Featuring research teams currently on the Gough Island takeover expedition.
The Tristan da Cunha Conservation Department recruited two Tristan Islanders to assist in the field at Tristan for the duration of the takeover. Image of the two members of a previous team.
During the annual Gough Island takeover (relief) expedition, the S.A. Agulhas II delivers passengers and cargo to Tristan da Cunha Island, which is 350 kilometers from Gough Island. Additionally, several researchers are given the chance to carry out their research at Tristan da Cunha during the relief period for Gough Island.
Prof Marthán Bester, semi-retired, Emeritus Professor and senior Research Fellow of the Mammal Research Institute at the University of Pretoria, is currently on the Tristan da Cunha to conduct field research on Subantarctic fur seals.
Find our more below about this project and prospects for the takeover period.
TEAM
Tristan Mammal Research
Project Name
Subantarctic Fur Seals at the Tristan da Cunha Islands, South Atlantic Ocean
Principal Investigator
Prof Marthán Bester
University of Pretoria
Co-Principal Investigator
Prof Nico de Bruyn
University of Pretoria
Co-Principal Investigator
Dr Mia Wege
University of Pretoria
Co-Principal Investigator
Mr. Trevor Glass
Tristan Conservation Department Head
The history of fur seal research on Tristan da Cunha
Fur seal research at the Tristan da Cunha (TdC) Islands started during the 1970s (1974–1978). In its present form, the research continues through a next phase (2009–2019), and beyond.
Short description of the project
Using Subantarctic fur seals as bioindicators of environmental conditions and as tools for suitable management of natural resources, contributing to observing marine ecosystems in the TdC Islands, since 2019 and beyond, the aim is to: (a) determine the seasonal attendance patterns of primarily lactating adult females, from the smallest (incipient) population of the species in the world at Cave Point Peninsula, TdC, (b) measure and contrast the growth rate and/or weaning mass of pups at the Cave Point breeding colony (10 month nursing period), (c) collect scat (non-invasive) and whiskers (invasive) samples for diet analyses.
During this ‘takeover’ the team aims to service and/or retrieve the Attendance Pattern Automated System (satellite-linked) at Cave Point, collect and process fur seal scat samples to determine diet, and weigh pup/under-yearling fur seals (at around 290 days of age) to compare their weaning weights amongst years and with those of pups from other island populations (including Gough Island).
In everyday language
The fur seals breed and rest on the islands, and they feed at sea. The research team aims to determine (1) what the seals feed on when they are away during feeding trips, (2) how well the pups, which remain on land, grow on a diet of milk which they suck from their mothers when these return to land after each feeding trip, and (3) how far away from the island, and for how long, do the mothers of the fur seal pups have to remain at sea on each feeding trip to be able to sustain their pups until weaning.
For more information visit about Subantarctic fur seals, click on the link below.
This project is funded by: The National Research Foundation (NRF-SANAP), The Royal Society for the Protection of Birds (RSPB) and Tristan da Cunha Conservation Department (TdC Conservation Department).
Update posted by the Tristan Conservation Department (on Facebook, 09 October 2023):
“The weather has been very nice last week. The conservation team and professor Martian Bester managed to go to the caves to do seal work with the seal pups. It was a great success as they managed to weigh fifty pups. Martian has been working with the conservation department for fourty nine years but sadly this is his last year working with the conservation team as he is retiring”
A few hundred million years after the big bang, the first stars in the universe were born during a period known as cosmic dawn.
This epoch is uncharted territory: the first and only tentative detection of cosmic dawn was reported in 2018, thus opening a new window into the universe’s past that is ripe for new discoveries.
Telescopes aiming to study cosmic dawn must observe at radio frequencies (<150 MHz). These frequencies are exceptionally difficult to measure because of contamination from terrestrial radio-frequency interference and ionospheric effects.
Our team has demonstrated that Marion Island truly offers a South African geographic advantage for low-frequency radio astronomy. The radio-quiet environment of Marion is unparalleled, surpassing even the Karoo desert, which is one of the premier radio observatory sites and the future location of the Square Kilometre Array (SKA).
With its clean observing conditions, Marion Island gives a unique opportunity to deliver high impact science that is impossible to conduct anywhere else in the world.
Radio astronomy experiment (ALBATROS) on Marion Island.
The project has installed two radio astronomy experiments on Marion Island. The first, named PRIZM, is searching for the signal from cosmic dawn and has been operating for three years. We are continuing these observations, coupled with instrument upgrades and rigorous calibration campaigns in order to obtain a robust detection. The second experiment, ALBATROS (above), is a companion project that aims to image the radio sky at <30 MHz, improving upon the resolution of current results by a factor of 20-30.
We have proven the technology with a few pathfinder antennas, and we are building and installing additional antennas to complete the full ALBATROS array. Our work is well timed to take advantage of the current solar minimum. The reduced ionospheric activity may allow us to probe the sky at particularly low observational frequencies that are otherwise difficult or impossible to access.
Prof Kavilan Moodley is the Principal Investigator on the project hosted at The Astrophysics Research Centre (ARC) at the University of KwaZulu-Natal (UKZN). The Astrophysics Research Centre (ARC) is part of the College of Agriculture, Engineering and Science at UKZN. We strive to be a world-class centre of excellence for research and postgraduate training in astrophysics and related data-intensive science. The management of the project is done by Prof. H. Cynthia Chiang and Prof. Jonathan Sievers.
Read a recent Q&A session with Professor Cynthia Chiang, experimental physicist, in the Quanta Magazine. See link below.
On the 1st of August, Errol Julies joined the South African Polar Research Infrastructure (SAPRI) as a Senior Electronics Technician, bringing with him a wealth of experience and a diverse skill set. His responsibilities at SAPRI encompass the maintenance of offshore marine infrastructure, asset management and supply chain management processes, providing technical support to researchers and students, ensuring compliance with the Occupational Health and Safety Act, and upgrading communication systems at the South African National Antarctic Programme (SANAP) research stations (bases), particularly the High Frequency (HF) systems at Marion Island between the base and field huts. Errol’s previous background and experiences make him an ideal fit for his role at SAPRI, where he continues to make significant contributions.
Meet Errol Julies: A Remarkable Journey of dedication and expertise
Errol Julies, hailing from the small town of De Doorns and having attended secondary school in Worcester, has embarked on an extraordinary path that has led him to become a highly accomplished professional in the scientific and research field.
Errol’s initial foray into the world of work began as an assistant train driver, but it was his introduction to the scientific realm at the Hermanus Magnetic Observatory (HMO), now known as the South African National Space Agency (SANSA), that truly ignited his passion. Starting as a general cleaner at HMO, Errol simultaneously pursued part-time studies and eventually obtained a BTech degree in Electrical Engineering.
For an impressive 17 years, Errol served as a Geomagnetic Observatory Technician at SANSA. In this role, he excelled in installing, maintaining, and monitoring geomagnetic and Magnetotelluric stations across Southern Africa. These stations adhered to the esteemed INTERMAGNET standards, a testament to Errol’s dedication in ensuring their construction and upkeep at the highest level. Additionally, Errol played a pivotal role in training aspiring geomagnetic observers from around the world during the biannual geomagnetic workshops hosted in different countries.
In 2015, Errol joined the Department of Forestry, Fisheries and the Environment (DFFE) as an Engineering Technician, specialising in telecommunications and instrumentation. His responsibilities encompassed managing the Very Small Aperture Terminal (VSAT) communications system from Cape Town to the SANAP bases, conducting calibration and testing of electronic equipment and instruments, and overseeing the maintenance and upgrade of electronic and HF equipment at all SANAP bases in accordance with specifications. Furthermore, Errol took on the role of Departmental Coordinating Officer (DCO), leading numerous voyages to the SANAP bases and successfully coordinating a voyage to Gough Island all by himself.
Driven by a thirst for knowledge and personal growth, Errol completed his BTech degree in Project Management in 2018, despite the challenges encountered during his voyage to Gough Island. In 2019 and 2020, he further demonstrated his resilience and expertise by overwintering on Gough Island as a Communication Engineer and team leader on the 65th Gough Island overwintering team. Currently, Errol is pursuing a Post Graduate Certificate in Education (PGCE), focusing on Mathematics and Mathematics Literacy for the Senior Phase and Technical Vocational Education and Training (TVET) colleges. This endeavor aims to support learners and students in his community through evening classes.
Errol Julies’ journey is a testament to his unwavering dedication, expertise, and commitment to excellence. His remarkable achievements and vast knowledge in the scientific and research field make him an invaluable asset to any organisation fortunate enough to have him on board.
Welcome to the SAPRI team, Errol!
Images supplied by Errol Julies.
Anche Louw, South African Polar Research Infrastructure, 13 September 2023
The South African Environmental Observation Network (SAEON) is a business unit of the National Research Foundation (NRF).
NRF SAEON celebrated its 21st anniversary on 7 September 2023. See the event programme below.
It is inspiring to see what SAEON has achieved over 21 years. “SAEON encompasses seven Research Nodes throughout South Africa and a National Office that is located in the country’s political capital of Pretoria” (Read more about the nodes here).
SAEON manages three research infrastructures developed by the Department of Science and Innovation (DSI) as part of the South African Research Infrastructure Roadmap (SARIR). The South African Polar Research Infrastructure (SAPRI) is one of the three research infrastructures, and was established in 2021 (see the SAPRI timeline here). The SAPRI hub is located in the SAEON Egagasini Node offices in Cape Town.
The SAEON Egagasini Node and SAPRI team at the NRF SAEON 21st Anniversary. Video: click on the image.
Message @dsigovza Dr. Gilbert Siko the crucial role of #NRFSAEON21st data marine & terrestrial for decision support contributing to national priorities & international commitments. Commitment to capacity building through opportunities from SAEON Platforms pic.twitter.com/810UYW9RUv
The South African Polar Research Infrastructure (SAPRI) with the Antarctic Legacy of South Africa (ALSA) and the South African Environmental Observation Network (SAEON) Egagasini Node visited Generation Schools Imhoff, in Kommetjie on 20 July 2023.
Generations Primary is based on the Montessori ethos of independent children working and the Cambridge model of education. The school structure consists of various phases with mixed-age groupings “which allows children to work together, to learn from and teach each other.” The mixed-age group 9 – 12 years has recently completed projects and tasks related to the Antarctic environment, creating a space where learners can develop, in a creative way, a sense of the 7th continent. The invite to visit the school to further connect the application of academics in the real world was welcomed.
The 110 learners with teachers, were presented with a rhythmic exercise with boom-whackers (musical plastic tubes) as an ice-breaker activity, which was followed by a “Journey through the Southern Ocean, via Marion Island, to Antarctica”, which was presented by Ria Olivier (ALSA), Sikelelwa Mtyenene (SAEON Egagasini Node), Abuyiselwe Nguna (SAPRI) and Riesna R. Audh (SAPRI). Various interactive exhibits were set up in the school hall, which further gave learners the opportunity to interact with the ALSA, SAPRI and SAEON teams.
“Journey through the Southern Ocean, via Marion Island, to Antarctica”
Follow the journey below.
Start at Cape Town Harbour - Ria Olivier
History: Archivist with 10 years' involvement in SANAP and Principal Investigator of the Antarctic Legacy of South Africa project, talks about South Africa's involvement in the Antarctic regions.
Sail past the coast of South Africa - Sikelelwa Mtyenene
Coastal voyage: research conducted in the coast off South Africa, where the Atlantic and Indian oceans meet.
Stop at Marion Island - Abuyiselwe Nguna
Science weather, fauna and flora. The speaker shares his experience as a field assistant, part of a Marion Island overwintering team member.
Cross the Southern Ocean - Riesna Audh
Oceanographic sampling on board the South African research and supply vessel, the S.A. Agulhas II.
Pass seaice and icebergs - Riesna Audh
The speaker has been on board the S.A. Agulhas II during various Antarctic expeditions (counting to over 300 days in total), for her research on sea ice in the Antarctic marginal ice zone. She shares her experiences.
Arrive at Antarctica - Abuyiselwe Nguna
What you can expect. Antarctic operations. Clothing (protective gear) and more info about the South African National Antarctic Expedition station (SANAE IV).
Interactive exhibits
This collaborative science engagement event was focused on communicating marine and Antarctic research in such a way to foster curiosity for these regions. The school also received a set of books sponsored by the Antarctic Legacy of South Africa (see image below).