3. Biome
LocaBon
• Located
around:
–
the
equator
– South
West
North
America
– Central
Asia
– Central/West
Australia
– South
East
Africa
– West
coast
of
Chile
5. Climate
• Hot
and
dry
desert-‐
– Maximum
temperature
49
degrees
Celsius
– Can
get
as
low
as
-‐18
degrees
Celsius
– Soil
is
course-‐textured
and
can
be
rocky
with
good
drainage
– Some
years
can
be
rainless,
some
deserts
can
get
an
average
of
1.5cm
a
year,
like
the
Sahara,
others,
like
the
Mojave,
can
get
28cm
• Semiarid-‐
– 21-‐27
degrees
Celsius
in
the
summer
during
the
day
Bme,
10
degrees
in
the
evening
– 2-‐4cm
of
precipitaBon
annually
– Sandy
soil
• Cold
Desert-‐
– -‐2
–
4
degrees
Celsius
in
the
winter,
21-‐26
degrees
in
summer.
– 15-‐26
cm
of
rainfall
– Heavy
and
salty
soil
11. Succession
• Primary
succession
in
a
desert
occurs
on
sand
dunes
with
the
growth
of
a
pioneer
species,
bacteria.
• These
bacteria,
when
sebled
into
a
sand
dune,
create
ferBle
soil
which
will
make
room
for
plants
to
grow
such
as
grass
and
cactuses.
• Secondary
succession
in
a
desert
would
occur
if
a
flash
flood
were
to
eliminate
all
the
plant
life
in
an
area
but
leave
the
ferBle
soil
to
give
the
opportunity
for
these
plants
to
grow
back.
12. MDC/LDC
• MDCs
such
as
Saudi
Arabia
and
Australia
are
known
for
drilling
for
oil
and
creaBng
large
oil
reserves
which
destroys
the
environment
through
producBon
of
harmful
chemicals
and
destrucBon
of
natural
habitats
that
kill
important
desert
wildlife.
• LDCs
such
as
Afghanistan
and
Pakistan
have,
over
many
years,
destroyed
their
natural
desert
environment
due
to
the
need
to
build
and
expand,
and
year
of
military
acBvity.
The
ferBle
regions
of
their
deserts
have
lost
much
of
their
nutrients
and
air
quality
has
become
very
poor.
13. Human
Impact
• Even
though
both
LDCs
and
MDCs
both
negaBvely
affect
the
environment,
the
key
difference
between
them
is
their
ability
to
fix
it.
MDCs
have
much
more
developed
economies
and
have
the
money
and
technology
to
curb
their
contribuBon
to
environmental
degradaBon.
LDCs,
on
the
other
hand,
are
not
as
developed
and
do
not
know
the
effect
they
have
on
the
environment
and
they
do
not
have
the
funds
to
stop
their
environmental
damage.
