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Where on a food web would you typically find humans (near the bottom with the...
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You are only allowed to ask one or one related set of questions at a time so I edited down accordingly. A food web is the complex, cyclical series of relationships in a given ecosystem between organisms at different trophic levels that feed off each other as food. A food chain is a linear subset of a food web that starts with a producer and follows the levels of consumers that subsequently feed off the prior level until you reach the top consumer.
An example of a food chain in my area starts with wild weeds and grasses at the bottom of the food chain (producers). Deer feed off these grasses and humans kill and eat the deer. Humans are typically found at the very top of the food chain with the carnivores. Even in ecosystems like African savannas where animals like lions and cheetahs are faster and stronger than humans, only humans have the ability to hunt with weapons which puts them at the top. The major advantage of being part of a food web versus a linear food chain is the possibility for lateral movement. In other words, instead of being limited to one type of food on a food chain, humans can move along numerous food chains in a web and feed off numerous trophic levels (consumers, producers, and decomposers).
Posted by ncchemist on June 25, 2013 at 12:29 AM (Answer #1)
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