They poured water into a glass aquarium, placed fish and a supply of live dophnia

| February 19, 2021 | education

They poured water into a glass aquarium, placed fish and a supply of live dophnia (organisms that feed on fish) 1) what will happen in this water area? 2) can this system be called ecological?

1) After a while, the fish will eat all the daphnia. If then the fish are regularly fed, then they will exist for a long time. If daphnia is not added to the water, the fish will die of hunger after some time.

2) No, such a system will not be an ecosystem. Firstly, the food chain is incorrect: there are no producers (algae) and decomposers (for example, bacteria that will decompose dead organisms), there is no exchange of matter and energy with the environment (circulation), and there are practically no various biotic and abiotic factors, but the anthropogenic factor has a great influence.

Such a system is very unstable and exists only as long as a person maintains it.



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