Hideyuki Doi and Helmut Hillebrand investigate how the sequence of species immigration affects food-chain length and whether the effect depends on productivity. Using a microcosm experiment including a copepod predator, ciliate species, and bacteria, they find that food chains are longest when the top predator is added last and that high productivity reduces food-chain length.
- Hideyuki Doi
- Helmut Hillebrand
