Savigniorrhipis topographicus

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...

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Bibliographic Details
Main Author: Borges, Paulo A. V. (author)
Other Authors: Cardoso, Pedro (author)
Format: other
Language:eng
Published: 2021
Subjects:
Online Access:http://hdl.handle.net/10400.3/5823
Country:Portugal
Oai:oai:repositorio.uac.pt:10400.3/5823
Description
Summary: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).