Long-Term Slough Crayfish (Procambarus fallax) Densities in the Florida Everglades from Throw Trap Sampling, Florida, USA, February 1996-December 2016

Densities of slough crayfish (Procambarus fallax) were collected throughout the Florida Everglades using 1-m2 throw-trapping samples from 1996–2016. Data were collected in four distinct regions within the Everglades (Shark River Slough, Taylor Slough, Water Conservation Area 3A and 3B) and during five seasonal periods each year. Each region consists of a series of sites, and each site consists of 3–5 sampling plots. The plot scale defines the unique sampling unit in the study, and 5–7 replicate throws were conducted at each plot. Corresponding hydrologic data were collected in conjunction with crayfish observations. These data describe antecedent average water depths, along with the duration of previous wet and dry conditions. Antecedent conditions were calculated by using both in situ measurements, as well as model output from the Everglades Depth Estimation Network (EDEN). Additional hydrologic data are provided in the LD_0 dataset, which describes daily depths measurements at sampling plots, as well as the length of antecedent complete drying events (LD_0). The length of antecedent dry conditions is assessed in R script FCE1267_01_LD_Depths, while the crayfish modeling code is described in FCE1267_02_Modeling_Code.

1996年至2016年，研究人员于佛罗里达大沼泽地（Florida Everglades）全域采用1平方米抛掷式采样器（1-m² throw-trapping）采集了沼泽螯虾（Procambarus fallax）的种群密度数据。本次数据采集覆盖大沼泽地内4个独立区域——鲨鱼河沼泽（Shark River Slough）、泰勒沼泽（Taylor Slough）、水资源保护区3A与3B（Water Conservation Area 3A and 3B），且每年分5个季节周期开展采样。每个区域包含一系列样点，每个样点下设3至5个采样样地。样地尺度为本研究的唯一采样单元，每个样地需完成5至7次重复抛掷采样。研究同步采集了与螯虾观测数据配套的水文数据，此类数据涵盖前期平均水深，以及此前干湿状况的持续时长。前期水文条件通过原位实测数据与大沼泽地水深估算网络（Everglades Depth Estimation Network, EDEN）的模型输出两种方式计算得到。LD_0数据集提供了额外的水文数据，该数据集包含采样样地的每日水深测量值，以及前期完全干涸事件的持续时长（LD_0）。前期干旱时长通过R脚本FCE1267_01_LD_Depths进行评估，而螯虾建模代码则在FCE1267_02_Modeling_Code中予以说明。