Open AccessCategorization of extinction risk of Discocactus species
Author(s) -
Anny Bianca Santos Cruz,
Daniel Reis,
Juliano Ricardo Fabricante
Publication year - 2022
Publication title -
acta brasiliensis
Language(s) - English
Resource type - Journals
eISSN - 2526-4338
pISSN - 2526-432X
DOI - 10.22571/2526-4338569
Subject(s) - categorization , extinction (optical mineralogy) , geography , biodiversity , endangered species , global biodiversity , georeference , ecology , biology , physical geography , habitat , computer science , paleontology , artificial intelligence
The present study aimed to update the categorization of the extinction risk of Discocactus bahiensis Britton & Rose and Discocactus zehntneri Britton & Rose, endemic Cactaceae species from Northeastern Brazil. The georeferenced species occurrence points were obtained from the online databases speciesLink and Global Biodiversity Information Facility (GBIF). Polygons were traced using these points, being gridded with 4 km² cells and virtually divided in half (2 km²). Afterwards, the cells occupied by the species were counted in order to obtain their occupation areas. The species D.bahiensis presented 17 records and an occupation area of 32 km², while D.zehntneri presented 15 records and an occupation area of 24 km². The sites where the species are found present different factors of anthropic pressure. Thus, the species D.bahienses and D.zehntneri were categorized as “Endangered”, according to the B2biiicii criteria.