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Showing 1 to 20 of 50 for “"Succulent Karoo"”.
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Land use and its impact on the Succulent Karoo
The Succulent Karoo biome (SK biome) is one of the 25 internationally recognized biodiversity hotspots in South Africa with approximately 1940 endemic species. The SK biome is, however, poorly conserved with less than 5% of the area under formal protection. It is also highly threatened by a range …
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Vegetation patterns and plant reproductive processes in the succulent Karoo
… and plant reproductive processes at the Tierberg Karoo Research Centre (33°1 0'S, 22°17'E) in the semi-arid southern Succulent Karoo, South Africa. It begins with an investigation into the roles of soil properties and competition in explaining variation in species distributions. The aim was to …
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Management requirements for coordinating the Succulent Karoo Ecosystem Program (SKEP)
… programs. The particular case in point is the Succulent Karoo Ecosystem Program (SKEP), which was initially set up by a NGO, Conservation International (CI), and thereafter transferred to another host institution, a national parastatal called the South African National Biodiversity Institute …
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The role of nurse plants in the vegetation dynamics of the succulent Karoo
… is known about the vegetation dynamics of the Karoo region of South Africa. The aim of this study was to focus on the role of the "availability of suitable space" in the regeneration of Succulent Karoo vegetation. By undertaking a series of manipulative experimental transplants and pattern …
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Soil drying cycles in the succulent Karoo : different rooting systems and water uptake
In the semi-arid Succulent Karoo water is one of the most limiting resources, and plants that survive in the area require competitive water-use strategies suited to long periods of drought. Over the years much emphasis has been put on mechanisms that allow for the competitive success of water-use …
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The application of systematic conservation planning in the succulent Karoo biome of South Africa.
… Conservation in the Knersvlakte Region of the Succulent Karoo, South Africa: A Systematic Conservation Planning Approach by Philip George Desmet February 2004 Systematic conservation planning is about making spatially explicit decisions regarding the use of land, based on the observed or …
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The application of systematic conservation planning in the succulent Karoo biome of South Africa
… reserve in the Knersvlakte region of the Succulent Karoo using cadastres as planning units. At the larger scale the data are used in the same region to design a biosphere reserve that promotes the persistence of ecological processes in the landscape using gridded planning units. Both …
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Mycorrhiza re-estalishment on post mined rehabilitated areas of the Brand se Baai Succulent Karoo vegetation
Submitted in partial fulfillment of the requirement for the degree of Master of Science in Environmental Impact Assessment
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Long-term vegetation change in the Succulent Karoo, South Africa following 67 years of rest from grazing
… vegetation composition in the diverse semi arid Succulent Karoo vegetation of South Africa were investigated after 67 • (1937-2004) years of rest from grazing at the Worcester Veld Reserve. Vegetation change in 70 plots at this 75 ha site was assessed using multi variate ordination techniques. …
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Long-term vegetation change in the Succulent Karoo, South Africa following 67 years of rest from grazing
… vegetation composition in the diverse semi arid Succulent Karoo vegetation of South Africa were investigated after 67 • (1937-2004) years of rest from grazing at the Worcester Veld Reserve. Vegetation change in 70 plots at this 75 ha site was assessed using multi variate ordination techniques. …
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The effects of heuweltjies and Microhodotermes viator (Isoptera: Hodotermitidae) on invertebrate assemblages and species turnover in the succulent Karoo, Western Cape
… heuweltjies and in the surrounding matrix in the Karoo Desert National Botanical Gardens, Worcester, Western Cape Province. On- and off-mound community contrasts were assessed by means of a cluster analysis, and species turnover was measured using the Jaccard distance. Invertebrates were more …
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The short-term effect of rehabilitation on ecosystem services in the semi-arid succulent Karoo lowlands and the Little Karoo, South Africa
This study has shown that using active rehabilitation in combination with improved management strategies (e.g. rest from grazing) may induce recovery of certain ecosystem services within practically relevant time scales. However, these benefits might not be tangible for landowners or society as of …
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Long-term impacts of livestock grazing in the Succulent Karoo: A 20-year study of vegetation change under different grazing regimes in Namaqualand
Livestock grazing is a key form of land-use around the world. Sustained, heavy grazing pressure, however, changes the vegetation structure of arid and semi-arid regions, often resulting in the local extinction of perennial, palatable species. It also causes changes in species composition through …
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Assessing intra-seasonal land surface change and long term trends in the succulent Karoo biome using coarse resolution satellite and interpolated rainfall surfaces
The Succulent Karoo is a biodiversity hot spot situated along the west coast of southern Africa. While it is predominantly recognized as a west coast vegetation type its borders stretch as far east as Steytlerville in the Little Karoo. The area contains the largest number of endemic succulent …
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Plant water relations along a rainfall gradient, between the succulent Karoo and Mesic Mountain Fynbos, in the Cedarberg Mountains, near Clanwilliam, South Africa
The similarities in the structure of the sclerophyllus evergreen shrublands of the five disjunct mediterranean-type ecosystems is thought to be the result of convergent evolution. In the Mediterranean, California, and Chile the length of the summer drought and the cold winter temperatures are …
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Reconstructing the late pleistocene palaeoenvironment of the Richtersveld using fossil charcoal
The Succulent Karoo is recognised as an important biodiversity hotspot and many of the key plant lineages that characterise the biome are thought to have originated during the Pleistocene epoch. However, due to the paucity of palaeobiological proxy data available for the Succulent Karoo, relatively …
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The vegetation of Paulshoek, Namaqualand : phytosociology and landuse impacts
The succulent karoo biome is acclaimed internationally for its high biodiversity and endemism. At the same time the area is perceived to be under threat from extensive livestock production. Extensive research has been under taken in the last twenty years to describe and understand the underlying …
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Dispersal, gene flow, niche divergence and local adaptation in the hyper-diverse ruschioid Aizoaceae: testing alternative modes of speciation in the Knersvlakte quartz field flora of the Succulent Karoo, South Africa
… its neighboring biodiversity hotspot, the arid Succulent Karoo (SK), which has hosted the spectacular radiation of the ecologically dominant ruschioid Aizoaceae, a succulent group which exhibits extreme morphological diversity and convergence. This thesis focused on ruschioid Aizoaceae in the …
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Trends in vegetation productivity and seasonality for Namaqualand, South Africa between 1986 and 2011: an approach combining remote sensing and repeat photography
… South Africa. Namaqualand forms part of the Succulent Karoo biome, which is characterised by exceptionally high species biodiversity but which has undergone severe transformation since the arrival of pastoral colonists. Vegetation productivity in Namaqualand is of great importance since there …
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