2,891 Works

Aquatic Biodiversity Corridors

Geographic\Natural Environment\Biotic\Flora\Vegetation

Broad habitat units (BHU) were derived by identifying areas with a unique combination of homogenous climate, geology, and topography, guided in certain areas by Low and Rebelo (1996). For more details on the methodology see Cowling, R.M., Pressey, R.L., Lombard, A.T., Heijnis, C.E., Richardson, D.M., and Cole, N. Framework for a conservation plan for the Cape Floristic Region. A report for the CAPE Project for WWF: S.A.`

CAPE irreplaceability 2002

Original shape file had the following attributes: Spheroid = Clarke 1880, Units = meters, Central meridian = 22, 1st standard parallel = -34, 2nd standard parallel = -32, Latitude of projection at origin = 0, False easting = 0, False, Northing = 0 Projection was then changed to Geographic and datum to WGS84 using the projection script and datum converter in Arcview.`

Renosterveld Coast interior gradient

Gradients linking the coast to inland regions through natural vegetation/river corridors. Such gradients capture ecological processes operating at a larger scale such as biota migration and adaptation to climate change.

EC CBA reserves2 Project

Gouritz Initiative Processes East-West Mountain Corridors

Two large west-east corridors that stretch across the planning domain, linking the Swartberg and associated mountain chains in the, North. The maintenance of continuous corridors along these mountain chains provides an east-west climatic gradient, ranging from winter rainfall in the west to summer rainfall in the east.

Gouritz Initiative - Vegetation map

Vegetation types for the Gouritz Initiative area. The vegetation types have been graded as well according to percentage protected, percentage remaining and whether it is endemic: - Indication of whether the vegetation type is endemic to the Gouritz Initiative area (see Appendices 1 and 2 in Lombard et al., 2004) - Percentage of the original extent of the vegetation type remaining as of 1998 (see Appendices 1 and 2 in Lombard et al., 2004) -...

Renosterveld Planning Domain

Planning domain of the Cape Lowlands Renosterveld Project consisting of a central part (made up of the Overberg, Boland/Swartland and Elgin Basin) and a 5km buffer.

SKEP Framework for action

Combination of irreplaceability and vulnerability value per planning units. Irreplaceability captures the biodiversity significance of each planning unit in terms of vegetation types and expert features. Vulnerability reflects the potential of future transformation based on urban, crop, ostrich, and mining potential. The Framework field in the dataset has the following meanings: Combination of irreplaceability and vulnerability. Values from 1 to 6 characterise areas of low irreplaceability values (by increasing order of vulnerability; 1: none, 6:...

Spekboom restoration

Vegetation Merge

Western Cape Wetlands Directory Data

This layer was created using point data generated from various reports and studies included in the Western Cape Wetland Directory database (Dallas and Seymour 2006). Wetlands were broadly defined using the definition used by the RAMSAR convention: `areas of marsh, fen, peatland or water, whether natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt, including areas of marine water the depth of which at low tides does...

Position of Agulhas Current at satellite track 020 in AGUHYCOM using technique described in Malan et. al (2018) JGR

Neil Malan
Identification of core position of the Agulhas Current, as plotted in Fig. 3 of Malan et. al. (2018)

Suitable habitat for Burchell Zebra

The purpose is to provide a preliminary guideline on carrying capacities for game species suited to the Little Karoo. These are expressed as the estimated area (hectares) required per animal for the major habitat types present. It is a guideline for assisting landowners to utilize their veld at sustainable levels. There is no specific combination of game animals that will be suitable for introduction to all of the farms in the Little Karoo. The mix...

Greater Cederberg Biodiversity Corridor (GCBC): soil transit gw

Unique combinations of vegetation types were classified based on their underlying parent material and a 500m buffer on either side was created along the interfaces. For additional information, please refer to the Cederberg Technical Report. Although the greatest care has been taken to ensure that the information we serve is up to date and spatially accurate, the BGIS unit and its partner organizations give no warranty, express or implied, as to the accuracy, reliability, utility...

Gouritz Initiative Processes, North-South Gouritz corridor

The, North-south corridor of the Gouritz River provides a link from the Karoo to the sea, thereby presenting a, North-south macroclimatic gradient as well as an upland-lowland gradient.

Karoo vegetation

Putting Biodiversity Plans to Work Domain

Renosterveld Soiltype Transitions

Soil type transitions are areas along which contrasting geological types meet. These areas are spatial components of important ecological and evolutionary processes such as plant diversification and pollinator movements.

STEP - Vegetation

Vegetation types within the STEP planning domain. The final vegetation map for the STEP planning domain comprised two sections: (i) Thicket vegetation (mapped in the field by the Biological Survey team , see Vlok, J.H.J. and Euston-Brown, D.I.W. 2002. The patterns within, and the ecological processes that sustain, the subtropical thicket vegetation in the planning domain for the Subtropical Thicket Ecosystem Planning (STEP) project. TERU Report 40: 142pp), and (ii) non-thicket vegetation (mapped as a...

Frequency of landslides triggered by precipitations

Helge Smebye
This dataset includes an estimate of the annual frequency of landslide triggered by precipitations. It depends on the combination of trigger and susceptibility defined by six parameters: slope factor, lithological (or geological) conditions, soil moisture condition, vegetation cover, precipitation and seismic conditions. Unit is expected annual probability and percentage of pixel of occurrence of a potentially destructive landslide event x 1000000. This product was designed by International Centre for Geohazards /NGI for the Global Assessment...

Soil Organic Carbon in Topsoil (30cm depth) - 2018

ISRIC soil data is available in 6 depths of which the 0-5, 5-15 and 15-30cm layers were aggregated to obtain the soil organic carbon for topsoil. The values of this layer was adjusted by taking land cover / land use into account by using the SANLC2018

Biomes of South Africa: Educators' training manual

Mthokosizi Moyo, Caitlin Ransom & Kogieluxmie Govender
Educators' training manual for Life Science aligned with the Curriculum and Assessment Policy Statements of the Department of Education.

Sectoral Gross Value Added (GVA) for community social and personal services, as well as government services (SIC9&10) as a driver from 1995 to 2016

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The South African Gross Geographic Value Added (GVA) data for each economic sector per year since 1995 to 2016 was supplied by Quantec to the CSIR built environment. This data was disaggregated to a 500m grid using a dasymetric mapping algorithm (https://gap.csir.co.za/gap/images/documents/developing-a-geo-data-frame-using-dasymetric-mapping-principles-to-facilitate-data-integration). A linear regression was then fitted to the GVA dataset and the Slope of the regression was used as an indicator for exposure, the R2 value was converted to a percentage to provide...

Root Mean Square Difference between the nine ensemble member change anomalies of the seasonal mean near-surface (2m) temperature for the 10% percentile for 2066 - 2095 relative to 1976-2005, for the JJA season, under the RCP 4.5 pathway

Root Mean Square Difference for seasonal (JJA) mean near-surface (2m) temperature (°C) change from the 10% percentile projected for 2066-2095, relative to present (1976 - 2005), under the RCP 4.5 pathway for the southern African region. To generate the image, nine coarse General Circulation Models (GCM) are downscaled to a finer spatial resolution (0.44°x 0.44°) using the Rossby Centre regional model (RCA4) forcing its lateral boundaries. The model simulated daily temperature averages, which are used...

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