Correlation between the number of eDNA particles and species abundance is strengthened by warm temperature: simulation and meta-analysis
Correlation between the number of eDNA particles and species abundance is strengthened by warm temperature: simulation and meta-analysis
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温暖的温度加强了 eDNA 颗粒数量和物种丰度之间的相关性：模拟和荟萃分析
DOI：
10.1007/s10750-022-05036-y
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发表时间：
2022
期刊：
影响因子：
2.6
通讯作者：
Jo Toshiaki S.
中科院分区：
文献类型：
--
作者：
Jo Toshiaki;Yamanaka Hiroki;Jo Toshiaki S.
通过环境DNA（eDNA）分析精确的丰度估计是具有挑战性的，因为生物/非生物因素对水中eDNA持久性的无数影响。然而，环境条件如何影响eDNA浓度和物种丰度之间的关系仍不清楚。温度升高会加速eDNA在水中的降解和周转，这可能使eDNA信号更新鲜，从而加强了这种关系。在这里，提出了数学模型来模拟温度依赖性的eDNA降解的影响，建模的基础上，以前的荟萃分析，在不同的温度和eDNA生产方案下的eDNA浓度和物种丰度之间的关系。尽管不同温度下R2的差异相对较小，但无论eDNA的产生情况如何，R2值在较温暖的温度下往往较高。此外，eDNA生产率的方差越小，R2值越高。此外，以前的研究鱼类eDNA浓度和它们的丰度之间的关系进行了荟萃分析和相关系数的关系显着较高的温度。研究结果表明，考虑水温对于通过eDNA更好地估计丰度的重要性，尽管需要在建模框架中进一步考虑技术因素。
Precise abundance estimation via environmental DNA (eDNA) analysis is challenging because of myriad effects of biotic/abiotic factors on eDNA persistence in water. However, it remains unclarified how the relationship between eDNA concentration and species abundance is influenced by environmental conditions. Warm temperature can accelerate eDNA degradation and its turnover in water, which may make eDNA signals fresher and strengthen the relationship. Here, mathematical models were present to simulate the effect of temperature-dependent eDNA degradation, modeled based on the previous meta-analysis, on the relationship between eDNA concentration and species abundance under different temperature and eDNA production scenarios. TheR2values tended to be higher at warmer temperatures regardless of eDNA production scenarios, although differences inR2between temperatures were relatively small. Additionally, theR2values were higher for a smaller variance of eDNA production rate. Furthermore, previous studies regarding the relationship between fish eDNA concentration and their abundance were meta-analyzed and correlation coefficients of the relationship were significantly higher for warmer temperatures. The findings indicated the importance of taking water temperatures into account for better abundance estimation via eDNA, although further technical consideration in the modelling framework was needed.
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DOI：
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发表时间：
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期刊：
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