Selected Publications

Utilizing data from a long-term monitoring program and land cover data sets, we modeled the probability of occupancy and colonization for 38 bird Species of Greatest Conservation Need (SGCN) in the robust design occupancy modeling framework, and used results from the best models to predict occupancy and colonization on the Iowa landscape.
In PLOS ONE, 2017

Recent & Upcoming Talks

Applications of R Shiny to Evaluate and Improve Total Survey Quality
Wed, Oct 24, 2018 12:10 PM
Overlay Spatial Objects in R
Thu, Oct 26, 2017 4:10 PM
Shiny Application to Iowa DNR MSIM-SGCN Modeling
Fri, Sep 23, 2016 2:10 PM

Recent Posts

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Here is my solution to one of the 2018 google summer of code project tests. The source code and output are available at


Shiny Apps

Cropland Data Layer & Soil Survey

This is a shiny app tool designed for interacting with Cropland Data Layer and NRCS Soil Survey Data.

ISA On-Farm Trial Summarization Tool

Designed to provide individual and across field summaries of on-farm trials conducted by farmers working with the Iowa Soybean Association.

Iowa DNR MSIM - SGCN Modeling

Predictive occurrence maps for Species of Greatest Conservation Need (SGCN) using data from the MSIM program.

Overlay Example - ggmap

An example of overlaying spatial polygons and raster images using R.

Systematic Sampling Example

An example for Stat421 Lab05.