Habitat Suitability Analysis of Larval Pacific Lamprey Habitat in the Columbia River Estuary

Pacific lamprey (Entosphenus tridentata) are native fish to the Columbia River Basin. Over the past 60 years, anthropogenic disturbances have contributed to a 95% decline of historical population numbers. Member-tribes of the Columbia River Inter-Tribal Fish Commission have acknowledged the importance of Pacific lamprey to the Columbia River ecosystem and expressed concern about the loss of an essential tribal cultural resource. As a result, the Columbia River Inter-Tribal Fish Commission created the Tribal Pacific Lamprey Restoration Plan to halt their decline, re-establish the species, and restore the population to sustainable, harvestable levels throughout their historical range. Limited knowledge about the movement and preferred habitat of larval Pacific lamprey, such as optimal habitat conditions, demographic information, and species resilience, results in challenges to monitor and protect the species. Pacific lamprey is known to use the mainstem Columbia River to migrate between...太平洋七鳃鳗（Pacific lamprey，学名*Entosphenus tridentata*）是哥伦比亚河流域的本土鱼类。过去六十年来，人为干扰已导致其种群数量较历史水平下降95%。哥伦比亚河跨部落渔业委员会（Columbia River Inter-Tribal Fish Commission）的成员部落认可太平洋七鳃鳗对哥伦比亚河流域生态系统的重要性，并对这一至关重要的部落文化资源的流失表示担忧。为此，该委员会制定了《部落太平洋七鳃鳗恢复计划》，旨在遏制其种群衰退、恢复该物种种群，并在其历史分布范围内将种群数量恢复至可持续、可捕捞的水平。 目前学界对太平洋七鳃鳗幼体的移动模式、偏好栖息环境（如最佳栖息条件）、种群人口统计数据以及物种恢复力的了解有限，这给该物种的监测与保护工作带来了挑战。已知太平洋七鳃鳗会借助哥伦比亚河干流进行跨区域迁徙……