Ecosystem Portfolio
4th Period,

The Ocean Ecosystem

Biotic Factors

Dolphin, Shark, Sea Turtle, Jelly Fish, Sea Horse, Whale, Seal, Kelp, Sea Weed, and Guppies are all Biotic factors of the ocean

Abiotic Factors

Sand, Salt Water, Rocks, dead oranisms, and Sea Shells are all abiotic

Carrying Capacity

Carrying capacity  maximum population size of the species that the environment can sustain indefinitely, given the food, habitat ,water, shelter, and other necessities available in the environment.

Limiting Factors

A limiting factor in a system is an input or variable such that a small change in it from the present value would cause a non-negligible change in an output or other measure of the system.

Energy Roles

Decomposers - Bacteria & Fungi, gets energy from dead organisms

Consumer - Fish, gets energy from seaweed

Producer - Seaweed, gets energy from sun

Herbivore - A organism that only eats plants

Carnivore - A organism that only eats meat

Omnivore - A organism that eats both meat and plants

Scavenger - A organism who feeds off dead animals.

Food Webs/Chains

If you remove a population from the ocean then food source would be low and many animals would starve.

Trophic levels

Producers are at the bottom because every organism in the ecosystem relies on producers.


6CO2 + 6H2O ------> C6H12O6 + 6O2
(Photosynthesis formula)

Photosynthesis produces energy for a producer using sunlight.


the turning of all or part of an organism in a particular direction in response to an external stimulus.

Tropism helps plantssurvive by keeping it away from something that could harm it.


organisms that break down dead or decaying organisms

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