Richardson and Hussain are not complacent about the marshes' future, however. The researchers point out that water inflow is unlikely to be sufficient to maintain the encouraging trends in coming years. Fish catches remain poor, which deters many Marsh Arabs from returning to a traditional way of life. Further research is needed--but is not being done, say Richardson and Hussain--to determine how the marshes and agriculture can share water, to identify sites of toxins, and to study insecticide use by local fishermen.