Table Mountain National Park Research Articles

Changes in the distribution of indigenous forest in Table Mountain National Park during the 20th Century

Long-term changes in the distribution of Western Cape Afrotemperate Forest and Western Cape Milkwood Forest in Table Mountain National Park (TMNP) were examined using paired aerial and repeat ground-based photographs. All forest patches mapped on the aerial photographs taken in 1944 and 2008 were visited and boundaries between forest and adjacent vegetation types checked in the field. In addition, 50 historical ground-based photographs covering the period 1888 to 1980 were revisited between 2011 and 2012 and the change in forest cover was quantified using a 360 point sampling grid overlaid on each of the photograph pairs.Changes in fynbos, woody alien vegetation, alien grass, development and exposed rock and sand were also quantified. The analysis of aerial photographs showed that between 1944 and 2008 the number of forest patches on the Peninsula increased from 149 to 174 and total forest cover increased by 65.3% from 884.2ha to 1461.5ha. Only 13 of the forest patches decreased in cover after 1944 while 65 patches showed stasis and 96 increased in size. More than a third of the patches that decreased in size were of Western Cape Milkwood Forest located in proximity to expanding coastal development. The analysis of repeat ground-based photographs showed an increase in cover of Western Cape Afrotemperate Forest, alien grasses and urban development while fynbos vegetation, Western Cape Milkwood Forest, woody alien vegetation as well as exposed rock and sand decreased in cover. Historical land use practices such as firewood collection and a reduction in fire frequency relative to the fire regimes of the 19th century may also account for the changes observed in the historical photos. These results hold significance for the ecological management of TMNP in the face of changing climate and increased urbanisation.

Undeclared baggage: Do tourists act as vectors for seed dispersal in fynbos protected areas?

Encroachment by alien species is the second greatest threat to biodiversity worldwide. As South Africa’s Cape Floristic Region has a botanical endemism of nearly 70%, conservation efforts are a high priority. Estimates suggest that alien species cost the country over R6.5 billion per year. Despite significant research on alien species dispersal, the role of tourists as seed dispersers requires further exploration. To investigate the potential role tourists play in introducing alien seeds into protected areas, long-bristle brushes were used to scrape seeds off the shoes of hikers, dog walkers and cyclists, as well as the wheels of mountain bikes and dogs themselves, upon entering the Silvermine Nature Reserve section of the Table Mountain National Park in the Western Cape province, South Africa. In addition, a vegetation survey was conducted. This comprised 18 transects at various distances from the recreational paths in the park, and used a prioritisation ranking system that identified the alien species of greatest concern. It was concluded that the greatest number of alien plant species could be found along dog paths, in comparison to the hiking trails and cycling trails. This corresponded to the findings that dog walkers had the highest incidence of seeds on their shoes, suggesting that tourists were possibly dispersing seeds from their gardens. Alien species significantly covered more of the vegetation transects closer to the trails than they did in transects further into the matrix. Because more alien species were present in areas susceptible to human disturbance, the data suggest that tourists can act as vectors for alien seed dispersal. These findings emphasise the need for active tourism management in line with the South African National Parks Biodiversity Monitoring Programme in order to prevent the introduction and spread of alien species into South Africa’s protected areas.Conservation implications: Tourism is the main source of revenue for South African National Parks, and one of the organisation’s principal goals is to create a tourism management policy conducive to conservation. This research explores the potential role that tourists may play in the introduction of non-native species into a protected area, thereby providing novel information that could assist managers in the sustainable management of protected areas.

The Peninsula Shale Renosterveld of Devil's Peak, Western Cape: A study into the vegetation and seedbank with a view toward potential restoration

Peninsula Shale Renosterveld is a poorly understood and critically threatened vegetation type. Less than 13% of its original extent remains and the surviving fragments are restricted to the area surrounding the Cape Town city bowl. A substantial portion of Peninsula Shale Renosterveld is situated in the Groote Schuur Estate, currently conserved within the Table Mountain National Park. Due to a history of diverse land-use impacts what remains today is a complex mosaic of alien invasive species and indigenous vegetation in various states of degradation and to improve the conservation value restoration is required. However, it is imperative that prior to restoration initiation data is collected from the site. To enhance the understanding of the ecosystem drivers of Peninsula Shale Renosterveld with a view to evaluate restoration potential and inform future restoration initiatives a detailed analysis of four typical vegetation states found within the study area was undertaken. This was accomplished through a vegetation survey investigating different ‘states’ of the contemporary condition of the study area and an examination of the health of the seedbank through a burning and greenhouse experiment to ascertain whether it could prove a useful asset in future restoration initiatives. The results show how historical drivers have created a novel ecosystem with vegetation states ranging from relatively healthy Renosterveld vegetation, indigenous vegetation requiring intervention to maintain its integrity, and regions of the study area which are dominated by alien grasses and Pinus plantations. The seedbank diversity was found to be poor, dominated by alien ephemeral species and unlikely to assist in restoration efforts. Although certain areas may retain their ecological integrity through passive restoration, large swathes of the study area require active restoration to return the degraded vegetation to functional Peninsula Shale Renosterveld.

Which age group spends the most in a national park?

Age (and its changing structure amongst the wider population) is one of the most relevant aspects required to better understand and forecast the needs, interests and associated consumption behaviours of tourists. This research used age to investigate the expenditure patterns amongst a sample of visitors to the Table Mountain National Park (TMNP), South Africa. In March 2010, visitors to the TMNP were found to differ significantly from those at other parks, as they were younger and most of them were foreigners. This study found that younger visitors (18–29 years) were higher spenders when compared to those aged 30–49 years. As parks are generally visited by older people, this study showed the economic importance of the younger market. The research also made clear implications and recommendations for park management as to how to address these findings. Conservation implications: Conservation is dependent on funding. One of the main sources of income is tourism and tourism related activities. This research can assist marketers and managers to target the right markets in order to be more sustainable. This research also shows the importance of environmental education at an early age in order to grow awareness and to target the right markets.

The non-consumptive value of selected marine species at Table Mountain National Park: An exploratory study

This exploratory study aimed to determine firstly the non-consumptive value of five marine species (whales, the Great White shark, penguins, dolphins and seals) and secondly the socio-demographic and behavioural variables that influence willingness to pay to see these species. This was achieved by means of a structured questionnaire survey conducted at Table Mountain National Park, the largest urban national park in South Africa. The data consisted of 319 fully-completed questionnaires. These were analysed using factor analyses and Ordinary Least Squares (OLS) regression analysis. The results showed that the variables influencing willingness to pay differed from species to species, with the largest differences being found in behavioural rather than socio-demographic variables. In showing how much respondents were willing to pay to see the various species and which species they preferred, the results also highlighted the non-consumptive value of the species.

A decade of illegal fishing in Table Mountain National Park (2000–2009): trends in the illicit harvest of abalone Haliotis midae and West Coast rock lobster Jasus lalandii

Illegal fishing activities are reported to be on the increase in South Africa, including in its marine protected areas (MPAs). Research is presented on the nature and the scale of illegal fishing in Table Mountain National Park (TMNP) by analysing the numbers of abalone Haliotis midae and West Coast rock lobster Jasus lalandii confiscated from fishers operating in the park's marine protected area between 2000 and 2009. Data were collected from offence logbooks maintained by South African National Parks rangers and managers, the South African Police Services, and interviews with alleged or self-confessed illegal fishers. The research findings indicate that the annual numbers of illegally fished abalone and rock lobsters have increased significantly over time. Spatial analysis suggests that confiscations of abalone occur predominantly on the east coast of the park, whereas higher confiscations of illegally fished rock lobsters occur on the west coast. It is clear from this research that new and more efficient approaches will need to be designed and implemented to minimise illegal fishing in the TMNP MPA. Context-specific conservation targets that acknowledge and integrate social as well as developmental needs are required, and may be essential for limiting biodiversity loss in the longer term, which will ultimately ensure the success of fisheries management and conservation in TMNP.

The socio-economic impact of the Table Mountain National Park

This article will determine the socio-economic impact of South Africa’s largest urban national park, and the one that attracts the most visitors. Because national parks have more functions than mere conservation, the following questions arise: “What economic and social impacts are created by such parks?” and “How do communities benefit from allocating land for conservation?” Little research on this topic has been conducted in Southern Africa, and this research therefore contributes to our knowledge. Two surveys were conducted. One focused on the communities surrounding the park and the other on visitors to the park. A Social Accounting Matrix (SAM) determined the economic value. Results showed that, although the park attracts the most visitors, it does not generate the greatest income when compared to other national parks. Results concerning the community survey revealed that the surrounding communities have very positive perceptions, although they believe the impacts to be more economic than social. Problem areas were also identified.

Skeletal (in-)visibilities in the city – Rootless: a video sculptural response to the disconnected in Cape Town

This article follows the construction and outcome of a series of installations based on an artwork created by the author, a life-size replica of a human skeleton made of tree twigs and branches, which journeyed across central Cape Town on a day tour. The work drew on museums, heritage and cities research, seminars and colloquia at the University of the Western Cape that problematised memorialisation, land, landscape, tourism, human remains, memory, archive and silences in histories in Cape Town. In a collaboration with another artist, Kitty Dörje, the skeleton was performed and set up in installations at Table Mountain National Park, Iziko Museum, Prestwich Street Memorial, Rhodes Memorial and the Table Mountain view from Blouberg beach. Along the journey new connotations began to occur between the skeleton and the places visited, the skeleton performing as a linking device. The resulting short film, Rootless, combined poetry, visuals and music, and was dedicated to ‘the silenced and forgotten people of Cape Town.’ This article traces the experiential process of the construction of the artwork installations and the performance of the skeleton in different environments, as a creative research process. The skeleton artwork constructs visual and conceptual links between spaces and histories in the city. It is argued that this visually disturbs the material silencing and erasure of past and present communities through evoking plural perspectives and histories, thus raising questions on issues of representation in which landscape and artwork become alternative forms of archive.

Abiotic variables dictate the best monitoring times for the endangered Table Mountain stag beetle (Colophon westwoodi Gray 1832, Coleoptera: Lucanidae)

There is often a lack of basic ecological data needed to implement effective conservation management programmes for endangered arthropods. This is particularly true for the highly localized and rare Colophon, a genus of beetles of which all members are narrow range endemics of conservation concern. The genus is confined to the highest mountain peaks in the Cape Floristic Region of South Africa and each of the 17 known species is endemic to a particular mountain or range. We investigated the influence of selected abiotic variables on adult Colophon westwoodi activity in Table Mountain National Park, South Africa, which will aid the development of an effective monitoring programme. Weekly surveys conducted on Table Mountain showed that adult numbers peaked during early summer. Adults were active at dusk on clear days, although earlier when misty. Unexpectedly, relative humidity and air temperature had no significant effect on Colophon abundance, while illuminance was the most important predictor. Contrary to general consensus, C. westwoodi activity is not strictly crepuscular but also appears nocturnal. Thus, Colophon monitoring programmes need to be conducted in early summer after sunset and monitoring can continue later than previously assumed. Little is still known about C. westwoodi population size, area of occupancy, general behaviour and the impact tourists have on it, or indeed why the genus is restricted to mountain tops. Therefore this research is important for the design of monitoring protocols for this flagship species, while at the same time directing future research.

Moulding urban children towards environmental stewardship: the Table Mountain National Park experience

The environmental integrity of many urban protected areas in developing countries is at risk and the important mission to reach out to people living close to them provides a special opportunity to spread the conservation message. Guided visitation to urban national parks with the necessary and appropriate interpretation can contribute towards environmental education in general and can also be the point of departure in nurturing environmental stewardship. The research reported here focuses on the evaluation of a three-day nature-learning experience by schoolchildren to Table Mountain National Park. Data were collected through pre- and post-visit questionnaires and supplemented by informal discussions with learners and teachers. It was found that the environmental interpretive programme had a minimal impact on the learners’ environmental knowledge, it had a reasonable impact on the pro-environmental attitudes but the findings also indicated that the behavioural impacts were limited. Other important findings were related to behaviours of learners towards environmental issues in general and critical areas in simple pro-environmental behaviour that could be emphasised in future edutainment experiences to contribute more substantially towards moulding stewardship behaviour among young school children.

Evidence, Perceptions, and Trade-offs Associated with Invasive Alien Plant Control in the Table Mountain National Park, South Africa

Van Wilgen, B. W. 2012. Evidence, perceptions, and trade-offs associated with invasive alien plant control in the Table Mountain National Park, South Africa. Ecology and Society 17(2): 23. https://doi.org/10.5751/ES-04590-170223

The Management of Fire-Adapted Ecosystems in an Urban Setting: the Case of Table Mountain National Park, South Africa

Copyright: 2012 The authors. Ecology and Society, vol. 17(1), DOI: http://dx.doi.org/10.5751/ES-04526-170108

Two remarkable new species of Penicillata (Diplopoda, Polyxenida) from Table Mountain National Park (Cape Town, South Africa)

Two new species of the families Polyxenidae and Synxenidae, are described from Table Mountain National Park, South Africa. Propolyxenus squamatus sp. n. (Polyxenidae) has tergites I–X mostly covered by scale–shaped trichomes directed caudally, a character previously known only in Synxenidae. The structure of scale–shaped dorsal trichomes is different to that of the scales in Phryssonotus and Condexenus species. Phryssonotus brevicapensis sp. n. (Synxenidae) is the only known species of the genus Phryssonotus having 11 tergites, (including collum and telson) and 15 pairs of legs, as in Condexenus biramipalpus Nguyen Duy–Jacquemin, 2006. These two species therefore appear to occupy an intermediate position between Phryssonotus (12 tergites) and Polyxenoidea (maximum of 11 tergites).

Prioritising species of special concern for monitoring in Table Mountain National Park: The challenge of a species-rich, threatened ecosystem

Conservation requires that species are monitored to ensure the persistence of species and ecosystem processes. In areas with large numbers of threatened species, this can be a major challenge. Here we explore prioritising species of special concern on the Cape Peninsula, South Africa, conserved primarily in the Table Mountain National Park. With 307 terrestrial plant and animal species listed as threatened on the IUCN Red List (plus 208 as non-least concern) and 332 endemic to the Peninsula, it is impossible to monitor and manage all species with current resources. At a workshop of conservation managers and ecosystem and taxonomical specialists, 14 variables were incorporated into a simple scoring scheme to develop a priority listing of these species. Despite care to ensure that variables were independent, there was strong autocorrelation amongst biotic versus management variables. There was concern that biotic variables would be masked by management criteria, but this was not the case. We propose that monitoring should focus on as many top-scoring species as resources allow (including volunteers) and that setting a cut-off value for delimiting sensitive species should be eschewed. A major challenge is that many species are typical of lowland ecosystems, which are poorly represented in the national park. Although priority species for monitoring have been identified, this will need to be tempered with the monitoring costs and logistics of implementing the programme.Conservation implications: Owing to the large number of threatened and endemic species in the Cape Peninsula, it is impossible to monitor all species with current resources. Management must focus on ecosystem maintenance as species-focused management will inevitably result in conflict with other threatened species. Monitoring should focus on as many top-scoring species as resources allow. The costs and logistics of a monitoring programme still need to be worked out.

Balancing people and park: towards a symbiotic relationship between Cape Town and Table Mountain National Park

Tourism is not only an economic but also a social and political agent that affects a wider natural and socio-cultural environment. To be successful as a tool of poverty reduction, tourism must be seen as one dimension of a destination's economy and society. In the context of a world-class urban national park yielding major economic benefits for the Cape Town and Western Cape tourism economies, this paper focuses on a variety of symbiotic relationships existing between the people of Cape Town and the Table Mountain National Park (TMNP). First, the current literature is reviewed to provide a conceptual base for protected areas (PAs) within urban environments and to appraise the importance of the local community's appreciation of this natural resource base. Secondly, the wide user base of the TMNP is placed within its socio-economic context. Thirdly, two poverty-relief projects, Ukuvuku and Mountain of Jobs, are introduced to reflect on TMNP's commitments to biodiversity conservation and social responsibility. Fourthly, the value Capetonians place on being the custodians of this world-class natural heritage site is discussed. Lastly, this paper appeals to other cities in the developing world to manage and nurture salubrious relationships between PAs and their neighbours carefully.

Perceived exertion influences pacing among ultramarathon runners but post-race mood change is associated with performance expectancy

Objectives. This study investigated whether post-race mood changes among ultramarathon runners are associated with perceived exertion or the discrepancy between their actual and predicted performance times.Methods. Eight runners completed the Puffer ultramarathon, which is a challenging 73 km mountainous race across Table Mountain National Park in South Africa. Each runner completed a series of profile of mood state questionnaires (POMS) 2 days before the race (baseline), on the morning of the race (pre-race) and immediately after the race (post-race). Ratings of perceived exertion (RPE) were measured at 13 points during the race using the Borg 6-20 scale. The accuracy of performance expectationswas measured as the difference between runners’ actual and predicted race times.Results. Average completion time was 11:31:36±00:26:32 (h :mm:ss), average running speed was 6.4±2.2 km.hr-1 and averageRPE was 14.1±2.0. Increased POMS confusion was found before the race (33.30.7 v. 37.1±5.2, p=0.014; baseline v. pre-race). Post-race increases in POMS total mood disturbance (TMD) were found (168.3±20 v. 137.5±6.3, p=0.001; post race v. baseline) characterised by decreased vigour (43.3±4.0 v. 33.5±7.0, p=0.008; baseline v. post race), increased confusion (33.3±0.7 v. 38.5±4.8, p=0.006; baseline v. post race) and increased fatigue (37.8±4.8 v. 53.8±7.3, p=0.0003; baseline v. post race). A linear increase in RPE was found during the race (r=0.737, p=0.002).The magnitude of their post-race mood change (r=-0.704, p=0.026) was not found to be associated with runners’ average RPE but was found to be negatively correlated with accuracy of the performance predictions. A time series analysis indicated that POMS TMD would have taken 142±89 min to recover. Conclusions. The results show that RPE influences the wayultramarathon runners pace themselves more than performance expectancy but performance expectations have a greater influence on post-race mood. The magnitude of post-race mood change is associated with the extent of discrepancy between runners’ predicted and actual performance. This has implications for designing appropriate goals and pacing strategies for ultraendurance athletes.

Visitor perceptions of crime-safety and attitudes towards risk: The case of Table Mountain National Park, Cape Town

This paper investigates tourist perceptions of crime-safety and attitudes towards risk whilst visiting Table Mountain National Park (TMNP) in Cape Town in June and July 2008. The study examined survey data of 303 domestic and international tourists during their visit to TMNP. A linear regression analysis revealed that although visitors had concerns about their personal safety they are still likely to return to TMNP and recommend it to other people. In addition, visitor attitudes towards risk did not influence perceptions of crime-safety and its effect on their intentions to revisit or recommend TMNP. The results also show that respondent's individual characteristics such as age, nationality, and purpose of visit influenced their perceptions of crime-safety. Perceptions that TMNP is unsafe tended to increase with respondent's age. Respondents on holiday were more likely to perceive TMNP as safer than those on business or visiting friends and relatives. The study's findings add to the literature by offering more insight on tourist perceptions of crime-safety and attitudes towards risk and their impact on tourist behaviour. Various tourist-crime prevention measures to enhance visitor safety at national parks are also recommended to the tourism industry and law enforcement agencies.

Evaluating the invasiveness of Acacia paradoxa in South Africa

We present the first detailed survey of a population of Acacia paradoxa DC. (syn. Acacia armata R.Br.), Kangaroo Thorn, in South Africa. The species is listed under the Conservation of Agricultural Resources Act as a category 1 invasive plant and, until 2008, was being managed as part of Working for Water's general alien clearing operations. Acacia paradoxa is currently restricted to a small population (~ 11,350 plants over ~ 295 ha) on the northern slopes of Devil's Peak, Table Mountain National Park in the Western Cape. Its distribution is highly clumped, and at a local scale it has formed thick stands of up to 20 plants m − 2 . Using a bioclimatic model we predict that it has a large potential distribution in South Africa, especially along the southern coast. We confirmed the categorisation of A. paradoxa as a potential landscape transformer that requires immediate control by conducting a formal risk assessment using the Australian Weed Risk Assessment system. However, the population appears to be spreading slowly, and, while there is a significant seed-bank in some places (~ 1000 seeds m − 2 ), this is largely restricted to below the canopy of existing plants. Therefore, the population has not and likely will not rapidly spread in area, and so containment is feasible. Dedicated and thorough annual follow ups are required because plants can produce seeds when they are 1 year old and standard clearing operations have missed flowering plants.

The recent fire history of the Table Mountain National Park and implications for fire management

This paper provides an assessment of fire regimes in the Table Mountain National Park over the past four decades. We compiled a GIS database of all fires between 1970 and 2007 and analysed the fire regime in terms of the frequency, season and size of fires and the relationship between fire occurrence and fire weather. Most fires (90.5% of area burnt) occurred in summer and autumn, the ecologically acceptable season for fires. However, mean fire return intervals declined by 18.1 years, from 31.6 to 13.5 years, between the first and last decades of the record respectively. The area subjected to short (≤ six years) intervals between fires covered > 16% of the park in the last two decades of the record, compared to ~ 4% in the first two decades. A relatively small number of large fires dominated in terms of area burnt. Of the 373 fires recorded, 40 fires > 300 ha burnt 75% of the area, while 216 fires < 25 ha burnt 3.4% of the area. Fires occurred under a wide range of weather conditions, but large fires were restricted to periods of high fire danger. Prescribed burning was a relatively unimportant cause of fires, and most (> 85%) of the area burnt in wildfires. Areas subjected to short fire return intervals should be considered for management interventions. These could include the re-establishment of extirpated fire-sensitive species, the clearing of invasive alien plants and increased precautions for the prevention or rapid suppression of future accidental fires.

The roles of habitat features, disturbance, and distance from putative source populations in structuring alien plant invasions at the urban/wildland interface on the Cape Peninsula, South Africa

Natural areas are becoming increasingly fragmented and embedded in an urban matrix. Natural and semi-natural areas at the urban/wildland interface are threatened by a variety of ‘edge effects’, and are especially vulnerable to invasion by introduced plants, with suburban gardens acting as significant sources of alien propagules. Urban/wildland interfaces also provide access for humans, leading to various types of disturbance. Alien plant invasions are one of the biggest threats facing remaining natural areas on the Cape Peninsula, South Africa. The area provides an ideal opportunity to study the dynamics of invasions at the urban/wildland interface, since the largest natural area, the Table Mountain National Park (TMNP), is surrounded by the city of Cape Town. We explored invasion patterns in Newlands Forest (a small section of the TMNP) and detailed the roles of habitat features and distance from putative source populations in three main habitat types: natural Afromontane forest, riverine woodland habitats, and plantations of exotic pines ( Pinus radiata and P. pinaster). We also examined the role of disturbance in driving invasions in two of these habitat types (Afromontane forest and pine plantations). We hypothesized that alien richness and alien stem density would decrease with distance from the urban/wildland interface, and that alien richness and alien stem density would increase with increasing levels of human disturbance. Distance from putative source populations and levels of anthropogenic disturbance influenced alien richness in Newlands Forest but not alien stem density. Alien richness decreased significantly with distance from presumed sources in the pine habitat, and increased significantly with disturbance in the forest habitat. Percentage overstorey cover and soil pH were important environmental variables associated with alien plant species. A socio-economic approach is discussed as being the most effective approach to the management and prevention of alien plant species in Newlands Forest.