通过metabarcoding追踪气候变化诱导的生物入侵,通过存档的自然eDNA样本来追踪气候变化引起的生物入侵
Isabelle Junk1, Nina Schmitt1, Henrik Krehenwinkel1
1Department of Biogeography, Trier University, Universitätsring 15, Trier 54296, Germany.
Current biology : CB
|September 26, 2023
概括
档案中的蓝贝揭示了四十年的沿海生物多样性变化. 它们保存的DNA (eDNA) 追踪了一种侵入性的鱼.
科学领域:
- 海洋生态海洋生态学
- 环境DNA (eDNA) 分析分析
- 生物多样性监测 生物多样性监测
背景情况:
- 了解生态系统对环境变化的反应至关重要.
- 追溯生物监测数据有限,这阻碍了对人为影响的评估.
- 标准化的长期生物多样性数据对于生态研究至关重要.
研究的目的:
- 追踪四十年来沿海生态系统的时空空间生物多样性变化.
- 为了利用归档的蓝作为自然环境DNA (eDNA) 样本.
- 为了重建鱼Austrominius modestus的入侵轨迹和冲击.
主要方法:
- 对长达四十年的蓝贝样本时间序列的分析.
- 保存的贝组织的DNA测序以捕获相关的eDNA.
- 古代海洋社区的特征和入侵物种的动态.
主要成果:
- 确定了与相关的高度多样化的社区.
- 重建了Austrominius modestus的入侵轨迹和人口增长.
- 观察到本地种群的下降和人口动态 (崩和重新入侵).
结论:
- 存档的蓝作为历史生物多样性的有价值的天然eDNA样本.
- 该方法提供了关于社区集会和入侵过程的高分辨率时间数据.
- 这项研究克服了理解人类纪生物多样性变化的关键数据短缺.
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