Analyses of phenotypic differentiations among South Georgian Diving Petrel (Pelecanoides georgicus) populations reveal an undescribed and highly endangered species from New Zealand
Johannes H. Fischer, Igor Debski, Colin M. Miskelly, Charles A. Bost, Aymeric Fromant, Alan J. D. Tennyson, Jake Tessler, Rosalind Cole, Johanna H. Hiscock, Graeme A. Taylor, Heiko U. Wittmer
About This Project
The South Georgia Diving Petrel is a tiny, highly specialized, wing-propelled diver; a 'flying penguin'. The New Zealand population is nationally critical and numbers 150 individuals only. Storms are the main terrestrial threat, but offshore threats remain unknown. Complete understanding of all threats is paramount to guide successful conservation management. Thanks to generous backers, it may also be possible to assess juvenile mortality to further fine-tune conservation management.
Ask the ScientistsJoin The Discussion
What is the context of this research?
New Zealand is the seabird capital of the world, but its grand diversity is under serious threat from various fronts. Most research is addressed towards the at-sea threats of the large and charismatic albatrosses. Smaller species, including the South Georgia Diving Petrel, are often threatened onshore, but may also suffer from offshore threats, which often remain unresolved. Luckily, advancing technology offers a helping hand to assess pelagic threats of smaller seabirds, even of tiny ‘flying penguins’.
What is the significance of this project?
Seabirds are vital to ecosystems. They provide vital ecosystem functions such as the movement of soil and nutrient cycling. The South Georgia Diving Petrel is the only seabird in New Zealand specialized in burrowing in dunes. Therefore this population may consist of dune ecosystem engineers with considerable conservation value. Yes, a small ‘flying penguin’ can shape a whole ecosystem.
Unfortunately, the South Georgia Diving Petrel in New Zealand has suffered massive population losses and is currently limited to Codfish Island (Whenua Hou) west of Stewart Island, New Zealand. The current population numbers only 150 individuals and is consequently considered nationally critical.
What are the goals of the project?
During the 2015/2016 breeding season, I identified storms as the major terrestrial threat to the South Georgia Diving Petrel population. To get a complete understanding of the dangers these little 'flying penguins' face, offshore threats need to be assessed. By using distributional data collected with miniaturized GLS tags, I can infer potential offshore threats. Consequently, I can guide future conservation management to safeguard this species. Protection of this species will result in secured ecosystem functions provided by this species.
In addition, by banding fledging chicks, I can assess juvenile mortality rates. This parameter is likely to be an important part of the population dynamics of this species. Understanding population dynamics is key to designing conservation strategies.
I operate on a limited budget and access to remote islands is expensive. I will use the funds for this project to maximize chances to collect GLS tags that were deployed in 2015. I need to collect these tags in order to retrieve the data. Thanks to the Dunes Trust and the ASG, I have met half of my funding requirements for next field season. Catching specific individuals is time consuming and additional funding translates directly into two more weeks on Codfish Island, and thus maximizes chances of collecting all 10 GLS tags, which is critical to conservation management. Once collected, I will extract data and assess the distribution and offshore threats of the South Georgia Diving Petrel. Furthermore, part of the funding will be used to genetically sex the tagged birds to assess sex-specific distributions.
Thanks to very generous backers, I am able to add a stretch goal! During a second trip in early 2017, I aim to catch and band chicks to assess juvenile mortality.
Meet the Team
Originally I come from the Netherlands, but a long and windy road across the globe guided by a drive to conserve our vanishing biodiversity has led me to New Zealand. Past projects I was involved with include the conservation of Pink Pigeons on Mauritius and Orangutans on Indonesian Borneo. One particular project, surveying Petrels on Round Island, Mauritius, has stuck with me and sparked my love for seabirds. Now I am studying the conservation of the South Georgia Diving Petrel for my MSc at Victoria University, Wellington, New Zealand. In the past breeding season I already uncovered many secrets of this little-known species. In the upcoming breeding season I hope to expand our understanding of these ‘flying penguins’ to the pelagic realm.
I am pleased to offer a limited-edition print of a South Georgia Diving Petrel to every donor contributing $100 or more! This print has been custom-made for this project by Ayuwat Jearwattanakanok, an incredibly talented artist and dedicated conservationist. Ayuwat has provided amazing illustrations for various global projects, including the new Handbook Of The Shorebirds of the World, and I am very grateful for his contribution to the 'flying penguin' project!
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