A perspective on the ecological and evolutionary consequences of phenological variability in lake ice on north-temperate lakes
A perspective on the ecological and evolutionary consequences of phenological variability in lake ice on north-temperate lakes
复制标题
北温带湖泊冰物候变化的生态和进化后果的视角
DOI：
10.1139/cjfas-2021-0221
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发表时间：
2022
影响因子：
2.4
通讯作者：
Gerrish, Gretchen A.
中科院分区：
文献类型：
--
作者：
Feiner, Zachary S.;Dugan, Hilary A.;Lottig, Noah R.;Sass, Greg G.;Gerrish, Gretchen A.
气候变化不仅导致物候事件的平均时间发生变化，而且还导致它们的变异性和可预测性发生变化。不断增加的物候变异性创造了一个被严重研究不足的随机环境，特别是在水生生态系统中。我们提供了对日益不可预测的水生生境的可能影响的观点，包括更频繁的营养异步性和水文状况的改变，重点是湖泊中的冰离物候。日益频繁的物候极端现象可能会限制有机体优化适应变暖环境所需特征的能力。使用美国威斯康星州埃斯卡纳巴湖独特的长期生态数据集作为案例研究，我们发现平均结冰日期正在提前并变得更加可变，从而改变了湖泊条件，产生了独立的食物链反应，对鱼类产卵时间和补充成功产生了影响。需要从基因到生态系统了解水生群落对日益多变的物候的反应。我们的观点表明，在种内和种间层面上对多样性进行管理，将成为保护有弹性的水生生态系统的首要任务。
Climate change is leading to shifts in not only the average timing of phenological events, but also their variance and predictability. Increasing phenological variability creates a stochastic environment that is critically understudied, particularly in aquatic ecosystems. We provide a perspective on the possible implications for increasingly unpredictable aquatic habitats, including more frequent trophic asynchronies and altered hydrologic regimes, focusing on ice-off phenology in lakes. Increasingly frequent phenological extremes may limit the ability of organisms to optimize traits required to adapt to a warming environment. Using a unique, long-term ecological dataset on Escanaba Lake, WI, USA, as a case study, we show that the average date of ice-off is shifting earlier and becoming more variable, thus altering limnological conditions and yielding uncoupled food web responses with ramifications for fish spawn timing and recruitment success. A genes-to-ecosystems understanding of the responses of aquatic communities to increasingly variable phenology is needed. Our perspective suggests that management for diversity, at the intra- and interspecific levels, will become paramount for conserving resilient aquatic ecosystems.