Dr. Ginger Rebstock

A fearful scourge to the penguin colonies: Southern giant petrel (Macronectes giganteus) predation on living Magellanic penguins (Spheniscus magellanicus) may be more common than assumed

Authors: Dr. Ginger Rebstock and Dr. P Dee BoersmaJournal: Marine Ecology Press SeriesDOI: https://doi.org/10.3354/meps14476 Excerpt from abstract: Southern giant petrels (Macronectes giganteus) are important consumers that range across the oceans throughout the southern hemisphere […] Here we describe a predation attempt by a trio of southern giant petrels on a molting adult Magellanic penguin (Spheniscus magellanicus) at the large colony at Punta Tombo, Argentina […] We suggest that living penguins—both fledglings and adults—may constitute a more seasonally significant proportion of the giant petrel diet than previously assumed, and their capture may represent a specialized predation technique.

A fearful scourge to the penguin colonies: Southern giant petrel (Macronectes giganteus) predation on living Magellanic penguins (Spheniscus magellanicus) may be more common than assumed Read More »

Center paper finalist for Cozzarelli Prize

The paper “Climate presses and pulses mediate the decline of a migratory predator”,” published last year ” is the finalist for the Cozzarelli Prize in the category Class VI: Applied Biological, Agricultural, and Environmental Sciences. Congrats to former Abrahms Lab postdoc Dr.T. J. Clark-Wolf, Dr. Dee Boersma, Dr. Ginger A. Rebstock, and Dr. Briana Abrahms! Read the full press release on the PNAS website.

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Sex-specific migratory behavior in a marine predator results in higher risks to females

Metadata Authors: Dr. Ginger Rebstock and Dr. P Dee BoersmaJournal: Marine Ecology Press SeriesDOI: https://doi.org/10.3354/meps14476 Summary Summary written by Sofia Denkovski Protecting Migratory Species Sexual Segregation of Magellanic Penguins Effects of sex-biased distribution on females What does this tell us?

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Field updates: Argentina, April 2023

Photo credit: Eric Wagner Thanks to the generous support of Zoo Augsburg in Germany, Dr. Ginger Rebstock and Dr. Eric Wagner were able to return to Punta Tombo for a couple of weeks in April. There, they put twenty satellite tags on penguins—ten females and ten males—that were about to start their post-breeding migration. From last year’s tagging effort, we know that females hug the coast more than males as they swim north, and pairs do not migrate together. Now we are trying to get a better sense of whether females and males use the same routes consistently from one

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Climate presses and pulses mediate the decline of a migratory predator

Authors: T. J. Clark-Wolf, P. Dee Boersma, Ginger A. Rebstock, and Briana AbrahmsJournal: Proceedings of the National Academy of SciencesDOI: 10.1073/pnas.2209821120 Long-term climate changes and extreme climate events differentially impact animal populations, yet whether and why these processes may act synergistically or antagonistically remains unknown…

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Making a perfect penguin_orig

Site fidelity increases reproductive success by increasing foraging efficiency in a marine predator

Authors: Ginger A Rebstock, Briana Abrams, P. Dee BoersmaJournal: Behavioral EcologyDOI: 10.1093/beheco/arac052 Seabirds must find food efficiently in the dynamic ocean environment to succeed at raising chicks. In theory, site familiarity, gained by prior experience in a place, should increase foraging efficiency when prey is predictable, and translate into increased reproductive success, though this is difficult to test empirically…

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