The effects of contemporary selection and dispersal limitation on the community assembly of acidophilic microalgae

The effects of contemporary selection and dispersal limitation on the community assembly of acidophilic microalgae

© 2018 Phycological Society of America.

Bibliographische Detailangaben
Veröffentlicht in:Journal of phycology. - 1966. - 54(2018), 5 vom: 28. Okt., Seite 720-733
1. Verfasser: Hsieh, Chia-Jung (VerfasserIn)
Weitere Verfasser: Zhan, Shing Hei, Liao, Chen-Pan, Tang, Sen-Lin, Wang, Liang-Chi, Watanabe, Tsuyoshi, Geraldino, Paul John L, Liu, Shao-Lun
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Journal of phycology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't acidophilic microalgae community assembly contemporary selection dispersal limitation pyrosequencing rbcL DNA, Algal
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520 |a Extremophilic microalgae are primary producers in acidic habitats, such as volcanic sites and acid mine drainages, and play a central role in biogeochemical cycles. Yet, basic knowledge about their species composition and community assembly is lacking. Here, we begin to fill this knowledge gap by performing the first large-scale survey of microalgal diversity in acidic geothermal sites across the West Pacific Island Chain. We collected 72 environmental samples in 12 geothermal sites, measured temperature and pH, and performed rbcL amplicon-based 454 pyrosequencing. Using these data, we estimated the diversity of microalgal species, and then examined the relative contribution of contemporary selection (i.e., local environmental variables) and dispersal limitation on the assembly of these communities. A species delimitation analysis uncovered seven major microalgae (four red, two green, and one diatom) and higher species diversity than previously appreciated. A distance-based redundancy analysis with variation partitioning revealed that dispersal limitation has a greater influence on the community assembly of microalgae than contemporary selection. Consistent with this finding, community similarity among the sampled sites decayed more quickly over geographical distance than differences in environmental factors. Our work paves the way for future studies to understand the ecology and biogeography of microalgae in extreme habitats 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a acidophilic microalgae 
650 4 |a community assembly 
650 4 |a contemporary selection 
650 4 |a dispersal limitation 
650 4 |a pyrosequencing 
650 4 |a rbcL 
650 7 |a DNA, Algal  |2 NLM 
700 1 |a Zhan, Shing Hei  |e verfasserin  |4 aut 
700 1 |a Liao, Chen-Pan  |e verfasserin  |4 aut 
700 1 |a Tang, Sen-Lin  |e verfasserin  |4 aut 
700 1 |a Wang, Liang-Chi  |e verfasserin  |4 aut 
700 1 |a Watanabe, Tsuyoshi  |e verfasserin  |4 aut 
700 1 |a Geraldino, Paul John L  |e verfasserin  |4 aut 
700 1 |a Liu, Shao-Lun  |e verfasserin  |4 aut 
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