Questions tagged [food-web]

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1answer
65 views

Is cannibalism part of mainstream food-chain?

There are some species who sometimes eat their own kinds. Is this cannibalism considered their regular food? Do the link in food-chain for those animals make a loop on themselves? Can this statement: ...
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0answers
13 views

Do ants consume house lizard excreta?

There are a lot of ants in our house and recently i saw some ants drag some lizard excreta. So i was wondering do ants consume lizard excreta. These are small house lizards.
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0answers
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Why are there so many species of large predator on the African savanna?

On the tropical grasslands of Africa, there are loads of large carnivores. Lions, cheetahs, leopards, hyenas and wild dogs are all found, sometimes, in the same place. I was wondering, why is it that ...
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2answers
79 views

Recommendation for book about soil and their food webs

Are there any de facto books for studying soil biology; specifically with details in the context of food webs? I am trying to teach myself about the subject and would like a good introductory book, ...
5
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2answers
389 views

How do communities relate to food webs?

I am a biology student who has just completed drawing a food web for class. As I was making it, I learned that a food web is the sum of all feeding interactions. My teacher associated food webs with ...
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1answer
898 views

Based on this diagram, how do you deduce the keystone species? [closed]

How would you figure out what the keystone species is in the following textbook question? (questions 1 and 2 at the bottom of the image) Based on my knowledge, a keystone species helps to maintain ...
9
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2answers
2k views

Why do carnivores evolve?

If humans can live without consuming other animals, then why do we do it? From a biological point of view, why do we eat meat? I would also extend the question to other animals because many animals ...
10
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3answers
4k views

Are there species that occupy several roles in the food hierarchy?

Are there species that occupy several roles in the food hierarchy? By role, I am referring to producer, primary consumer, secondary consumer, tertiary consumer, quaternary consumer and so on. ...
5
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1answer
2k views

How can omnivores be in more than one trophic level?

I'm learning about the ecosystem and its relation to organisms, So organisms in a food chain can be put from producers to tertiary organisms. I just don't get the part where an organism can be labeled ...