Underwater Videographic Observations of Cultured Delta Smelt in Field Enclosures: Video Clips and Summary Data

All data is part of a pilot study aimed to observe Delta Smelt behavior within enclosures deployed in the wild. The enclosures used were designed by The California Department of Water Resources and UC Davis as part of their ongoing Delta Smelt enclosure deployment studies. Study 1: This data includes 16 17:43 minute videos of observations of Delta Smelt behavior in a floating field enclosure and an associated .csv file with data generated from the video clips. The videos were recorded using a Gopro Hero 4 Black digital action camera in a field enclosure located in a controlled agriculture pond at the University of California, Davis’ Center for Aquatic Biology and Aquaculture (CABA), Putah Creek Facility, Davis, California, between September 10 and 18, 2019. The data file contains information on the occurrence and duration of alarm behaviors exhibited by Delta Smelt. Four cameras were mounted to the interior of the enclosure at approximately mid height of the enclosure. Viewing area of the cameras extended from approximately the midpoint of the cage bottom to about halfway up the adjacent wall. A video began recording approximately 10 minutes prior to the simulated cage visit and recorded until battery failure resulting in 4, 17:43 minute videos per event. After 17:43 minutes the GoPro camera recorded footage as a separate video file, however they are still part of the same sampling event. Videos were recorded by one camera at a time and consecutive recordings alternated between cameras. Study 2: This data includes 59 10-min video clips of observations of Delta Smelt behavior in a floating field enclosure and an associated .csv file with data generated from the video clips. The videos were recorded using a Gopro Hero 4 Black digital action camera in a field enclosure located in the Sacramento River near Rio Vista, California, between October 12, 2019 and November 2, 2019. The data file contains information on the occurrence and duration of alarm behaviors exhibited by Delta Smelt and the occurrence, duration, and intensity of three types of disturbances: boat noises, noises associated with physical disturbances to the enclosure (e.g., clanking, rattling and banging of the enclosure), and vertical movements of the enclosure associated with wave activity. Two cameras were mounted to the interior of the enclosure at approximately mid height of the enclosure. Viewing area of the cameras extended from approximately the midpoint of the cage bottom to about halfway up the adjacent wall. A video clip of 10-min in duration was recorded at intervals of every 120 min between the hours of 09:00 to 18:00 from 12 October to 02 November 2019. Videos were recorded by one camera at a time and consecutive recordings alternated between cameras.

本数据集全部数据来自一项试点研究，旨在观测野外部署的围隔（enclosure）内三角洲胡瓜鱼（Delta Smelt）的行为表现。本次使用的围隔由加州水资源部（California Department of Water Resources）与加州大学戴维斯分校（University of California, Davis, 简称UC Davis）联合设计，作为二者持续开展的三角洲胡瓜鱼围隔部署研究的组成部分。

研究1：本数据集包含16段时长为17分43秒的野外浮动围隔内三角洲胡瓜鱼行为观测视频，以及一段由该视频片段生成的配套.csv格式数据文件。
视频录制于2019年9月10日至18日期间，地点位于加州大学戴维斯分校水生生物学与水产养殖中心（Center for Aquatic Biology and Aquaculture, CABA）普塔溪设施内的一处受控农业池塘的野外围隔中，录制设备为GoPro Hero 4 Black型数码运动相机。
该数据文件记录了三角洲胡瓜鱼所展现的警戒行为的发生频次与持续时长。
四台相机被安装于围隔内部约中部高度位置，单台相机的观测范围从围隔底部中点延伸至相邻侧壁约一半高度处。
每段视频均在模拟围隔到访前约10分钟启动录制，直至相机电池耗尽，因此每个采样事件可产出4段17分43秒的视频。当录制时长超过17分43秒后，GoPro相机会将后续录制内容保存为独立视频文件，但仍属于同一采样事件。视频采用单相机依次录制的模式，相邻录制任务将在四台相机间交替进行。

研究2：本数据集包含59段时长为10分钟的野外浮动围隔内三角洲胡瓜鱼行为观测视频，以及一段由该视频片段生成的配套.csv格式数据文件。
视频录制于2019年10月12日至11月2日期间，地点位于加州里奥维斯塔附近的萨克拉门托河野外围隔中，录制设备为GoPro Hero 4 Black型数码运动相机。
该数据文件除记录三角洲胡瓜鱼警戒行为的发生频次与持续时长外，还包含三类扰动的相关信息：发生情况、持续时长与强度，具体包括船体噪音、与围隔物理扰动相关的噪音（如围隔的碰撞、咔哒与晃动声），以及由波浪活动引发的围隔垂直运动。
两台相机被安装于围隔内部约中部高度位置，单台相机的观测范围从围隔底部中点延伸至相邻侧壁约一半高度处。
本次录制于2019年10月12日至11月2日的每日9:00至18:00时段内，以每120分钟的间隔录制一段10分钟时长的视频片段。视频采用单相机依次录制的模式，相邻录制任务将在两台相机间交替进行。