Hyperolius riggenbachi 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Hyperoliidae

Scientific Name: Hyperolius riggenbachi
Species Authority: Nieden, 1910
Common Name(s):
English Riggenbach's Reed Frog
Taxonomic Source(s): Frost, D.R. 2016. Amphibian Species of the World: an Online Reference. Version 6.0 (31 March 2016). New York, USA. Available at: http://research.amnh.org/herpetology/amphibia/index.html.

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Annotations:
Needs updating
Assessor(s): Arne Schiøtz, Jean-Louis Amiet
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)
Justification:
Listed as Vulnerable because its Extent of Occurrence is less than 20,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat in Cameroon and Nigeria.

Geographic Range [top]

Range Description:This species is known from the Obudu and Mambilla Plateaus of eastern Nigeria, and the Bamenda Highlands, and the Adamawa Plateau (at Ngaouyanga and Banguve), western and central Cameroon. Two subspecies occur: H. r. riggenbachi and H. r. hieroglyphicus, the latter occurring in the Bamenda Highlands and on the Obudu Plateau, in an enclave surrounded by the former subspecies. Its altitudinal range is 900-1,800m asl.
Countries occurrence:
Native:
Cameroon; Nigeria
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is a very common species.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It lives in wetlands and small wooded watercourses in montane grassland. Males call at dusk from the stems of waterside plants. It breeds in still water near streams.
Systems:Terrestrial; Freshwater

Threats [top]

Major Threat(s): It is probably affected by the ongoing loss of its montane grassland, wetland and stream habitat due to small-scale agricultural activities and wood collection, as well as human settlement.

Conservation Actions [top]

Conservation Actions: It is not known to occur in any protected areas. Improved habitat protection at sites where this species is known to occur is needed.

Classifications [top]

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability:Marginal  
4. Grassland -> 4.7. Grassland - Subtropical/Tropical High Altitude
suitability:Suitable  
5. Wetlands (inland) -> 5.4. Wetlands (inland) - Bogs, Marshes, Swamps, Fens, Peatlands
suitability:Suitable  
5. Wetlands (inland) -> 5.7. Wetlands (inland) - Permanent Freshwater Marshes/Pools (under 8ha)
suitability:Suitable  
5. Wetlands (inland) -> 5.8. Wetlands (inland) - Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha)
suitability:Suitable  
1. Land/water protection -> 1.1. Site/area protection
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
1. Residential & commercial development -> 1.1. Housing & urban areas
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.2. Small-holder farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.1. Nomadic grazing
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.2. Small-holder grazing, ranching or farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.1. Taxonomy
1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
1. Research -> 1.6. Actions
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Amiet, J.-L. 1973. Notes faunistiques, ethologistiques et ecologistiques sur quelques amphibiens anoures du Cameroun (2e Serie). Annales de la Faculté des Sciences du Cameroun: 135-161.

Böhme, W. and Schneider, B. 1987. Zur Herpetofaunistik Kameruns (III) mit Beschreibung einer neuen Cardioglossa (Anura: Arthroleptidae). Bonner Zoologische Beiträege: 241-263.

Gartshore, M.E. 1986. The status of the montane herpetofauna of the Cameroon highlands. In: Stuart, S.N. (ed.), Conservation of Cameroon Montane Forests, pp. 204-240. International Council for Bird Preservation, Cambridge, U.K.

IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004.

Joger, U. 1982. Zur Herpetofaunistik Kameruns (II). Bonner Zoologische Beiträge 33: 313-342.

Laurent, R.F. 1961. Note sur les Hyperolius et quelques Afrixalus (Salienta) du Musee de Berlin. Revue de Zoologie et de Botanique Africaines: 65-96.

Perret, J.-L. 1962. Revision des types de Leptopelis et note sur quelques Hyperolius (Amphibia Salienta) de la region camerounais, conserves au Museum de Berlin. Revue de Zoologie et Botanie Africaine: 235-246.

Perret, J.-L. 1966. Les Amphibiens du Cameroun. Zoologische Jahrbuecher fuer Systematik 8: 289-464.

Schiøtz, A. 1967. The treefrogs (Rhacophoridae) of West Africa. Spolia Zoologica Musei Hauniensi 25: 1-346.

Schiøtz, A. 1999. Treefrogs of Africa. Edition Chimaira, Frankfurt am Main.


Citation: Arne Schiøtz, Jean-Louis Amiet. 2004. Hyperolius riggenbachi. In: The IUCN Red List of Threatened Species 2004: e.T56198A11429812. . Downloaded on 10 December 2016.
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