River metabolism before, during, and after the 2022 McKinney Fire debris flows on the Klamath River, California

Wildfires alter terrestrial subsidies to rivers, but effects to ecosystem metabolism and dissolved oxygen are not well known due to a paucity of monitoring during and immediately after wildfires. In summer 2022, a high-severity wildfire and heavy rains triggered debris flows into the Klamath River, California, affecting a downstream reach of river monitored by the Karuk Tribe Department of Natural Resources. We used high frequency dissolved oxygen and water temperature data from the Karuk Tribe to model ecosystem metabolism daily from May 2018 through December 2023 to document how the wildfire debris flow affected riverine ecosystem metabolism, turbidity, and dissolved oxygen levels. This data release includes daily metabolism estimates at the Seiad Valley monitoring site on the Klamath River, along with daily turbidity and minimum daily dissolved oxygen levels, which were used to assess the impacts of the wildfire debris flow on ecosystem metabolism and water quality in the 17 months following the wildfire. We also include a 6 day data set of high-frequency surface light, flow, turbidity, and dissolved oxygen data to illustrate the immediate, sub-daily effects of the wildfire debris flow on water quality.

野火会改变陆地向河流输送的补给物，但由于野火发生期间及灾后即刻的监测数据不足，其对河流生态系统代谢与溶解氧的影响尚未得到充分认知。2022年夏季，美国加利福尼亚州克拉马斯河（Klamath River）流域发生高强度野火，叠加强降雨引发泥石流冲入河道，波及了由克鲁族自然资源部（Karuk Tribe Department of Natural Resources）负责监测的下游河段。本研究依托该部门提供的高频溶解氧与水温监测数据，对2018年5月至2023年12月的河流生态系统代谢开展每日建模分析，以明晰此次野火泥石流对河流生态系统代谢、浊度及溶解氧水平的影响。本数据集包含克拉马斯河塞亚德谷（Seiad Valley）监测站点的每日生态系统代谢估算值，以及每日浊度与每日最低溶解氧浓度数据，用于评估野火泥石流发生后17个月内，其对河流生态系统代谢与水质的影响。此外，本数据集还包含一套为期6天的高频地表光照、流量、浊度与溶解氧监测数据，用于展示野火泥石流对水质产生的即刻、亚日级影响。