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Water mass-driven spatial effects and environmental heterogeneity shape microeukaryote biogeography in a subtropical, hydrographically complex ocean system - A case study of ciliates.
Sun, Ping; Wang, Ying; Laws, Edward; Huang, Bangqin.
Afiliación
  • Sun P; Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China. Electronic address:
  • Wang Y; Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China.
  • Laws E; Department of Environmental Sciences, School of the Coast and Environment, Louisiana State University, Baton Rouge, LA 70803, USA.
  • Huang B; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China.
Sci Total Environ ; 706: 135753, 2020 Mar 01.
Article en En | MEDLINE | ID: mdl-31836222
The relative importance of geographic distance and depth in shaping microeukaryote community composition on a regional scale remains unclear, especially how that composition is related to the movement of water masses. Here, we collected 156 water samples across the Taiwan Strait, which is characterized by complex topography and dynamic circulation, to investigate the composition of the ciliate community with high-throughput sequencing of the 18S rRNA gene transcript. Ciliate alpha diversity exhibited strong correlations with water chemistry, food abundance, and geographic distance; approximately 50% of the variance of the diversity could be explained by dissolved oxygen concentrations, chlorophyll a concentrations, bacterial abundance, and latitude. The sampling sites could be divided into three provinces based on the compositions of the ciliate communities, which exhibited a distinctly nonuniform spatial distribution pattern on a regional scale (587 km). Geographic distance, environmental conditions, and depth were identified as principal determinants of the ciliate community within the Strait. Geographic distance was the most influential factor. The effect of geographic distance seems to mainly reflect the movement of water masses that strongly constrain dispersal and contribute to environmental heterogeneity that accounts for 86.0% and 5.5%, respectively, of community variance across the Strait. Overall, this study revealed that ciliate biogeography as a function of depth and environmental gradients is linked on a regional scale to the water masses that the ciliates inhabit. This result expands our knowledge of the drivers of microeukaryote community composition across regions within which there are water mass movements and strong spatial and environmental gradients.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Biodiversidad Tipo de estudio: Prognostic_studies País/Región como asunto: Asia Idioma: En Revista: Sci Total Environ Año: 2020 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Biodiversidad Tipo de estudio: Prognostic_studies País/Región como asunto: Asia Idioma: En Revista: Sci Total Environ Año: 2020 Tipo del documento: Article Pais de publicación: Países Bajos