Modeling data and R code for Chrysodeixis chalcites ecological niche

The golden twin-spot moth, Chrysodeixis chalcites Esper (Lepidoptera: Noctuidae), is a polyphagous, polyvoltine crop pest occurring natively from northern Europe to Mediterranean Africa and the Canary Islands. Larvae feed on a wide variety of naturally occurring plants as well as soybean and other legume crops, short staple cotton, tomato, potato, peppers, tobacco, and banana. Chrysodeixis chalcites has been recorded in agricultural lands in the Ontario peninsula in eastern Canada and in northern counties of Indiana, USA. Given the strong potential for C. chalcites to invade USA crop lands, it is important to identify environments most likely to sustain growing populations of this pest. Though C. chalcites is native to Europe and North Africa, it has invaded sub-Saharan Africa. Using occurrence data form the native and invaded ranges, and environmental predictors including bioclimatic conditions and human disturbance, we trained three ecological niche models to estimate an ensemble pred..., Collection and Sanitization of Occurrence Data
Occurrence records for Chrysodeixis chalcites were obtained through the Global Biodiversity Information Facility (GBIF 2022). All occurrence records in the dataset without latitude or longitude were removed. The native range of Chrysodeixis chalcites includes Europe, the Middle East, and North Africa (Sullivan and Molet 2007, CABI 2022). Occurrence points in sub-Saharan Africa represent invasive populations. On one hand, it has been suggested that invasive populations may not have fully occupied the entire landscape available to them, violating the assumption of species-environment equilibrium (Guisan and Thuiller 2005), which would warrant their exclusion. On the other hand, these populations may also have evolved to occupy additional environments not available to the native populations (niche extension), and therefore may broaden the predicted areas of environmental suitability (Ginal et al. 2022). Given the importance of early detection,..., , # Raw data, supplemental data, and output

[https://doi.org/10.5061/dryad.g1jwstqwv](https://doi.org/10.5061/dryad.g1jwstqwv)

## Description of the data and file structure

Raw and output data are compressed as zip files that will open into four folders, three including data and one including scripts (see next heading)

Folder: **Occurence_Dats** contains input data for analyses. 

* `Chrysodeixis_chalcites_home_clean.csv`: Occurrence data (lon and lat) for *Chrysodeixis chalcites* from the home range (Europe and the Mediterranean) with associated meta-data. Downloaded from [GBIF.org](https://doi.org/10.15468/dd.dyttjx) and sanitized by removing duplicates and points outside the invaded range, and by stratified sampling to counter collector bias.
* `Chrysodeixis_chalcites_invaded_clean.csv`: Occurrence data (lon and lat) for *Chrysodeixis chalcites* from the invaded range (subSaharan Africa) with associated meta-data. Downloaded from [GBIF.org](https://doi.org/10.15468/dd.dyttjx) and s...