Paramecium & Didinium Abundance

Raw data from the main experiment, pertaining to ciliate abundances over time. Observations were input by row. Column titles specify the following: "day" -- day of the experiment on which the observation was made; "repID" -- replicate label of the microcosm; "trtmt" -- treatment label of the microcosm; "prey" -- presence (yes) or absence (no) of Paramecium in the microcosm; "predator" -- presence (yes) or absence (no) of Didinium in the microcosm; "parasite" -- presence (yes) or absence (no) of Holospora in the microcosm; "species" -- the species to which the observation pertains ("PARA" -- Paramecium; "DIDI" -- Didinium); "vol" -- the volume sampled for the observation; "count" -- the number of individual present within the volume sampled.

本数据集为主实验的原始数据，内容为纤毛虫丰度随时间的动态变化情况。观测数据按行录入，各列标题的含义如下：
"day"：本次观测对应的实验天数；
"repID"：微宇宙（microcosm）培养体系的重复标识；
"trtmt"：微宇宙培养体系的处理组标识；
"prey"：微宇宙中猎物草履虫（Paramecium）的存在状态，取值为是（存在）或否（不存在）；
"predator"：微宇宙中捕食者栉毛虫（Didinium）的存在状态，取值为是（存在）或否（不存在）；
"parasite"：微宇宙中寄生菌全孢螺菌（Holospora）的存在状态，取值为是（存在）或否（不存在）；
"species"：本次观测对应的物种类别，其中"PARA"代表草履虫（Paramecium），"DIDI"代表栉毛虫（Didinium）；
"vol"：本次观测的采样体积；
"count"：对应采样体积内的个体总数。