1. No category

Tuesday November 27, 2012
• Learning Target: I can Identify and
communicate the similarities and differences of
freshwater and marine biomes
• Essential question : What would be necessary
for an animal to be able to survive in freshwater
and marine biome
• Warm Up: Answer question 1- 5 on unit 4 study
guide
• Homework: Study your study guide and
vocabu.lary
Nov 20, 10 am, 20°C
VOCABULARY JOURNAL
Freshwater
Water not containing salts
Marine
Relating to the ocean and the animals and
plants that live there (salty)
Estuary
An area of water where freshwater and saltwater
combine (river meets an ocean). Estuaries are the
nursery of many aquatic animals.
Freshwater ~V.S~ Marine Biome
Part 1
1. Characteristics
2. Abiotic & biotic Factors
Earth: The Water Planet
¾ of the Earth is covered in water
Freshwater Biome
• Definition: Water not
containing salt
• Covers 1/5 of the
Earth’s surface
• The freshwater biome
includes:
–
–
–
–
ponds
lakes
streams
rivers
Marine Aquatic Biome
• Definition: The ocean
and the animals and
planets that live there.
Contains salt
• The Marine Biome
includes:
–
–
–
–
–
Pacific Ocean
Atlantic Ocean
Indian Ocean
Southern Ocean
Arctic Ocean
Aquatic Biome
Ponds
Lakes
Streams
Rivers
Ponds and Lakes
1. Ponds and lakes are bodies of unmoving (still)
fresh water.
2. Many have limited biodiversity (Biodiversity =
number of and variety of organisms found
in an area) because they are isolated from
one another and from other water sources such
as rivers and oceans.
Streams and Rivers
• Streams and rivers consist of bodies
of moving water.
• Rivers begin at an area called
headwaters ( colder and more
oxygen) and end at an area called
the mouth (warmer, slower,
sediment).
Freshwater Location
Freshwater can be found all over the world and
covers 1/5 of the Earth’s surface.
Characteristics of the Marine
Biome
• cover 71% of the Earth’s
Surface.
• Some places of the ocean
floor are deeper than Mt.
Everest is high.
• 96.5% of the ocean is pure
water
• 3.5% is dissolved minerals
(High Salinity)
Biotic & Abiotic
Abiotic and Biotic
Factors of the
Freshwater Biome
Biotic Factors (living)
Abiotic Factors (nonliving)
• Freshwater biomes
contain about 12 % of
the worlds animals
• 40% of the worlds fish
species.
• Many types of plants
• the speed of the water
flow
• Climate (average
weather)
• The fresh water biome
contains little salt. (low
salinity) Usually less than
1%.
• and amount of sunlight.
Freshwater Biome
• Most Important abiotic factor is
sunlight, which is necessary for
photosynthesis.
• Water absorbs sunlight, so there
is only enough sunlight for
photosynthesis near the surface
or in the shallow water.
• Algae are the main Producers of
the fresh water biome.
Energy Transformation: radiant  chemical (radiant
energy/SUNLIGHT is converted to chemical
energy/SUGAR as plants make their food in the
process of photosynthesis)
Components of the Marine
Biome
• Abiotic (nonliving)
– Water
– Sunlight/darkness
– Minerals (from
runoff)
– Dissolved gases
• Biotic (living)
– Producers
– Consumers
– Decomposers
Estuaries:
Characteristics
• Where rivers meet the
ocean. (freshwater and
marine meet)
• Between 1 and 3.5%
Salinity.
• Organisms have to be
adapted to to live in a
changing environment.
• water level and amount
of salt (salinity)
fluctuates (changes)
Abiotic Factors
• Saltwater and freshwater
mix
• Large supply of nutrients
(deposited by the river)
• Biotic Factors
• Large diversity of
organisms
Independent Practice
Create a Venn diagram of the characteristics, abiotic
& biotic factors of freshwater an marine biomes
Freshwater
~ covers 1/ 5 of Earth
~Low salinity (less
than 1% salt)
~ lakes (unmoving
and limited
biodiversity)
~ Ponds(unmoving
and limited
biodiversity)
~ Rivers (moving –
more biodiversity)
~Streams (moving –
more biodiversity)
Marine
~Estuary
~Where river
meets
Ocean
~Between 1
and 3.5%
Salinity
~Organisms
have to be
able to live in
a changing
environment
~ Covers 71% of
the Earth’s Surface
~deep
~3.5% dissolved
minerals (mostly
salt)
~ variety of biotic
and abiotic factors
depending on depth
Freshwater ~V.S~ Marine Biome
Part 2
1. Human Influences
Human Influence
2 types of pollution that affect the aquatic biome
• threatened by pollution
1)Chemical pollution- the introduction of toxic
• farm runoff,
chemicals into the water. (oil spills, pesticides, bio• industrial
discharges,
hazardous
materials,
illegal dumping etc.)
• recreational boating,
2)Thermal pollution -A common cause of thermal
• andisfast-food
pollution
the use packaging.
of water as a coolant by power
plants and industrial manufacturers. When water used
as a coolant is returned to the natural environment
at a higher temperature, the change in
temperature decreases oxygen supply, and affects
ecosystem composition.
Independent Practice
Complete the flow map
3 things that cause pollution
3 effects of pollution on aquatic biome
Pollution