Look at the diagram above of a marine food web. what might happen to this ecosystem if the non-native populations of smelt and alewife increase greatly? question 1 options: 1.the smelt will eat the alewife. 2.the salmon will starve. 3.the smelt and alewife may out-compete the native fish by consuming all of the zooplankton. 4.nothing should happen to this ecosystem if the populations of smelt and alewife increase greatly.