BISC 100 Lecture 13: BISC 100 ECOLOGY PART 4

• School: Simon Fraser University
• Department: Biological Sciences
• Course: BISC 100
• Professor: Leah Bendell- Young

Document Summary

Terrestrial biomes: terrestrial ecosystems are grouped into biomes primarily on the basis of their vegetation type . The geographic distribution of plants, and thus of biomes, largely depends on climate, with temperature and rainfall often the key factors determining the kind of biome in a particular region. If the climate in two geographically separate areas is similar, they may have the same type of biome. Decreases in snow and ice coverage, and. Changes in the length of the growing season: at the same time, many natural biomes have been fragmented and altered by human activity. Tropical forest: tropical forests occur in equatorial areas, where the temperature is warm year-round. The type of vegetation is determined primarily by rainfall. The layered structure of tropical rain forests provides many different habitats. Treetops form a closed canopy over one or two layers of smaller trees and a shrub understory. Rainfall is less plentiful in other tropical forests.