Ecosystem Portfolio

Marine Ecosystem

This is a Marine Ecosystem

Marine ecosystems are the biggest ecosystems, which cover around 71% of Earth's surface and contain 97% of out planet's water. Water in Marine ecosystems features in high amounts minerals and salts dissolved in them. The different divisions of the marine ecosystem are.

Most ocean organisms are aerobic, meaning that they are oxygen-breathers. Some, like marine mammals and turtles, are air-breathers just like humans. Others, like fish, crustaceans, mollusks, and worms,sharks,are water-breathers and get their needed oxygen from the water. Most of the oxygen in the ocean is produced by algae and phytoplankton during photosynthesis. Some marine organisms, like worms, snails, and crabs, bury themselves in the mud or sand and don’t require as much oxygen as other organisms, like fastswimming fish.





Carrying Capacity and changes in Populations

The marine ecosytem has tons of different animals that it is what makes it so different it changes every single time when it is winter they all migrate/swim to some where summer they stay there spring ocean flowers bloom so more food for every one fall they all stay inside and survive off leftovers.

Definiton-the number or quanity of people or things that can be conveyed or held by a vechicle or container.

Food,space,each other,shelter.

They change cause they need to adapt to their enviorment so they dont die off.

Limiting Factors and Predator/Prey Relationships

Definiton-limiting factors are something that limit the ecosystem from doing something like if a boulder was in the way of a lake they would need to find away around it or go somewhere differnet.

Both abiotic and biotic factors determine both where an organism can live and how much a population can grow. A limiting factor is a factor that restricts the size of a population from reaching its full potential.

The amount of food & water in a habitat is an example of a limiting factor. Other factors include geographical space, predation, climate, competition (for prey, food, mates) etc. An example of a limiting factor is sunlight in the rainforest, where growth is limited to all plants in the understory unless more light becomes available.

A Shark and Seal the seal could swim to land where the shark would not be able to go due of it's water-breathing with that is a limitation on prey may escape the predtor.

Energy Roles

Herbivores-a herbivore is an animal that eats plants for food, A cow.

Few sea turtles are truly herbivorous; most eat jellyfish, sponges, corals, squid and other organisms.

Carinvores-is an animal that eats other animals for food,aligator.


Sea animal related to whales: an intelligent sea mammal cetacean that resembles a large fish and has teeth and a snout similar to a beak. Found almost worldwide, dolphins are related to whales, but are smaller.

Omnivore-is something that eats plants and animals like an bear.

Proudcer-is a plant that makes food like trees.

Decomposers-are something eat of dead living plants and animals.Mushroom

scavengers-are something that eats the dead carcas of an animal.vulture

Food Chains and Food Webs

Food Webs are more realistic the food chains because it gives a more variety of animals in that ecosystem instead of a food chain which only gives a few.

Removing a population is saying you move one thing like a cricket from a food chain.

Trophic Levels and Energy Pyramids

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. From the bottom-up.

producers are at the bottom due to the make the food and energy to start the process and carry on the energy throught out the pyramid.

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