First Record of Fungal Diversity in the Tropical and Warm-Temperate Middle Miocene Climate Optimum Forests of Eurasia
First Record of Fungal Diversity in the Tropical and Warm-Temperate Middle Miocene Climate Optimum Forests of Eurasia
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DOI：
10.3389/ffgc.2021.768405
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发表时间：
2021-12
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通讯作者：
Ingrid Romero;N. N. Nuñez Otaño-N.;M. Gibson;T. Spears;C. J. Fairchild;Laikin Tarlton;S. Jones;H. Belkin;S. Warny;M. Pound;J. O'Keefe
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作者：
Ingrid Romero;N. N. Nuñez Otaño-N.;M. Gibson;T. Spears;C. J. Fairchild;Laikin Tarlton;S. Jones;H. Belkin;S. Warny;M. Pound;J. O'Keefe
中中新世气候适宜期（MMCO）是过去2300万年来最温暖的时期，也是未来气候变化情景的最佳模拟期之一。真菌作为植物残体的主要分解者，并通过它们作为共生体、寄生物和内生生物与植物和其他生物体的相互作用，在陆地碳循环中发挥关键作用。因此，他们在化石记录中的研究，特别是在MMCO期间，对于更好地了解过去类似环境中的生物多样性变化和陆地碳循环动态，以及模拟未来的生态和气候情景至关重要。化石记录还提供了一个独特的长期，大规模的数据集，以评估真菌组合动态跨越长时间和空间尺度，提供了一个更好的了解生态因素如何影响组合的发展，随着时间的推移。在这项研究中，我们评估的真菌多样性和社区组成记录在两个地质剖面中中新世从泰国和斯洛伐克的煤矿。我们使用有无数据来量化每个地方的真菌多样性。孢子和其他真菌遗骸尽可能被鉴定为现代分类群;当这种相关性不可能时，使用实验室代码和化石名称。这项研究是泰国的第一项此类研究，它扩展了斯洛伐克的现有工作。我们的研究结果表明，共有281形态分类群。这项工作将使我们能够利用现代生态数据对研究区域的生态系统特征和群落动态进行推断。它为基于现代真菌生态学分析的过去真菌多样性研究开辟了新的视野。它还揭示了真菌物种丰富度和群落组成的全球变化如何受到不同气候条件的影响，以及过去温度的快速上升，从而对近期气候的未来做出推断。
The middle Miocene Climate Optimum (MMCO) was the warmest interval of the last 23 million years and is one of the best analogs for proposed future climate change scenarios. Fungi play a key role in the terrestrial carbon cycle as dominant decomposers of plant debris, and through their interactions with plants and other organisms as symbionts, parasites, and endobionts. Thus, their study in the fossil record, especially during the MMCO, is essential to better understand biodiversity changes and terrestrial carbon cycle dynamics in past analogous environments, as well as to model future ecological and climatic scenarios. The fossil record also offers a unique long-term, large-scale dataset to evaluate fungal assemblage dynamics across long temporal and spatial scales, providing a better understanding of how ecological factors influenced assemblage development through time. In this study, we assessed the fungal diversity and community composition recorded in two geological sections from the middle Miocene from the coal mines of Thailand and Slovakia. We used presence-absence data to quantify the fungal diversity of each locality. Spores and other fungal remains were identified to modern taxa whenever possible; laboratory codes and fossil names were used when this correlation was not possible. This study represents the first of its kind for Thailand, and it expands existing work from Slovakia. Our results indicate a total of 281 morphotaxa. This work will allow us to use modern ecological data to make inferences about ecosystem characteristics and community dynamics for the studied regions. It opens new horizons for the study of past fungal diversity based on modern fungal ecological analyses. It also sheds light on how global variations in fungal species richness and community composition were affected by different climatic conditions and under rapid increases of temperature in the past to make inferences for the near climatic future.