TY - JOUR
T1 - Sea-ice decline could keep zooplankton deeper for longer
AU - Flores, Hauke
AU - Veyssière, Gaëlle
AU - Castellani, Giulia
AU - Wilkinson, Jeremy
AU - Hoppmann, Mario
AU - Karcher, Michael
AU - Valcic, Lovro
AU - Cornils, Astrid
AU - Geoffroy, Maxime
AU - Nicolaus, Marcel
AU - Niehoff, Barbara
AU - Priou, Pierre
AU - Schmidt, Katrin
AU - Stroeve, Julienne
PY - 2023/10
Y1 - 2023/10
N2 - AbstractAs Arctic sea ice deteriorates, more light enters the ocean, causing largely unknown effects on the ecosystem. Using an autonomous biophysical observatory, we recorded zooplankton vertical distribution under Arctic sea ice from dusk to dawn of the polar night. Here we show that zooplankton ascend into the under-ice habitat during autumn twilight, following an isolume of 2.4 × 10−4 W m−2. We applied this trigger isolume to CMIP6 model outputs accounting for incoming radiation after sunset and before sunrise of the polar night. The models project that, in about three decades, the total time spent by zooplankton in the under-ice habitat could be reduced by up to one month, depending on geographic region. This will impact zooplankton winter survival, the Arctic foodweb, and carbon and nutrient fluxes. These findings highlight the importance of biological processes during the twilight periods for predicting change in high-latitude ecosystems.
AB - AbstractAs Arctic sea ice deteriorates, more light enters the ocean, causing largely unknown effects on the ecosystem. Using an autonomous biophysical observatory, we recorded zooplankton vertical distribution under Arctic sea ice from dusk to dawn of the polar night. Here we show that zooplankton ascend into the under-ice habitat during autumn twilight, following an isolume of 2.4 × 10−4 W m−2. We applied this trigger isolume to CMIP6 model outputs accounting for incoming radiation after sunset and before sunrise of the polar night. The models project that, in about three decades, the total time spent by zooplankton in the under-ice habitat could be reduced by up to one month, depending on geographic region. This will impact zooplankton winter survival, the Arctic foodweb, and carbon and nutrient fluxes. These findings highlight the importance of biological processes during the twilight periods for predicting change in high-latitude ecosystems.
UR - https://pearl.plymouth.ac.uk/context/gees-research/article/1534/viewcontent/s41558_023_01779_1.pdf
U2 - 10.1038/s41558-023-01779-1
DO - 10.1038/s41558-023-01779-1
M3 - Article
SN - 1758-678X
VL - 13
SP - 1122
EP - 1130
JO - Nature Climate Change
JF - Nature Climate Change
IS - 10
ER -