Low-salinity transitions drive abrupt microbial response to sea-level change,Ecology Letters

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Low-salinity transitions drive abrupt microbial response to sea-level change
Ecology Letters ( IF 7.6 ) Pub Date : 2021-10-27 , DOI: 10.1111/ele.13893
Alex Whittle _{1,

2} , Robert L Barnett _{1,

3} , Dan J Charman ₁ , Angela V Gallego-Sala ₁

Affiliation

The salinisation of many coastal ecosystems is underway and is expected to continue into the future because of sea-level rise and storm intensification brought about by the changing climate. However, the response of soil microbes to increasing salinity conditions within coastal environments is poorly understood, despite their importance for nutrient cascading, carbon sequestration and wider ecosystem functioning. Here, we demonstrate deterioration in the productivity of a top-tier microbial group (testate amoebae) with increasing coastal salinity, which we show to be consistent across phylogenetic groups, salinity gradients, environment types and latitude. Our results show that microbial changes occur in the very early stages of marine inundation, presaging more radical changes in soil and ecosystem function and providing an early warning of coastal salinisation that could be used to improve coastal planning and adaptation.

中文翻译：

低盐度转变推动微生物对海平面变化的突然反应

由于气候变化导致海平面上升和风暴加剧，许多沿海生态系统的盐碱化正在进行中，预计未来还会继续发生盐碱化。然而，尽管土壤微生物对养分级联、碳固存和更广泛的生态系统功能很重要，但人们对沿海环境中盐度增加的反应知之甚少。在这里，我们证明了随着沿海盐度的增加，顶级微生物群（testate amoebae）的生产力下降，我们表明这在系统发育群、盐度梯度、环境类型和纬度之间是一致的。我们的结果表明，微生物的变化发生在海洋淹没的早期阶段，

更新日期：2021-12-10

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