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Data and R code for a zooplankton ethanol storage correction factor.

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2022-06-07
2022-06-24

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Title

Data and R code for a zooplankton ethanol storage correction factor.

Published Date

2023-04-05

Author Contact

Blechinger, Tristan
blech024@umn.edu

Type

Dataset
Field Study Data
Statistical Computing Software Code

Abstract

This data set contains fresh and ethanol fixed zooplankton samples collected from five Minnesota lakes during June 2022. The data were collected with five paired sites at each lake. The samples were filtered to remove detritus, phytoplankton, and predatory invertebrates. After filtering, each sample was split between fresh processing and ethanol storage. Ethanol storage samples remained in storage for approximately one month. Samples were sent to the UC-Davis Stable Isotope Facility for analysis. Stable isotope values in addition to lake name, DOW, and site of collection are included in the data file. Bayesian Hierarchical models were used to establish correction factors for ethanol storage. Statistical analysis was performed using the R package brms and model output can be found in respective .rds files. Details for each file can be found in the readme file.

Description

Data files contain code for fitting Bayesian Hierarchical models of zooplankton stable isotope variation due to ethanol fixation, which generates output of parameter estimates for predicting unaltered zooplankton isotope values. Model output and K-fold cross validation output is also included as .rds files. Code for generating figures is contained within the model .rmd file.

Referenced by

Blechinger, T., Link, D., Nelson, JKR., Hansen, GJA. Estimating ethanol correction factors for δ13C and δ15N isotopic signatures of freshwater zooplankton from multiple lakes. In preparation.

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Funding information

This project was supported by the United States Geological Survey in cooperation with the National Institutes for Water Resources (Project ID 2020MN105AIS) and the University of Minnesota’s Office of Undergraduate Research.

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Suggested citation

Blechinger, Tristan; Link, Denver; Nelson, Jenna KR; Hansen, Gretchen JA. (2023). Data and R code for a zooplankton ethanol storage correction factor.. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/kw5w-1584.

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