Analysis of Limiting Factors Across the Life Cycle of Delta Smelt (Hypomesus transpacificus)

SCOTT A. HAMILTON and DENNIS D. MURPHY

The authors developed a life-cycle model from multiple factors influencing the success of the imperiled delta smelt. After reviewing previous models and analyses, the authors identified a set of factors that could help explain the erratic fluctuations in food availability, predation by introduced species, and entrainment. The analytical approach provides a transparent and intuitive framework to consider population trends, and has the potential to assist with the evaluation of proposed recovery measures.