Interagency Ecological Program: USFWS Delta Boat Electrofishing Survey, 2018-2023

The United States Fish and Wildlife Service's (USFWS) Delta Boat Electrofishing Survey was designed to estimate spatial and temporal trends in abundance, occupancy, capture probabilities, and related environmental drivers of fish assemblages across nearshore littoral habitats within the Sacramento-San Joaquin River Delta. The USFWS Lodi Field Office in collaboration with the United States Geological Survey developed the survey in 2018 to expand fish monitoring and inferences in nearshore habitats not monitored by long-term USFWS beach seine surveys within the San Francisco Estuary. The survey uses a robust statistical framework, including a stratified random sampling design and segmented transects that act as spatial replicates for occupancy modeling. For more information on the Lodi U.S. Fish and Wildlife Office: https://www.fws.gov/lodi/美国鱼类及野生动物管理局（United States Fish and Wildlife Service，缩写USFWS）发起的三角洲船只电渔调查，旨在针对萨克拉门托-圣华金河三角洲的近岸沿岸生境，估算鱼类群落的丰度、占用率、捕获概率及其相关环境驱动因子的时空变化趋势。该调查由USFWS洛迪野外办公室与美国地质调查局合作开展，于2018年启动，用以拓展旧金山河口内USFWS长期海滩围网调查未覆盖的近岸生境的鱼类监测与生态推断工作。本次调查采用稳健统计框架，涵盖分层随机抽样设计与分段样带方案，其中分段样带可作为占用模型分析的空间重复样本。如需了解美国鱼类及野生动物管理局洛迪办公室的更多信息，请访问：https://www.fws.gov/lodi/