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The Formation of Marine Ecosystem, Functions of Producers, Types of…
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Functions of Producers
Primary producers harness the energy from the sun or from chemical reactions and fix inorganic carbon in the form of carbohydrates.
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Types of Consumers
Primary Consumers
The second level in the food chain, feeding off of producers like phytoplankton.
Crab, a primary consumer eats seaweed. 
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Secondary consumers
The third level in the food chain and they eat primary consumers. In these the animals are carnivorous.
Barracuda, a secondary consumer lives in oceans.
Tertiary consumers
The fourth level in the food chain. Tertiary consumers are snappers, sharks and dolphins. They are at the top of the food chain.
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Types of Producers
An organism obtaining energy from sunlight as its source of energy to convert inorganic materials into organic materials for use in cellular functions such as biosynthesis and respiration.
Plants
Algae
It is a large and diverse group of simple, typically autotrophic organisms. They range from unicellular to multicellular forms. They are photosynthetic like plants.
Seaweed is a kind of algae.
Seagrass
Cyanobacteria are an ancient group of photosynthetic microbes that occur in waters and that can have major effects on the water quality.
Phytoplankton are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater ecosystems.
Diatomare the most common phytoplankton.They are important oxygen producers
An organism (typically a bacterium or a protozoan) that obtains energy through chemosynthesis rather than by photosynthesis
Nitrifying bacteria
They can turn the inorganic matter into the organic matter.
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Functions of Decomposers
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They turn the organic matter into basic nutrients, which feed plant life and microscopic animals in the ocean.
Energy is not recycled in ecosystems and marine ecosystem requires a continuous input of energy to sustain it.
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