Rationale
(Changed due to Same category and criteria)
This species is very sensitive to impacts from invasive alien trees, but has shown rapid recovery when these trees are removed. It was discovered in 2006 on top of Table Mountain following pine removal and having not been seen since 1934. Although the species is stable, its sensitivity to alien invasive trees is a concern; if these are allowed to regrow, they would have a major impact on the species. It is known from around five locations. It is listed as Vulnerable.
Distribution
This species is endemic to South Africa and confined to the Cape Fold mountains (Western Cape).
Population size is unknown, but the population is apparently stable at present.
Threats
Probably the synergistic effects of invasive alien trees, agricultural activity around streams, and introduced trout are threat to the species (Samways 2006).
Conservation
Removal of invasive alien trees is benefiting this species. Avoidance of trout restocking also appears to benefit the species. Research into population numbers and range, biology and ecology, threats, and trends/monitoring of this species would be valuable. Habitat and site-based actions are also required.
[@article{4730,
author = {Samways, M.J.},
journal = {Odonatologica},
pages = {341--368},
title = {National Red List of South African Odonata},
volume = {35},
year = {2006}
}
,@article{4730,
author = {Samways, M.J.},
journal = {Odonatologica},
pages = {13--62},
title = {Diversity and conservation status of South African dragonflies (Odonata)},
volume = {28},
year = {1999}
}
,@article{4730,
author = {Samways, M.J.},
journal = {African Entomology},
pages = {43--52},
title = {A strategy for national red listing invertebrates based on experiences with Odonata in South Africa},
volume = {10},
year = {2002}
}
,@article{4730,
author = {Samways, M.J.},
journal = {Biodiversity and Conservation},
number = {9},
pages = {2575--2586},
title = {Honing Red List assessments of lesser known taxa in biodiversity hotspots},
volume = {16},
year = {2007}
}
,@article{4730,
author = {Samways, M.J.},
journal = {International Journal of Odonatology},
pages = {255--262},
title = {Critical species of Odonata in southern Africa},
volume = {7},
year = {2004}
}
,@electronic{4730,
address = {http://www.iucnredlist.org},
author = {IUCN},
title = {IUCN Red List of Threatened Species (ver. 2010.3)},
year = {2010}
}
,@article{4731,
author = {Samways, M.J. and Taylor, S.},
journal = {South African Journal of Science},
pages = {78--80},
title = {Impacts of invasive alien plants on red-listed South African dragonflies (Odonata)},
volume = {100},
year = {2004}
}
,@book{15543,
address = {Nylstroom},
author = {Tarboton, W. and Tarboton, M.},
publisher = {Privately published by the authors},
title = {A fieldguide to the dragonflies of South Africa},
year = {2002}
}
,]
