Spatial patterns of benthic biofilm diversity among streams draining proglacial floodplains
Glacier shrinkage opens new proglacial terrain with pronounced environmental gradients along longitudinal and lateral chronosequences. Despite the environmental harshness of the streams that drain glacier forelands, their benthic biofilms can harbor astonishing biodiversity spanning all domains of l...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-08-01
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| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2022.948165/full |
| _version_ | 1811345112492408832 |
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| author | Jade Brandani Hannes Peter Susheel Bhanu Busi Tyler J. Kohler Stilianos Fodelianakis Leila Ezzat Grégoire Michoud Massimo Bourquin Paraskevi Pramateftaki Matteo Roncoroni Stuart N. Lane Tom J. Battin |
| author_facet | Jade Brandani Hannes Peter Susheel Bhanu Busi Tyler J. Kohler Stilianos Fodelianakis Leila Ezzat Grégoire Michoud Massimo Bourquin Paraskevi Pramateftaki Matteo Roncoroni Stuart N. Lane Tom J. Battin |
| author_sort | Jade Brandani |
| collection | DOAJ |
| description | Glacier shrinkage opens new proglacial terrain with pronounced environmental gradients along longitudinal and lateral chronosequences. Despite the environmental harshness of the streams that drain glacier forelands, their benthic biofilms can harbor astonishing biodiversity spanning all domains of life. Here, we studied the spatial dynamics of prokaryotic and eukaryotic photoautotroph diversity within braided glacier-fed streams and tributaries draining lateral terraces predominantly fed by groundwater and snowmelt across three proglacial floodplains in the Swiss Alps. Along the lateral chronosequence, we found that benthic biofilms in tributaries develop higher biomass than those in glacier-fed streams, and that their respective diversity and community composition differed markedly. We also found spatial turnover of bacterial communities in the glacier-fed streams along the longitudinal chronosequence. These patterns along the two chronosequences seem unexpected given the close spatial proximity and connectivity of the various streams, suggesting environmental filtering as an underlying mechanism. Furthermore, our results suggest that photoautotrophic communities shape bacterial communities across the various streams, which is understandable given that algae are the major source of organic matter in proglacial streams. Overall, our findings shed new light on benthic biofilms in proglacial streams now changing at rapid pace owing to climate-induced glacier shrinkage. |
| first_indexed | 2024-04-13T19:58:10Z |
| format | Article |
| id | doaj.art-4272e2f8d307409faed4c8ff90ba89d6 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-13T19:58:10Z |
| publishDate | 2022-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-4272e2f8d307409faed4c8ff90ba89d62022-12-22T02:32:17ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-08-011310.3389/fmicb.2022.948165948165Spatial patterns of benthic biofilm diversity among streams draining proglacial floodplainsJade Brandani0Hannes Peter1Susheel Bhanu Busi2Tyler J. Kohler3Stilianos Fodelianakis4Leila Ezzat5Grégoire Michoud6Massimo Bourquin7Paraskevi Pramateftaki8Matteo Roncoroni9Stuart N. Lane10Tom J. Battin11River Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandRiver Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandSystems Ecology Group, Luxembourg Center for Systems Biomedicine, University of Luxembourg, Esch-sur-Alzette, LuxembourgRiver Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandRiver Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandRiver Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandRiver Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandRiver Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandRiver Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandInstitute of Earth Surface Dynamics (IDYST), University of Lausanne, Lausanne, SwitzerlandInstitute of Earth Surface Dynamics (IDYST), University of Lausanne, Lausanne, SwitzerlandRiver Ecosystems Laboratory, Alpine and Polar Environmental Research Center, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandGlacier shrinkage opens new proglacial terrain with pronounced environmental gradients along longitudinal and lateral chronosequences. Despite the environmental harshness of the streams that drain glacier forelands, their benthic biofilms can harbor astonishing biodiversity spanning all domains of life. Here, we studied the spatial dynamics of prokaryotic and eukaryotic photoautotroph diversity within braided glacier-fed streams and tributaries draining lateral terraces predominantly fed by groundwater and snowmelt across three proglacial floodplains in the Swiss Alps. Along the lateral chronosequence, we found that benthic biofilms in tributaries develop higher biomass than those in glacier-fed streams, and that their respective diversity and community composition differed markedly. We also found spatial turnover of bacterial communities in the glacier-fed streams along the longitudinal chronosequence. These patterns along the two chronosequences seem unexpected given the close spatial proximity and connectivity of the various streams, suggesting environmental filtering as an underlying mechanism. Furthermore, our results suggest that photoautotrophic communities shape bacterial communities across the various streams, which is understandable given that algae are the major source of organic matter in proglacial streams. Overall, our findings shed new light on benthic biofilms in proglacial streams now changing at rapid pace owing to climate-induced glacier shrinkage.https://www.frontiersin.org/articles/10.3389/fmicb.2022.948165/fullproglacial floodplainsbenthic biofilmsmicrobial diversity16S and 18S rRNA ampliconsclimate change |
| spellingShingle | Jade Brandani Hannes Peter Susheel Bhanu Busi Tyler J. Kohler Stilianos Fodelianakis Leila Ezzat Grégoire Michoud Massimo Bourquin Paraskevi Pramateftaki Matteo Roncoroni Stuart N. Lane Tom J. Battin Spatial patterns of benthic biofilm diversity among streams draining proglacial floodplains Frontiers in Microbiology proglacial floodplains benthic biofilms microbial diversity 16S and 18S rRNA amplicons climate change |
| title | Spatial patterns of benthic biofilm diversity among streams draining proglacial floodplains |
| title_full | Spatial patterns of benthic biofilm diversity among streams draining proglacial floodplains |
| title_fullStr | Spatial patterns of benthic biofilm diversity among streams draining proglacial floodplains |
| title_full_unstemmed | Spatial patterns of benthic biofilm diversity among streams draining proglacial floodplains |
| title_short | Spatial patterns of benthic biofilm diversity among streams draining proglacial floodplains |
| title_sort | spatial patterns of benthic biofilm diversity among streams draining proglacial floodplains |
| topic | proglacial floodplains benthic biofilms microbial diversity 16S and 18S rRNA amplicons climate change |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2022.948165/full |
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