Ecology B/C

Test your knowledge of various Science Olympiad events.
radioactiveviolet
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Re: Ecology B/C

Postby radioactiveviolet » January 16th, 2017, 6:16 am

Explain the differences between alpha, beta, and gamma diversity.
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Re: Ecology B/C

Postby Zioly » January 16th, 2017, 8:07 pm

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.
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Re: Ecology B/C

Postby Zioly » January 22nd, 2017, 11:16 am

Just gonna go... An easy one, but important regardless:

Define amensalism and give two examples of it.
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Re: Ecology B/C

Postby sciduck » January 22nd, 2017, 6:14 pm

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?
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Zioly
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Re: Ecology B/C

Postby Zioly » January 22nd, 2017, 6:49 pm

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.
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Scrambler: 29th (with a failed run too  ;))
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...Yes, my profile picture is G2 apEX at the PGL Major Qual.  :lol:

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Re: Ecology B/C

Postby sciduck » January 23rd, 2017, 5:27 pm

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?
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Re: Ecology B/C

Postby me-myself_i » January 24th, 2017, 8:04 am

Different factors, like types of predators, types of prey, symbiotic relationships, and availability of resources
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sciduck
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Re: Ecology B/C

Postby sciduck » January 30th, 2017, 5:38 pm

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?
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Re: Ecology B/C

Postby Uber » January 30th, 2017, 6:10 pm

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.
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me-myself_i
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Re: Ecology B/C

Postby me-myself_i » January 31st, 2017, 7:21 am

how do you calculate biomass?
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