Sea-ice decline could keep zooplankton deeper for longer

Sea-ice decline could keep zooplankton deeper for longer
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海冰减少可能会使浮游动物在更深处停留更长时间

DOI:
10.1038/s41558-023-01779-1
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发表时间:
2023
影响因子:
30.7
通讯作者:
Flores H
Flores H
中科院分区:
地球科学1区
文献类型:
--
作者:
Flores H

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随着北极海冰的恶化,更多的光进入海洋,对生态系统造成了很大程度上未知的影响。利用一个自主的生物物理观测站,我们记录了北极海冰下的浮游动物的垂直分布从黄昏到黎明的极夜。在这里,我们表明,浮游动物在秋季黄昏时上升到冰下栖息地,遵循2.4 × 10−4W m−2的等熵线。我们将此触发隔离器应用于CMIP 6模型输出,说明日落后和极夜日出前的入射辐射。这些模型预测,在大约30年的时间里,浮游动物在冰下栖息地的总时间可能会减少多达一个月,这取决于地理区域。这将影响浮游动物的冬季生存,北极食物网,以及碳和营养通量。这些发现突出了生物过程的重要性,在黄昏时期预测高纬度生态系统的变化。
As 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 × 10−4W 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.
DOI: 10.1126/sciadv.abj7536
发表时间: 2022-02-18
期刊: Science advances
影响因子: 13.6
作者:
Snoeijs-Leijonmalm P;Flores H;Sakinan S;Hildebrandt N;Svenson A;Castellani G;Vane K;Mark FC;Heuzé C;Tippenhauer S;Niehoff B;Hjelm J;Hentati Sundberg J;Schaafsma FL;Engelmann R;EFICA-MOSAiC Team
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期刊: POLAR BIOLOGY
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