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Direct links and indirect links in food web

Discussion of the distribution and abundance of living organisms and how these properties are affected by interactions between the organisms and their environment

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Direct links and indirect links in food web

Postby SheffieldWednesdayFC » Tue Dec 08, 2009 5:33 am

I'd like to know how to tell the difference between an undirected link and directed link in a food web. Undirected means that only a feeding relationship exists, but directed link indicates a flow of energy and matter between the species. I'm trying to find an example of undirected link.

In the diagrams it shows direct link as A--->B and undirected as A----B
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Postby mith » Fri Dec 11, 2009 2:08 am

undirected links means there's a relationship but they're not sure how, at least that's the case for gene networks
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Postby JackBean » Sat Dec 12, 2009 9:13 am

In the networks, undirected link usually means something like both directional flow, but in food web I can't much imagine, what could it actually mean.
Do you have some example?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
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Postby jwalin » Sat Dec 12, 2009 9:49 am

oh that didn't come to my mind



both sound true
an example will help.
sure you cannot be. but try you must
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Re: Direct links and indirect links in food web

Postby BillPlant » Wed Oct 27, 2010 2:58 pm

An indirect link occurs when the influence of one species, the donor is transmitted through a second species, the transmitter, to a third species, the receiver.

We see this a lot in plants - one species will rely on another species to keep their mutual pollinators.

Hope this helps!
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