Pearman John K, Chust Guillem, Aylagas Eva, Villarino Ernesto, Watson James R, Chenuil Anne, Borja Angel, Cahill Abigail E, Carugati Laura, Danovaro Roberto, David Romain, Irigoien Xabier, Mendibil Iñaki, Moncheva Snejana, Rodríguez-Ezpeleta Naiara, Uyarra Maria C, Carvalho Susana
Red Sea Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia.
Coastal and Freshwater Group, Cawthron Institute, Nelson, New Zealand.
Mol Ecol. 2020 Dec;29(24):4882-4897. doi: 10.1111/mec.15692. Epub 2020 Nov 1.
Autonomous Reef Monitoring Structures (ARMS) have been applied worldwide to characterize the critical yet frequently overlooked biodiversity patterns of marine benthic organisms. In order to disentangle the relevance of environmental factors in benthic patterns, here, through standardized metabarcoding protocols, we analyse sessile and mobile (<2 mm) organisms collected using ARMS deployed across six regions with different environmental conditions (3 sites × 3 replicates per region): Baltic, Western Mediterranean, Adriatic, Black and Red Seas, and the Bay of Biscay. A total of 27,473 Amplicon Sequence Variants (ASVs) were observed ranging from 1,404 in the Black Sea to 9,958 in the Red Sea. No ASVs were shared among all regions. The highest number of shared ASVs was between the Western Mediterranean and the Adriatic Sea (116) and Bay of Biscay (115). Relatively high numbers of ASVs (103), mostly associated with the genus Amphibalanus, were also shared between the lower salinity seas (Baltic and Black Seas). We found that compositional differences in spatial patterns of rocky-shore benthos are determined slightly more by dispersal limitation than environmental filtering. Dispersal limitation was similar between sessile and mobile groups, while the sessile group had a larger environmental niche breadth than the mobile group. Further, our study can provide a foundation for future evaluations of biodiversity patterns in the cryptobiome, which can contribute up to 70% of the local biodiversity.
自主礁体监测结构（ARMS）已在全球范围内应用，以描述海洋底栖生物关键但常被忽视的生物多样性模式。为了厘清环境因素在底栖生物模式中的相关性，在此，我们通过标准化的元条形码协议，分析了使用ARMS在六个具有不同环境条件的区域（每个区域3个站点×3次重复）采集的固着生物和移动生物（<2毫米）：波罗的海、西地中海、亚得里亚海、黑海、红海和比斯开湾。共观察到27473个扩增子序列变体（ASV），范围从黑海的1404个到红海的9958个。所有区域之间没有共享的ASV。共享ASV数量最多的是西地中海和亚得里亚海（116个）以及比斯开湾（115个）。盐度较低的海域（波罗的海和黑海）之间也共享了相对较多数量的ASV（103个），其中大部分与藤壶属有关。我们发现，岩岸底栖生物空间模式的组成差异在一定程度上更多地由扩散限制而非环境过滤决定。固着生物和移动生物群体之间的扩散限制相似，而固着生物群体的环境生态位宽度比移动生物群体更大。此外，我们的研究可为未来评估隐生生物群落中的生物多样性模式提供基础，隐生生物群落可贡献高达70%的当地生物多样性。
