Publications by Matt Shank
WQI vs. Trout Biomass in PA
This document is intended to serve 2 purposes: An example of a data exercise using tidy coding workflow, including piping and featuring dplyr functionality Use real data to investigate the response of trout biomass (by species and overall) to water quality (PADEP WQI) First I’ll import data from excel documents in my working directory. ## rea...
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WQN QA
Quality Assurance of WQN data using R This is an attempt to QA WQN data to accomplish 4 steps in an automated fashion: Include flags for field chemistry – pH, DO, %DO, Temp, and SPC – that are out of range. Check if the sample has lab chemistry data included. Check if field chemistry was entered. If Reason Code = 002, then SAC021 should be p...
5681 sym R (6347 sym/8 pcs) 6 tbl
2020 Taxa Revision Analysis
Justification The latest edition of Merrit et al. (2019) characterizes recent macroinvertebrate taxonomic revisions, many of which could have implications for multi-metric indices used for assessment purposes by the Pennsylvania Department of Environmental Protection (PADEP). Through collaboration with central office and regional s...
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Monomeric vs. Dissolved Aluminum
Overview This document is intended to examine if dissolved Aluminum (test codes 01106A and 01106H) can be subsituted for monomeric Alumninum (test code 01106D). Monomeric Al is a dissolved species of aluminum that is filtered through a 0.1 micron filter. Dissolved aluminum concentrations are also derived after filtering...
4569 sym R (348 sym/1 pcs) 4 img 2 tbl
Identification of Streams Potentially Affected by Atmospheric Deposition in the Tuscarora Formation
Interactive Map of Streams Intersecting Tuscarora Formation This map shows NHD flowline segments that intersect the Tuscarora Formation. This geologic formation has been shown to be susceptible to atmospheric deposition due to extremely low buffering capacity of parent material (Kirby et al., 2008). Streams in drainages < 20 sq. mi....
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