Dr Rion Lerm’s PhD in Ecology marks the culmination of countless hours in the field and a steadfast commitment to understanding the natural world.
Based at the South African Environmental Observation Network (SAEON) Ndlovu Node in Limpopo, Rion’s journey with birds and biodiversity began long before he entered the academic world.
Growing up with frequent visits to the Kruger National Park (KNP), he found himself captivated not by the Big Five, but by the rich birdlife that graces South Africa’s iconic savanna landscapes. Since the 1990s, he has spent hours identifying bird species using field guides while others focused on large game. This early exposure, combined with the influence of his father and his tertiary education in ecology, zoology and botany, laid the foundation for his passion for animal community and functional ecology.
Rion’s PhD research, titled: “Bird Distribution Dynamics of the Kruger National Park and Surrounds: Drivers and Diversity”, addresses a significant knowledge gap in African protected area research.
Before his study, little was known about how bird communities inside KNP compared to those outside in terms of diversity and ecological function. His research also examined the impacts of extreme weather events such as drought as well as seasonal and environmental variables like tree cover, water availability and ambient temperatures.
To conduct this research Rion combined advanced technology with grassroots data. He made use of remotely sensed satellite products and drew heavily on citizen science data – specifically from the African Bird Atlas Project. Through this, he was able to construct a dynamic and comprehensive understanding of how bird communities changed across time and space.
His findings offer valuable insights for conservation scientists and protected area managers striving to safeguard biodiversity in a changing climate.
Rion’s decision to pursue his PhD through UKZN was influenced by a combination of opportunity and support. He credits Dr Anthony Swemmer, his line manager at SAEON, for proposing the journey, and thanked his supervisors, Professor Colleen Downs, Dr Dave Ehlers Smith and Professor Dave Thompson, who took him on based on his previous bird-related research experience. Financial assistance from UKZN, along with support from the National Research Foundation (NRF) and NRF-SAEON, made the endeavour possible.
Following the completion of his doctorate, Rion plans to continue his work in community and functional ecology. He aims to broaden his research to include other taxa such as invertebrates and to integrate emerging technologies like bioacoustics, artificial intelligence and deep learning.
These future pursuits are intended to complement his ongoing responsibilities at SAEON, which include managing long-term environmental research infrastructure, supporting students and researchers and engaging with the public on scientific matters.
Despite receiving individual recognition, Rion consistently emphasised the collaborative nature of his work, saying that his PhD was the result of a team effort. He attributed his success to a higher power, saying: ‘If there was one person responsible, it was God.’
Outside his professional life, Rion volunteers with various associations and enjoys spending time with his family. His nature-based hobbies include photography, aquascaping and falconry, and he occasionally unwinds with computer gaming.
Rion lives with his wife and three children in Kampersrus, a small village nestled against the Drakensberg mountains near Hoedspruit in Limpopo Province. Surrounded by nature, it is a fitting home for someone whose life and work are so closely tied to understanding and preserving the natural world.
To students and aspiring ecologists, he offered a simple yet powerful message: ‘Make use of the opportunities that come your way’ – words that reflect the journey of someone who did just that, and soared.
Words: Sally Frost
Photograph: Sethu Dlamini
