Artemisia pollen dataset for exploring the potential ecological indicators in deep time
Artemisia pollen dataset for exploring the potential ecological indicators in deep time
复制标题
用于探索深部潜在生态指标的蒿花粉数据集
DOI：
10.5194/essd-14-3961-2022
复制
发表时间：
2022-09-02
影响因子：
11.4
通讯作者：
Wang, Yu-Fei
中科院分区：
文献类型：
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作者：
Lu, Li-Li;Jiao, Bo-Han;Wang, Yu-Fei
蒿属植物与藜科植物沿着，是北方半球荒漠和干旱草原的优势植物。蒿属花粉生产力高、分布广、易于识别，常被作为衡量干旱程度和区分草原与荒漠植被的生态指标，其花粉相对丰度比（C/A）是衡量藜科植物与蒿属植物花粉相对丰度的重要指标。然而，长期以来，孢粉学界对蒿属花粉评价干旱程度的观点存在分歧。为了解决这一问题，我们首先从蒿属的9个分支和3个外类群中选择了36个种，基于系统发育框架，试图覆盖花粉形态变异的最大范围。然后，使用标准方法进行取样、实验、摄影和测量。在这里，我们提出的花粉数据集包含4018原始花粉照片，9360花粉形态特征测量，30 858源植物发生的信息，以及相应的环境因素。对花粉形态特征进行聚类分析，将蒿属花粉分为3类。将蒿属的三种花粉类型与全球陆地生物群落进行比较，发现不同花粉类型的蒿属植物具有不同的生境范围。这些发现改变了传统上认为蒿属植物仅限于干旱和半干旱环境的观念。我们设计的数据框架是开放的，可扩展的新的花粉数据的蒿属世界各地。在未来，通过这些花粉数据集将花粉形态与栖息地联系起来，将创造更多的知识，从而提高过去地质学中生态环境的分辨率。蒿属花粉数据集可在Zenodo（https：//doi.org/10.5281/zenodo.6900308; Lu等人，2022年）。
Artemisia, along with Chenopodiaceae, is the dominant component growing in the desert and dry grassland of the Northern Hemisphere. Artemisia pollen with its high productivity, wide distribution, and easy identification is usually regarded as an eco-indicator for assessing aridity and distinguishing grassland from desert vegetation in terms of the pollen relative abundance ratio of Chenopodiaceae/Artemisia (C/A). Nevertheless, divergent opinions on the degree of aridity evaluated by Artemisia pollen have been circulating in the palynological community for a long time. To solve the confusion, we first selected 36 species from nine clades and three outgroups of Artemisia based on the phylogenetic framework, which attempts to cover the maximum range of pollen morphological variation. Then, sampling, experiments, photography, and measurements were taken using standard methods. Here, we present pollen datasets containing 4018 original pollen photographs, 9360 pollen morphological trait measurements, information on 30 858 source plant occurrences, and corresponding environmental factors. Hierarchical cluster analysis on pollen morphological traits was carried out to subdivide Artemisia pollen into three types. When plotting the three pollen types of Artemisia onto the global terrestrial biomes, different pollen types of Artemisia were found to have different habitat ranges. These findings change the traditional concept of Artemisia being restricted to arid and semi-arid environments. The data framework that we designed is open and expandable for new pollen data of Artemisia worldwide. In the future, linking pollen morphology with habitat via these pollen datasets will create additional knowledge that will increase the resolution of the ecological environment in the geological past. The Artemisia pollen datasets are freely available at Zenodo (https://doi.org/10.5281/zenodo.6900308; Lu et al., 2022).