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World Biomes
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http://www.cotf.edu/ete/modules/msese/earthsysflr/
Tropical
Rainforest
Location: Found near
equator…little variation
in temperatures. No
distinct seasonal
changes.
Earth's most complex land
biome
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Tropical
Rainforest
Abiotic factors
high biodiversity and biomass
both hot and moist;
ideal for bacteria and other microorganisms; they quickly decompose matter on the forest floor allowing nutrients to be recycled.
<1 cm of topsoil
About 100 in/yr of rainfall
http://www.cotf.edu/ete/modules/msese/earthsysfl
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Bougainvillea
Sunlight is a major limiting factor
Plants grow in layers (canopy receives most light)
Shallow, wide roots since soil is so thin and poor in nutrients
Little sun reaches the floor
Tropical Rainforest
Plant adaptations
Bangul Bamboo
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Many symbiotic relationships
Live in different levels of canopy
Wagler’s pit viper
Silvery Gibbon
Slender Lorishttp://www.blueplanetbiomes.org/rnfrst_animal_page.htm
Tropical
Rainforest
Animal
Adaptations
Many animals are
specialists and require
special habitat
components to survive
Camouflage is common
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Threats to the Tropical
Rainforest
http://www.blueplanetbiomes.org/rnfrst_animal_page.htm
Humans strip the rainforests
for uses including logging and
cattle ranching.
In addition to the plants and
animals that are displaced by
this destruction, entire
civilizations of people are
also without a home.
You can help by promoting
sustainable use of the
rainforests’ products
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Temperate Deciduous Forests
Location:
found in temperate zone
(about 480 North lat) Much of the human population lives in this biome
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tbdf/tbdf.html
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Characterized by an abundance of deciduous (leaf bearing) trees
Characterized by 4 seasons
Soils: Deep soil layers,
rich in nutrients
Precipitation: 30–100 in/yr
in all forms (snow, rain,
hail, fog, etc.)
Temperate Deciduous Forests
Abiotic Factors
http://www.cotf.edu/ete/modules/msese/earthsysflr/taiga.html
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More diversity in the deciduous forest vs.
the coniferous forest due to increased
sunlight.
Trees adapt to varied climate by
becoming dormant in winter
White BirchBirchhttp://www.blueplanetbiomes.org/deciduous_plant_
page.htm
Lady Fern
Geulder Rose
Temperate Deciduous forest
Plant adaptations
Deciduous forests grow in layers
More sunlight reaches the ground
compared to a rainforest so you
will find more ground dwelling
plants.
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Lose Winter Coat
Adapt to many seasons
Eat from different layers of the forest
Bald Eagle
Fat Dormouse
Least Weasel
http://www.blueplanetbiomes.org/deciduous_animal_page.htm
Temperate Deciduous
ForestAnimal Adaptations
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Threats to Temperate Deciduous
Forests
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tbdf/tbdf.html
Many forests are
cleared to
provide housing
for humans.
Careful use of the
resource can
provide a
renewable
system if we
don’t take too
much habitat
away.
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Taiga
aka Northern Coniferous
Forest or Boreal Forest
Location: Found
only in Northern
Hemisphere
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Taiga
Abiotic factors
Winters are long
and cold
Averages 100 in/yr
precipitation—
mostly snow
Soil poor in
nutrients and very
acidic
Growing season is
very short
http://www.uwsp.edu/geo/faculty/ritter/geog101/modules/
ecosystems_biomes/biomes_northern_forest.html
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Balsam Fir
Coniferous (needle-bearing) trees
are abundant
Roots long to anchor trees
Needles long, thin and waxy
Low sunlight and poor soil keeps
plants from growing on forest floorhttp://www.inchinapinch.com/hab_pgs/terres/coniferous/plants.htm
Fireweed
Taiga Plant adaptations
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Moose
Adapt for cold winters
Burrow, hibernate, warm coat, insulation, etc.
http://www.inchinapinch.com/hab_pgs/terres/coniferous/animals.htm Great Grey Owl
Animal
Adaptations of
the Taiga
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Threats to the Taiga
Mining operations can
irreparably damage
this fragile
ecosystem.
Pollution left behind
can also put animals
and plants at risk.
http://www.blueplanetbiomes.org/taiga.h
tm
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Savannas (Tropical Grasslands)
Contain the greatest number of grazing animals on Earth.
Location: Found in the tropics…near equator
Amount of precipitation supports tall grasses but only occasional trees.
The word savanna stems from an Amerind term for plainshttp://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/savanna/savanna.html
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Tropical Savanna
Abiotic Factors
Rainy and dry season
25-150 in/yr precipitation
Fire plays a large role in this ecosystem
http://www.cotf.edu/ete/modules/msese/earthsysflr/savannah.html
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Whistling Thorn
Umbrella Thorn AcaciaTropical Savanna
Plant
Adaptations
Grows in Tufts
Resistance to Drought
Many plants have thorns and
sharp leaves to protect
against predation.
http://www.blueplanetbiomes.org/savanna_plant_page.htm
Kangaroos Paws
Baobab
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Adapt for short rainy
season—migrate as
necessary
Limited food leads to
vertical feeding
Reproduce during rainy
season—ensures more
young survive
http://www.blueplanetbiomes.org/savanna_animal_page.htm
Zebras
Chacma Baboon
Tropical Savanna
Animal Adaptations
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Threats to the Tropical
Savanna
http://www.blueplanetbiomes.org/savanna_animal_page.htm
Invasive species
Changes in fire management
Because of their low elevation,
some savannas are threatened
by minor rises in sea level
associated with global climate
change
Koala
Elephant
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Steppe
Dry, cold, grasslands
Location: Found in
Russia and the
Ukraine
http://www.blueplanetbiomes.org/steppe.htm
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Steppe Abiotic Factors
www.plasmacy.de
www.wsu.edu
<50 in/year precipitation
Mountains often play a role in climate characteristics
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most abundant are plants called Bunch grasses,
fine bladed grasses that grow in clumps to
preserve water
Tumbleweed
Sweet Vernal
Plant adaptations of the Steppe
http://www.blueplanetbiomes.org/steppe_plant_page.htm
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Many migrate, hibernate or burrow during extremes in temp and precipitation
http://www.blueplanetbiomes.org/steppe_animal_page.htm
Adaptations of Steppe Animals
Mongolian Gerbil
Saiga Antelope
Gazelle herd
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Threats to the Steppe
Overgrazing…nomadic tribes
have started to spend more time
in one location,
Infrastructure development
(roads, buildings, etc)
Unmanaged hunting and
poaching is destroying herds of
animals
Corsac fox
Lynx
Milk vetchhttp://www.blueplanetbiomes.org/steppe.h
tm
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Prairie and Steppe:
Grassland areas
50-75 cm/yr
Characteristic high Winds
http://www.blueplanetbiomes.org/steppe.htm
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Sod-forming grasses that
won’t dry out or blow away in wind.
Fleabane
http://www.blueplanetbiomes.org/prairie_plants_page.htm
Buffalo Grass
Prairie Plant Adaptations
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Many adaptations to survive
extremes
Prairie dog
Bobcat
http://www.blueplanetbiomes.org/pampas_
animal_page.htm
Prairie Animal Adaptations
Geoffrey’s cat
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Grasslandshttp://www.blueplanetbiomes.org/grasslands.htm
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Chaparral
Location: Primarily in
coastal areas with
Mediterranean
climates. About 300
N and S of the
equator.
http://www.blueplanetbiomes.org/chaparral.htm
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Chaparral—Abiotic Factors
Climate: hot, dry
summers, mild, wet
winters. Slight
variations in seasonal
temperatures…NICE!
California Chaparral
Mediterranean Chaparral
http://www.blueplanetbiomes.org/world_
biomes.htm
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Chaparral—Plant
Adaptations
Mostly low-lying shrubs
and small trees.
Many plants have leathery
leaves to resist water
loss
Many plant species have
oils in leaves to help
them resist fire…the fire
will take out “weaker”
plants that don’t belong.
Blue Oak
Fairy Duster
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Chaparral—Animal
Adaptations
Camouflage—to avoid
predation
Many animals will change
their diet as the season
changes.
Puma
Aardwolf
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Threats to the Chaparral
Human development—
very desirable climate
for humans to live.Grey Fox
King Protea
Wild Goat
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Desert
Ecosystems
Location:
Depending
on type of
desert, you
will find
them in
various
locations.
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Desert
Abiotic
factors
<10 in/yr of rain
Little to no topsoil due to high winds.
Minerals not deep in soil.
Too dry for decay
http://www.cotf.edu/ete/modules/msese/earthsysflr/taiga.html
While there are many types of
deserts, they all share one
characteristic: They are the
driest places on Earth!
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Joshua Treehttp://www.blueplanetbiomes.org/desert_plant_page.htm
Desert Plant
Adaptations:
Spines
Succulents
Thick, waxy cuticle
Shallow, broad
roots
Barrel Cactus
Ocotollio
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Desert Animal Adaptations:
Get water from food
Thick outer coat
Burrow during day
Large ears
Smaller animals =
less surface area
http://www.blueplanetbiomes.org/desert_animal_page.htm
Javelina
Bob Cat
Armadillo Lizard
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Threats to the Desert
Residential development
Off road recreational
activities destroy habitat
for plants and animals.
Some plants are removed by
collectors, endangering the
population.
Sonoran Desert
Dry Desert
http://www.blueplanetbiomes.org/world_biomes.htm
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http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tundra/tundra.html
Tundra
Location:
Found
north of
the Arctic
Circle
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Tundra Abiotic Factors
<25 in/year
Temp rarely higher than 100C
Permafrost layer
Short growing season
http://www.cotf.edu/ete/modules/msese/earthsysflr/taiga.html
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Tundra Plant Adaptations
Growing close to the ground
Having shallow roots to absorb the
limited water resources.
Trees grow less than 1 m high!
cottongrass
Reindeer lichen
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Perennials
Woody shrubs
http://www.runet.edu/~swoodwar/CLASSES/GEOG235/biomes/tundra/tundra.html
Heaths
Examples of Tundra Plants
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Many visitors, migration
Few predators
Little Competition
Small ears
Insulation, thick
coat
Arctic foxsnowy owl
Grizzly Bear
Tundra Animal
Adaptations
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Threats to the Tundra
One of the most fragile biomes on the planet
The tundra is
slow to
recover from
damage.
Oil drilling
is
proposed
in Alaska
and other
areas!
Tufted Saxifrage
Polar Bear
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Freshwater Ecosystems
• Salinity <0.5 ppt.
• Lake are the deepest of fresh water systems
• Lakes are fed by underground aquifer or stream
• Ponds are fed by rainfall and may be seasonalhttp://mbgnet.mobot.org/fresh/
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Ponds
• Sun can reach bottom
• Fed by rainfall
• May be seasonal
• Algae and plants
throughout
Microscopic Animals
and Algae
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Lakes and ponds—Abiotic Factors
Littoral
zone: nutrient rich
area found
close to shore
Benthic
zone: bottom of the
lake where no
sunlight can
reach.
www.dnr.wi.gov
www.uwsp.edu
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• Plants are floating
algae and plants
along shoreline
• Animals live in or
near water
Lakes and ponds:
Plants and Animals
Adaptations
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Threats to lakes and ponds
All water
systems
are being
polluted
and
degraded
by human
impactwww.aquaticbiomes.gov
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Marshhttp://mbgnet.mobot.org/fresh/wetlands/
Uses:
Animal/plant
homes
Carbon
“sink”
Water
recharge
areas,
removing
pollutants
Types: Brackish and
freshwater
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Marsh—Plant
adaptations
• Very shallow with land
occasionally exposed
• Saturated soil
• Low oxygen in water
and soil
• Emergent plants
http://www.blueplanetbiomes.org/world_biomes.htm
Heron
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Swamp/Bogs
Location: Found on flat, poorly
drained land, often near streams
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Swamps/Bogs Abiotic
factors
Land soaked because of poor drainage
Decay is slow - Soil is acidic
Swamps
Large trees/shrubs
Adapted to muddy soils
Bogs - sphagnum
moss is
dominanthttp://mbgnet.mobot.org/fresh/wetlands/
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Threats to Wetlands
Previous backfilling
and clearing for
farmland or
development has
been a concern.
www.kathimitchell.com
http://www.ucmp.berkeley.edu/glossary/gloss5/bi
ome/aquatic.html
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Rivers
At headwaters,
usually cold
and highly
oxygenated.
As it flows, it
will broaden
out, warm up
and this
completely
changes the
biota you’ll
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River: Plant and Animal
Adaptations
Will vary based
on where in
the river they
are…at the
headwaters,
organisms
need to hang
on!
www.3d-screensaver-
downloads.com
www.cs.dartmouth.edu
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Threats to Rivers
Industry uses
water to
dispose of
waste products
Runoff from
homes and
other places
causes
changes in
acidity,
Dams alter the
flow of the
water
www.nwk.usace.army.mil
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Estuarieshttp://mbgnet.mobot.org/salt/sandy/
• Fresh and salt water
meet
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Plant and Animal Adaptations of
Estuaries
Very productive
biome because
it receives lots
of light and
nutrients
Often used as
nursery for
youngwww.lookoutnow.com & www.visualparadox.com
Manatee
and
goos
e
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Threats to Estuaries
Many ports are
found on
estuaries—pollution
Human population
www.davenewbould.co.uk
pers-erf.org
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Coral Reefs
• Close to equator
• Consistent water temperature
• Shallow water
• Low in Nutrients
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• Breeding area for
many fishhttp://mbgnet.mobot.org/salt/coral/
Animal adaptations of
the Coral Reef
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Threats to the Coral Reefs
Temperature is important,
too hot or too cold and
the animals can’t live
there to create limestone
Human intrusion (scuba diving)
is damaging if you
touch/step on the reef
Pollution is also a concern.
www.calacademy.org
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Oceanshttp://mbgnet.mobot.org/salt/sandy/
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Ocean Abiotic factors
Open ocean is one of
the least productive
areas on earth, too
little sunlight to
support plant
growth
Covers nearly
¾ of the
Earth’s
surface.
http://www.worldbiomes.com/bio
mes_aquatic.htm
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Plants are micro and macroscopic
Have floating plants (kelp shown here)
Ocean Plant adaptations
http://www.calstatela.edu/faculty/eviau/edit557/oceans/norma/onfrm.htm
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Ocean Animal Adaptations
Zooplankton—
sea’s smallest
herbivores
Deep ocean animals
feed on detritus—
floating debris in the
water column.
http://www.kidzworld.com/site/p1951.htm
Hammerhead
Lion fish
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Threats to
the Oceans
While the
oceans are
vast, they
are
becoming
more
polluted
Overfishing
and some
fishing
methods are
destroying
fishing
grounds.http://www.worldbiomes.com/biomes_aquatic.htm
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Polar Ecosystems
Can be
considered
marine
ecosystems
since the base
of food chain is
phytoplankton
www.defenders.org
www.awi-bremerhaven.de
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Arctic vs. Antarctic
Arctic
Relatively
shallow, lots
of nutrients
for large
variety of
animals in
food web,
People, seals
and polar
bears found
nmml.afsc.noaa.gov
Antarctic
Penguins live
here—only continent
not used by humans
(exc. Research)
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Threats to the Polar Ecosystems
Reserves of minerals
draw humans to
these fragile
ecosystems.
The main threat to
wildlife has been
the increase in
tourism—garbage
left behindnewt.phys.unsw.edu.a
u