Ecology B/C

[SenseiSushi]

Taigas have an average precipitation of between 15-100cm and an average temperature range of -65 to 70 degrees Fahrenheit. Deciduous forests have an average precipitation of between 75-150cm and an average temperature range of -20 to 90 degrees Fahrenheit.

[tm-scioli]

your turn

[SenseiSushi]

What is the largest reservoir of carbon on planet Earth?

[tm-scioli]

the crust

[SenseiSushi]

Thats it! Your turn.

[tm-scioli]

An invasive plant has taken over a plot of grassland on a ranch. The specie is spiny and allelopathic, but whenever the owner tills up the soil, sprays herbicides, or otherwise eliminates the problem, the plants that grow back are just other disturbance selected invasive species. Describe 2 possible solutions to the problem.

[gavinnupp]

1. Use prolonged germination tarps and glyphosate to eliminate all seeds within the soil, and reseed with a native seed mix
2. Set it on fire (controlled burns are a common method of control in praries)

[tm-scioli]

1. yup, I would just mention perennial plants (probably bunchgrasses)
2. that would usually work unless the other invasive species that grow back are fire resistant/resprout easily after fires your turn

[Zioly]

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 each

[SenseiSushi]

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 each

Answer (Click to Show Hidden Text)

r-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.