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微生物网络与沿海海底宏观动物生态状态的关联

Tonje Nilsen¹, Ragnhild Pettersen², Nigel Brian Keeley³

¹Norwegian University of Life Sciences, Ås 1433, Norway.

Environmental science & technology

|April 11, 2025

概括

沿海海底微生物群落基于宏观动物健康的变化. 氧化硫的微生物表明宏观动物丧失的风险更高,而氧化氨的微生物表明风险更低,影响了保护工作.

科学领域:

海洋微生物生态学
岩生态系统的运行
水产养殖影响评估水产养殖影响评估

背景情况:

沿海海底微生物群落经历了显著的生态变化,即使是轻微的宏观动物恶化.
了解这些微生物转移对于有效的沿海海底管理和保护至关重要.
以前的研究表明,宏观动物状态和微生物生态之间存在关键联系.

研究的目的:

在区域范围内调查海底微生物网络与宏观动物健康之间的关系.
评估水产养殖活动对这些微生物和宏观动物关系的影响.
确定关键的微生物参与者及其与宏观动物变化相关的代谢功能.

主要方法:

来自挪威和冰岛海岸的1546个海底样本的分析,在水产养殖暴露方面有所不同.
中原生物,宏观动物,化学和地理数据的比较.
利用356个高质量的元基因组组装基因组 (MAG) 来推断微生物代谢途径.

主要成果:

确定了两个主要的微生物网络:一个以硫氧化剂 (42.4%) 为中心,另一个以氧化剂 (44.0%) 为中心.
硫氧化剂网络与宏观动物丧失和接近水产养殖的10倍更高风险相关.
氨氧化剂网络与宏观动物丧失的风险降低了10倍,与水产养殖业距离更远;这些在冰岛没有.

结论:

由硫或氧化剂主导的微生物网络是温和宏观动物恶化的关键指标.
硫氧化器网络与氨保留,硫代谢和高亲和度氧气呼吸有关,表明压力.
氨氧化器网络与碳固定和低亲和度氧气呼吸有关,表明更健康的条件,应纳入海底监测.

关键词:

16个S元条形编码.冰岛冰岛冰岛冰岛冰岛挪威挪威挪威挪威挪威氨氧化剂是一种氨氧化剂.水产养殖的水产养殖环境监测环境监测环境监测宏观动物宏观动物海底沉积物的海底沉积物一把枪的元基因组学.硫氧化剂是一种硫氧化剂.

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