Joel P Stokdyk

Cumulative antecedent precipitation data associated with well water samples collected in eastern Pennsylvania June-November 2017

The dataset includes aggregated precipitation data from a USGS rain gauge for specified 7- or 8-day time periods between May and November 2017. Daily precipitation measurements were summed to produce 7- or 8-day totals over the specified time period.

Categories: Data; Tags: Climatology, Precipitation, USGS Science Data Catalog (SDC)

This data set was collected to provide examples and aid in developing a standardized way of determining LOD and LOQ for eDNA assays and has 3 data files. GEDWG_LOD_DATA3.csv is raw qPCR data from multiple labs running multiple standards of known concentration for eDNA assays they regularly use. Comparison-Data.csv is the merged data output from running a generic LOD/LOQ calculator script multiple times with different LOD model settings. The generic LOD/LOQ calculator script is available at: https://github.com/cmerkes/qPCR_LOD_Calc, and details about the multiple settings used are commented in the analysis script available at: https://github.com/cmerkes/LOD_Analysis

Categories: Data; Tags: Environmental DNA, PCR, USGS Science Data Catalog (SDC), Whitney Genetics Laboratory, 555 Lester Avenue, Onalaska, Wisconsin, 54650, biota, All tags... detection, eDNA, invasive species, Fewer tags

Generic qPCR Limit of Detection (LOD) / Limit of Quantification (LOQ) calculator

This script is designed to analyze qPCR data for many replicates of known concentration DNA standards and determine the limit of detection (LoD) and limit of quantification (LoQ) for use in environmental DNA applications. It is written in the hopes that users with even limited knowledge of R will be able to successfully use the code to analyze their own data in the same way as other eDNA researchers to get similar results and automatically generate plots to visualize the data. The code has 5 lines for user input and requires a few simple restrictions on the input data, but after that the user should be able to run the code without any further coding or interventions. No R programming ability is required to run this...

Categories: Data

Code to analyze multi-lab LOD / LOQ study data

This code supports the manuscript "Reporting the limits of detection (LOD) and quantification (LOQ) for environmental DNA assays". The code analyzes outputs generated by another more generic code to analyze raw qPCR data for LOD and LOQ. This code requires the generic LOD / LOQ calculator script to read in and prepare the data, with additional script runs as described in comments within this code. We wrote this code to specifically analyze our data and generate the figures for the above-mentioned manuscript, however it could be adaptped by a savvy programmer to run similar analyses.