by Ria Olivier | Sep 2, 2021 | Legacy, Marion Island, Uncategorised
Marion 78, our Overwintering team members at Marion Island celebrate Spring 2021. (Above(l-r: Alicia Siyasanga, Tlhonolofatso)
Our Meteorologist team of the South African Weather Services, Alicia Phakula (Meteorologist Technician), Siyasanga Mpehle (senior Meteorologist) and Tlhonolofatso Tebele (Meteorologist Technician) made some time to take these pictures on Spring day in the snow and share their experience with us.
Danielle Conri, field assistant on killer whales of the Marion Island Marine Mammal Program of Pretoria University celebrates spring day while crossing though Marion Island to sensus seals (photo credit Wild Ocean Wanderers)
Always good to make a snow angel.
Follow Wild Ocean Wanderers on Facebook to keep up to date with the Marion 78 team
by Ria Olivier | Aug 27, 2021 | Environment, Marine Protected Area, Marion Island, Mice Eradication, Research, SANAP, Science
Ecosystem processes are changing worldwide, especially with the impacts of invasive species being exacerbated by climate change. This is particularly obvious in the Southern Ocean where a warmer and dryer environment allows the proliferation of species once limited by the cold climate. South African Special Nature Reserve, Marion Island is no exception. A recent proliferation of invasive House Mouse attacks on endangered breeding seabirds suggests a profound alteration of the natural ecosystem. This has led to the planned eradication of mice at Marion Island in winter 2023.
For the next three years, the new SANAP project co-led by Dr Maëlle Connan (Research Fellow in the Marine Apex Predator Research Unit, Nelson Mandela University) and Prof. Peter Ryan (director of the FitzPatrick Institute of African Ornithology – University of Cape Town) will focus on three data deficient species of avian scavengers: Black-faced Sheathbill, Kelp Gull and Brown Skua.
By focusing on these three species and some of their prey, the project intends first to fill identified scientific gaps that are crucial for best planning of the mouse eradication. Second, these three scavengers will be used as indicators of recovery of the terrestrial ecosystem post-eradication by establishing baselines for the scavenger guild and their prey against which the impact of a successful mouse eradication can be measured in years to come. (Above: Left – Maelle Connan, Right – Peter Ryan)
(Above l-r: Sub-Antarctic Skua, Black-Faced Sheathbill)
(Above: Eleanor Weideman on Marion Island)
An important aspect of the project will entail conducting regular censuses and seasonal round island counts in addition to behavioural observations of the focal scavenger species. Indeed, the three species to be studied are at the top of the terrestrial food chain, and thus can be used as indicators of recovery of the island biota post-eradication.
On one hand, Black-faced Sheathbills and Kelp Gulls used to predate on terrestrial invertebrates, at least seasonally, but this behaviour has decreased in sheathbills as invertebrate populations have collapsed through mouse predation. There are no recent data for Kelp Gulls. On the other hand, many pairs of Brown Skuas predate mainly on burrowing petrels, thus will inform on the recovery of these nocturnal species from mouse predation. The skua data will be complemented by the implementation of an automated acoustic monitoring to detect the presence and coarse distribution of the most elusive and cryptic nocturnal species which are notoriously difficult to study. (Left – Eleanor Weideman in the field on Marion Island.)
Data obtained during the project will be swiftly shared to the Mouse-Free Marion programme manager Dr Anton Wolfaardt, to ensure updated information is available for the best planning of the mouse eradication.
Cover Image: Sub-Antarctic Skua – photo credit: Maelle Connan
Text supplied by Maelle Connan.
Photo Credits: Maelle Connan, Yinhla Shihlomuhe, Isabel Micklem.
by Ria Olivier | Aug 12, 2021 | Marion Island, Research, Science
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 here more about the project.
Text and Images by Prof Cynthia Chiang, 12 August 2021.
by Ria Olivier | Jul 31, 2021 | International Days, Marine Protected Area, Marion Island, Prince Edward Island, Prince Edward Islands
The 1st of August 2021 represents Africa’s first ever Marine Protected Area Day. “A Marine Protected Area (MPA) is an area of coastline or ocean that is specially protected for the benefit of people and nature The rich diversity of coastal and ocean ecosystems in South Africa are protected through a network of MPAs. Prior to 2019, there were 25 formally declared MPAs including 23 permanent coastal MPAs, including the large Prince Edward Islands (PEIs) MPA in the Southern Ocean. Thirty percent of South Africa’s territory in the Southern Ocean is protected by Prince Edward Islands MPA- https://www.marineprotectedareas.org.za
MARINE LIVING RESOURCES ACT 18 OF 1998 = – REGULATIONS FOR THE MANAGEMENT OF THE PRINCE EDWARD ISLANDS MARINE PROTECTED AREA – Published under Government Notice R422 in Government Gazette 36572, dated 21 June 2013. Gazette No. 18930, Notice No. 747. Commencement date: 1 September 1998 [Proc. No. 80, Gazette No. 19148]
Prince Edward Islands Marine protected Area is a “A volcanic sub-Antarctic wilderness teeming with hundreds of thousands of penguins, albatrosses, petrels and seals. The Prince Edward Islands are the jewels in South Africa’s island crown. They comprise of the larger Marion Island and the smaller Prince Edward Island, which were annexed by the South African navy in 1948. A permanent weather station has been in operation ever since that provides vital information needed to monitor weather and climate change in the Southern Ocean. The islands are home to unique plants and animals not found near the South African mainland. There are millions of penguins, albatrosses, petrels, seals and a transient group of killer whales. The MPA was proclaimed in 2013 and covers 30% of South Africa’s Southern Ocean territory, representing 80% of its ecosystem diversity. It protects the productive waters surrounding the islands, as well as important features such as seamounts. This ensures that the krill and fish stocks that top predators depend on are not overexploited. Historically, there was intense fishing for Patagonion toothfish, but this collapsed and has been restricted to two vessels to allow for their recovery. The terrestrial ecosystems are under threat from invasive house mice that were accidentally introduced in the 1800s. The Mouse Free Marion project plans to eradicate the mice in 2021 to allow for the ecological recovery of the island’s plant, insect and seabird communities.” –https://www.marineprotectedareas.org.za/prince-edward-islands-mpa
Prince Edward Island
Marion Island
Images, videos and documents available on the Antarctic Legacy of South Africa’s Archive:
by Ria Olivier | Jul 10, 2021 | Announcement, Marion Island, News, Newsletters>Marion Island Newsletters, Overwintering Team, SANAP, sub-Antarctic
In this edition:
- Meet the 78th Marion Island Overwintering Team (2021 – 2022)
- New killer whale calf
- Sealer, Frikkie van der Vyver, spot another Porbeagle shark on beach
- Midwinter 2021 celebration
- and more…
Click here to download this issue of The Wanderer.
Click here to view all The Wanderers (Marion Island newsletters) available on the ALSA Archive (since 1976).
Anché Louw, Antarctic Legacy of South Africa, 10 July 2021
by Ria Olivier | Jul 5, 2021 | Biosecurity, Environment, Invasion Biology, Marion Island, Mice Eradication, Research, Science
Marion Island (29 000 hectares) and Prince Edward (4500 hectares), collectively known as the Prince Edward Islands (PEIs) were annexed by South Africa in December 1947 and January 1948, respectively. Since then, South Africa has maintained a research and weather station on Marion Island, Prince Edward remains uninhabited. The PEIs were declared a Special Nature Reserve in 1995, a Ramsar Wetland Site of International Importance in 2007 and the surrounding waters a Marine Protected Area in 2009. The islands, governed by a suite of national environmental legislation under the Prince Edward Islands Management Plan (which includes a plan for the control and eradication of invasive alien species), are managed by the Oceans and Coasts Branch of the Department of Forestry, Fisheries and the Environment (DFFE) as the designated Management Authority under the National Environmental Management Protected Areas Act 57 of 2003.
The House Mouse Mus musculus (Photo Credit: Stefan Schoombie), inadvertently introduced to Marion Island by sealers in the early 1800s, successfully established on the island. With the human occupation of the island in 1948, four cats were brought to the island to control the mice in and around the station. However, these cats bred on the island, with their offspring becoming feral, and by the 1970s the population had increased to about 2000 individuals that were killing some 450 000 birds per year, mostly chicks of burrow-nesting species.
With South Africa’s successful eradication of the cats in 1991 (confirmed in 1992), until recently the largest island upon which this has been achieved, the mice continued to thrive and over the years have had devastating effects on Marion’s fragile ecosystem by negatively affecting invertebrate densities, impacting on the vegetation by consuming seed loads and preying upon the chicks of burrowing petrels (since the 1980s) and surface-breeding albatrosses (since 2003), with ‘scalpings’ occurring from 2009 and attacks on adult birds recorded more recently in 2019. (Image Credit: FitzPatrick Institute)
Marion Island supports some 25% of the world’s breeding population of Wandering Diomedea exulans, 12% of Sooty Phoebetria fusca and 7% of Grey-headed Thalassarche chrysostoma Albatrosses and smaller percentages of Light-mantled Albatrosses P. palpebrata and Grey Petrels Procellaria cinerea. It is clear something needs to be done or the severe impact of the mice could result in critical impacts on global populations and in the extirpation of up to 18 of the 27 bird species found on Marion within the next 30 to 100 years. (below l-r: Wandering Albatross, Sooty Albatross and chick, Grey-headed Albatross and chick. (Photo Credit: Stefan Schoombie)
In what would later become a partnership with DFFE, a Feasibility Study and Risk Assessment, undertaken in 2016 by John Parkes on behalf of BirdLife South Africa (BLSA), indicated that eradication was indeed possible. Also funded by BLSA, Draft Project and Operational Plans to eradicate mice on Marion Island were subsequently developed in 2018 by New Zealand eradication expert, Keith Springer, following an island visit. DFFE has been working closely with the UK’s Royal Society for the Protection of Birds (RSPB) over the last few years in support of the Gough Island Restoration Programme (GIRP) which aims to eradicate House Mice on Gough during June to September 2021. For more information and the latest updates on the GIRP, please visit: https://www.goughisland.com
On 12 May 2020, a Memorandum of Understanding (MoU) for the Mouse-Free Marion (MFM) Project was signed between DFFE and BLSA. Subsequently, a MFM Management Committee was established to initiate the development of the project and the two MoU partners are now working closely, together with various experts and institutions (including those involved with successful operations on other islands), on the detailed planning on all operational aspects required for the execution of this complex and costly project.
The MFM Project will make use of internationally agreed best-practice approaches to eradicate mice from the island. The Feasibility Study and draft Project and Operational Plans highlight that the only methodology offering any chance of success on an island of the size and topography of Marion Island is aerial spreading of bait containing a rodenticide with a proven capacity to eradicate mice. The systematic aerial sowing of bait will be conducted by GPS-guided helicopters with underslung bait buckets to ensure every single mouse territory is covered. The aerial baiting will be complemented by hand-baiting approaches in and around the base and other infrastructure on the island. If a single pregnant female is not targeted, it could result in the failure of the entire operation, but if it works, Marion Island will be by far the largest island in the world from which House Mice have successfully been eradicated.
Time window trade-offs have been assessed and it has been determined that winter (April/May – August/September) is the optimal period in which to implement an eradication operation. This is the non-breeding period for mice at Marion, when their population size is low and natural food resources are minimal, rendering bait more attractive. A winter-baiting operation also reduces the risks to non-target seabird species on the island, as many are not resident on the island during the winter months.
Currently, the eradication exercise is planned for the austral winter of 2023 and, to review and update the Project and Operational Plans, a Project Manager (Dr Anton Wolfaardt – photo left) and an Operations Manager (Mr Keith Springer – photo right) have been appointed.
A project of this nature requires substantial funding. To date, funds provided and committed are comprised largely of donations, government funding and crowd sourcing to save Marion Island’s seabirds. For more information and the latest updates on the MFM Project, as well as to ‘Sponsor a Hectare’ (which is currently standing at just over R2 million), please visit http://www.mousefreemarion.org.za
Text compiled by Carol Jacobs - Directorate: Biosecurity (DFFE)
Images from Marion Mouse Free Project, Stefan Schoombie,
FitzPatrick Institute and Antarctic Legacy of South Africa digital archive.
Cover Image: Otto Whitehead
,
Danielle Conri, field assistant on killer whales of the Marion Island Marine Mammal Program of Pretoria University celebrates spring day while crossing though Marion Island to sensus seals (photo credit Wild Ocean Wanderers)
Always good to make a snow angel.
This is particularly obvious in the Southern Ocean where a warmer and dryer environment allows the proliferation of species once limited by the cold climate. South African 
For the next three years, the new SANAP project co-led by Dr Maëlle Connan (Research Fellow in the 
(Above l-r: Sub-Antarctic Skua, Black-Faced Sheathbill)
On one hand, Black-faced Sheathbills and Kelp Gulls used to predate on terrestrial invertebrates, at least seasonally, but this behaviour has decreased in sheathbills as invertebrate populations have collapsed through mouse predation. There are no recent data for Kelp Gulls. On the other hand, many pairs of Brown Skuas predate mainly on burrowing petrels, thus will inform on the recovery of these nocturnal species from mouse predation. The skua data will be complemented by the implementation of an automated acoustic monitoring to detect the presence and coarse distribution of the most elusive and cryptic nocturnal species which are notoriously difficult to study. (Left – Eleanor Weideman in the field on Marion Island.)
Cover Image: Sub-Antarctic Skua – photo credit: Maelle Connan
The 1st of August 2021 represents Africa’s first ever Marine Protected Area Day. “A Marine Protected Area (MPA) is an area of coastline or ocean that is specially protected for the benefit of people and nature The rich diversity of coastal and ocean ecosystems in South Africa are protected through a network of MPAs. Prior to 2019, there were 25 formally declared MPAs including 23 permanent coastal MPAs, including the large Prince Edward Islands (PEIs) MPA in the Southern Ocean. Thirty percent of South Africa’s territory in the Southern Ocean is protected by Prince Edward Islands MPA- 
Prince Edward Islands Marine protected Area is a “A volcanic sub-Antarctic wilderness teeming with hundreds of thousands of penguins, albatrosses, petrels and seals. The Prince Edward Islands are the jewels in South Africa’s island crown. They comprise of the larger Marion Island and the smaller Prince Edward Island, which were annexed by the South African navy in 1948. A permanent weather station has been in operation ever since that provides vital information needed to monitor weather and climate change in the Southern Ocean. The islands are home to unique plants and animals not found near the South African mainland. There are millions of penguins, albatrosses, petrels, seals and a transient group of killer whales. The MPA was proclaimed in 2013 and covers 30% of South Africa’s Southern Ocean territory, representing 80% of its ecosystem diversity. It protects the productive waters surrounding the islands, as well as important features such as seamounts. This ensures that the krill and fish stocks that top predators depend on are not overexploited. Historically, there was intense fishing for Patagonion toothfish, but this collapsed and has been restricted to two vessels to allow for their recovery. The terrestrial ecosystems are under threat from invasive house mice that were accidentally introduced in the 1800s. The 
The House Mouse Mus musculus (Photo Credit: Stefan Schoombie), inadvertently introduced to Marion Island by sealers in the early 1800s, successfully established on the island. With the human occupation of the island in 1948, four cats were brought to the island to control the mice in and around the station. However, these cats bred on the island, with their offspring becoming feral, and by the 1970s the population had increased to about 2000 individuals that were killing some 450 000 birds per year, mostly chicks of burrow-nesting species. 
With South Africa’s successful eradication of the cats in 1991 (confirmed in 1992), until recently the largest island upon which this has been achieved, the mice continued to thrive and over the years have had devastating effects on Marion’s fragile ecosystem by negatively affecting invertebrate densities, impacting on the vegetation by consuming seed loads and preying upon the chicks of burrowing petrels (since the 1980s) and surface-breeding albatrosses (since 2003), with ‘scalpings’ occurring from 2009 and attacks on adult birds recorded more recently in 2019. (Image Credit: FitzPatrick Institute)
In what would later become a partnership with DFFE, a 
The systematic aerial sowing of bait will be conducted by GPS-guided helicopters with underslung bait buckets to ensure every single mouse territory is covered. The aerial baiting will be complemented by hand-baiting approaches in and around the 
A project of this nature requires substantial funding. To date, funds provided and committed are comprised largely of donations, government funding and crowd sourcing to save Marion Island’s seabirds. For more information and the latest updates on the MFM Project, as well as to ‘
