FOREWORD The abundance and distribution of Pacific lamprey (Entosphenus tridentatus, formerly Lampetra tridentata) has significantly declined throughout its range over the past three decades. Many factors have contributed to this decline, including: impeded passage at dams and diversions, altered management of water flows and dewatering of stream reaches, dredging, chemical poisoning, poor ocean conditions, degraded water quality, disease, over-utilization, introduction and the establishment of non-native fishes, predation, and stream and floodplain degradation (Luzier et al 2009). Mitigation and restoration actions focused on habitat restoration of salmonid species within tributary habitats may also have contributed to this decline [...]
