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Biology subjects

Pirk, C. W. W.

Publications and source records attributed to Pirk, C. W. W..

2 recordsLinked to original sources

A citizen science photo guide of plants and bee visitors in the Eastern Afromontane Biodiversity Hotspot of Kenya

The influence of global change on species assemblage patterns is on the rise with evidence showing a steady decline in pollinator communities across the globe. As such, the implementation of rigorous monitoring efforts aimed at documenting the actual status of pollinators is of essence especially in the tropics. This can be possible through participatory studies with volunteers (citizen scientists) that emphasizes on apriori research hypotheses with the aim to draw inferences on the potential drivers of species community assemblage patterns. In ecology, photos have the ability to drive change and can provide unbiased evidence on species existence with a potential to compare changes over time and space. However, in the tropics and particularly in sub-Saharan Africa, such ideas fall short of public participation. In this study, we aimed to assess and digitally document plants and their bee visitors as important data sources with immense potential to improve on the knowledge and awareness of the different plants and bee species in two counties of Kenya (Taita and Muranga). Our results showed marked differences in bee community assemblage patterns between the two counties, with a huge number of unique species between them. We successfully digitalised and present photos of 114 bee and 262 plant species. Using these digitalised photographs, we herein elaborate on the community assemblage patterns of plants and their bee pollinators in the Eastern Afromontane Biodiversity Hotspot (EABH) of Kenya and further discuss the importance of exploiting images for research in biodiversity and conservation. We therefore conclude that, technological advances that helps in digitalising species through photography can be important in the successful implementation of community based environmental threat management agendas.

ecology↗

Managed honey bee colony losses and causes during the active beekeeping season 2022/2023 in nine Sub-Saharan African countries

This study reports for the first-time managed honey bee colony loss rates and associated risk factors during the active beekeeping season 2022/2023 in nine Sub-Saharan African countries, namely Kenya, Ethiopia, Rwanda, Uganda, Benin, Liberia, Nigeria, Cameroon and Democratic Republic of the Congo. The sustainability of bee swarm catches as a main honey bee colony source tool for operation expansion by African beekeepers was also evaluated in Kenya and Ethiopia. In this survey, the 1,786 interviewed beekeepers across these countries collectively managing 41,761 colonies registered an overall loss rate of 21.3%, which varied significantly among countries (from 9.7 to 45.3%) and hive types (from 10.6% in hives with movable frames to 17.9% in frameless hives). The perceived causes of losses in order of significance were issues beyond the beekeepers control (mainly theft, drought, and bushfire), absconding and pests (mainly wax moth, small and large hive beetles, ants and Varroa destructor mite), but this pattern varied greatly across countries. Among the management practices and characteristics, migratory operations and professional beekeepers experienced lower losses than stationary operations and semi-professionals and hobby beekeepers. Insights into the number of bee swarms caught revealed significant decreases in swarm availability over the past three years in Kenya. The opposite situation was observed in some regions of Ethiopia. These trends require further investigation. Overall, this comprehensive survey sheds light on the complexities and challenges beekeepers faced in Sub-Saharan Africa, pointing to the need for targeted interventions and sustained research to support the resilience and growth of the apicultural sector.

zoology↗