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Jizera (Grassland)
By: Jorge Quintana P5
Definitions Of Biotic
Factors
 Producers: Organisms that are capable to make their
own food only plants can do it with the help of
photosynthesis.
 Consumers: Organisms that eat producers to get
energy from them.
 Decomposers: Organisms that eat decaying matter.
 Scavengers: Organisms that eat only dead animals.
Biotic Factors (Producers)
 Grass (Poaceae)
 Acacia Tree (Acacia Torbillis)
Biotic Factor (Consumers)
 1st level Consumers
 Humans (Homo Sapiens)
· Zebra (Eqqus Quagga)
· Hyena (Hyaenidae)
· Tick (Ixodes Scapolaris)
· Baboon (Papio)
· Bacteria (Helicobacter
Pylori)
· Giraffe (Giraffa
Lamelopardalis)
3rd level Consumers
· Impala (Aepyceros Melampus)
· Leopard (Panthera Pardus)
 2nd level Consumers
4th level Consumers
· Cheetah (Acinoyx Jubatus)
· Lion (Pànthera Leo)
Consumers
Biotic Factors
(Decomposers)
 Mushrooms (Agarieus Bisporus)
 Dung Beetles (Phanaeus Vindex MacLachlan)
 Termites (Termitoidae)
Biotic Factors (Scavengers)
 Vultures (Cathartes Aura)
Types of Interactions
 Predation: When one organism kills another for
food.
 Competition: Is the struggle between organisms to
stay alive.
 Symbiosis: A close relationship is called symbiosis.
At least one organism is benefitted.
Predation
 As I said predation is when an organisms kills for
food. In the grassland biome we will have three or
four predation relationships though I will show you
only 2.
 1st example of predation is when a Lion kills the
Giraffe for food.
 2nd example of predation is when the Cheetah kills
the Zebra for food.
Competition
 Well competition is the struggle of 2 organisms for
something. Well we too need this in our biome and
we have that I will show you one example or
multiple so you know we have competition going
on right here.
 1st example of competition is when the Cheetah
competes vs.. the Hyena for the Impala and
Zebra.(food)
Symbiosis Relationships
 There are only three types of symbiosis
relationships and they are these.
 Mutualism: When both species are benefitted.
 Commensalism: When one species obtains food or
shelter from the other species and the other species
is not harmed or benefitted.
 Parasitism: When one of the species is harmed.
Organism that is helped is called parasite and the
one being harmed is called the host.
Examples of Symbiosis
Relationships
 Mutualism: An example of mutualism in the grassland
biome is the Zebra and the Bacteria because the bacteria
helps break down food for the zebra and the bacteria
gets food and the zebra digests more easily.
 Commensalism: An example of commensalism in our
biome is between the Acacia and the Baboon because the
baboon sleeps on the acacia tree and is benefited and the
acacia tree does not mind.
 Parasitism: An example of parasitism is the Giraffe and
the Tick because the tick drinks blood from the giraffe
and is benefitted and the giraffe is harmed and is not
benefitted.
Info of the Grassland
Biome on Outer Space
Day length: 25 hours
Year Length: 370 days
Precipitation: 600mm – 2,500mm
Temperature: -5° - 20°C
Sunlight: Over 80% of sunlight each day
Soil: Very porous, very thin layer of humus and is very
fertile.
Types of landforms: Very few trees, placid environment
(humid), rivers, flowers, ,mountains, slopes.
Food Web
Top Level Consumers
Humans
Decomposers/S
Dung
Mushrooms
Beetles
Termites rs
4th level consumer
Lion
Vultures
Leopard
Hyen
a
Cheetah
Bacteria
Ticks
Impala
Baboon
Producers
3rd level consumer
Zebra
Grass
Giraffe
Acacia
Tree
2nd level consumers
1st level consumers
Food Web (Pictures)
Top Level Consumers
4th level consumer
Decomposers/Sca
rs
3rd level consumer
2nd level consumers
1st level consumers
Producers
Sources
 http://www.esc9.net/pages/uploaded_files/africa
n%20grassland.pdf
 Google Images
 Science Notebook
 Mr. Nagy
 http://southwest.library.arizona.edu/azso/back.1_
div.3.html