DOI: 10.5281/zenodo.17854950
title: 2020_2023_Distributions_WestNileVirus_AOH_BirdLife_eBird

description: Abstract:

Distributions of West Nile Virus infection in bird hosts:

 

An extensive range of mapped outputs has been produced showing indices of the distribution of West Nile Virus infection in birds.  WNV testing data extracted from the published literature for approximately 1520 bird species, of which 788 were positive.  These data consisted of the number tested and the number positive, which were summarised as the arcsine proportion of positive cases – i.e., prevalence (we call it ratio).  In many cases, these test data were provided for several geographic (generally continental or sub-continental regions. 

 

These test data were then applied to three sets of bird distribution data:



The IUCN Birdlife global ranges (link),  which were subdivided into Breeding, non-Breeding, Resident, and Passage for each species.  These data are cited as “BirdLife International and Handbook of the Birds of the World (2023) Bird species distribution maps of the world. Version 2023.1”. They are available on request at http://datazone.birdlife.org/species/requestdis.

The Area of Habitat Suitability (AOH) raster datasets produced by Lumbierres et al (2020) by applying binary habitat suitability values to the BirdLife ranges referred to above, divided into Breeding, Non-Breeding, Non-Migrant, and Resident species.  They are available at  https://doi.org/10.5061/dryad.02v6wwq48.

The eBird dataset referred to above, which consists of annual summary abundance data at 3km resolution (2021-2022).  They are available to registered users at https//ebird.org/maps. These were converted into Binary Presence Absence to allow the production of species richness (i.e. species numbers) surfaces that could be compared to the AOH and Birdlife  Data. The prevalence values were also applied to the annual abundance data to provide distributions of the abundance of infected and uninfected birds, expressed as either mean per species or summed abundance of all species.


 

The raw data and more results can be requested by contacting Dr. William Wint. 

Files Description: 

The TIF files are categorized into 3 zip files, each containing 3 datasets: BirdLife, AOH, and ebird. 

The number  of species for each category,  and the filenames of the resulting maps, are shown in the table  called birddataFilenames.xlsx

The arcsine proportion prevalence (ratio) for every species and availability on 3 different datasets is shown in the table called Bird_ratio_ebird_birdlife_AOH_all.xlsx

 

Projection: 

ebird: Name    ESRI:54012 - World_Eckert_IV Units    meters  Method    Eckert IV Celestial body    Earth

AOH:  Name    EPSG:4326 - WGS 84 Units    Geographic (uses latitude and longitude for coordinates) Method    Lat/long (Geodetic alias) Celestial body    Earth

Birdlife:   Name    EPSG:4326 - WGS 84 Units    Geographic (uses latitude and longitude for coordinates) Method    Lat/long (Geodetic alias) Celestial body    Earth

Spatial extent:ebird :    -16921197.8405410572886467,-6996497.1872881092131138 : 16920977.0813010185956955,8460601.4614715818315744

AOH: Extent    -180.0000000000000000,-59.9999999999998579 : 179.9999999999994316,84.9999999999999147

          Birdlife: Extent    -180.0000000000000000,-60.0000000000000000 : 180.0000000000000000,85.0000000000000000

Spatial resolution:AOH: 0.04166 deg (approx. 4.63 km)  

ebird :  2541.848 m ( 2.54 km )

Birdlife 0.05 deg ( approx  5.56 km) 

Pixel values:unit: Probability (between 0 to 1)

Software used:The software used for map production is ESRI ArcMap 10.8. The analysis codes are all in Python.

License: CC-BY-SA 4.0Processed by:ERGO (Environmental Research Group Oxford) https://ergoonline.co.uk/