Fluctuation of ecological niches and geographic range shifts along chile pepper's domestication gradient

Domestication is an ongoing well-described process. However, while many have stud- ied the changes domestication causes in plant genetics, few have explored its impact on the portion of the geographic landscape in which the plants exist. Therefore, the goal of this study was to understand how the process of domestication changed the geographic space suitable for chile pepper (Capsicum annuum) in its center of origin (domestication). C. annuum is a major crop species globally whose center of domes- tication, Mexico, has been well-studied. It provides a unique opportunity to explore the degree to which ranges of different domestication classes diverged and how these ranges might be altered by climate change. To this end, we created ecological niche models for four domestication classes (wild, semiwild, landrace, modern cultivar) based on present climate and future climate scenarios for 2050, 2070, and 2090. Considering present environment, we found substantial overlap in the geographic ni..., # Data collection #
Field trips by team members
Biblliographic data point occurences
Publicly available databases
# Data processing #
Principal Components Analyses
Ecological Niche Modelling in Maxent
Projection of ENM for future climate change, maxent.jar Maximum Entropy Modeling of Species Geographic Distributions version 3.4.0
R version 4.0.2 (2020-06-22)
 
Main R packages: 
\"sp\" version 1.4-4
\"rgdal\" Geospatial Data Abstraction Library version: 1.5-19
\"raster\" version 3.4-5 
\"FactoMineR\" version 2.3
\"corrplot\" version 0.84
\"factoInvestigate\" version 1.7
\"spThin\" version 0.2.0
\"ENMeval\" Automated runs and evaluations of ecological niche models version 0.3.1
\"dismo\" Species distribution modeling version: 1.3-3
\"ENMTools\" version 1.0.5
\"spatstat\" version 1.64-1
\"rgeos\" version 0.5-5, **Input *Capsicum annuum* occurence points in Mexico and scripts used to run analyzes in paper**

**\"Fluctuation of ecological niches and geographic range shifts along chile pepper's domestication gradient.\"**

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**Description of the data and file structure**

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These are the input files of chile pepper (C. annuum) occurence points. They are run with extractPoints.html to get the environmental information associated for all domestication categories (wild, semiwild \"arvense\", landrace, commercial)

**Complete Chile Collection_Diversity_and_distributions.csv**

* Coordinates from field trips throughout Mexico (2013-2015 and 2018-2019) on behalf of Mercer Lab (Ohio State University - OSU) and Jardón Lab (National Autonomous University of Mexico - UNAM).

**WILDS**

**KraftSupp_ThirdPage.csv**

* You will need to download the third page of the supplementary dataset S3 from: Kraft, K....