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Repository for Making Species Occurrence and Distribution maps for the Little Brown Bat (Myotis Lucifugus)

Calvin Cajayon, Olivia Garcia, Antonio Rioseco, Mairin Thorne

DOI Myotis Lucifugus - the Little Brown Bat!

🦇 Overview

The Little Brown Bat, Myotis Lucifugus has a widespread range in North America from Alaska-Canada forests. This species has had a history of a declining population due to the white-nose syndrome, a deadly novel fungal disease. It is listed under the Endangered Species Act as vulnerable. The US Fish and Wildlife Service is currently reviewing the status of the Little Brown Bat and hopes to maintain the longevity of the species.

🔗 Dependencies

The project uses the following additional R packages and versions (will be installed with file when needed): + Base + CoordinatedCleaner + datasets + dplyr + forcats + ggplot2 + graphics + grDevices + leaflet + lubridate + mapview + methods + purrr + readr + rgbif + stats + stringr + tibble + tidyr + tidyverse + usethis + utils + webshot2

📂 Structure

💾 Data

rawData.csv - uncleaned data downloaded from GBIF for Myotis Lucifugus
cleanedData.csv - cleaned data based off of rawData.csv limiting data to only living observations inside of the United States of America
cleanedDataOrAz.csv- cleaned to limit data points to the west coast of the United States of America to allow future SDM to run

🖼Images

Little_Brown_Myotis.JPG - image used in README

🗺️ Output

mlucifugusCurrentSdm.jpg - Current SDM
mlucifugusCurrentSdmOrAz.jpg - Current SDM limited to only the West Coast
mlucifugusFutureSdmOrAz.jpg - Future SDM limited to only the West Coast
occurrenceMapv2.png - Final version of the occurrence map

📜 Src

Mapping.R - Creating the occurrence map
Mlucifugus.R - Downloading data and cleaning data
MlucifugusSDM.R - Creating the SDM's

🏃 Running the code

run the code in the following order:
Mlucifugus.R
Mapping.R
MlucifugusSDM.R

🤔 Considerations

Although the Future SDM makes the next 50 years for the Little Brown Bat look good, the fungal disease White Nose Syndrome is endangering the Little Brown Bat and other species of bats across the countries.

In order to run these models we used JAVA, which ran out of memory during the future SDM due to the high volume of observation points. Therefore, we limited data points to Oregon and Arizona for our presentation to OR & AZ USFWS. This might contribute to potential inaccuracies in the model due to the low number of data points we were able to use. This could have led to the overly positive results seen in the future SDM. We also limited to current SDM to OR & AZ to match the future SDM.