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GENERAL BIOLOGY

What is Difference Between Food Chain And Food Web?

A food chain is a linear illustration that represents how nutrients and energy flow between one organism and the next in any particular ecosystem. Food chains start from the producers of an ecosystem, such as plants, to the organism that feeds on plants and to apex predators that have no natural predators. Examples of apex predators include bears and killer whales. In some food chains, food chains end up with detrivores such as mealybugs or even decomposing organisms such as bacteria. There are two types of food chains, namely a grazing food chain and a detrital food chain.

Difference Between Food Chain And Food Web

The atrophic network also called the consumer-resource system, is an intricate pattern that forms after food chains connect to show which species feed on each ecosystem. The food web has multiple producers and consumers. For example, a plant (a producer) is consumed by any number of consumers, such as gazelles. In turn, gazelles are devoured by any number of predators such as lions, cheetahs, hyenas, and others. Unlike a food chain that shows only one consumer of a particular organism, the food web has multiple consumers. In addition, in a food web, some species can perform multiple functions in the ecosystem and, therefore, is a more accurate description of an ecosystem.

Differences between a food chain and a food web

Individual and separate food chains are more likely to have instabilities in the ecosystem in the case of the food chain. However, for the food web, the ecosystem becomes much more stable due to the presence of multiple interconnected food chains.

For the food chain, there is a greater risk of disturbances in the ecosystem it represents. For example, in a food chain where the bear eats deer, that ecosystem will be extremely disturbed if something greatly reduces the number or destroys the entire deer population. On the other hand, the removal of an organism from the food web has very little involvement in the ecosystem as a whole. In the scenario where deer are removed, then the bear will still have a lot of food from the other organisms it eats, such as the gazelle.

Normally, in a food chain, there are trophic levels 4-6. Trophic levels refer to the hierarchical levels of consumption in a particular ecosystem. In comparison, the food web has multiple levels of trophic levels formed by multiple species.

Food chains limit an organism in terms of improving their competitiveness and adaptability because there is only one food source. On the other hand, the food web provides the perfect condition for an organism to adapt and be highly competitive. As a result, the chances of survival of the organism increase considerably.

In the case of a food chain, it is impossible for an organism to occupy multiple trophic levels. If in a food chain the grass devours the grass, then the grass will only be under the goat in the food chain. However, in a food web, it is possible for a plant to be at multiple trophic levels. For example, in a food web, the goat could die, decompose and its energy consumed by the grass.

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