Exam 17: Biogeographic Divisions

Trees and shrubs that seasonally loose their leaves are called

Species extinctions are inevitable,so expending resources on combating species loss is pointless.

Shrub vegetation refers to

-This extensive biome is dominated by evergreen needleleaf forests.

Biomass in a rain forest is concentrated in the dense mass of overhead leaves of the overstory and canopy.

The range of environmental conditions in ecotones make them areas of high biodiversity.

Biomes are based on potential mature vegetation rather than the actual vegetation.

The biome concept has been applied equally to marine and aquatic systems as it has to terrestrial systems.

The Mediterranean shrubland biome is the most extensive terrestrial biome.

This biome,with some deciduous trees and an open parkland vegetation type,are transitional between tropical rain forest and grassland.

Characteristic fauna of this biome include large ungulates (hooved mammals),such as giraffe,zebra,buffalo,gazelle,wildebeest,antelope,and rhinoceros.

Though occupying only 7% of the worldʹs total land area,tropical rain forests account for approximately 50% of Earthʹs species and about half of its remaining forests.

Which of the following is a topic of research in conservation biogeography?

Which of the following best describes the vegetation of the tropical rain forest biome?

This biome occurs in equatorial regions with erratic rainfall and typically occur on the margins of tropic rainforests.

This biome is generally located north of the 10°C (50°F)isotherm for the warmest month,such as the extreme northern areas of North America and Russia.

The boundaries of biogeographic regions are usually quite arbitrary,usually following political boundaries rather than being based on biophysical criteria.

Each year,an area of tropical rain forest approximately the size of Wisconsin is cleared.

All areas now classified as Arctic tundra were covered by ice during the Pleistocene glaciations.

Moist continental climates support several distinct communities of woody vegetation in this biome in North America,Europe,and Asia.