Posted: October 23rd, 2016, 2:48 pm
I think I read somewhere that R-selected are only found in disturbed areas and that K-selected species eventually become the climax community. Do you know if that's true?
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Re: Ecology B/C
Posted: October 23rd, 2016, 2:56 pm
Don't mind me, just adding in the subject line.
Re: Ecology B/C
Posted: October 23rd, 2016, 3:05 pm
K-selected organisms are more likely to be found in climax communities (like redwoods in the old growth forests of the West Coast) because they require stable conditions to grow whereas r-selected organisms can be found in almost any stage of ecological succession.tm-scioli wrote:I think I read somewhere that R-selected are only found in disturbed areas and that K-selected species eventually become the climax community. Do you know if that's true?
Re: Ecology B/C
Posted: October 23rd, 2016, 3:28 pm
Correct! Your go!Sensei_Sushi wrote:Zioly wrote:I'm very sorry if this isn't allowed, but seeing as Gavinupp hasn't responded yet and I'm itching to start studying...
1. Describe K-selective and r-selective organisms.
2. Give 2 examples of eachr-selective organisms are those that put the majority of their energy into rapid growth and reproduction while K-selective organisms place most of their energy into sustained growth and generally have fewer offspring. Mosquitos and frogs are examples of r-selective organisms whereas humans and elephants are examples of K-selective organisms.
Re: Ecology B/C
Posted: October 24th, 2016, 7:43 am
Which of the biogeochemical cycles is solely sedimentary?
Re: Ecology B/C
Posted: October 24th, 2016, 4:15 pm
I'm pretty sure phosphorus is. Is sulfur all sedimentary too?
Re: Ecology B/C
Posted: October 24th, 2016, 4:22 pm
Question for clarification: Are sedimentary cycles ones that involve only abiotic factors? Meaning, no bacteria/plants?Sensei_Sushi wrote:Which of the biogeochemical cycles is solely sedimentary?
Re: Ecology B/C
Posted: October 24th, 2016, 7:47 pm
I meant a cycle that takes place only in the solid state without any portion taking place in the atmosphere.Zioly wrote: Question for clarification: Are sedimentary cycles ones that involve only abiotic factors? Meaning, no bacteria/plants?
Re: Ecology B/C
Posted: October 25th, 2016, 5:45 pm
Oh! I get it now!Sensei_Sushi wrote:I meant a cycle that takes place only in the solid state without any portion taking place in the atmosphere.Zioly wrote: Question for clarification: Are sedimentary cycles ones that involve only abiotic factors? Meaning, no bacteria/plants?
So it would be Sulfur and phosphorus?
Re: Ecology B/C
Posted: October 25th, 2016, 6:05 pm
tm-scioli wrote:I'm pretty sure phosphorus is. Is sulfur all sedimentary too?
Zioly wrote:Sulfur and phosphorus?
Phosphorus is the correct answer. Sulfur isn't solely sedimentary as it is present as sulfur dioxide (a major source for acid rain that is formed from the combustion of coal) and is also emitted from volcanoes.