Ecology B/C

[dreaminghigh]

Can anyone simplify podzolization? It was on an invitational I went to, and I asked some people who had taken the test and no one knew. My biology teacher had no clue either.

[quizbowl]

Can anyone simplify podzolization? It was on an invitational I went to, and I asked some people who had taken the test and no one knew. My biology teacher had no clue either.

According to wikipedia, its similar to the process of leaching, but with Al and Fe ions as well, with a lot of the B horizon getting bleached

[dreaminghigh]

According to wikipedia, its similar to the process of leaching, but with Al and Fe ions as well, with a lot of the B horizon getting bleached

Ohh really? Thank you(: Because when I was reading that page, I got totally confused.

[Starapollo1]

Can anyone simplify podzolization? It was on an invitational I went to, and I asked some people who had taken the test and no one knew. My biology teacher had no clue either.

Okay so the past like 3 invitationals I've been to (even when I haven't competed in ecology) the ecology tests always have like two or three completely random words that must have been taken out of a textbook! To be fair the question about Teratogens (which we did manage to get right) can be found in an ecology dictionary, but what the heck! You guys had 'podzolization' is this random copying and pasting from ecology dictionaries happening everywhere!

P.S. if someone has a logical explanation for this or there's something in the rules about it that I missed please enlighten me. Seriously please do!!! Our teams main Ecology girl has gotten so frustrated she's reading and ecology dictionary!!!! ....

[HannahD413]

In the New Caney Ecology Div B 2010 test, number 6 is confusing me. It says:

6. All of the following are density-independent limiting factors except:
a. disease
b. food supplies
c. droughts
d. waste products

The answer given on the answer key is C, but I thought disease, food, supplies, and waste products were density-dependent because the larger the population was, the more of a problem it was. And I thought natural disasters were density-independent limiting factors.

Am I misunderstanding the question, incorrect in my reasoning, or is the question mistaken?

[dreaminghigh]

Okay so the past like 3 invitationals I've been to (even when I haven't competed in ecology) the ecology tests always have like two or three completely random words that must have been taken out of a textbook! To be fair the question about Teratogens (which we did manage to get right) can be found in an ecology dictionary, but what the heck! You guys had 'podzolization' is this random copying and pasting from ecology dictionaries happening everywhere!

P.S. if someone has a logical explanation for this or there's something in the rules about it that I missed please enlighten me. Seriously please do!!! Our teams main Ecology girl has gotten so frustrated she's reading and ecology dictionary!!!! ....

Ohh wow! Really? They did that for the tie breakers which was worth about 3 points. (we got 0 since we just made up a random defination that wasn't even close.) lol

[germinator]

In the New Caney Ecology Div B 2010 test, number 6 is confusing me. It says:

6. All of the following are density-independent limiting factors except:
a. disease
b. food supplies
c. droughts
d. waste products

The answer given on the answer key is C, but I thought disease, food, supplies, and waste products were density-dependent because the larger the population was, the more of a problem it was. And I thought natural disasters were density-independent limiting factors.

Am I misunderstanding the question, incorrect in my reasoning, or is the question mistaken?

no the question is correct
http://wiki.answers.com/Q/What_is_a_den ... ing_factor

[HannahD413]

In the New Caney Ecology Div B 2010 test, number 6 is confusing me. It says:

6. All of the following are density-independent limiting factors except:
a. disease
b. food supplies
c. droughts
d. waste products

The answer given on the answer key is C, but I thought disease, food, supplies, and waste products were density-dependent because the larger the population was, the more of a problem it was. And I thought natural disasters were density-independent limiting factors.

Am I misunderstanding the question, incorrect in my reasoning, or is the question mistaken?

no the question is correct
http://wiki.answers.com/Q/What_is_a_den ... ing_factor

http://www.gov.mb.ca/conservation/sustain/limfac.pdf
Lists competition for food supplies and disease as density dependent factors and natural disaster as independent factors. Are you saying that disease, food supplies, and waste products are density-independent?

[Starapollo1]

[quote="HannahD413"]In the New Caney Ecology Div B 2010 test, number 6 is confusing me. It says:
[quote]6. All of the following are density-independent limiting factors except:
a. disease
b. food supplies
c. droughts
d. waste products

I believe the question is misworded. On a test I put up (that a friend of mine helped me write) we put up a question IDENTICAL to this only with worded this way:
All of the following are density-DEPENDENT limiting factors except:
a. disease
b. food supplies
c. droughts
d. waste products

The answer is C because a drought is a natural disaster (usually speaking) thus the populations density has no affect on its occurence. the liklihood of disease increases with a higher density so it is density dependant. Food supplies are obviously dependant on how many organisms are in a population. And waste products are again dependant upon the population densities. The question states that they are all density dependant EXCEPT, thus droughts, which typicially are not influenced by the density of organisms is the right answer. NOW to be fair, a drought would lead to a decreased supply in water which then could possibly be considered a food supplies, thus a density dependant item but lets not be that picky!

[HannahD413]

It would make much more sense that way. Thanks.