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Declining juvenile survival of Adelie penguins in Antarctica

Barracho, T.; Bardon, G.; Choquet, R.; Houstin, A.; Winterl, A.; Beaulieu, M.; Blanchard, P.; Cornet, C. C.; Cristofari, R.; Raclot, T.; Richter, S.; Chatelain, N.; Courtecuisse, J.; Brucker, M.; Zitterbart, D. P.; Lecomte, N.; Le Bohec, C.

2024-08-26 ecology
10.1101/2024.08.23.609289 bioRxiv
Show abstract

As summer sea ice around Antarctica reaches modern lows, quantifying the demographic response of polar species to such environmental changes becomes critical. To achieve this, synthesizing results across species ranges and elucidating the environmental factors driving population dynamics are key. Adelie penguins are considered reliable indicators of changes in Antarctica but the processes through which sea ice and other environmental factors shape their population dynamics are still unclear, especially for critical age groups such as juveniles. Using a 17-year dataset of Adelie penguins electronically tagged in Adelie Land (Antarctica), we found that juvenile survival probability was most impacted by sea ice concentration near their natal colony right after fledging, with lower ice concentrations detrimental to survival. Importantly, we found that juvenile survival declined by 32% from 2007 to 2020, mirroring trends at other distant colonies. The emergence of similar patterns at opposite ends of the continent may be an early signal for shifts in population trends expected from climate change.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.