2021_WNV_AvianHost_DistributionIndices

BRT/RF ensemble spatial Models and Weighted seasonality code for WNV avian Hosts. 

Abstract:

A series of BRT spatial models were produced for WNV avian hosts (Corvus corax, Corvus corone, Corvus frugilegus, Corvus monedula, Corvus ruficollis, Passer domesticus, Pica pica, Turdus merula) by combining Random Forest and Boosted Regresion Trees spatial modelling outputs, implemented using the VECMAP modelling suite, using a standard set of covariates including Fourier Processed Remotely Sensed environmental variables, land use proportions, human population and elevation. The training data offered to the model process include polygon data from the Birdlife Internatioinal project and from the Global Biodiversity Information Facility (www.gbif.org) . In addition an ensemble model combining Random Forest and Boosted Regresion Trees spatial modelling outputs has been produced for an index of seasonal distributions of corvid presence categories ranked in decreasing order as follows Resident, Breeding, Non-Breeding, Passage Speces included : Corvus vorax, Corvus monedula, Corvus corona, Corvus frugilegus, Corvus ruficollis. 

File naming scheme: 

File name = blifecorvidssuminvcdBRTRFENS.tif 

description: wnvmodelsdesc.txt

Projection + EPSG code:Latitude-Longitude/WGS84 (EPSG: 4326)

Spatial extent:Extent   -32.0000000000000000,18.0000000000000000 : 68.9999999999999574,81.9999999999999716

Spatial resolution:0.0083333 deg (approx. 1000 m)  

Temporal Resolution: 

Seasonal 

Pixel values:an index of seasonal distributions

Source: 

The Birdlife Internatioinal project and from the Global Biodiversity Information Facility (www.gbif.org)

Software used:ArcMap 10.8

License: CC-BY-SA 4.0

Processed by:ERGO (Environmental Research Group Oxford) https://ergoonline.co.uk/ for the H2020 MOOD project