Temperature is a poor proxy for synergistic climate forcing of plankton evolution.
Temperature is a poor proxy for synergistic climate forcing of plankton evolution.
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DOI：
10.1098/rspb.2018.0665
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发表时间：
2018-07-18
期刊：
影响因子：
--
通讯作者：
Ezard THG
中科院分区：
文献类型：
--
作者：
Brombacher A;Wilson PA;Bailey I;Ezard THG
从分子到生态系统的各级生物多样性的变化往往与气候变化有关，而气候变化的普遍表现是温度。因此，温度代用指标与各种动物和植物群多样性格局之间的强相关性暗示了生物多样性动态的全球环境驱动机制。然而，气候由许多相互作用的变量组成。物种可能会对整个气候系统做出反应，而不是其个别方面。在这里，我们研究了12 633个人的两个物种的浮游有孔虫的生态和形态特征相似的生态，但对比的进化结果。我们的研究结果表明，形态和生态变化与多种环境因子之间的相互作用。包括气候变量之间相互作用的模型解释的大小、形状和丰度变化的变化至少是假设气候参数独立运行的模型的两倍。没有占主导地位的气候驱动因素可以确定：温度单独解释非常小的变化，通过我们的高分辨率的时间序列，这意味着需要一个多变量的方法来理解进化的非生物强迫的反应。我们的研究结果警告使用“银弹”的环境参数，以代表全球气候，同时研究非生物变化的进化反应，并表明，更全面的重建古生物动力学需要多个生物和非生物层面。
Changes in biodiversity at all levels from molecules to ecosystems are often linked to climate change, which is widely represented univariately by temperature. A global environmental driving mechanism of biodiversity dynamics is thus implied by the strong correlation between temperature proxies and diversity patterns in a wide variety of fauna and flora. Yet climate consists of many interacting variables. Species probably respond to the entire climate system as opposed to its individual facets. Here, we examine ecological and morphological traits of 12 633 individuals of two species of planktonic foraminifera with similar ecologies but contrasting evolutionary outcomes. Our results show that morphological and ecological changes are correlated to the interactions between multiple environmental factors. Models including interactions between climate variables explain at least twice as much variation in size, shape and abundance changes as models assuming that climate parameters operate independently. No dominant climatic driver can be identified: temperature alone explains remarkably little variation through our highly resolved temporal sequences, implying that a multivariate approach is required to understand evolutionary response to abiotic forcing. Our results caution against the use of a ‘silver bullet’ environmental parameter to represent global climate while studying evolutionary responses to abiotic change, and show that more comprehensive reconstruction of palaeobiological dynamics requires multiple biotic and abiotic dimensions.
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作者：
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DOI：
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