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Transcript
EARTH’S BIOMES
e. Describe the characteristics of Earth’s major terrestrial biomes (i.e.
tropical rain forest, savannah, temperate, desert, taiga, tundra, and
mountain) and aquatic communities (i.e. freshwater, estuaries, and
marine).
 Biosphere-
the thin zone around the outside of the
Earth that contains all living things.
 The biosphere contains self-sustaining ecosystems
composed of biotic and abiotic factors.
 Abiotic factors are those components of the
ecosystem that are not living, but are integral in
determining the number and types of organisms
that are present.
 In order for an ecosystem to succeed, its biotic
factors must obtain and store energy. In addition,
they must recycle water, oxygen, carbon and
nitrogen.
ECOSYSTEMS
A system
 How the system of plants, animals and other
organisms relate to one another and how both
relate and interact with the environment in
which they live.

COMMUNITIES
a smaller area within the ecosystem
where certain types of plants or animals
live in close proximity to each other
 A community might have very different
types of plants and animals living in one
area---that is, the community is divided
into populations of individual species.
 Habitats are where the plants and
animals live and eat.
 Each species of the tree community has
its own niche, or place, as a member of
the community.

BIOMES
 Large
land area ecosystems
characterized by a dominant form of
plant life and climate type.
 There are many different biomes.
 There is no cut and dry place that
separates the biomes.
 They gradually merge in to the next.
 As climates change, the general area of a
biome will shift.
TERRESTRIAL ECOSYSTEMS
 Characterized
by a dominant form of
plant life and climate type.
 There are several:
 Tundra
 Coniferous forest
 Deciduous forest
 Grassland
 Tropical rain forest
 Desert
AQUATIC ECOSYSTEMS
 Determining
factors are the amount
of light, oxygen and the salinity(salt)
level of the water.
 There are several:
 Freshwater ecosystems
 Marine ecosystems (There are
three zones: intertidal, pelagic, and
benthic)
 Estuary