Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil
Background Subarctic regions are particularly vulnerable to climate change, yet little is known about nutrient availability and biodiversity of their cave ecosystems. Such knowledge is crucial for predicting the vulnerability of these ecosystems to consequences of climate change. Thus, to improve ou...
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ftunivbergen:oai:bora.uib.no:11250/3022218 2023-05-15T17:43:33+02:00 Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil Reboleira, Ana Sofia Bodawatta, Kasun H. Ravn, Nynne M. R. Lauritzen, Stein Erik Skoglund, Rannveig Øvrevik Poulsen, Michael Michelsen, Anders Jønsson, Knud Andreas 2022 application/pdf https://hdl.handle.net/11250/3022218 https://doi.org/10.1186/s40793-022-00435-z eng eng BMC urn:issn:2524-6372 https://hdl.handle.net/11250/3022218 https://doi.org/10.1186/s40793-022-00435-z cristin:2055770 Environmental Microbiome. 2022, 17, 41. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2022 The Author(s) 41 Environmental Microbiome 17 Journal article Peer reviewed 2022 ftunivbergen https://doi.org/10.1186/s40793-022-00435-z 2023-03-14T17:44:45Z Background Subarctic regions are particularly vulnerable to climate change, yet little is known about nutrient availability and biodiversity of their cave ecosystems. Such knowledge is crucial for predicting the vulnerability of these ecosystems to consequences of climate change. Thus, to improve our understanding of life in these habitats, we characterized environmental variables, as well as bacterial and invertebrate communities of six subarctic caves in Northern Norway. Results Only a minuscule diversity of surface-adapted invertebrates were found in these caves. However, the bacterial communities in caves were compositionally different, more diverse and more complex than the nutrient-richer surface soil. Cave soil microbiomes were less variable between caves than between surface communities in the same area, suggesting that the stable cave environments with tougher conditions drive the uniform microbial communities. We also observed only a small proportion of cave bacterial genera originating from the surface, indicating unique cave-adapted microbial communities. Increased diversity within caves may stem from higher niche specialization and levels of interdependencies for nutrient cycling among bacterial taxa in these oligotrophic environments. Conclusions Taken together this suggest that environmental changes, e.g., faster melting of snow as a result of global warming that could alter nutrient influx, can have a detrimental impact on interactions and dependencies of these complex communities. This comparative exploration of cave and surface microbiomes also lays the foundation to further investigate the long-term environmental variables that shape the biodiversity of these vulnerable ecosystems. publishedVersion Article in Journal/Newspaper Northern Norway Subarctic University of Bergen: Bergen Open Research Archive (BORA-UiB) Norway Environmental Microbiome 17 1 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
Background Subarctic regions are particularly vulnerable to climate change, yet little is known about nutrient availability and biodiversity of their cave ecosystems. Such knowledge is crucial for predicting the vulnerability of these ecosystems to consequences of climate change. Thus, to improve our understanding of life in these habitats, we characterized environmental variables, as well as bacterial and invertebrate communities of six subarctic caves in Northern Norway. Results Only a minuscule diversity of surface-adapted invertebrates were found in these caves. However, the bacterial communities in caves were compositionally different, more diverse and more complex than the nutrient-richer surface soil. Cave soil microbiomes were less variable between caves than between surface communities in the same area, suggesting that the stable cave environments with tougher conditions drive the uniform microbial communities. We also observed only a small proportion of cave bacterial genera originating from the surface, indicating unique cave-adapted microbial communities. Increased diversity within caves may stem from higher niche specialization and levels of interdependencies for nutrient cycling among bacterial taxa in these oligotrophic environments. Conclusions Taken together this suggest that environmental changes, e.g., faster melting of snow as a result of global warming that could alter nutrient influx, can have a detrimental impact on interactions and dependencies of these complex communities. This comparative exploration of cave and surface microbiomes also lays the foundation to further investigate the long-term environmental variables that shape the biodiversity of these vulnerable ecosystems. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Reboleira, Ana Sofia Bodawatta, Kasun H. Ravn, Nynne M. R. Lauritzen, Stein Erik Skoglund, Rannveig Øvrevik Poulsen, Michael Michelsen, Anders Jønsson, Knud Andreas |
spellingShingle |
Reboleira, Ana Sofia Bodawatta, Kasun H. Ravn, Nynne M. R. Lauritzen, Stein Erik Skoglund, Rannveig Øvrevik Poulsen, Michael Michelsen, Anders Jønsson, Knud Andreas Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil |
author_facet |
Reboleira, Ana Sofia Bodawatta, Kasun H. Ravn, Nynne M. R. Lauritzen, Stein Erik Skoglund, Rannveig Øvrevik Poulsen, Michael Michelsen, Anders Jønsson, Knud Andreas |
author_sort |
Reboleira, Ana Sofia |
title |
Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil |
title_short |
Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil |
title_full |
Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil |
title_fullStr |
Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil |
title_full_unstemmed |
Nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil |
title_sort |
nutrient‑limited subarctic caves harbour more diverse and complex bacterial communities than their surface soil |
publisher |
BMC |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3022218 https://doi.org/10.1186/s40793-022-00435-z |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway Subarctic |
genre_facet |
Northern Norway Subarctic |
op_source |
41 Environmental Microbiome 17 |
op_relation |
urn:issn:2524-6372 https://hdl.handle.net/11250/3022218 https://doi.org/10.1186/s40793-022-00435-z cristin:2055770 Environmental Microbiome. 2022, 17, 41. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1186/s40793-022-00435-z |
container_title |
Environmental Microbiome |
container_volume |
17 |
container_issue |
1 |
_version_ |
1766145662287609856 |