Assessing human–wildlife interactions adjacent to protected areas in northern Tanzania

1. Between 1985 and 1991, bush encroachment was serious in Lake Manyara National Park, northern Tanzania. Shrub cover increased by c. 20%. The increase was independent of initial (1985) shrub cover. 2. Since 1987 there has been a steep decline in the number of African elephant in the Park due to poaching. Elephant density decreased from about 6 km-2 to about 1 km-2. However, shrub establishment, as determined from counting tree-rings, preceded poaching. 3. Shrub establishment in two areas of the Park coincided with anthrax epidemics that drastically reduced the impala population. In the northern section of the Park this was in 1984, in the southern section in 1977. 4. The diameter increment of Acacia tortilis was 5-24 mm year-1, irrespective of the size of the trees. Size measurements indicated an even-aged stand of Acacia established in 1961, which coincided with another anthrax outbreak among impala. 5. Size measurements of old Acacia tortilis trees indicated another even-aged stand established at the end of the 1880s. The size of trees of this stand was not significantly different from a stand in Tarangire National Park, nor from a stand near Ndutu (on the boundary between Serengeti National Park and Ngorongoro Conservation Area), also northern Tanzania. All three stands are likely to have originated from bush establishment caused by the rinderpest pandemic at the end of the 1880s. 6. It is suggested that seedling establishment of Acacia is a rare event under the prevailing conditions of high browsing pressures by ungulates such as impala. Punctuated disturbances by epidemics among these ungulates create narrow windows for seedling establishment, which may explain the occurrence of even-aged stands.

The Ngorongoro Conservation Area (NCA) is a protected area and UNESCO World Heritage Site and part of the Serengeti‐Ngorongoro Biosphere reserve in northern Tanzania. It is famous for its large volcanic caldera, unique cultural heritage, early hominid fossils and significant wildlife populations. NCA has been managed as a multiple land‐use area since 1959, a designation intended to foster a harmonious coexistence between indigenous residents and wildlife (Goldstein, 2004).

Understanding attitudes of local leaders towards conservation issues in village areas surrounding protected areas is vital for the success of sustainable biodiversity conservation. This is because of the need of designing effective conservation programs outside protected areas and to reduce resource-based conflicts involving local communities and protected areas. Twenty villages in Karatu district located between Ngorongoro Conservation Area (NCA) and Lake Manyara National Park (LMNP) were chosen for this study. The data were collected using semi-structured questionnaires administered to 133 local leaders in 20 villages. Findings indicated that attitudes of local leaders towards conservation in the village areas were positive. We observed that 90.3% of the village government members and 50% of the chairpersons considered charcoal making as detrimental to the environment and insignificant to the development of their villages. Majority of the respondents (80.0%) rated that village environmental conservation bylaws are having inadequate penalties for offenders in dealing with the current state of rapid environmental deterioration in village lands. The position of a leader was an important predictor as 87.4% of village chairpersons and 70.0% of the village government members were positive towards conservation in village lands. The implication of the results could be linked to conservation initiatives outside protected areas and understanding the attitudes and securing the support of local leaders. Key words: Environmental conservation, Ngorongoro Conservation Area, wildlife conservation, local communities, protected areas.

Communities in Africa bordering national parks or protected areas commonly overlap with wildlife. However, it is unclear to what degree such overlaps result in interactions with wildlife. The Ngorongoro Conservation Area (NCA) was designated a multiple land-use conservation area in 1959. Maasai and Datoga pastoralists and Hadzabe hunter-gatherers reside with protected wildlife in NCA. The study was carried out in four Maasai villages within the NCA, including Kayapus, Endulen, Meshili, and Nainokanoka. A cross-sectional study was used to assess drivers of human‒wildlife interactions using questionnaire surveys, focus group discussions, and field visits. A total of 396 households participated in the survey. The collected data were analysed using qualitative data analysis techniques and descriptive statistics such as frequencies and means. The habitat, which comprises water, pasture, shelter, and space, accounted for 100% of interactions, indicating that it is the primary driver of human‒wildlife conflict. Other driving factors for human‒wildlife interactions are the increase in wildlife, collections of firewood, domestic animals kept, and influence of community sleeping arrangements, searching for traditional medicines, and killing of lions for ritual purposes or defense. Large household sizes (36 family members) coupled with climate change have also driven and fuelled human‒wildlife interactions. Challenges identified as threatening human‒wildlife co-existence are injuries, deaths, disease transmission, and destruction of property. To mitigate human‒wildlife conflicts, the following are recommended: the increase in boarding schools coupled with the increase in enrolment of students in boarding schools or providing reliable transport, distribution of tap water, increasing food assistance to the community living in poverty, controlling population increase through reallocation the population in other areas, introducing zero-grazing, using biogas, discouraging community sleeping arrangements, i.e., humans with calves in the same house, improving record-keeping of the wildlife attacks, provisional dissemination of research findings to the community.

Flies and Yaws: Molecular Studies Provide New Insight

This study assessed tourist satisfaction and its links with tourist attractions and infrastructure at the following six protected areas on the Northern Tourist Circuit of Tanzania: Tarangire National Park, Lake Manyara National Park, Ngorongoro Conservation Area, Serengeti National Park, Arusha National Park, and Mt. Kilimanjaro National Park. Semi-structured interviews were conducted with 185 tourists visiting the protected areas. Satisfaction ratings for the Northern Circuit were high, with 86% of tourists willing to be repeat visitors. Tourists were attracted primarily to wildlife viewing. Although most tourists were not influenced to visit the region by indigenous culture or physical features, 81% of tourists noted that non-wildlife attractions enhanced their tourist experience. A range of ways to develop more sustainable forms of tourism emerged from the work, including lengthening stays, guide/driver capacity building, and partnership working with tour operators to improve marketing, increase satisfaction rates, and diversify the product.

Wildlife population trends as indicators of protected area effectiveness in northern Tanzania

Citizen or community science has the potential to inform wildlife management by including the general public in research and generating datasets on human perceptions of wildlife population dynamics and human–wildlife interactions. These contributions are especially valuable in areas with limited formal capacity for wildlife monitoring. However, people's perceptions are not always reliable and hinge on the accurate classification of species. In the absence of artificial intelligence‐supported automatic identification tools or wildlife experts, effectively incorporating people's reports of wildlife sightings into conservation management plans depends on the abilities of people to accurately identify animals (i.e. species literacy). These skills likely vary across human populations in accordance with a range of demographic, geographic and species‐specific factors. We carried out 680 semi‐structured interviews with rural citizens, randomly selected along transects in 25 villages across northern Tanzania. We showed photographs of 17 mammal species to participants and assessed species identification ability. Using a generalized linear mixed model within a Bayesian framework that accommodated the hierarchical data structure and non‐independence of the data, we tested specific hypotheses regarding the correlations of species identification accuracy with human demographic (ethnicity, education, age, wealth, gender), geographic (Human Footprint Index [HFI], distance to protected areas, district) and species‐specific (conservation status, activity patterns, body mass, diet) variables. Most respondents accurately identified key wildlife species commonly involved in human–wildlife interactions. Gender strongly influenced species identification accuracy, with men three times more likely to correctly identify species as compared to women. Formal education was negatively correlated with species identification accuracy. Respondents identified large species more accurately than smaller ones, whereas other species traits were not markedly correlated with identification accuracy. Distance to the nearest protected area, district and the HFI score in the area surrounding the household of the respondent were not markedly associated with species identification accuracy. Our results show that rural residents in northern Tanzania can reliably identify key wildlife species implicated in consequential human–wildlife interactions, though identification accuracy was affected by a combination of demographic and species‐specific factors that must be appropriately contextualized. This finding validates studies of local perceptions of wildlife populations and community reports of human–wildlife interactions. Finally, we discuss how local perspectives on wildlife can be applied to improve human–wildlife coexistence. Read the free Plain Language Summary for this article on the Journal blog.

Commensal and field rodents and wild small carnivores were live-trapped in five villages of Karatu district and one settlement in the Ngorongoro Conservation Area in Ngorongoro district in Tanzania. Blood samples were taken and serologically tested for plague, using the Blocking ELISA technique. Some domestic dogs and cats in the Karatu villages were aseptically bled and similarly tested for plague. Fleas were collected from the examined animals and from randomly selected residential houses. A total of 241 rodents, 1 Crocidura spp, 43 dogs, 12 cats and 4 slender mongooses were involved in the survey. Of the rodents, 14.5% were infested with fleas, which comprised of Xenopsylla brasiliensis (45.8%) and Dinopsyllus lypusus (54.2%), with an overall population density of 0.2 fleas/animal. Thirty one (72.1%) of the dogs were infested with fleas, all of which were Ctenocephalides spp. Thirty five (63.3%) houses were infested with fleas whose population was composed of Ctenocephalides spp, Pulex irritans, Tunga penetrans and Echinophaga gallinacea. Infected rodents were found in all the villages while the infected dog was found at Rhotia-Kati. Nineteen (11%) of the rodents and one (2%) dog harboured specific plague antibodies. It was broadly concluded that sylvatic plague was endemic in Karatu district and Ngorongoro Conservation Area and that outbreaks of the disease can occur in the area any time if and when relevant conditions become favourable. Prompt application of appropriate preventive and control measures and survey for substantiating the status in the Lake Manyara National Park, which is adjacent to some of the infected villages, are recommended.

In many regions of sub Saharan Africa large mammals occur in human-dominated areas, yet their community composition and abundance have rarely been described in areas occupied by traditional hunter-gatherers and pastoralists. Surveys of mammal populations in such areas provide important measures of biodiversity and provide ecological context for understanding hunting practices. Using a sampling grid centered on a Hadza hunter-gatherer camp and covering 36 km2 of semi-arid savannah in northern Tanzania, we assessed mammals using camera traps (n = 19 stations) for c. 5 months (2,182 trap nights). In the study area (Tli’ika in the Hadza language), we recorded 36 wild mammal species. Rarefaction curves suggest that sampling effort was sufficient to capture mammal species richness, yet some species known to occur at low densities in the wider area (e.g. African lions, wildebeest) were not detected. Relative abundance indices of wildlife species varied by c. three orders of magnitude, from a mean of 0.04 (African wild dog) to 20.34 capture events per 100 trap-nights (Kirk’s dik dik). To contextualize the relative abundance of wildlife in the study area, we compared our study’s data to comparable camera trap data collected in a fully protected area of northern Tanzania with similar rainfall (Lake Manyara National Park). Raw data and negative binomial regression analyses show that wild herbivores and wild carnivores were generally detected in the national park at higher rates than in the Hadza-occupied region. Livestock were notably absent from the national park, but were detected at high levels in Tli’ika, and cattle was the second most frequently detected species in the Hadza-used area. We discuss how these data inform current conservation efforts, studies of Hadza hunting, and models of hunter-gatherer foraging ecology and diet.

Isolation of Treponema DNA from Necrophagous Flies in a Natural Ecosystem

This article investigates the early history of the Ngorongoro Conservation Area (NCA), Tanzania, during the late 1950s and early 1960s, a period which has been overlooked in almost all the literature on the NCA. The article develops a governance perspective to argue that the NCA was heavily influenced by international thinking about wildlife conservation and Maasai pastoralism, and thus what was intended to be a multiple land use area was instead managed primarily as a national park. Several key episodes in this early history are dealt with in detail – the creation of the NCA; its early management difficulties; the role of Henry Fosbrooke, the NCA’s first Conservator; the impact of the international 1961 Arusha Conference on wildlife conservation; and the Canadian-funded management planning process of the mid-1960s. This leads to an exploration of some of the links between this period and contemporary practices in the NCA, and how practices of governance established over forty years ago still play a significant role in the present day. The case of the NCA illustrates the importance of appreciating the complexity of protected area governance and histories.

Human–wildlife interactions affect people's livelihoods, attitudes and tolerance towards wildlife and wildlife reserves. To investigate the effect of such interactions on people's attitudes and livelihoods, we surveyed 2,233 households located around four wildlife reserves in Rajasthan, India. We modelled respondents’ attitudes towards wildlife and wildlife reserves, experience of crop damage and livestock predation, and likelihood of mitigation use. Crop damage was reported by 76% of surveyed households, and livestock predation was reported by 15%. Seventy-one percent of households used at least one of eight mitigation measures against crop damage, and 19% used at least one of seven mitigation measures against livestock predation. We found that male respondents and households with a higher level of education valued wildlife and wildlife reserves more. Households at higher elevations and growing a greater variety of crops were more prone to crop damage. Proximity to reserves, elevation and larger livestock herds were associated with a higher incidence of livestock predation. Households in which a member had > 12 years of schooling and households with a history (6–10 years) of interaction with wildlife (i.e. crop damage) were most likely to use mitigation against crop damage. Households that owned more livestock and had a history of interaction (1–5 years and > 10 years) were most likely to mitigate against predation. Our comparative study provides insights into factors that influence interaction and tolerance, which could be used to improve existing management and prevention efforts in Rajasthan.

Temporal gland secretion in African elephants (Loxodonta africana)

The Ngorongoro Conservation Area (NCA) is a World’s Heritage site and Biosphere Reserve in Tanzania. It is the only protected area with multiple land use where both wildlife conservation and limited human activities are allowed. Despite such an important status, the area is experiencing ecosystem changes resulting from increasing human population, diversified livelihoods and tourism activities. This study was conducted to determine the trends and challenges of livelihood activities of the local Maasai and tourism in NCA and their implications on the ecology of the area. Household questionnaire interviews, key informant interviews, focus group discussions, direct field observations and secondary data reviews were applied. A total of 145 people from Enduleni, Oloirobi villages and the NCA Authority (NCAA) were involved in the study. To complement the socio-economic data, landsat MSS satellite images of 1990, 2000 and 2013 blocks were analysed to assess land use/cover changes occurring in the study area. Results indicate rapid human population growth rate of 5.6% and an increment of 1.1% of livestock population per annum. It is also noted that about 46% of cropland has increased in the studied villages. Furthermore, the Maasai who were historically pastoralists are changing to agro-pastoralists. The grasslands and other natural forests showed a decreasing trend. The decreasing trends in wildlife are being associated with the changing vegetation characteristics among other factors. Despite the ecological changes, the Maasai have remained uncomfortable with the restrictions over land use so far implemented by the NCAA. In addition, there has been an increasing number of tourists and facility development within the NCA. There were also differing views between the Maasai and NCAA, which might put the NCA ecosystem under serious threats questioning its future. Whether or not the NCA will remain a world heritage site depends on management measures taken, otherwise the disappearance of the NCA ecosystem is imminent.   Key words: NCA, NCAA, world heritage site, tourism, ecosystem change, human population, diversified livelihoods.