Transcript biomes-review-ppt

A
Warm up 10/15/13: Identify each biome.
B
C
D The animals include small nocturnal
(active at night) carnivores. The
dominant animals are burrowers
and kangaroo rats. There are also
insects, arachnids, reptiles and
birds. The animals stay inactive in
protected hideaways during the hot
day and come out to forage at dusk,
dawn or at night, when
temperatures are cooler.
ENVIRONMENTAL PROBLEMS
BACKGROUND INFORMATION
On April 20, 2010, the Deep Water Horizon oil rig
exploded fifty-two miles off the coast of Louisiana,
spewing fireballs into the air. This oil spill occurred in
the Gulf of Mexico has been the worst environmental
catastrophe in U.S. history.
An elite team of chemists and engineers from the
federal government and private companies raced
against the clock to plug the leak inside the oil rig
5,000 feet below the water's surface. On the Louisiana
coast, biologists and environmentalists struggle to
keep the oil from damaging the area's fragile
ecosystems.
Biomes
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9.
• Temperatures are very low.
• Precipitation is primarily in the form of snow, 40100 cm annually.
• Soil is thin, nutrient-poor, and acidic.
• Flora consist mostly of cold-tolerant evergreen
conifers with needle-like leaves, such as pine,
fir, and spruce.
• Fauna include woodpeckers, hawks, moose,
bear, weasel, lynx, fox, wolf, deer, hares,
chipmunks, shrews, and bats
10.
• Trees are distinguished by broad leaves
that are lost annually and include such
species as oak, hickory, beech, hemlock,
maple, basswood, cottonwood, elm,
willow, and spring-flowering herbs.
• Fauna is represented by squirrels, rabbits,
skunks, birds, deer, brown bear.
• Evergreens such as pines
11.
• Temperature is on average 20-25° C and varies little throughout the
year: the average temperatures of the three warmest and three
coldest months do not differ by more than 5 degrees.
• Precipitation is evenly distributed throughout the year, with annual
rainfall exceeding 400cm.
• Soil is nutrient-poor and acidic. Decomposition is rapid and soils are
subject to heavy leaching.
• Flora is highly diverse: one square kilometer may contain as many
as 100 different tree species. Trees are 25-35 m tall, with buttressed
trunks and shallow roots, mostly evergreen, with large dark green
leaves. Plants such as orchids, bromeliads, vines (lianas), ferns,
mosses, and palms.
• Fauna include numerous birds, bats, small mammals, and insects,
primates, snakes, jaguars, tucans, etc.
• The leaves form a canopy over the ground.
12.
• The animals include small nocturnal
(active at night) carnivores. The dominant
animals are burrowers and kangaroo rats.
There are also insects, arachnids, reptiles
and birds. The animals stay inactive in
protected hideaways during the hot day
and come out to forage at dusk, dawn or
at night, when temperatures are cooler.
13.• Extremely cold climate
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Low biotic diversity
Simple vegetation structure
Limitation of drainage
Short season of growth and reproduction
Energy and nutrients in the form of dead organic
material
• Large population oscillations low shrubs,
sedges, reindeer mosses, liverworts, and
grasses
• 400 varieties of flowers
• crustose and foliose lichen
14.
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16.
17.
• include giraffes, zebras, buffaloes,
kangaroos, mice, moles, gophers, ground
squirrels, snakes, worms, termites,
beetles, lions, leopards, hyenas, and
elephants.