Trophic Cascade
- “did wolves change the rivers in yellowstone”
- “what is a trophic cascade”
- “yellowstone wolves story true”
- “how predators shape ecosystems”
:: COMPARE ::
Trophic cascadevsBottom-up control
The short answer
A trophic cascade is top-down: predators structure the levels beneath them. Bottom-up control runs the other way — nutrients, water and plant productivity set what the system can support. Yellowstone is the case study for why you can't assume top-down, since hydrology may outweigh the predator signal entirely.
Side by side
| Aspect | Trophic cascade | Bottom-up control |
|---|---|---|
| Direction | Top-down | Bottom-up |
| Driver | Predators | Water, nutrients |
| Yellowstone evidence | Weak | Plausible |
| Both real | Yes | Yes |
Which one you meant
Readers who land here meaning Trophic Cascade rather than Bottom-up control are usually searching for phrases like “did wolves change the rivers in yellowstone”, “what is a trophic cascade”, “yellowstone wolves story true”.
Read either one in full