Northeastern Namibia Research Articles

The making of a conservation landscape: the emergence of a conservationist environmental infrastructure along the Kwando River in Namibia's Zambezi region

AbstractThe Kwando Basin of north-eastern Namibia is firmly embedded in current national and international conservation agendas. It is a key part of the world's largest transboundary conservation area, the Kavango–Zambezi (KAZA) Transfrontier Conservation Area, and the home of seven community-based conservation areas (conservancies) and three smaller national parks (Mudumu, Nkasa Rupara and Bwabwata). While conservation agendas often start from the assumption that an authentic part of African nature is conserved as an assemblage of biota that has not been gravely impacted by subsistence agriculture, colonialism and global value chains, we show that environmental infrastructure along the Namibian side of the Kwando Valley has been shaped by the impact of administrative measures and the gradual decoupling of humans and wildlife in a vast wetland. The way towards today's conservation landscape was marked and marred by the enforced reordering of human–environment relations; clearing the riverine core wetlands of human habitation and concentrating communities in narrowly defined settlement zones; the suppression of specific, wetland-adapted subsistence practices; and the elimination of unwanted microbes with the help of insecticides. The interventions in the ecosystem and the construction of an environmental infrastructure have created a unique conservation landscape in the Namibian Zambezi region, which provides the foundation for its popularity and success.

Costs of elephant crop depredation exceed the benefits of trophy hunting in a community‐based conservation area of Namibia

AbstractThe Kazavango‐Zambezi Transfrontier Conservation Area is home to the largest remaining elephant population in Africa but is also the site of high levels of human‐elephant conflict through crop depredation. Offsetting the costs of coexisting with elephants in this area is critical to incentivizing elephant conservation within community‐based conservation (CBC) areas, and trophy hunting has long been touted as a method for generating revenue for communities from wildlife. However, the idea that sustainable elephant hunting can offset the costs of crop depredation remains largely untested. We combined household survey data, financial records, and elephant population data to compare the potential benefits of sustainable hunting with the costs of crop depredation in a CBC area in northeastern Namibia. We determined that sustainable trophy hunting only returns ~30% of the value of crops lost to the community and cannot alone offset the current costs of coexistence with elephants. As core institutions supporting the practice of conservation, CBC efforts must promote community management capacity to combine multiple wildlife‐based income streams and build partnerships at multiple scales of governance to address the challenges of elephant management.

Continuity and Change in Gender Relations within the Contract Labour System in Kavango, Namibia, 1925–1972

The gendered historical investigation of migrant labour in Namibia (and southern Africa more broadly) has rightly considered the ways in which women left behind in the sending areas were obliged to take on additional agricultural duties in the absence of men. This has been viewed by some scholars as a form of material exploitation of women and a potential subsidy to white employers in these settler colonial spheres. While there is some validity to these claims, the relationship between the sending areas and the work site was not simply a material one, and contract/migrant labour recruiting systems entered spaces with existing gendered cultural repertoires concerning how to deal with absent men. The significance of these cultural frameworks is worthy of additional empirical, comparative and theoretical investigation. Through the use of oral interviews supplemented by archival materials, this article discusses these issues in the context of Kavango, north-eastern Namibia, which, for much of the 20th century, was a major source of contract labourers to the colonial economy in what was then South West Africa. The article argues that colonialism and labour recruiting schemes built upon and transformed existing pre-colonial cultural frameworks such as ‘the people’s child’, women’s observance of taboos and a local conception of ‘home’. This article further posits that the maintenance of this migrant labour system was dependent upon its integration into local worldviews.

Interactive Video Technology as A Mode of Teaching: A Qualitative Analysis of Nursing Students’ Experiences at A Higher Education Institution in Namibia

Interactive video technology (IVT) remains one of the common modes of teaching utilised by various higher education institutions (HEIs) across the globe with an aim of catering to ever-increasing educational demands. The objectives of this study were to explore and describe the experiences of nursing students on the use of IVT as a mode of teaching General Nursing Science with a view to describing the aspects that affect their learning. The study was conducted at one of the satellite campuses of an HEI located in north-eastern Namibia. In this study, a qualitative, exploratory and descriptive design was used. A total of fifteen nursing students from the Faculty of Health Sciences in the School of Nursing, purposively selected from the population of fourth-year nursing students who were taught via IVT, participated in the study. Data were collected using semi-structured interviews and analysed by means of content analysis. Three main themes subsequently emerged: nursing students experienced the IVT as a beneficial mode of teaching; the use of IVT as a mode of teaching resulted in certain negative experiences for nursing students; and the presence of certain strategies that strengthen IVT as a teaching mode. The study identified both positive and negative student experiences resulting from the use IVT as a mode of teaching. It was therefore concluded that the School of Nursing should continue to use IVT as a mode of teaching, but should put certain interventions in place to strengthen it and to make the learning environment more favourable for students.

Abundant herds: Accumulation, herd management, and land-use patterns in a conservation area

North-eastern Namibia’s Zambezi Region became part of the world’s largest transboundary conservation area in the early 2010s: the Kavango–Zambezi Transfrontier Conservation Area. While wildlife numbers and wildlife-based tourism are increasing rapidly in this conservation zone, cattle herds and livestock-based economies are expanding as well. More than conservation and wildlife-based tourism, cattle husbandry is a project of the local population and of the local elite in particular. Cattle are an expression of wealth and are regarded as a means of saving. At the same time, cattle can be used to plough fields, pull sledges, and produce milk and meat for home consumption and also for sale. Cattle also fulfil important social functions; they are necessary for bridewealth payments and are used in cattle loans with which wealthy herd owners furnish poorer relatives. Recent investments into self-financed boreholes have opened new rangelands for the wealthy, while the expansion of conservation areas in the region’s wetlands and the establishment of wildlife corridors have rendered other rangelands challenging due to prohibitions and increasing incidences of human–wildlife conflict. The needs and practices of expanding cattle husbandry often conflict with the demands and challenges of conservation and conservation-related tourism.This contribution describes the emergence and expansion of cattle husbandry in a region which had hardly any cattle before the 1960s and which has seen a major expansion of conservation areas and a subsequent refaunation since the 1980s. The contribution analyses current cattle ownership patterns and management practices. We argue that livestock husbandry and conservation have to be considered together and not as competing land-use strategies that need to be kept apart but as separate visions and aspirations of different stakeholders relating to the same landscape.

How much remains? Local value capture from tourism in Zambezi, Namibia

High hopes are pinned on tourism and its catalytic potential to foster growth in remote rural areas. In the Zambezi region of northeastern Namibia, tourism plays a key role in the design of community-based natural resource management (CBNRM) programmes for nature conservation. Local communities form conservancies, small village-based entities of bottom-up nature conservation activities. These conservancies are granted rights for the use of natural resources, which are then transferred to tourism investors and trophy-hunting companies. Thus, conservancies partly determine tourism’s developmental outcomes on a local level. By applying a global production network (GPN) approach, the objective is, first, to assess how much of the turnover generated in the Zambezi region remains in the region and, second, to examine the extent to which conservancies, as newly formed local institutions, enable communities to capture value from tourism. A mixed-methods approach is applied, using a business survey, qualitative interview data and financial reports which allow a calculation of value capture. Roughly 20% of the value generated by the tourism industry in the Zambezi region is captured locally. In addition, conservancies play a key role in the GPN, acting as hinges between the local and the global: conservancies are involved in the production of the resource, mediate in strategic coupling processes and use regulatory and bargaining power to capture value. Conservancies therefore have the potential to increase local gains from tourism. On the one hand, these results underline the importance of local institutions for value capture in GPN analysis. On the other hand, as local linkages are limited and the level of local ownership is low, policies are needed that ensure the participation of local residents beyond direct transfer payments from private enterprises to communities.

Night Shift as a Clinical Placement Strategy: A Qualitative Analysis of Nursing Students’ Experiences in North-Eastern Namibia

Clinical placement strategies facilitate clinical learning, which students and nurse educators consider to be a foundation in nursing training; they gain the ability to develop expected competencies. Night shift is one of the clinical placements used in nursing education, yet many studies globally only focus on students’ experiences of clinical placement during the day shift. It is not explicitly known how the nursing students in north-eastern Namibia experience the night shift as part of their clinical placement strategies. The focus of this article is on exploring and describing how nursing students in north-eastern Namibia have experienced the night shift as part of their clinical placement. The study was conducted at the university campus located in north-eastern Namibia. A qualitative approach, with phenomenology, was used as research design. Data were collected via focus group discussions with 18 nursing students who were purposively selected until data saturation was reached. Data analysis followed content analysis. The trustworthiness of the study was ensured using the criteria of Lincoln and Guba. The ethical principles of justice, beneficence, confidentiality, anonymity, and non-maleficence were also considered. Three main themes emerged: nursing students experienced the night shift as a beneficial clinical placement; there were negative experiences for nursing students when the night shift was used as a clinical placement; and there are strategies to strengthen the night shift as a clinical placement strategy. Nursing students in north-eastern Namibia have both positive and negative experiences of night shift clinical placement. Therefore, the School of Nursing should continue to use night shift as a clinical placement strategy, provided interventions are put in place to strengthen it and to make the learning environment more conducive.

Spatiotemporal responses of a desert dwelling ungulate to increasing aridity in North-eastern Namibia

Ungulates are famous for large-scale movements in response to local and regional changes in plant productivity. However, it is poorly understood how non-migratory ungulates respond towards shortages in plant availability.In the arid Kunene Region of Namibia, we studied the variation of home ranges and habitat use of gemsbok during a period of severe drought that led to a critical food shortage. We then related the spatiotemporal behaviour of gemsbok to relative plant greenness and local plant productivity, using local Normalized Differenced Vegetation Indices (NDVI) as a proxy, and to satellite images to assess habitat types and topography.Core home range sizes of gemsbok did not vary with decreasing local NDVI values, while total home-ranges increased with decreasing NDVI values. Gemsbok responded to resource fluctuations by using a combination of habitats differing in plant productivity, topography and vegetation cover. Gemsbok increased the number of habitats used when NDVI values decreased. Individuals remained non-migratory even during the period of peak drought.Non-migratory gemsboks are capable of exploiting local resources efficiently by adjusting their habitat use, when facing declining resources and unpredictable food shortages. Our study provides important information on the habitat use of gemsbok for the sustainable management of populations in arid environments.

Structure of the breeding bird community along the urban gradient in a town on the Zambezi River, north-eastern Namibia

A simplified mapping method was employed to quantify avian assemblages in three study plots in a modified riparian forest on the Zambezi River in the town of Katima Mulilo, NE Namibia. The plots were arranged along the urbanization gradient: plot A (34 ha; 0–1 km from centre of the town), plot B (27 ha; 1–2 km from the centre), and plot C (24 ha; 2–3 km from the centre; periphery). In total, 51 breeding bird species were recorded in all three plots. Five of them, Columba livia domestica, Passer diffusus, Pycnonotus tricolor, Streptopelia senegalensis, and Uraeginthus angolensis were classified as dominant species. The cumulative dominance was 69.9%. The overall population density of all breeding species increased with the urban gradient. In general, granivorous birds were by far the most numerous feeding guild comprising 68.7% of all breeding birds. Two other guilds, frugivorous and insectivorous birds, together comprised 28.9%. While the proportion of granivores decreased along the urban gradient from the town centre to its periphery, the proportion of insectivores increased. The proportion of birds nesting in/on buildings decreased, and the share of tree/shrub- and hole-nesting birds increased along the urban gradient. The diversity indices were relatively high in all plots. They decreased only slightly along the urban gradient (from the centre to the periphery). However, the Pielou’s Evenness Index was comparatively low, but on a slight increase along the urbanization gradient. The Sorensen Similarity Index was low, but the values of the three studied plots were very similar.

Historical Trajectory in Vegetation Cover in Northeastern Namibia Based on AVHRR Satellite Imagery (1982–2015)

The negative impact of the reduction of vegetation cover is already being felt in the Zambezi Region in northeastern Namibia. The region has been undergoing various land cover changes in the past decades. To understand the historical trend of vegetation cover (increase or decrease), we analyzed 8-km resolution Global Inventory Monitoring and Modeling Studies (GIMMS) from the Advanced Very High Resolution Radiometer (AVHRR) and 0.25° × 0.25° (resampled to 8 km) resolution Global Precipitation Climatology Center (GPCC). We used the Time Series Segmented Residual Trends (TSS-RESTREND) method. We found that the general trajectory of vegetation cover was negative. Pixel-wise analysis and visual interpretation of historical images both revealed clear signs of vegetation cover change. We observed a single breakpoint in the vegetation trajectory which correlated to the 1991–1992 drought in southern Central Africa. Potential drivers of land cover change are the (il)legal expansion of subsistence farming, population growth, and wood extraction. These findings will serve as a reference for decision makers and policymakers. To better understand the human-induced land cover change at the micro scale and sub-regional level, we recommend using higher resolution remote sensing datasets and historical documents to assess the effect of demographic change, disease, civil unrest, and war.

Species succession and the development of a lacustrine fish community in an ephemeral lake.

Here, we present a gillnet survey of Lake Liambezi a 370 km2 shallow ephemeral floodplain lake situated in north-eastern Namibia, which is fed irregularly by the upper Zambezi and Kwando Rivers during years of high flooding. The lake dried up in 1985 and, with the exception of sporadic minor annual inundation events, remained dry until 2007. We describe the temporal succession of fish species over an 8 year period from initial inundation 2007 to maturation in 2014. The succession of the fish community did not follow the typical pattern of opportunistic strategists during colonisation, to periodic strategists that are eventually succeeded by equilibrium strategists. Instead, the evolution of the fish community was characterised by three distinct phases. The first phase involved the inundation and colonisation of the lake in 2007, followed by its decline until the floods that filled the lake in 2009. During this phase the lake was colonised by fishes from the adjacent upper Zambezi and Chobe River floodplains. Fish communities predominantly comprised floodplain specialists including the barbs Enteromius paludinosus and Enteromius poechii, the mormyrid Marcusenius altisambesi and catfishes Schilbe intermedius and Clarias gariepinus. The filling of the lake in the March 2009 floods marked the beginning of the second, successional phase. The barbs declined in abundance and the alestid Rhabdalestes maunensis underwent explosive population growth between 2009 and 2010, but populations crashed equally rapidly and were replaced by Brycinus lateralis which, together with S. intermedius went on to dominate the fish community 2011-2014. Larger, slower growing tilapiine cichlids increased steadily in abundance and became the dominant components in a 2700 t y-1 artisanal fishery that developed on the lake. The fish community in the ephemeral Lake Liambezi is clearly influenced by numerous factors including connectivity, lake level fluctuations, competition and the effects of fishing, which may disrupt typical succession processes in floodplain ecosystems.

Seasonal variation in waterbird assemblage in the Mahango Game Reserve, north-eastern Namibia

There are few African studies on seasonal changes in the waterbird assemblages in river ecosystems. Tropical freshwater ecosystems are regarded as more stable habitats over the year than terrestrial ones. The same could be expected in regard to the bird fauna associated with such ecosystems. In order to test if waterbird asembalges followed the stable ecosystem paradigm a study was undertaken in the Okavango River, in the Mahango Game Reserve, north-eastern Namibia. Counts of all waterbirds were conducted in wet and dry seasons during 2001–2006. In total, 88 waterbird species were recorded. In wet seasons the number was slightly lower (N = 75) than in dry seasons (N = 78) (chi-square test: χ2 = 0.06; p > 0.05). The total number of individuals of all resident species recorded in wet seasons was unexpectedly much lower in wet (N = 9 979) than in dry seasons (N = 15 501) (chi-square test: χ2 = 1 196; p < 0.01). In wet seasons, Collared Pratincole, Blacksmith Lapwing, African Openbill Stork and African Darter dominated (58.8%), while in the dry season: White-faced Duck, Spur-winged Goose, African Skimmer, African Reed Cormorant, African Darter and Squacco Heron contributed 60.8% to the overall abundance. Diversity indices were similar in both seasons.

Using parasite genetic and human mobility data to infer local and cross-border malaria connectivity in Southern Africa.

Local and cross-border importation remain major challenges to malaria elimination and are difficult to measure using traditional surveillance data. To address this challenge, we systematically collected parasite genetic data and travel history from thousands of malaria cases across northeastern Namibia and estimated human mobility from mobile phone data. We observed strong fine-scale spatial structure in local parasite populations, providing positive evidence that the majority of cases were due to local transmission. This result was largely consistent with estimates from mobile phone and travel history data. However, genetic data identified more detailed and extensive evidence of parasite connectivity over hundreds of kilometers than the other data, within Namibia and across the Angolan and Zambian borders. Our results provide a framework for incorporating genetic data into malaria surveillance and provide evidence that both strengthening of local interventions and regional coordination are likely necessary to eliminate malaria in this region of Southern Africa.

"You’re a Trickster”

The trickster has held a prominent place in the study of folklore, as much as it has been central to anthropological understandings of egalitarianism. In both, the trickster embodies an insoluble tension between the repressed, amoral desires of the individual and the moral demands of social life. This tension, so it goes, is visible in the ambiguity of the figure—a protean indeterminate being, neither good nor bad. Among the Jú|’hoànsi of northeastern Namibia, the trickster is similarly ambiguous. The figure conveys not a clash of values, but rather the doubt and uncertainty people feel toward those with whom they share resources, or about different ways of sharing and how they might relate to one another. This article approaches such uncertainty through a focus on the mocking phrase “you’re a trickster” and the moral discourses that accompany it.

The Ethnoarchaeology of Ambush Hunting: A Case Study of ǂGi Pan, Western Ngamiland, Botswana

This paper considers a specific kind of hunting strategy, ambush hunting, employed by Ju/’hoansi San who reside in northwestern Botswana and northeastern Namibia. We examine this hunting technique from ethnoarchaeological, archaeological, historical, and ethnographic perspectives. Data are drawn from an analysis of 14 blinds at ǂGi Pan on the Botswana-Namibia border. These hunting blinds were mapped and two were excavated. Our methods included having Ju/’hoansi show us how they constructed blinds. We also conducted interviews of individuals who constructed and utilized the blinds. Based on this information, we assess the structure, distribution, morphology, contents, function, size, timing of use, and reasons for placement of these specialized hunting facilities. Conclusions are drawn concerning the utilization of ambush hunting and its social, economic, environmental, and technological significance in the northern Kalahari.

Relationships between the Livelihood of Local Residents and Vegetation in Bwabwata National Park, Northeastern Namibia

Relationships between the Livelihood of Local Residents and Vegetation in Bwabwata National Park, Northeastern Namibia

The Neoproterozoic Hüttenberg δ13C anomaly: Genesis and global implications

The Neoproterozoic Hüttenberg Formation in northeastern Namibia records a remarkable δ13Ccarb positive excursion with a sustained plateau of values up to +12‰ (i.e., the Hüttenberg anomaly). High-resolution chemostratigraphic analyses of drill core samples spanning the upper Elandshoek and Hüttenberg formations reveal multiple new observations: (1) overall high but oscillatory δ13Ccarb values; (2) δ18Ocarb values ranging from −8‰ to −2‰; (3) significant enrichment of 13C in organic carbon and a broad co-variation between δ13Ccarb and δ13Corg; (4) a profound negative excursion in δ34Spyrite from +30‰ to −10‰; (5) an overall inverse δ13C–δ34S relationship; and (6) 87Sr/86Sr values down to 0.7074 in limestone samples. The new data suggest that the Hüttenberg anomaly records dynamic fluctuations in marine redox conditions, which may include an oxygenation event during the height of the δ13Ccarb positive excursion and a deoxygenation event at its termination. The δ34Spyrite negative excursion suggests the buildup of the marine sulfate reservoir, likely due to enhanced pyrite oxidation during the oxygenation event. The δ34Spyrite increase at the end of the Hüttenberg anomaly may result from a seawater sulfate concentration drawdown towards pre-anomaly conditions. On one hand, the Hüttenberg anomaly may reflect restricted basin signals that are deviated from the Ediacaran open ocean; on the other hand, the Ediacaran Hüttenberg anomaly, together with the Cryogenian δ13Ccarb positive excursions, suggests a stepwise pattern of the Neoproterozoic Oxygenation Event. Both local and global environmental factors may have contributed to the Hüttenberg anomaly. The Hüttenberg anomaly therefore represents a local enhancement of global oxygenation signals. Our data support the emerging view that the Neoproterozoic Oxygenation Event may have facilitated the evolution of early life at that time.

Moving towards malaria elimination: trends and attributes of cases in Kavango region, Namibia, 2010–2014

Setting: Kavango, a 'moderate' transmission risk region located in north-eastern Namibia, borders Angola, a country with higher malaria transmission levels. Objective: To determine 1) the trends in malaria incidence between 2010 and 2014 in Kavango, 2) the socio-demographic and clinical characteristics of confirmed cases in 2014, and 3) associated risk factors of cases classified as imported. Design: This was a retrospective study of malaria case investigation forms conducted in all 52 public health facilities in 2014. Incidence was derived from aggregate routine surveillance data from the Health Information System (HIS). Results: During the 5-year study, incidence fell from 53.6 to 3.6 cases per 1000 population, then increased again to 47.3/1000. Fifty-five per cent of cases were males, and 49% were aged between 5 and 17 years. Of the 2014 cases, 23% were imported, and were associated with higher odds of severe malaria (adjusted odds ratio [aOR] 1.8; 95%CI 1.01-3.29), not having long-lasting insecticide treated nets (aOR 2.1, 95%CI, 1.3-3.4) and not receiving insecticide residual spraying (aOR 3.2, 95%CI, 2.1-5.1). Conclusion: Sporadic outbreaks in the 5-year period posed a threat to malaria elimination. Better targeting of vector control interventions, strong cross-border collaboration and robust health promotion will be key to achieving malaria elimination.

Diet of sympatrically breeding Southern Carmine Bee-eater Merops nubicoides and White-fronted Bee-eater Merops bullockoides

The Southern Carmine Bee-eater Merops nubicoides and White-fronted Bee-eater Merops bullockoides are insectivore, cavity-nesting bird species, both of which occur in the Zambezi Region, north-eastern Namibia. I examined there the diet composition of these species by an analysis of prey remnants. The Southern Carmine Bee-eater chick's diet consisted of exclusively insects, represented by seven orders. The most numerous were orthopterans and beetles (40.9% and 26.1%, respectively; n = 582 prey items). Hymenopterans (18.7%) and bugs (12.9%) supplemented the diet, whereas dragonflies (Odonata) and moths (Lepidoptera) were preyed only occasionally. In the diet of the White-fronted Bee-eater, nesting at the same site, beetles were the most important prey (81.2% of all 101 prey items identified), with scarabaeids comprising more than half of the beetle diet. In comparison with the White-fronted Bee-eater, a lower proportion of beetles, but much larger proportion of orthopterans were recorded in the diet of the Southern Carmine Bee-eater. In both bee-eater species, hymenopterans appear to be less important than was expected. The essential difference in the proportion of main prey groups recorded in Southern Carmine and White-fronted Bee-eaters breeding at the same site may represent a shift in food niche due to both temporal segregation in breeding, and differences in food preferences (feeding sites).

The timing, two-pulsed nature, and variable climatic expression of the 4.2 ka event: A review and new high-resolution stalagmite data from Namibia

The climatic event between 4.2 and 3.9 ka BP known as the “4.2 ka event” is commonly considered to be a synchronous global drought that happened as one pulse. However, careful comparison of records from around the world shows that synchrony is possible only if the published chronologies of the various records are shifted to the extent allowed by the uncertainties of their age data, that several records suggest a two-pulsed event, and that some records suggest a wet rather than dry event. The radiometric ages constraining those records have uncertainties of several decades if not hundreds of years, and in some records the event is represented by only one or two analyses. This paper reports a new record from Stalagmite DP1 from northeastern Namibia in which high 230Th/232Th activity ratios allow small age uncertainties ranging between only 10–28 years, and the event is documented by more than 35 isotopic analyses and by petrographic observation of a surface of dissolution. The ages from Stalagmite DP1 combine with results from 11 other records from around the world to suggest an event centered at about 4.07 ka BP with bracketing ages of 4.15 to 3.93 ka BP. The isotopic and petrographic results suggest a two-pulsed wet event in northeastern Namibia, which is in the Southern Hemisphere's summer rainfall zone where more rain presumably fell with southward migration of the Inter-Tropical Convergence Zone as the result of cooling in the Northern Hemisphere. Comparison with other records from outside the region of dryness from the Mediterranean to eastern Asia suggests that multiple climatic zones similarly moved southward during the event, in some cases bringing wetter conditions that contradict the notion of global drought.