South Africa in the Antarctic Circumnavigation Expedition: a multi-institutional and interdisciplinary scientific project
- Authors: Halo, Issufo , Dorrington, Rosemary A , Bornman, Thomas G , De Villiers, Stephanie , Fawcett, Sarah
- Date: 2016
- Language: English
- Type: article
- Identifier: http://hdl.handle.net/10962/65428 , vital:28790 , https://doi.org/10.17159/sajs.2016/a0173
- Description: publisher version , The polar regions are more critically affected by climate change than any other region on our planet.1,2 On the Antarctic continent and in its surrounding oceans, the effects of climate change are likely to be dramatic,3 and include largescale catastrophic ice melt, loss of habitat and biodiversity, and global sea level rise. The ‘Southern Ocean’ refers to the region where Atlantic, Indian and Pacific Ocean waters come together to encircle Antarctica. These waters connect the different ocean basins by linking the shallow and deep limbs of the global ocean current system (‘overturning circulation’) and play a critical role in storing and distributing heat and carbon dioxide (CO2 ). The Southern Ocean thus regulates not only the climate of the Antarctic, but of the entire earth system.1,4 By extension, the capacity of the global ocean to ameliorate earth’s changing climate is strongly controlled by the Southern Ocean. Marine phytoplankton (microscopic plants inhabiting the sunlit upper ocean) convert CO2 (an inorganic form of carbon) dissolved in surface waters into organic carbon through photosynthesis. This organic carbon fuels upper trophic levels such as fish, mammals and birds, and a portion sinks into the deep ocean where it remains stored for hundreds to thousands of years. This mechanism, which lowers the atmospheric concentration of CO2 , is termed the ‘biological pump’.5 The efficiency of the global ocean’s biological pump is currently limited by the Southern Ocean, where the macronutrients (nitrate and phosphate) required for photosynthesis are never fully consumed in surface waters. In theory, increased consumption of these nutrients could drive higher organic carbon removal to the deep ocean, enhancing the oceanic uptake of atmospheric CO2 . Indeed, more complete consumption of Southern Ocean nutrients is a leading hypothesis for the decrease in atmospheric CO2 that characterised the ice ages.6 Despite the global importance of the Southern Ocean, knowledge of the controls on and interactions among the physical, chemical and biological processes operating in Antarctic ecosystems is limited, largely because of a scarcity of in-situ observational data, compounded by the challenge of integrating siloed scientific fields. Given predictions that diverse aspects of Southern Ocean physics and carbon biogeochemistry are likely to change in the coming decades, a transdisciplinary approach to studying Antarctic systems is critical.
- Full Text:
- Date Issued: 2016
The role of entomopathogenic fungi in the control of citrus pests in South Africa: cause for optimism
- Authors: Coombes, Candice A , Chartier-Fizgerald, Veronique C , Wiblin, Danielle , Dames, Joanna F , Hill, Martin P , Moore, Sean D
- Date: 2016
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/453480 , vital:75257 , ISBN 978-1-83768-091-7 , https://iobc-wprs.org/product/the-role-of-entomopathogenic-fungi-in-the-control-of-citrus-pests-in-south-africa-cause-for-optimism/
- Description: Citrus is a highly productive crop in South Africa, but it is damaged by a number of pests that result in yield loss and have the potential to limit market access. Maximum residue limits (MRLs) imposed by importing countries have driven the need for alternative control technologies, including the use of entomopathogenic fungi (EPF). Bioprospecting in citrus orchards and seven years of bioassay trials identified Beauveria bassiana G Ar 17 B3 and Metarhizium anisopliae G 11 3 L6 and FCM Ar 23 B3 as the most virulent fungal isolates. Preliminary trials with these three fungi against the arboreal pests, California red scale, Aonidiella aurantii (Maskell), citrus mealybug, Planococcus citri (Risso) and citrus thrips, Scirtothrips aurantii Faure, have been promising. False codling moth (FCM), Thaumatotibia leucotreta (Meyrick) is the most important citrus pest in South Africa and while considerable research has been conducted on controlling the insect on the tree, the soil borne stages of this insect have largely been ignored. After laboratory bioassays, the three fungal isolates were taken to field trials. All three isolates persisted for at least six months after application to the soil. A large scale field trial, showed that although all three isolates reduced FCM infestation, isolate B. bassiana G Ar 17 B3 performed best, recording a consistent 80% reduction in FCM infestation throughout the trial period. The results of nearly 10 years of research on the potential of EPFs in the control of citrus pests in South Africa are certainly cause for optimism.
- Full Text:
- Date Issued: 2016
20 Years of changes in media ownership: journalism now
- Authors: Rumney, Reg
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/454192 , vital:75324 , https://hdl.handle.net/10520/EJC175778
- Description: In reviewing the transformation of the news media in South Africa over the last 20 years, you might be tempted to think that nothing has changed.
- Full Text:
- Date Issued: 2015
Evolutionary retention of defensive lateral pedal glands in the smallest siphonariid limpet (Gastropoda: Pulmonata)
- Authors: Pinchuck, Shirley C , Allanson, Brian R , Hodgson, Alan N
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/443312 , vital:74107 , https://hdl.handle.net/10520/EJC183115
- Description: Despite its cryptic habitat and habits, light and transmission electron microscopy has revealed that like many other siphonariids Siphonaria compressa, the smallest species of this genus, possesses lateral pedal glands. The pear-shaped glands (about 120 µm long Ã? 70 µm maximum diameter) open via a pore, and are multicellular with three types of secretory cell that surround a central lumen. The glands of this minute pulmonate limpet are similar in structure to its larger relatives, suggesting that they are defensive in function.
- Full Text:
- Date Issued: 2015
New school meets old school: journalism education in Africa’s newest country
- Authors: du Toit, Peter
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/158691 , vital:40221 , https://hdl.handle.net/10520/EJC175767
- Description: South Sudanese journalists have a critical contribution to make in promoting peace, development and democracy in Africa's newest state, but many lack the training and skills to fulfill this potential.
- Full Text:
- Date Issued: 2015
Oxford dictionary of journalism:
- Authors: Amner, Roderick J
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/142656 , vital:38099 , DOI: 10.1080/23743670.2015.1041305
- Description: Tony Harcup is a self-confessed ‘hackademic’, a term which he defines in his Oxford dictionary of journalism as ‘a journalist who goes on to work in journalism education where they combine the roles of journalism (hack) and academic’ (p. 121). Harcup explains that hackademics perform this balancing act in the ‘hackademy’, a curious space within academe where journalism training intersects with Journalism Studies (a field of study which is nowadays often granted ‘upper case’ status), ‘sometimes with mutual respect and insight, sometimes with mutual suspicion and hostility’ (ibid.). And this tension is never far from the surface in many of the 1 300 definitions in this useful and absorbing dictionary.
- Full Text:
- Date Issued: 2015
Putting journalism education in its place-a critical pedagogy of place experiment: journalism education
- Authors: Mpofu, Nkosinothando
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/454857 , vital:75381 , https://hdl.handle.net/10520/EJC175768
- Description: The business models of legacy media organisations are under im-mense pressure from the corrosive power of online media. Business models lay out the preconditions for journalism organisations to survive and succeed and these in turn have implications for the skills and ca-pabilities that are seen as essential for the practice of journalism and therefore for the training of students who will be a good fit and be able to work in such (market-driven) environments. But several scholars have expressed dissatisfaction with this approach to journalism educa-tion.
- Full Text:
- Date Issued: 2015
Reflecting on patient-centred care in pharmacy through an illness narrative:
- Authors: Dowse, Roslind
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/156687 , vital:40038 , https://0-doi.org.wam.seals.ac.za/10.1007/s11096-015-0104-5
- Description: Patient-centred care (PCC) is rapidly adopting a central position in discussions on the quality of healthcare, with patient-centredness deemed essential to transforming the healthcare system. PCC speaks to the quality of patient-provider relationships and has been defined as an approach to providing care that is respectful of and responsive to individual patient preferences, needs, and values, while ensuring that patient values guide all clinical decisions. However its place within pharmacy practice is unclear and is as yet undefined, particularly in relation to pharmaceutical care. Through my personal illness narrative, I briefly explore the visibility and evidence of PCC in the pharmacy literature as well as from personal experience of pharmacy care, and find it lacking. I conclude that an integrated, seamless understanding of PCC and the use of shared language within the health professions is essential in successful teamwork with both the patient and with other health professions.
- Full Text:
- Date Issued: 2015
Rise and fall of apartheid: photography and the bureaucracy of everyday life
- Authors: Simbao, Ruth Kerkham, 1969-
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125910 , vital:35831 , https://doi.10.1080/02533952.2014.998052
- Description: The exhibition catalogue Rise and Fall of Apartheid is a valuable collection of photographic images that create, according to Enwezor, “a critical visualization and interrogation of […] [apartheid’s] normative symbols, signs and representation” (18). The catalogue focuses on African subjects as “agents of their own emancipation” (18), and contextualises South Africa’s anticipation of the end of apartheid within broader global changes in the late 1980s. Essays by Okwui Enwezor, Michael Godby, Achille Mbembe, Darren Newbury, Colin Richards, Patricia Hayes, Andries Walter Olifant, Rory Bester and Khwezi Gule are included in the catalogue, and are interspersed between photographic images that are grouped in chronological clusters: 1948–1959; 1960–1969; 1970–1979; 1980–1989; and 1990–1995.
- Full Text:
- Date Issued: 2015
Spawning and nest guarding of the river goby (Glossogobius callidus) from the Eastern Cape province of South Africa
- Authors: Wasserman, Ryan J , Vink, Tim J F , Woodford, Darragh J , Froneman, P William
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68144 , vital:29203 , https://doi.org/10.1111/aje.12228
- Description: Publisher version , Introduction: The River goby, Glossogobius callidus (Smith 1937), occurs naturally in rivers and the upper reaches of estuaries along the eastern seaboard of southern Africa (Whitfield, 1998; James et al., 2007; Wasserman, Strydom & Wooldridge, 2010). This fish species is among the most abundant of fishes in many river systems of the region and is considered an important predator in these habitats, feeding on invertebrates and small fish (Whitfield, 1998; Strydom & Neira, 2006; Wasserman, 2012; Wasserman et al., 2014). Despite this, ecological information on this goby is sparse and to date, no published records on the biology of the species exist. The urgent need for such information was recently highlighted in a study that identified G. callidus as a potentially invasive species, given its ability to rapidly establish in novel environments (Woodford et al., 2013). The present study therefore endeavoured to determine the reproductive guild to which G. callidus belong and describe aspects of their spawning. This was performed by closely observing wild caught, mature G. callidus in aquaria over a 25-day period.
- Full Text: false
- Date Issued: 2015
An improved larval diet for commercial mass rearing of the false codling moth, Thaumatotibia leucotreta (Meyrick)(Lepidoptera: Tortricidae)
- Authors: Moore, Sean D , Richards, G I , Chambers, Craig B , Hendry, Donald A
- Date: 2014
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/452206 , vital:75111 , https://hdl.handle.net/10520/EJC150955
- Description: False codling moth, Thaumatotibia leucotreta (Meyrick) (Lepidoptera:Tortricidae), is endemic to sub-Saharan Africa (Newton 1998). It is a pest of citrus (Newton 1998), stone fruit (Daiber 1978), macadamias (La Croix and Thindwa 1986), avocados (Erichsen and Schoeman 1992) and various other agricultural crops. All available control methods were recently reviewed by Moore and Hattingh (2012). Included amongst these is the use of granulovirus (Cryptophlebia leucotreta granulovirus (CrleGV)) sprays, inundative releases of egg parasitoids and the sterile insect technique (SIT). All of these require production of large numbers of T. leucotreta. CrleGV and the egg parasitoid, Trichogrammatoidea cryptophlebiae (Nagaraja) (Hymenoptera: Trichogrammatidae), are produced in vivo (Moore et al. 2011) and for SIT, the sterilized adult male moth is the product (Hofmeyr et al. 2005).
- Full Text:
- Date Issued: 2014
Digital disruption: some instagrams
- Authors: Garman, Anthea
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144558 , vital:38357 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC159516
- Description: I'm going to shamelessly pinch someone else's language to think about the changes and challenges of this media moment we are living through and take the theme for the Mennel Media Exchange (MMX14), organised by Laurie Bley of Duke University and Patrick Conroy of eNCA and held in Johannesburg in July. “ Digital disruption" doesn't fallen into the neat pessimism or optimism so emblematic of our times but does say forcefully that we are all on uncertain ground and need to reconfigure our ways of doing and being in media making, media managing and in education.
- Full Text:
- Date Issued: 2014
Interaction of multiple stressors: vulnerability, coping and adaptation within the context of climate change and HIV/AIDS in South Africa: Investigating strategies to strengthen livelihoods and food security and build resilience
- Authors: Hamer, Nicholas G , Shackleton, Sheona E
- Date: 2014
- Subjects: Climatic changes -- Economic aspects -- Eastern Cape (South Africa) Climatic changes -- South Africa Climatic changes -- Social aspects -- South Africa
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/50065 , vital:25956
- Description: Government policy development and implementation is often designed to address different sectors of society in isolation, so social, economic and environmental issues are considered as being distinct from one other. Recently it has been acknowledged that 'working in silos' is not conducive for good governance and so efforts have been made for better co-ordination between different government departments and different spheres of government. Our research findings show the knock on effects of one problem into other areas of people's lives, highlighting why it is vital for policies and programmes to be far better co-ordinated. The different challenges and stresses that people face in their lives interact with one another in complex ways, undermining their capacity to cope with and adapt to future changes, such as those expected under climate change.
- Full Text:
- Date Issued: 2014
Isn’t it time to start thinking about ‘developing’ academic developers in a more systematic way?
- Authors: Quinn, Lynn , Vorster, Jo-Anne E
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/66546 , vital:28961 , https://doi.org/10.1080/1360144X.2013.879719
- Description: publisher version , There is no defined route to becoming an academic developer. The research on pathways into the field (e.g. Kensington-Miller, Brailsford, and Gossman, 2012; McDonald, 2010; McDonald and Stockley, 2008) shows that in most cases ‘serendipity and chance played a role’ (McDonald, 2010, p. 40). Moreover, induction into academic development (AD) is often ad hoc, haphazard, and informal. Due to the changing higher education (HE) context, the field has grown exponentially and in many countries now plays a central role in institutions. This has generated increased demand for knowledgeable and competent developers that are able to contribute towards solving some vexing problems in contemporary HE. Current recruitment and induction processes of new developers do not necessarily meet this demand. In light of the above, we pose the question: given the changing context of HE and the field of AD, is it not time for us to induct newcomers into the field more systematically? As Kensington-Miller et al. (2012) suggest, we should not leave the induction of the next generation of developers to chance. We suggest that one way of ensuring appropriate induction is through a formal course for developers. Difficulties for newcomers to the field are illustrated by Kensington-Miller et al. (2012) when they report seeking ‘top tips’ at a HERDSA conference. We do not dismiss informal learning at conferences or the role of mentoring, coaching, apprenticeship, and so on, in inducting developers, nor do we minimise the benefits of relatively structured processes such as fellowship programmes, workshops, and postgraduate qualifications in related fields. However, these ways of induction may not offer novices the structured and systematic developmental opportunities needed to become developers able to fulfil varied, complex, and sometimes contradictory roles.
- Full Text: false
- Date Issued: 2014
Liberation movements in power: party and state in southern Africa
- Authors: Helliker, Kirk D
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144688 , vital:38370 , DOI: 10.1080/21528586.2014.960705
- Description: In Liberation movements in power, Roger Southall provides a rich and refined account of political transformation in three ex-settler colonies in southern Africa, namely, South Africa, Namibia and Zimbabwe. In particular, he focuses on their former hegemonic national liberation movements, namely, the African National Congress (ANC) in South Africa, the South West African People’s Organisation (SWAPO) in Namibia and the Zimbabwe African National Union (ZANU) – now ZANU-Patriotic Front (ZANU-PF) – in Zimbabwe, their metamorphism into political parties and party machines, and their ‘capture’ of state power as the dominant political party subsequent to the end of white settler colonialism and the emergence of non-racial democracy. The general conclusion is that democratic ideals and procedures have become subordinated to the dictates of authoritarian restructuring.
- Full Text:
- Date Issued: 2014
Ordinary people and the media: the demotic turn
- Authors: Garman, Anthea
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159880 , vital:40352 , DOI: 10.1080/02560054.2014.886661
- Description: In this latest book, Graeme Turner, who we have come to know as a thoughtful, perceptive and questioning cultural studies theorist, investigates what the crucial underlying shift is in the relation between the media and the people. This shift is evidenced by the increasing visibility of ordinary people (and their experiences and opinions) in what we consume. At the outset he sums up what he sees as a structural move from media as ‘mediator or perhaps a broadcaster of cultural identities’ to ‘translator or even an author of identities’ (p. 3).
- Full Text:
- Date Issued: 2014
Patient-centred pharmacy: reflections from the patient-academic pharmacist interface
- Authors: Dowse, Roslind
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/156709 , vital:40040 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC163769
- Description: This month, the Pharmaceutical Society of South Africa (PSSA) pays tribute to a remarkable woman, who is willing to share her experiences with fellow pharmacists. Ros Dowse told her story at the South African Association of Hospital and Institutional Pharmacists and PSSA conferences, and will share it at the Academy conference as well. Ros, we are proud to be part of your "family", and are humbled by your courage and inner strength.
- Full Text:
- Date Issued: 2014
Seamus Heaney in Grahamstown tribute
- Authors: Van Wyk Smith, Malvern
- Date: 2014
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/458311 , vital:75731 , https://hdl.handle.net/10520/EJC156479
- Description: Seamus Heaney, internationally celebrated poet of Ireland and winner of the Nobel Prize in 1995, died in Dublin on Friday 30 August 2013, aged 74. He and his wife Marie paid a memorable visit to South Africa in 2002 and what follows is a short account of the occasion.
- Full Text:
- Date Issued: 2014
Teaching Without Technology
- Authors: Machanick, Philip
- Date: 2014
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/439238 , vital:73558 , https://homes.cs.ru.ac.za/philip/Publications/_SACLA/teachWOtech-2014.pdf
- Description: Technology is touted as a solution to problems in education. But is it? I report here on experiences with dropping use of slides in lectures and returning to working on the board. The apparent result is more interactive, engaged classes. Unfortunately there are too many other variables to make the experiences here definitive. The purpose of this paper is to provoke discussion on whether technology is overused in teaching when the goals of improving student engagement and general effectiveness of learning can be met many ways. Technology is not necessarily bad, but making it the starting point risks locking out nontechnological options.
- Full Text:
- Date Issued: 2014
Why care about sharing?: Shared phones and shared networks in rural areas: African trends
- Authors: Dalvit, Lorenzo
- Date: 2014
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/158639 , vital:40217 , https://hdl.handle.net/10520/EJC159490
- Description: Tomi Ahonen, credited with introducing the concept of mobile as the seventh mass media, notes that the arrival of the mobile phone was a God-send for advertisers, as it is the only mass medium where the audience can be accurately identified. Conversely, the pervasiveness of location-aware, multi-sensor, permanently on and constantly connected devices raised privacy concerns about carrying "little brother" in your pocket at all times. One of the distinctive characteristics of mobile phones, setting them apart from all previous media, is the fact that they are personal devices: 60% of married users would not let their spouse access their mobile phone and, not surprisingly, teenagers are even less inclined to let their family members have a look at their device. Things have not always been so. In South Africa, research conducted among university students revealed that for many a hand-me-down phone the size of a brick and shared with siblings was their first mobile device.
- Full Text:
- Date Issued: 2014