Data from: Distribution models predict climate-related range alteration or extinction of eleven threatened tropical rainforest trees in the Western Ghats

This dataset contains information related to species occurence data and species distribution modeling (SDM) analysisr of eleven threatened tree species. Occurrences are compiled from extensive field surveys in the Anamalai Hills along with data from the Global Biodiversity Information Facility (GBIF.org) and earlier work done within the southern Western Ghats, India.

References:
Page, N. V., & Shanker, K. (2020). Climatic stability drives latitudinal trends in range size and richness of woody plants in the Western Ghats, India. PLOS ONE, 15(7), e0235733. https://doi.org/10.1371/journal.pone.0235733

GBIF.org (2022) GBIF Occurrence Download, 2 August 2022. DOI:10.15468/dl.gnvuxj

AUTHOR #1
1. Name: A.P. Madhavan
2. Work Address: Nature Conservation Foundation, 1311, 12th A Main, Vijayanagar 1st Stage, Mysuru 570017, Karnataka, India
3. Email address: madhavan@ncf-india.org
4. ORCID: https://orcid.org/0009-0009-2754-8256

AUTHOR #2
1. Name: Kshama Bhat
2. Work Address: Nature Conservation Foundation, 1311, 12th A Main, Vijayanagar 1st Stage, Mysuru 570017, Karnataka, India
3. Email address: kshama@ncf-india.org
4. ORCID: ORCID: https://orcid.org/0000-0002-6190-2687

AUTHOR #3
1. Name: Srinivasan Kasinathan
2. Work Address: Nature Conservation Foundation, 1311, 12th A Main, Vijayanagar 1st Stage, Mysuru 570017, Karnataka, India
3. Email address: srini@ncf-india.org
4. ORCID: https://orcid.org/0000-0001-7323-6653

AUTHOR #4
1. Name: Divya Mudappa 
2. Work Address: Nature Conservation Foundation, 1311, 12th A Main, Vijayanagar 1st Stage, Mysuru 570017, Karnataka, India
3. Email address: divya@ncf-india.org 
4. ORCID: https://orcid.org/0000-0001-9708-4826

AUTHOR #5
1. Name: Navendu Page
2. Work Address: Wildlife Institute of India, Post Box No. 18, Chandrabani, Dehradun, Uttarakhand 248001, India
3. Email address: navendu.page@gmail.com
4. ORCID: ORCID: https://orcid.org/0000-0002-9413-7571

AUTHOR #6
1. Name: T. R. Shankar Raman 
2. Work Address: Nature Conservation Foundation, 1311, 12th A Main, Vijayanagar 1st Stage, Mysuru 570017, Karnataka, India
3. Email address: trsr@ncf-india.org 
4. ORCID: https://orcid.org/0000-0002-1347-3953

Keywords: tropical rainforest, climate change, tree distributions, species distribution models, range shifts, Western Ghats

Geographic Coverage:
1. Location/Study Area: Southern Western Ghats Montane Rain Forests, Southern Western Ghats Moist Deciduous Forests, India
2. GPS coordinates: SWG (73.95° – 80.33° E, 8.06° – 13.11°N) 

Temporal coverage
Starts: 2020-08-01
Ends: 2024-03-28

Besides this README.txt file, the dataset includes three comma-delimited text files (csv); two R scripts, and 1 kml file of surveyed trails.

CSV files with the data in columns as explained below:

1) Focal_Tree_Dat.csv

Comp: Number identifier
FT_ID: Unique tree no for each individual
Focal_tree: Scientific name of species
Date: Date of occurrence observation
Place: Area/locality description
Trail: Unique trail ID
Waypoint: Waypoint number     
Time: Time in hh:mm format    
Location: Specific description of occurrence locality    
Latitude: Latitude in decimal degrees N 
Longitude: Longitude in decimal degrees E 
Elevation: Elevation in metres    
Slope: Cateory of slope 
ID_Notes: Notes on identification
Phenophase: Phenophase expression at the time of observation                             
GBH: Girth at breast height in centimetres (comma separated list of numbers in case of multi-stemmed trees)     
Tree_ht: Tree height in metres
Canopy_ht: Maximimum height of the surrounding canopy in metres
Substrate: Soil substrate composition
Invasives: Name of invasive species (if present)    
Stature: Vegetation strata position 
Relatively: Stature of focal individual relative to other surrounding individuals 
Deadwood: Description of deadwood on the tree    
Damage: Description of damage on the bole 
Shape: Description of tree canopy shape
Closure: Canopy closure at focal tree    
Seedlings: Number of conspecific seedlings present in 5 m radius of focal tree    
Saplings: Number of conspecific saplings present in 5 m radius of focal tree
Trees:    Number of conspecific trees present in 5 m radius of focal tree
Remarks: Remarks 

2) Ffspecies.csv

Source: Source of occurrence    
ID: State/location of occurrence
Region: Biogeographic region of occurrence 
decimalLatitude: Latitude in decimal degrees N
decimalLongitude: Longitude in decimal degrees E
species: Scientific name of species

4) ft_surveys.csv

Date: Date of survey of sample trail
Prot_type: Category indicating whether protected area or fragment    
Place: Area/locality description
Route_description: Specific landmark description of trail
Trail: Unique trail ID    
Trail_distance: Tracked distance of trail in km    
Corrected_trail_distance: Corrected distance of trail in km
Track_filename_kml: File name of gps track
Sample_collected: Name of species if sample collected    
Observers: Name of observers     
Remarks: Remarks

ANALYSES SCRIPTS
flexsdm_script.R
Script containing the analysis of all maxent distribution modeling and associated analysis

Franklinia_density.Rmd
Script of density and abundance related analysis