Ecosystem engineering in the Quaternary of the West Coast of South Africa.

Despite advances in our understanding of the geographic and temporal scope of the Paleolithic record, we know remarkably little about the evolutionary and ecological consequences of changes in human behavior. Recent inquiries suggest that human evolution reflects a long history of interconnections between the behavior of humans and their surrounding ecosystems (e.g., niche construction). Developing expectations to identify such phenomena is remarkably difficult because it requires understanding the multi-generational impacts of changes in behavior. These long-term dynamics require insights into the emergent phenomena that alter selective pressures over longer time periods which are not possible to observe, and are also not intuitive based on observations derived from ethnographic time scales. Generative models show promise for probing these potentially unexpected consequences of human-environment interaction. Changes in the uses of landscapes may have long term implications for the environments that hominins occupied. We explore other potential proxies of behavior and examine how modeling may provide expectations for a variety of phenomena.

The South African Pollen Monitoring Network: Insights from 2 years of national aerospora sampling (2019-2021).

BACKGROUND: Pollen monitoring has been discontinuously undertaken in South Africa, a country with high biodiversity, a seasonal rainfall gradient, and nine biomes from arid to subtropical. The South African Pollen Monitoring Network was set up in 2019 to conduct the first long-term national aerospora monitoring across multiple biomes, providing weekly reports to allergy sufferers and healthcare providers. METHODS: Daily airborne pollen concentrations were measured from August 2019 to August 2021 in seven cities across South Africa. Updated pollen calendars were created for the major pollen types (>3%), the average Annual Pollen Index over 12 months was calculated, and the results were compared to available historical data. RESULTS: The main pollen types were from exotic vegetation. The most abundant taxa were Poaceae, Cupressaceae, Moraceae and Buddleja. The pollen season start, peak and end varied widely according to the biome and suite of pollen taxa. The main tree season started in the last week of August, peaked in September and ended in early December. Grass seasons followed rainfall patterns: September-January and January-April for summer and winter rainfall areas, respectively. Major urban centres, for example, Johannesburg and Pretoria in the same biome with similar rainfall, showed substantive differences in pollen taxa and abundance. Some major differences in pollen spectra were detected compared with historical data. However, we are cognisant that we are describing only 2 years of data that may be skewed by short-term weather patterns. CONCLUSIONS: Differences in pollen spectra and concentrations were noted across biomes and between geographically close urban centres. Comparison with historical data suggests pollen spectra and seasons may be changing due to anthropogenic climate change and landscaping. These data stress the importance of regional and continuous pollen monitoring for informed care of pollinosis.

Scope of practice of occupational therapists working in Victorian community health settings.

BACKGROUND/AIM: Current health policy places emphasis on community-based health care and it is expected that there will be an increase in the number of people receiving care in community settings. This study aimed to examine the profile and scope of practice of occupational therapists working in Victorian community health settings and the amount and type of health promotion activity incorporated into their role. METHOD: An anonymous postal questionnaire was sent to 205 community-based Victorian occupational therapists. One hundred and one (49.3% response rate) questionnaires were returned, with 72 respondents (35.1%) meeting study inclusion criteria. A descriptive research design was used to address study aims. RESULTS: Results indicate that the majority of community health occupational therapists are experienced practitioners, have a varied scope of practice and report a high level of job satisfaction. Compared with previous studies, there is an increase in new graduate occupational therapists starting their career in community health settings, a greater number of part-time workers and a diversification of clinical and non-clinical roles. Barriers to practice that exist include high demand for service, limited funding and time spent on administrative tasks. Although health promotion was regarded as an important role of community health workers, a large number of therapists were not involved in this activity because of limited knowledge and clinical work taking priority. CONCLUSION: Study findings have implications for occupational therapy training, and there is a clear need for input at policy level to address the significant resource allocation issues raised.