Questions tagged [food-web]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
1answer
61 views

In the context of heterotrophic theory of abiogenesis, what is an organism that eats other organisms called?

In the heterotrophic theory for the origin of life, we imagine a primordial soup that is rich in organic compounds and the first organisms emerge eating those compounds. Since these organic compounds ...
1
vote
1answer
82 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: ...
10
votes
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. ...
0
votes
0answers
18 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.
5
votes
2answers
439 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 ...
1
vote
0answers
44 views

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 ...
2
votes
2answers
81 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, ...
9
votes
2answers
3k 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 ...
-2
votes
1answer
1k 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 ...
5
votes
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 ...