Shifts in competitive structures can drive variation in species' phenology
Shifts in competitive structures can drive variation in species' phenology
复制标题
竞争结构的变化可能导致物种物候的变化
DOI：
10.1002/ecy.4160
复制
发表时间：
2023
期刊：
影响因子：
4.8
通讯作者：
Ernest, S. K. Morgan
中科院分区：
文献类型：
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作者：
Dumandan, Patricia Kaye T.;Yenni, Glenda M.;Ernest, S. K. Morgan
对于许多物种来说，有充分记载的对人为气候变化的反应是其生活史各个方面的转变，包括其时间或物候。通常，这些物候变化与非生物因素的变化有关，这些非生物因素被用作资源可用性或其他合适条件的替代品。然而，资源的可获得性也会受到竞争的影响，但竞争对物候的影响比非生物驱动因素的影响研究得更少。我们将广义加性模型（GAM）拟合到美国西南部监测的小型哺乳动物的长期实验数据集，并表明竞争景观的改变可以推动繁殖时间和流行率的变化，并且相对于占主导地位的竞争对手，其他物种对环境因素的反应不那么具体。这些结果表明，可塑性的物候反应，这是经常描述的非生物因素的年度变化的背景下，可以发生在生物背景下，以及。在不同的生物条件下，这里显示的物候反应的变化进一步表明，一个更微妙的理解变化的生物相互作用是有用的，以更好地了解和预测在不断变化的世界中的生物多样性模式。
For many species, a well documented response to anthropogenic climate change is a shift in various aspects of its life history, including its timing or phenology. Often, these phenological shifts are associated with changes in abiotic factors used as proxies for resource availability or other suitable conditions. Resource availability, however, can also be impacted by competition, but the impact of competition on phenology is less studied than abiotic drivers. We fit generalized additive models (GAMs) to a long‐term experimental dataset on small mammals monitored in the southwestern United States and show that altered competitive landscapes can drive shifts in breeding timing and prevalence, and that, relative to a dominant competitor, other species exhibit less specific responses to environmental factors. These results suggest that plasticity of phenological responses, which is often described in the context of annual variation in abiotic factors, can occur in response to biotic context as well. Variation in phenological responses under different biotic conditions shown here further demonstrates that a more nuanced understanding of shifting biotic interactions is useful to better understand and predict biodiversity patterns in a changing world.