COVER PHOTO: To quantify how individuals modulate their behavioral activities when facing the extreme seasonality of the high-Artic and how this might affect life-history events, Chimienti et al. (Ecosphere, Volume 12, Issue 6, Article e03565; https://doi.org/10.1002/ecs2.3565) collected high-resolution accelerometer data, over an entire year, from seven muskox females (Ovibos moschatus) with different reproductive statuses. Behavior of individuals showed clear seasonal patterns with distinct signatures depending on survival and reproductive status. Mortality events followed drastically reduced time spent foraging and searching for food during winter, while parturition events were associated with marked behavioral shifts around parturition with a clear reduction in foraging behavior and increased activity. Photo credit: Lars H. Hansen.

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封面照片：为了量化个体在面临北极的极端季节性时如何调节他们的行为活动，以及这可能如何影响生活史事件，Chimienti 等人。（生态圈，第 12 卷，第 6 期，第 e03565 条；https://doi.org/10.1002/ecs2.3565）从七只麝香雌性（Ovibos moschatus) 具有不同的生殖状态。个体的行为表现出明显的季节性模式，具有不同的特征，取决于生存和生殖状态。死亡事件发生后，冬季觅食和寻找食物的时间大大减少，而分娩事件与分娩前后的显着行为转变有关，觅食行为明显减少，活动增加。图片来源：Lars H. Hansen。