Ecology B/C

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

Postby gavinnupp » December 24th, 2016, 11:38 pm

Answer
Torpor is decreased activity in an animal, with a lowered body temperature and metabolism. Daily torpor is seen in many marsupials, rodents, and bats. However, long, seasonal periods of torpor can be considered hibernation, if it is during winter, or estivation, if it is during summer, in response to dry conditions and high temperatures. Many species of squirrel hibernate and many land snails estivate.
All correct, save a few minor inaccuracies. Estivation or hibernation is not in response to dry conditions or "high" temperatures; rather, it's an instinct meant to conserve energy in times expected to entail little food or extreme temperatures.

Besides that, all good. Your go.
According to Wikipedia, estivation is in response to hot and dry conditions (to avoid losing moisture or damage from temperatures) while hibernation occurs in warm-blooded animals when their isn't gonna be enough food.

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Re: Ecology B/C

Postby Zioly » December 25th, 2016, 1:55 pm

Answer
Torpor is decreased activity in an animal, with a lowered body temperature and metabolism. Daily torpor is seen in many marsupials, rodents, and bats. However, long, seasonal periods of torpor can be considered hibernation, if it is during winter, or estivation, if it is during summer, in response to dry conditions and high temperatures. Many species of squirrel hibernate and many land snails estivate.
All correct, save a few minor inaccuracies. Estivation or hibernation is not in response to dry conditions or "high" temperatures; rather, it's an instinct meant to conserve energy in times expected to entail little food or extreme temperatures.

Besides that, all good. Your go.
According to Wikipedia, estivation is in response to hot and dry conditions (to avoid losing moisture or damage from temperatures) while hibernation occurs in warm-blooded animals when their isn't gonna be enough food.
Correct, however all of that is interrelated. For example, the lack of food in the winter is due to the colder temperatures (as it's winter) and the drought is due to higher temperatures (as it's summer.) So, it's fair to say that both estivation and hibernation are states of prolonged torpor caused by (to some degree) extreme temperatures, and not only high temperatures, as chscioly put it.

That's how I viewed it, but I do see that most sources are saying hibernation as a response to lack of food (presumably ignoring temperature) and estivation as temp and precip. I'll put that down as something to look into later on the internet. I'm primarily referring to one source, so I might not have the most universal information right off the bat.

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Re: Ecology B/C

Postby Zioly » January 4th, 2017, 5:02 pm

Anyone can feel free to go. I'm itching to answer some questions. :)
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Re: Ecology B/C

Postby SenseiSushi » January 4th, 2017, 9:33 pm

Name at least two adaptations used by plants in the tundra.
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Re: Ecology B/C

Postby Zioly » January 5th, 2017, 7:49 am

Name at least two adaptations used by plants in the tundra.
Plants in the tundra grow close to the ground and in clumps to protect against the cold.

Plants are inactive for 9 months, to wait for the annual thaw of the active layer.

The roots of these plants are adapted to growing sideways, as they can't penetrate the permafrost below.
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Re: Ecology B/C

Postby LIPX3 » January 5th, 2017, 9:45 am

If a population has an annual growth rate of 5%, what is the doubling time?
Answer
15 years

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Re: Ecology B/C

Postby Zioly » January 5th, 2017, 3:13 pm

If a population has an annual growth rate of 5%, what is the doubling time?
Answer
15 years
Wow, I did not even see that question in the thread! Sorry about that chscioly! :D
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Re: Ecology B/C

Postby chscioly » January 5th, 2017, 4:28 pm

If a population has an annual growth rate of 5%, what is the doubling time?
Answer
15 years
Close, it should be around 14 years, depending on which way you found the answer.
If a population has an annual growth rate of 5%, what is the doubling time?
Answer
15 years
Wow, I did not even see that question in the thread! Sorry about that chscioly! :D
No worries! :)

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Re: Ecology B/C

Postby SenseiSushi » January 5th, 2017, 10:51 pm

Name at least two adaptations used by plants in the tundra.
Plants in the tundra grow close to the ground and in clumps to protect against the cold.

Plants are inactive for 9 months, to wait for the annual thaw of the active layer.

The roots of these plants are adapted to growing sideways, as they can't penetrate the permafrost below.
Correct! Another could be that they adapt to conducting photosynthesis in low temperature levels

In order to resolve the two ongoing threads, we can start with whoever provides a question first (Zioly or LIPX3) if that's alright.
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Re: Ecology B/C

Postby Zioly » January 6th, 2017, 4:37 pm

Name at least two adaptations used by plants in the tundra.
Plants in the tundra grow close to the ground and in clumps to protect against the cold.

Plants are inactive for 9 months, to wait for the annual thaw of the active layer.

The roots of these plants are adapted to growing sideways, as they can't penetrate the permafrost below.
Correct! Another could be that they adapt to conducting photosynthesis in low temperature levels

In order to resolve the two ongoing threads, we can start with whoever provides a question first (Zioly or LIPX3) if that's alright.
It was my mistake. Please, LIPX3 should be the one to go. Again, sorry about that everyone. :)
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Re: Ecology B/C

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

I'm not sure if anyone's on this thread anymore but still..
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

I'm not sure if anyone's on this thread anymore but still..
Explain the differences between alpha, beta, and gamma diversity.
Upon a quick Google search, I have discovered...
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.
Amensalism
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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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.
Amensalism
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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Bottle Rockets: 5th Ecology: 9th Hovercraft: 14th Scrambler: 29th (with a failed run too ;))
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