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Re: Ecology B/C

Posted: January 16th, 2017, 6:16 am
by radioactiveviolet
Explain the differences between alpha, beta, and gamma diversity.

Re: Ecology B/C

Posted: January 16th, 2017, 8:07 pm
by Zioly
radioactiveviolet wrote:
Explain the differences between alpha, beta, and gamma diversity.
Alpha diversity is the biodiversity of a certain habitat/ecosystem.
Gamma diversity is the biodiversity of a larger region that contains many habitats and ecosystems that alpha diversity could describe.
And beta diversity is a loosely-described stepping stone between the two, that compares and contrasts the biodiversities among habitats and ecosystems.

The terms were introduced by R. H. Whittaker to describe the spatial component of biodiversity.

Re: Ecology B/C

Posted: January 22nd, 2017, 11:16 am
by Zioly
Just gonna go... An easy one, but important regardless:

Define amensalism and give two examples of it.

Re: Ecology B/C

Posted: January 22nd, 2017, 6:14 pm
by sciduck
Zioly wrote:Just gonna go... An easy one, but important regardless:

Define amensalism and give two examples of it.
is a symbiotic relationship in which one organism suffers from negative effects while the other is unaffected. I think antibiosis could be an example and another could be... humans accidentally stepping on insects?

Re: Ecology B/C

Posted: January 22nd, 2017, 6:49 pm
by Zioly
sciduck wrote:
Zioly wrote:Just gonna go... An easy one, but important regardless:

Define amensalism and give two examples of it.
is a symbiotic relationship in which one organism suffers from negative effects while the other is unaffected. I think antibiosis could be an example and another could be... humans accidentally stepping on insects?
I'm not sure, but is antibiosis the opposite of symbiosis? So wouldn't amensalism be a type of antibiosis? And yes, I guess the humans/insects example could work, but I'm not sure if that fits the criteria as a close ecological relationship.

Still, good answer. Your go. Clarifications for the above are appreciated as well.

Re: Ecology B/C

Posted: January 23rd, 2017, 5:27 pm
by sciduck
Zioly wrote:
sciduck wrote:
Zioly wrote:Just gonna go... An easy one, but important regardless:

Define amensalism and give two examples of it.
is a symbiotic relationship in which one organism suffers from negative effects while the other is unaffected. I think antibiosis could be an example and another could be... humans accidentally stepping on insects?
I'm not sure, but is antibiosis the opposite of symbiosis? So wouldn't amensalism be a type of antibiosis? And yes, I guess the humans/insects example could work, but I'm not sure if that fits the criteria as a close ecological relationship.

Still, good answer. Your go. Clarifications for the above are appreciated as well.
According to google, antibiosis is "an antagonistic association between two organisms (especially microorganisms), in which one is adversely affected." So, yeah. I guess some antibiosis relationships would be amensalism, some not. The one I had in mind was [i]Penicillium[/i], which could probably grow w/ the presence of bacteria, but the penicillin it produces kills bacteria anyways. Bad for bacteria; eh for the fungus.
The human/insect one was just me guessing because I couldn't think of anything else. Do you have any more examples?
What affects species richness on an island?

Re: Ecology B/C

Posted: January 24th, 2017, 8:04 am
by me-myself_i
Different factors, like types of predators, types of prey, symbiotic relationships, and availability of resources

Re: Ecology B/C

Posted: January 30th, 2017, 5:38 pm
by sciduck
me-myself_i wrote:
Different factors, like types of predators, types of prey, symbiotic relationships, and availability of resources
I was thinking size of island and distance from mainland. But that's my blurry memory talking. Could I get a third opinion here?
Your turn.

Re: Ecology B/C

Posted: January 30th, 2017, 6:10 pm
by Uber
sciduck wrote:
me-myself_i wrote:
Different factors, like types of predators, types of prey, symbiotic relationships, and availability of resources
I was thinking size of island and distance from mainland. But that's my blurry memory talking. Could I get a third opinion here?
Your turn.
Those are the ones specific to islands, although the others me_myself_i listed would also affect species richness.

Re: Ecology B/C

Posted: January 31st, 2017, 7:21 am
by me-myself_i
how do you calculate biomass?