High taxonomic diversity and miniaturization in benthic communities under persistent natural CO2 disturbances.
High taxonomic diversity and miniaturization in benthic communities under persistent natural CO2 disturbances.
复制标题
持续自然二氧化碳扰动下底栖群落的高度分类多样性和小型化。
DOI：
10.1098/rspb.2022.2417
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
González-Delgado S
中科院分区：
文献类型：
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作者：
González-Delgado S
近年来，元条形码技术彻底改变了生态研究，促进了神秘物种的分化并揭示了以前隐藏的多样性。在当前气候变化和海洋酸化的情况下，生物多样性丧失是海洋生态系统的主要威胁之一。在这里，我们利用 DNA 元条形码来评估海洋酸化对海洋底栖生物群落的影响，以评估藻类和后生动物的多样性。具体来说，我们检查了位于拉帕尔马岛（加那利群岛）附近的 Fuencaliente CO2vent 系统产生的自然 pH 梯度。高分辨率 COI 元条形码分析首次揭示了酸化自然区域的高水平分类多样性。如此大量的物种源于对以前其他技术无法检测到的小型和神秘物种的检测。这些物种显然能够耐受未来海洋预期的酸化水平。因此，根据我们的结果，未来的亚热带群落预计将在酸化情景下保持较高的生物多样性价值，尽管由于小型藻类和无脊椎动物物种的主导地位，它们将趋于整体小型化，从而导致生态系统功能的变化。
Metabarcoding techniques have revolutionized ecological research in recent years, facilitating the differentiation of cryptic species and revealing previously hidden diversity. In the current scenario of climate change and ocean acidification, biodiversity loss is one of the main threats to marine ecosystems. Here, we explored the effects of ocean acidification on marine benthic communities using DNA metabarcoding to assess the diversity of algae and metazoans. Specifically, we examined the natural pH gradient generated by the Fuencaliente CO2vent system, located near La Palma Island (Canary Islands). High-resolution COI metabarcoding analyses revealed high levels of taxonomic diversity in an acidified natural area for the first time. This high number of species arises from the detection of small and cryptic species that were previously undetectable by other techniques. Such species are apparently tolerant to the acidification levels expected in future oceans. Hence and following our results, future subtropical communities are expected to keep high biodiversity values under an acidification scenario, although they will tend toward overall miniaturization due to the dominance of small algal and invertebrate species, leading to changes in ecosystem functions.