Download Terrestrial Ecosystem - Mrs. Jennings8th Grade ScienceMaus

By: Myla & Kaytia

2nd level Carnivores or Tertiary consumers.

1st level Carnivores or Secondary consumers.

Herbivores or Primary consumers.

Producers
(Another word for producers and consumers are Autotroph
and Heterotroph.)
•
•
•
Producer/Consumer: Grass/Rabbit
Predator/Prey: Wolf/Rabbit
Parasite/Host: Heart Worms/Dog
Commensalism:
Benefits one species without
the other species being
harmed.
They only
benefit one
species.
Parasitism:
Benefits one species, but
harms the other.
Has
Ben
efits
They
don’t
have
anyt
hing.
They don’t
harm the
other
species.
Mutualism:
Benefits both species.

The grass is eaten by the rabbit and the rabbit is eaten by the wolf.
Wolves
Rabbit
Grass
How does energy flow in an ecosystem?
• The grass is the producer which produces for the consumers.
• When the animals(consumers) such as: rabbits and deer come and eat the grass it
gives the animals energy and provides nutrients for them.
• The consumers are then eaten by the predators(lions, wolves…..etc. ) ,which gives the
predator the nutrients that is needed for its body as well.
• Then this same process happens all over again.
What are differences between a predator /prey relationship and a symbiotic
relationship?
• A predator/prey relationship often has one species that must die for the other to
benefit.
• In a symbiotic relationship there can be a time where both species can benefit, but in
a predator/prey type of relationship that can’t happen.
The choice of our organism is a Plant.
• Sunlight: A plant competes for sunlight because it needs the right amount of sunlight
in order for it to grow.
• Water: Plants compete for water because plants also need water to grow healthy and
properly.
• Soil Nutrients: Plants compete for soil nutrients because if the plant does not have
healthy soil then the plant won’t be as healthy and it wont have all the nutrients that
helps it grow.
• Living Space: Plants compete for living space because if it doesn’t have the right
amount of space then it will be crowded and wont have room to properly grow.
• Biotic Factors: Plants compete for resources because without the resources that are
needed for the plants it will most likely die before it even gets to grow.
A limiting factor is when it controls its own process and if it’s going to be
limited it has to be running out of that factor or low on that factor. For an
example: The sun could be a limiting factor; it would limit the plants growth.
Biotic Factors
Abiotic Factors
• Frogs, deer, eagle, raccoon, dragonfly, fishes, and plants.
• The log, sediments, and rock.
The Affect of Canadian
Squirrels Mating
Season Changing:
•
It would affect the squirrels
because the squirrels start
breeding season earlier to stay
on schedule with or according
to the season changes, and they
start gathering up food earlier
so they can be prepared when
winter season comes around.
What effect can pesticides have as it moves up the food chain from producers to top
predators?
• If pesticides were at the top of the food chain most likely the results would be a major
decrease in the animal population because pesticides means to destroy insects and
other organisms, so it would be harmful not only to the population of the animals,
but also to the animals, insects, and any other biotic factors or organisms.
How will human activities be harmful to the ocean?
• Human activities would be harmful to the ocean because 12% of pollution is from
spills from shipping, 10% from dumping waste right into the ocean, 44% is from
runoff, 33% is from pollutants on land, and 1% is from drilling for resources.
Humans also typically think that everything's okay or people are being dramatic, but
it is simply because we don’t care and some people think that it’s not going to affect
us, but when you really think about it, if we humans keep on treating our oceans this
way it’s also limiting our water supplies and if the fish die it maybe is limiting our
food supply as well.