ecosystem portfolio
2 period


  • 1.water                                                                                                                                   2.temperature                                                                                                                            3.depth                                                                                                                                         4.sand                                                                                                                                           5.turbidity                                                                                                                                                                                                                                                                                                                                                                                      



1.seaweed                                                                                                                                                 2.turtle                                                                                                                                                     3. algae                                                                                                                                                     4.krill                                                                                                                                                                 




Carrying capacity

Carrying capacity isa maximum ps pulsation size of the species that the environment can sustain indefinitely.

You need water to survive

limiting factor

Biology. an environment factor that tends to limit population size

example: 10 rabbits may live in a habitat that has enough water, cover and space to support 20 rabbits, but if there is only enough food for ten rabbits, the population will not grow any larger.

Coral reefs are the most eye-catching ecosystems in the ocean. What many do not know is that the majestic, colorful coral not only attracts the human eye, but some of the deadliest predators in the ocean. Coral acts as a home for many different kinds of sea life, but beware of the predators that lie within!


producer: An autotrophic organism that serves as a source of food for other organisms in a food chain       Ex:green plant

consumer:  Herbivores that feed on green plants and detritivores that feed on decaying matter are called primary consumers       Ex. fish

decomposer:  an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.     Ex. bacteria

Energy roles

Producer: is an organism, either a green plant or bacterium, which is part of the first level of a food chain. Ex. seaweed

Herbivore:an animal that feeds on plants                                                                                         Ex. small fish

Omnivore: an animal or person that eats food of both plant and animal origin                        Ex. dolphins


Carnivore: an animal that feeds on flesh                                                                                           Ex. shark

Decomposers: an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.      Ex.bacteria

Scavenger: an animal that feeds on carrion, dead plant material, or refuse                             Ex crab

Producer Explanation: One that produces, especially a person or organization that produces goods or services for sale     Ex.

Cells manage a wide range of functions in their tiny package — growing, moving, housekeeping, and so on — and most of those functions require energy.

Because they are the base of our food chain, primary consumers such
as herbivores (plant eaters) eat producers when secondary consumers
(omnivores) eat those and finally tertiary consumers eat
those.tertiary consumers consist of people,bears,etc.

Food chains and food web

Food chains are linear depictions of energy flow, while food webs show the multiple interactions among the different types of organisms. Food webs are generally a more realistic portrayal of the energy flow in the system. After all, most organisms eat more than one type of food and can be eaten by more than one type of predator.

Food web: sun<zooplankton<small fish<mackerel<mahi mahi<large shark

If we removed the small fish then all of the zooplanktons wouldn't have fishes to eat

Trophic levels and energy pyramids

Energy pyramid: An energy pyramid is a graphical model of energy flow in a community. The different levels represent different groups of organisms that might compose a food chain. An apex predator, also known as an alpha predator, super predator, top predator or top-level predator, is a predator residing at the top of a food chain on which no other creatures predate.[n 1][1][2] Apex predators are usually defined in terms of trophic dynamics, meaning that apex-predator species occupy the highest trophic level or levels and play a crucial role in maintaining the health of their ecosystems. One study of marine food webs defined apex predators as greater than trophic level four.[3] The apex predator concept is commonly applied in wildlife management, conservation and ecotourism


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