海洋暗光层颗粒附着微生物的群落演替和生态功能
- 分享到:
摘要：
暗光层是各类元素到达更深水域或海底的必经通道,是海洋对颗粒有机物(particulate organic mat- ter,POM)进行显著降解和生物利用的水层.微生物参与了暗光层中有机物的迁移转化过程 ,但对其群落演替和代谢活性知之甚少.研究总结了暗光层的环境特征及相关微生物类群的结构和功能,并结合不同海域暗光层上下界面垂直水层中的颗粒附着微生物的群落演替、碳源利用及潜在的生态功能,来解析微生物在暗光层中的空间动态变化,并反映该生态位中微生物对碳源的选择偏好. 在未来全球变暖与海洋生物泵作用相对增强的背景下.今后的研究更需聚焦暗光层中的微生物类群,并统一POM粒级划分标准 ,来阐明暗光层中微型碳泵和深海碳沉降的调控及贡献.
The twilightzone is the essentialpassageforvarious elements to reach deeperwatersorthe seabed, and deg- radation and utilization oftheparticulateorganicmatter(POM) weresignificantlyoccurred. Microbesareactivelyinvolved in the migration and transformation ofthe POM in the twilightzone. However, littleisknown abouttheircommunity succession and metabolic activity associated withdifferentparticles in the twilightzone. We summarized the environmentalfeaturesofthe twi- lightzone and the structureand function ofthe related microbialgroups. Togetherwith and analyzed the spatialdynamic chan- gesofprokaryotesin thetwilightzonebycombining thecommunitysuccession, carbon sourceutilization, and potentialecologi- calfunctionsofparticulateattached prokaryotes in theverticalwaterlayerfrom the upperto the lowerboundaryofthe twilight zone. Italso reflected the initialpreferenceofthe carbon sourcebythe naturalmicrobes in thisniche. In the contextoftherela- tively enhanced pumping effectof marine organisms in the future globalwarming, future research needs to focus more on the microbialgroups in the twilight zone, and unify the POM particle size classification criteria to clarify the spatial succession process of microorganisms in the twilightzone and their regulatory contributions to deep-sea carbon deposition.
作者：
荆红梅,刘皓,张玥,刘红斌
JingHongmei,LiuHao,ZhangYue,LiuHongbing
机构地区：
中国科学院深海科学与工程研究所；南方海洋科学与工程广东省实验室；
中国科学院三亚海洋科学综合实验室；香港科技大学海洋科学系
引用本文：
荆红梅,刘皓,张玥等.海洋暗光层颗粒附着微生物的群落演替和生态功能[J].
betway官方app 学报(自然科学版),2024,52(5) :126-133.
Jing Hongmei,Liu Hao,ZhangYue,etal.Community succession and ecologicalfunc- tions ofparticle attached microbes in the twilightzone[J] .Journalof Henan NormalUniversity(NaturalScience Edition) ,2024,52(5) :126-133. DOI:10. 16366/j. cnki.1000-2367. 2023. 04. 01. 0001.
基金;
国家自然科学基金 ;三亚市院地科技合作项目 ; 国家重点研发计划; 海南省自然科学基金
关键词：
暗光层；颗粒有机物；群落演替；碳源利用；生态功能
particulateorganic matter; community succession; carbon source utilization; ecologicalfunc- tion
分类号：
Q938. 8
