Denux Manon, Armenteros Maickel, Weber Laura, Miller Carolyn A, Sántha Kinga, Apprill Amy
Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, MA 02543, USA.
Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mazatlán 82040, Mexico.
Microorganisms. 2024 Sep 3;12(9):1822. doi: 10.3390/microorganisms12091822.
Globally, coral reef ecosystems are undergoing significant change related to climate change and anthropogenic activities. Yet, the Cuban archipelago of Jardines de la Reina (JR) has experienced fewer stressors due to its geographical remoteness and high level of conservation. This study examines the surface and benthic reef water microbial communities associated with 32 reef sites along the JR archipelago and explores the relationship between the community composition of reef microorganisms examined using bacterial and archaeal small subunit ribosomal RNA gene (16S rRNA gene) sequencing compared to geographic, conservation/protection level, environmental, physicochemical, and reef benthic and pelagic community features. Reef nutrient concentrations were low and microbial communities dominated by picocyanobacteria and SAR11 and SAR86 clade bacteria, characteristic of an oligotrophic system. Reef water microbial community alpha and beta diversity both varied throughout the archipelago and were strongly related to geography. Three sites in the western archipelago showed unique microbial communities, which may be related to the hydrogeography and influences of the channels linking the Ana Maria gulf with the Caribbean Sea. Overall, this work provides the first extensive description of the reef microbial ecology of the Caribbean's 'Crown Jewel' reef system and a framework to evaluate the influence of ongoing stressors on the reef microorganisms.
在全球范围内，珊瑚礁生态系统正经历与气候变化和人类活动相关的重大变化。然而，由于地理位置偏远且保护水平高，古巴的女王花园群岛（JR）受到的压力源较少。本研究调查了JR群岛32个珊瑚礁站点的表层和底栖珊瑚礁水域微生物群落，并探讨了使用细菌和古菌小亚基核糖体RNA基因（16S rRNA基因）测序检测的珊瑚礁微生物群落组成与地理、保护/保护水平、环境、物理化学以及珊瑚礁底栖和浮游生物群落特征之间的关系。珊瑚礁营养浓度较低，微生物群落以聚球藻、SAR11和SAR86分支细菌为主，这是贫营养系统的特征。整个群岛的珊瑚礁水域微生物群落的α和β多样性均有所不同，且与地理密切相关。群岛西部的三个站点显示出独特的微生物群落，这可能与连接安娜玛丽亚湾和加勒比海的海峡的水文地理和影响有关。总体而言，这项工作首次广泛描述了加勒比“皇冠上的宝石”珊瑚礁系统的珊瑚礁微生物生态学，并提供了一个框架来评估持续压力源对珊瑚礁微生物的影响。
