Distribution and habitat use of juvenile steelhead and other fishes of the lower Feather River

Understanding how fish presence is related to habitat features is useful in restoration planning and monitoring as better information about how fish use habitat may lead to more impactful restoration projects. The California Department of Water Resources (DWR), conducted a two-year study of microhabitat and mesohabitat in Feather River. The goal of this study was to identify relationships between habitat conditions (depth, substrate, velocity, and cover) and where juvenile Chinook salmon and steelhead occur. Snorkel surveys were conducted monthly March through August in 2001 and 2002 across 29 different sites, which were selected at random (13 in Low Flow Channel, and 16 in High Flow Channel). Each sampling section covered an area 25 meters long by 4 meters wide, running parallel to riverbank. These data were published to support the Healthy Rivers and Landscapes Science Program.厘清鱼类存在与栖息地特征间的关联，可为栖息地修复规划与监测工作提供重要支撑；明晰鱼类对栖息地的利用模式，有助于提升修复工程的实施成效。加利福尼亚州水资源部（California Department of Water Resources, DWR）在菲瑟河（Feather River）开展了为期两年的微生境（microhabitat）与中生生境（mesohabitat）调查研究。本研究的核心目标为厘清栖息地条件（水深、底质、流速与遮蔽物）与幼年金帝王鲑（juvenile Chinook salmon）及钢头鳟（steelhead）的栖息分布之间的关联。研究于2001年与2002年的3月至8月期间，每月开展浮潜调查（snorkel surveys），共覆盖29个随机选取的采样点，其中低流量河道（Low Flow Channel）13个、高流量河道（High Flow Channel）16个。每个采样断面的布设范围为长25米、宽4米的区域，且与河岸平行延伸。本数据集已公开发布，以支撑健康河流与景观科学计划（Healthy Rivers and Landscapes Science Program）的相关工作。