Download BIOMES

ECOSYSTEMS
(BIOMES)
PP 417- 428
 Terrestrial
 Aquatic
TWO TYPES
TERRESTRIAL ECOSYSTEMS
TUNDRA
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Cold with really long
winters
Very little rain
Permafrost, nutrient
poor from slow
decay
Treeless and small
plants
TAIGA
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Cold with long
winters
Soil is low in
nutrients
Evergreen trees
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RAINFORESTS
Warm to hot
Moist soil but low in
nutrients
Year round growing
Very diverse
Near equator
Contains 1/5 of
world’s species
TEMPERATE DECIDUOUS
FOREST
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Seasons
Warmer winters and
longer summers as
compared to Taiga
Broad leaved trees and
dense shrubs
TEMPERATE
GRASSLANDS
• Rich and fertile soil/
farmland
• Mostly grasses
• Same latitude as TDF
but Interior of
continents
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SAVANNAS
warm to hot
More rain than
deserts
Low in nutrients and
thin topsoil
Tall grasses and
scattered trees
alternating wet and
dry seasons
CHAPPARAL
 Mild rainy winters
and dry hot
summers
 Middle latitudes near
coasts (Southern
CA)
 Dense shrubs and
scattered trees
DESERTS
 Extremely cold to
extreme hot
 Dry, sandy, and
nutrient poor soil
 Sparse, small plants
 Plants modified with
waxy leaves
AQUATIC ECOSYSTEMS
OCEANIC
 Photic vs Aphotic : sunlight vs no sunlight
 in areas with sunlight organisms can
undergo photosynthesis and therefore are
the most productive
 Pelagic: open ocean
 Benthic: bottom of ocean with many
decaying organisms and detritivores
NERITIC
 Rich in plankton
 photic
 Nutrient rich due to
upwelling from the
bottom of the ocean
INTERTIDAL
 Organisms adapted
to air exposure
 Animals: sea stars,
urchins, mussel etc.
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ESTUARIES
Where rivers flow
into the ocean
Plenty of light
River deposits lots of
minerals and
nutrients
Rich in species
RIVERS and
Streams
 Freshwater that
flows down a
gradient
 Organisms adapted
to withstand current
 Slow moving rivers
are richer
 Supports fish,
amphibians,
mammals, and
birds
Lakes and Ponds
 Eutrophic- rich in
organic matter,
murky water,
eventually leads to
low O2 levels
 Oligotrophic- little
organic matter,
water is clear
 Animals: fish,
muskrat, turtles,
snakes, and birds