range of carnivores is greater than that of herbivores.

According to the theory of island biogeography,the islands with the most species will be

Wind can function as an agent of disturbance.