对早三叠世至中三叠世冈瓦纳植物区系的全面调查显示,植物与节肢动物之间的相互作用表现不足

IF 2.4 3区 环境科学与生态学 Q2 ECOLOGY
Holly-Anne Turner, Stephen McLoughlin, Chris Mays
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引用次数: 0

摘要

植物和节肢动物是陆地生态系统功能的主要驱动力。植物与节肢动物相互作用(PAIs)的痕量化石为通过地质时间评估陆地生态系统状态以及评估全球生物危机后草食性节肢动物食性的变化提供了一个独特的窗口。二叠纪末事件(EPE;约 252 Ma)导致潮湿的热带和高纬度生态系统中关键植物物种的消失以及几个主要昆虫类群的灭绝。随后的早三叠世至中三叠世显示出陆地生产力的下降,一系列二阶生物危机阻碍了陆地生产力的恢复。在这里,我们调查了冈瓦纳早三叠世至中三叠世花卉组合的记录,以寻找多物种动物群的证据,作为EPE之后生态系统恢复的标志。我们汇编了冈瓦纳中生代下统地层植物化石类群和PAIs的综合数据集,发现早三叠世至中三叠世的特异和一般花卉多样性有所增加。我们注意到,许多化石叶片丰富的地方缺乏 PAIs 报告,这可能被解释为与植物区系相比,节肢动物食性的恢复在环境退化后出现了延迟。然而,通过比较冈瓦纳地区之间的花卉组合,我们的研究结果还将缺乏PAIs的部分原因归咎于对这一时期的古昆虫学和古植物学研究相对较少。为了检验三叠纪 PAIs 是否存在报告不足的可能性,我们对澳大利亚三叠纪中期贝诺龙植物群进行了案例研究。与现有的澳大利亚早三叠世至中三叠世仅有三个植物标本的 PAI 报告不同,本次系统调查发现了 44 个与已发表实例相当的 PAI 痕迹,由 40 块植物化石碎片(占评估碎片的 7.77%;N = 591)构成。边缘取食痕迹是主要的功能取食类(FFG)(23 例:占评估碎片的 3.72%)。我们的综述强调了一些早三叠世和中三叠世冈瓦纳植物化石丰富的演替和现有的收藏,需要进一步研究。我们预测,对这些化石群的研究将极大地阐明早三叠世和中三叠世迅速变化的环境之间的关系及其对南半球植物和节肢动物群落的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comprehensive survey of Early to Middle Triassic Gondwanan floras reveals under-representation of plant–arthropod interactions
Plants and arthropods are primary drivers of terrestrial ecosystem function. Trace fossils of plant–arthropod interactions (PAIs) provide a unique window into assessing terrestrial ecosystem states through geological time and evaluating changes in herbivorous arthropod feeding guilds in the wake of global biotic crises. The end-Permian event (EPE; c. 252 Ma) resulted in the loss of keystone plant species from humid tropical and high-latitude ecosystems and the extinction of several major insect groups. The subsequent Early to Middle Triassic evinced diminished terrestrial productivity, punctuated by a series of second-order biotic crises that hindered recovery. Here, we survey records of Gondwanan Early to Middle Triassic floral assemblages for evidence of PAIs as an indication of ecosystem recovery following the EPE. We compiled a comprehensive dataset of fossil plant taxa and PAIs for lower Mesozoic strata of Gondwana, revealing an increase in specific and generic floral diversity from the Early to Middle Triassic. We noted a lack of PAIs reported from many localities with abundant fossil leaves, which might be interpreted to be a consequence of a post-EPE delay in the recovery of arthropod feeding guilds compared to the flora. However, by comparing floral assemblages between regions of Gondwana, our results also partly attribute the absence of PAIs to the relative paucity of palaeoichnological and palaeobotanical studies of this interval. To test for potential under-reporting of PAIs in the Triassic, we present a case study of the well-described Australian Middle Triassic Benolong Flora. In contrast to existing Australian Early to Middle Triassic PAI reports on only three plant specimens, this systematic investigation revealed 44 PAI traces comparable to published examples, hosted by 40 fossil plant fragments (7.77% of fragments assessed; N = 591). Margin-feeding traces constituted the dominant Functional Feeding Group (FFG) identified (23 examples: 3.72% of fragments assessed). Our review highlights several Early and Middle Triassic Gondwanan plant fossil-rich successions and existing collections that require further examination. We predict that investigations of these assemblages will greatly elucidate the relationships between rapidly changing environments during the Early and Middle Triassic and their effects on the plant and arthropod communities in the Southern Hemisphere.
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来源期刊
Frontiers in Ecology and Evolution
Frontiers in Ecology and Evolution Environmental Science-Ecology
CiteScore
4.00
自引率
6.70%
发文量
1143
审稿时长
12 weeks
期刊介绍: Frontiers in Ecology and Evolution publishes rigorously peer-reviewed research across fundamental and applied sciences, to provide ecological and evolutionary insights into our natural and anthropogenic world, and how it should best be managed. Field Chief Editor Mark A. Elgar at the University of Melbourne is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics and the public worldwide. Eminent biologist and theist Theodosius Dobzhansky’s astute observation that “Nothing in biology makes sense except in the light of evolution” has arguably even broader relevance now than when it was first penned in The American Biology Teacher in 1973. One could similarly argue that not much in evolution makes sense without recourse to ecological concepts: understanding diversity — from microbial adaptations to species assemblages — requires insights from both ecological and evolutionary disciplines. Nowadays, technological developments from other fields allow us to address unprecedented ecological and evolutionary questions of astonishing detail, impressive breadth and compelling inference. The specialty sections of Frontiers in Ecology and Evolution will publish, under a single platform, contemporary, rigorous research, reviews, opinions, and commentaries that cover the spectrum of ecological and evolutionary inquiry, both fundamental and applied. Articles are peer-reviewed according to the Frontiers review guidelines, which evaluate manuscripts on objective editorial criteria. Through this unique, Frontiers platform for open-access publishing and research networking, Frontiers in Ecology and Evolution aims to provide colleagues and the broader community with ecological and evolutionary insights into our natural and anthropogenic world, and how it might best be managed.
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