Direct links and indirect links in food web

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Direct links and indirect links in food web

Post by 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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Post by 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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Post by 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?

Cis or trans? That's what matters.

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Post by jwalin » Sat Dec 12, 2009 9:49 am

oh that didn't come to my mind

both sound true
an example will help.
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Re: Direct links and indirect links in food web

Post by 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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