Alien vascular flora of Marion and Prince Edward Islands: new species, present distribution and status

1990 ◽  
Vol 2 (4) ◽  
pp. 301-308 ◽  
Author(s):  
Dana M. Bergstrom ◽  
V.R. Smith
Keyword(s):  
South Africa ◽  
Prince Edward Island ◽  
Plantago Lanceolata ◽  
Agrostis Stolonifera ◽  
Marion Island ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Prince Edward Islands ◽  
Present Distribution ◽  
Established Population

The presence and distribution of alien plant species on subantarctic Marion and Prince Edward Islands is reviewed and updated. This study documents the finding of a well established population of Cerastium fontanum on Prince Edward Island. An additional taxa, Senecio sp., is recorded in association with a recurrence of Plantago lanceolata on Marion Island. Propagules of both these taxa have recently been dispersed to the island in building material imported from South Africa. The distribution of Agrostis stolonifera and Sagina apetala on Marion Island has increased markedly between 1981 and 1989.

Establishment of the South African meteorological station on Marion Island, 1947–48

Polar Record ◽  
1950 ◽  
Vol 5 (40) ◽  
pp. 576-579 ◽  
Author(s):  
A. B. Crawford
Keyword(s):  
South Africa ◽  
South African ◽  
Prince Edward Island ◽  
Prime Minister ◽  
Marion Island ◽  
The South ◽  
Commanding Officer ◽  
Prince Edward Islands ◽  
Gough Island ◽  
Bad Weather

Between 1939 and 1945, plans were afoot in the Union of South Africa for the establishment of meteorological stations on Gough Island in the South Atlantic, and on one of the Prince Edward Islands in the southern Indian Ocean. Shortage of shipping and staff caused these plans to be shelved in 1945. In 1947, Field-Marshal Smuts, who was then Prime Minister of the Union, decided to annex the Prince Edward Islands without delay. These islands, which consist of Marion Island and the smaller Prince Edward Island, are situated in approximately lat. 47° S., long. 38° E., half-way between South Africa and Antarctica, and have always been regarded as British, although no records of any sort of annexation ceremony can be traced.In December 1947, therefore, the frigate H.M.S.A.S. Transvaal recalled her crew from Christmas leave and sailed south. Bad weather delayed a landing for several days, but eventually, on 29 December 1947, the commanding officer of the Transvaal landed on a rocky beach on the eastern side of Marion Island and hoisted the South African flag.

Environmental Conservation at the Sub-Antarctic Prince Edward Islands: A Review and Recommendations

1988 ◽  
Vol 15 (4) ◽  
pp. 317-326 ◽  
Author(s):  
John Cooper ◽  
Patrick R. Condy
Keyword(s):  
South Africa ◽  
Prince Edward Island ◽  
Management Plan ◽  
Environmental Conservation ◽  
New Developments ◽  
Prince Edward Islands ◽  
Environmental Impact Assessments ◽  
Aircraft Landing ◽  
Near Future ◽  
Formal Status

With respect to environmental conservation at* the Prince Edward Islands, South Africa has not lagged behind other nations owning sub-Antarctic islands. Indeed, with respect to some aspects, it can claim to be in the forefront. The most serious environmental problems at the Prince Edward Islands have to do with the need for control or eradication of certain established alien species of both plants and animals, the prevention of the introduction of additional aliens, and the carrying out of environmental impact assessments prior to new developments or expansions of existing facilities and programmes. However, where South Africa has lagged behind is in the enunciation of a policy on, and the proclamation of legislation giving, formal status to environmental conservation at, and the implementation of a formal and effective management plan for, the Prince Edward Islands.It is hoped that these shortcomings will be redressed in the near future. But if, for example, an aircraft landing strip were ever to be built on Marion Island, then the need for the proclamation of legislation and the implementation of a management plan would become even greater than at present. Prince Edward Island is so exceptionally special as an undisturbed sub-Antarctic island that it must never be subjected to any such development.

scholarly journals Assessment of Useful Alien Plant Species Cultivated and Managed in Rural Home Gardens of Limpopo Province, South Africa

Scientifica ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Sebua Silas Semenya ◽  
Alfred Maroyi
Keyword(s):  
South Africa ◽  
Plant Species ◽  
Construction Materials ◽  
Alien Plants ◽  
Limpopo Province ◽  
Home Gardens ◽  
Substantial Part ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Use Categories

Several communities in developing countries derive substantial part of their livelihood needs from alien plants cultivated and managed in home gardens. The aim of this study was to assess useful alien plant species cultivated and managed in home gardens of Limpopo province in South Africa. Semistructured interviews, personal observation, and guided walks with 300 participants between January 2015 and December 2016 were employed to obtain data on names of alien plants cultivated in home gardens and their use categories. A total of 101 plant species belonging to 44 families were recorded from the study area. More than half of the species (66.3%) belonged to 14 families, Fabaceae, Asteraceae, Rosaceae, Solanaceae, Lamiaceae, Anacardiaceae, Poaceae, Amaranthaceae, Apocynaceae, Brassicaceae, Cactaceae, Euphorbiaceae, Moraceae, and Myrtaceae. Twenty-six use categories of alien plants were identified in this study with the majority of species (75.2%) used for medicinal purposes, followed by ornamental (33.7%), edible fruits (24.8%), spices (16.8%), vegetables (16.8%), shade (11.9%), beverages (10.9%), construction materials (8.9%), firewood (7.9%), and hedge (7.9%). These findings corroborate the existing body of knowledge emphasizing the importance of plants grown and managed in home gardens to the livelihood needs of local communities.

Maireana brevifolia (Chenopodiaceae: Camphorosmeae), a new naturalized alien plant species in South Africa

Bothalia ◽  
2011 ◽  
Vol 41 (2) ◽  
pp. 235-238 ◽  
Author(s):  
L. Mucina ◽  
D. A. Snijman
Keyword(s):  
South Africa ◽  
Alien Species ◽  
South African ◽  
Plant Species ◽  
Western Cape ◽  
Alien Plant Species ◽  
The South ◽  
Alien Plant ◽  
African Flora

We describe and discuss the distribution of a new, naturalized alien species, Maireana brevifolia (R.Br.) Paul G.Wilson (Chenopodiaceae), a native of Australia, in the western regions of South Africa. First discovered near Worcester, Western Cape in 1976, the species is now established in disturbed karoo shrubby rangelands, along dirt roads and on saline alluvia, from northern Namaqualand to the western Little Karoo. In the South African flora, M. brevifolia is most easily confused with the indigenous Bassia salsoloides (Fenzl) A.J.Scott, from which it is distinguished by the flat to cup-shaped and almost glabrous perianth with woolly-ciliate lobes, and the hardened and winged fruiting perianth.

scholarly journals Inter-island dispersal of flightless Bothrometopus huntleyi (Coleoptera: Curculionidae) from the sub-Antarctic Prince Edward Island archipelago

2011 ◽  
Vol 23 (3) ◽  
pp. 225-234 ◽  
Author(s):  
G.C. Grobler ◽  
A.D.S. Bastos ◽  
C.T. Chimimba ◽  
S.L. Chown
Keyword(s):  
Gene Flow ◽  
Prince Edward Island ◽  
Haplotype Diversity ◽  
Marion Island ◽  
High Haplotype Diversity ◽  
Prince Edward Islands ◽  
Cytochrome Oxidase I Gene ◽  
Low Levels ◽  
Dispersal Events ◽  
I Gene

AbstractBothrometopus huntleyi is a flightless weevil endemic to the volcanically-formed sub-Antarctic Prince Edward Islands archipelago that arose approximately 0.5 million years ago (m.y.a.). Since emergence, a series of volcanic and glaciation events have occurred on Marion Island, whilst Prince Edward Island, the second island constituting the archipelago, has remained largely unaffected by glaciation. Cytochrome oxidase I gene analyses indicate that major historical dispersal events in this species are linked to the geologically discrete histories of these islands and underlie the high haplotype diversity (0.995) recovered for the Prince Edward Islands archipelago. The estimated time to haplotype coalescence of ∼ 0.723 m.y.a. is in keeping with estimated dates of island emergence, and the majority of individuals appear to have descended from a relict, high-altitude population that is still present on Marion Island. The first major inter-island dispersal event occurred ∼ 0.507 m.y.a., coinciding with the oldest dated rocks on Marion Island. Apart from this early inter-island colonization, only one other between-island dispersal event was detected. The genetically discrete B. huntleyi complexes on each of the islands of the Prince Edward Islands archipelago together with the low levels of inter-island gene flow reaffirm the need to control alien invasive mice, which are restricted to Marion Island, and which prey on this weevil species.

Sign in / Sign up

Export Citation Format

Share Document