The conservation status of the South Africa's plants with a special focus on plants from the Fynbos Biome

Raimondo, D.; Foden, Wendy; Victor, Janine E.; Agenbag, L.; Turner, Russell; Helme, Nick

doi:10.1016/j.sajb.2007.02.106

Cited by 46 publications

(78 citation statements)

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“…Importantly, the use of Tulbaghia violacea in traditional medicine involves the destructive harvesting of the whole plant. Despite the plant being listed under the National Red List of South African plants as of least concern (LC) (Raimondo et al, 2009), the emerging interest and research emphasis being placed on the improvement and validation of traditional medicine increases the demand for these plants. This pressure exerts ecological instability on the resource base, hence the need for alternative medicinal sources.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of the antimicrobial and phytochemical properties between outdoor grown and micropropagated Tulbaghia violacea Harv. plants

Ncube

Ngunge

Finnie

et al. 2011

Journal of Ethnopharmacology

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Section: Introductionmentioning

confidence: 99%

A comparative study of the antimicrobial and phytochemical properties between outdoor grown and micropropagated Tulbaghia violacea Harv. plants

Ncube

Ngunge

Finnie

et al. 2011

Journal of Ethnopharmacology

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“…Also, the hand-pulling harvesting process resulted in removal of relatively few I. eleocharis rhizomes which are likely to be important for germination and plant spread. Besides, rhizomes of I. eleocharis are reported to be long and slender (Raimondo et al 2009); therefore, they might have grown horizontally underground to influence germination in harvested quadrats. Indeed, previous studies have shown that seeds (Chazdon 2003) and rhizomes (Rasheed 2004) play an important role in recovery of plants in previously disturbed areas.…”

Section: Discussionmentioning

confidence: 99%

“…1). It constitutes one of the 49 species of Ischyrolepis and is commonly found in the Eastern, Northern, and Western Cape provinces (Low and Rebelo 1996), where its populations are regarded as stable (Raimondo et al 2009). The plant has a rhizomatous habit and forms long lines of isolated and widely spaced shoots that are 30-80 cm tall.…”

Section: Introductionmentioning

confidence: 99%

“…The plant has a rhizomatous habit and forms long lines of isolated and widely spaced shoots that are 30-80 cm tall. The rhizomes are long and slender and occur at depths of between 5 cm and 20 cm under the sand (Raimondo et al 2009). The below ground, deep seated, spreading rhizomes are ideal for moving sands, and being deeply seated, they are not readily exposed by moving sand.…”

Section: Introductionmentioning

confidence: 99%

“…To our knowledge, no study has examined the life history, reproductive biology, and morphology of I. eleocharis, but like most Restionaceae, males and females are borne on separate plants. The plant produces silvery, flattened seeds that are wind dispersed (Raimondo et al 2009), and seeds germinate directly after the rains. Shackleton et al (2009) reported that the species (locally known as Bumtshayelo^) has been harvested for decades by local people for making hand brooms.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Density and Regrowth of a Forest Restio (Ischyrolepis eleocharis) under Harvest and Non-harvest Treatments in Dune Forests of Eastern Cape Province, South Africa

Ruwanza

Shackleton

2015

Econ Bot

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Density and Regrowth of a Forest Restio (Ischyrolepis eleocharis) under Harvest and Non-harvest Treatments in Dune Forests of Eastern Cape Province, South Africa. Ischyrolepis eleocharis (Mast.) H.P.Linder is a perennial rush or sedge-like herb in the Restionaceae family and has been harvested for various uses from coastal forest dunes of South Africa. Around 2005, a ban on I. eleocharis harvesting in Bathurst coastal forest was instituted by provincial conservation authorities based on their unsubstantiated impression that the species population was decreasing. Here we report on the population density pre and post the harvest ban, as well as further explore the autecology of the species by assessing plant density relative to environmental factors (slope and aspect) and a controlled experiment on regrowth after harvesting at different intensities. The results show that the shoot density of both living and dead I. eleocharis increased significantly over the past eight years. This concurs with results from the harvesting experiment which showed that I. eleocharis recovered rapidly within a year of harvesting. Both aspect and slope play a key role in the distribution of I. eleocharis, with most plants found in open patches in the forest located on the summit and upper slopes of dunes facing the landward side. These results indicate that I. eleocharis is highly abundant and resilient to harvesting.

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Modelling the distribution of Aspalathus linearis (Rooibos tea): implications of climate change for livelihoods dependent on both cultivation and harvesting from the wild

Lötter¹,

Maitre²

2014

Ecology and Evolution

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Aspalathus linearis (Burm. f.) R. Dahlgren (rooibos) is endemic to the Fynbos Biome of South Africa, which is an internationally recognized biodiversity hot spot. Rooibos is both an invaluable wild resource and commercially cultivated crop in suitable areas. Climate change predictions for the region indicate a significant warming scenario coupled with a decline in winter rainfall. First estimates of possible consequences for biodiversity point to species extinctions of 23% in the long term in the Fynbos Biome. Bioclimatic modelling using the maximum entropy method was used to develop an estimate of the realized niche of wild rooibos and the current geographic distribution of areas suitable for commercially production. The distribution modelling provided a good match to the known distribution and production area of A. linearis. An ensemble of global climate models that assume the A2 emissions scenario of high energy requirements was applied to develop possible scenarios of range/suitability shift under future climate conditions. When these were extrapolated to a future climate (2041–2070) both wild and cultivated tea exhibited substantial range contraction with some range shifts southeastwards and upslope. Most of the areas where range expansion was indicated are located in existing conservation areas or include conservation worthy vegetation. These findings will be critical in directing conservation efforts as well as developing strategies for farmers to cope with and adapt to climate change.

show abstract

The conservation status of the South Africa's plants with a special focus on plants from the Fynbos Biome

Cited by 46 publications

References 0 publications

A comparative study of the antimicrobial and phytochemical properties between outdoor grown and micropropagated Tulbaghia violacea Harv. plants

A comparative study of the antimicrobial and phytochemical properties between outdoor grown and micropropagated Tulbaghia violacea Harv. plants

Density and Regrowth of a Forest Restio (Ischyrolepis eleocharis) under Harvest and Non-harvest Treatments in Dune Forests of Eastern Cape Province, South Africa

Modelling the distribution of Aspalathus linearis (Rooibos tea): implications of climate change for livelihoods dependent on both cultivation and harvesting from the wild

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