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Advisor(s)
Abstract(s)
JUSTIFICATION: Savigniorrhipis topographicus is a single-island endemic money spider species restricted to São Jorge island in Azores, Portugal (Crespo et al. 2013). It is a rare species, with a restricted Extent of Occurrence (EOO) (4-20 km² ) and Area of Occupancy (AOO) (4-20 km²), although it is likely towards the higher end of this estimate. In the past, the species has probably strongly declined due to changes in habitat size, and there is a continuing decline in the EOO, AOO, extent and quality of habitat as well as the number of mature individuals as a result of the invasions of non-native plants and trampling of soil by dairy cows. The species occurs in a single patch of native forest (at Topo Nature Reserve), where it is under severe threat. Therefore, we suggest as future measures of conservation: (1) a long-term monitoring plan of the species; (2) control of invasive species, and (3) restrictions to the access of cattle to this area. The species is assessed as Critically Endangered (CR).
Description
Keywords
Savigniorrhipis topographicus Endemic Spider São Jorge Island (Azores) Azores
Citation
Borges, P.A.V. & Cardoso, P. (2020). “Savigniorrhipis topographicus”. The IUCN Red List of Threatened Species 2020: e.T58064398A58064510. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T58064398A58064510.en
Publisher
IUCN