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AQUATIC ECOSYSTEMDINA JOSENO.28B.Ed. NATURAL SCIENCEUCTE MUNATTUPUZHA Different Types of aquatic ecosystem Fresh water ecosystem Marine/oceanic ecosystemComponents in fresh water and marine ecosystem Abiotic components Biotic componentsFresh water abiotic components Water Minerals Soil Oxygen Carbon dioxide Sunlight etc.

Fresh water biotic components Producers Consumers DecomposersDifferent categories of consumer sPrimary consumers (herbivorous)Secondary consumers (carnivores & omnivores)Tertiary consumers (top carnivores)Parasites ,scavengers and saprobes.

Producers The Producers are the autotrophic elements chiefly green plants that prepare food by photosynthesis . Eg hydrilla ,pistia ,wolffia, eichernia, nymphae,azolla, etc. Consumers Those living members of ecosystem they consume the food synthesize by producers.Eg:larveof frogs,fishes,crabs,snakes, etc.DecomposersThe microbes active in the decay of dead organic matter of different forms of higher life.Eg:some bacteria, actinomycets,fungi,etc.Marine biotic components PRODUCERS : algae, diatomsCONSUMERS:protozoans,seashoreSmall crustacean and their eggs, fishes etc.DECOMPOSERS: some bacteria's

FOOD WEB OF MARINE ECOSYSTEMMarine abiotic components Temperature Salinity Gaseous content Soil, etc.

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