Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments
Abstract In Arctic catchments, bacterioplankton are dispersed through soils and streams, both of which freeze and thaw/flow in phase, seasonally. To characterize this dispersal and its potential impact on biogeochemistry, we collected bacterioplankton and measured stream physicochemistry during snow...
Published in: | Environmental Microbiology |
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crwiley:10.1111/1462-2920.16259 2024-06-02T08:01:44+00:00 Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments Lee, Raymond M. Griffin, Natasha Jones, Erin Abbott, Benjamin W. Frei, Rebecca J. Bratsman, Samuel Proteau, Mary Errigo, Isabella M. Shogren, Arial Bowden, William B. Zarnetske, Jay P. Aanderud, Zachary T. National Science Foundation 2022 http://dx.doi.org/10.1111/1462-2920.16259 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.16259 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.16259 https://sfamjournals.onlinelibrary.wiley.com/doi/am-pdf/10.1111/1462-2920.16259 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 24, issue 12, page 5690-5706 ISSN 1462-2912 1462-2920 journal-article 2022 crwiley https://doi.org/10.1111/1462-2920.16259 2024-05-03T10:46:24Z Abstract In Arctic catchments, bacterioplankton are dispersed through soils and streams, both of which freeze and thaw/flow in phase, seasonally. To characterize this dispersal and its potential impact on biogeochemistry, we collected bacterioplankton and measured stream physicochemistry during snowmelt and after vegetation senescence across multiple stream orders in alpine, tundra, and tundra‐dominated‐by‐lakes catchments. In all catchments, differences in community composition were associated with seasonal thaw, then attachment status (i.e. free floating or sediment associated), and then stream order. Bacterioplankton taxonomic diversity and richness were elevated in sediment‐associated fractions and in higher‐order reaches during snowmelt. Families Chthonomonadaceae , Pyrinomonadaceae , and Xiphinematobacteraceae were abundantly different across seasons, while Flavobacteriaceae and Microscillaceae were abundantly different between free‐floating and sediment‐associated fractions. Physicochemical data suggested there was high iron (Fe + ) production (alpine catchment); Fe + production and chloride (Cl − ) removal (tundra catchment); and phosphorus (SRP) removal and ammonium (NH 4 + ) production (lake catchment). In tundra landscapes, these ‘hot spots’ of Fe + production and Cl − removal accompanied shifts in species richness, while SRP promoted the antecedent community. Our findings suggest that freshet increases bacterial dispersal from headwater catchments to receiving catchments, where bacterioplankton‐mineral relations stabilized communities in free‐flowing reaches, but bacterioplankton‐nutrient relations stabilized those punctuated by lakes. Article in Journal/Newspaper Arctic Tundra Wiley Online Library Arctic Environmental Microbiology 24 12 5690 5706 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract In Arctic catchments, bacterioplankton are dispersed through soils and streams, both of which freeze and thaw/flow in phase, seasonally. To characterize this dispersal and its potential impact on biogeochemistry, we collected bacterioplankton and measured stream physicochemistry during snowmelt and after vegetation senescence across multiple stream orders in alpine, tundra, and tundra‐dominated‐by‐lakes catchments. In all catchments, differences in community composition were associated with seasonal thaw, then attachment status (i.e. free floating or sediment associated), and then stream order. Bacterioplankton taxonomic diversity and richness were elevated in sediment‐associated fractions and in higher‐order reaches during snowmelt. Families Chthonomonadaceae , Pyrinomonadaceae , and Xiphinematobacteraceae were abundantly different across seasons, while Flavobacteriaceae and Microscillaceae were abundantly different between free‐floating and sediment‐associated fractions. Physicochemical data suggested there was high iron (Fe + ) production (alpine catchment); Fe + production and chloride (Cl − ) removal (tundra catchment); and phosphorus (SRP) removal and ammonium (NH 4 + ) production (lake catchment). In tundra landscapes, these ‘hot spots’ of Fe + production and Cl − removal accompanied shifts in species richness, while SRP promoted the antecedent community. Our findings suggest that freshet increases bacterial dispersal from headwater catchments to receiving catchments, where bacterioplankton‐mineral relations stabilized communities in free‐flowing reaches, but bacterioplankton‐nutrient relations stabilized those punctuated by lakes. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Lee, Raymond M. Griffin, Natasha Jones, Erin Abbott, Benjamin W. Frei, Rebecca J. Bratsman, Samuel Proteau, Mary Errigo, Isabella M. Shogren, Arial Bowden, William B. Zarnetske, Jay P. Aanderud, Zachary T. |
spellingShingle |
Lee, Raymond M. Griffin, Natasha Jones, Erin Abbott, Benjamin W. Frei, Rebecca J. Bratsman, Samuel Proteau, Mary Errigo, Isabella M. Shogren, Arial Bowden, William B. Zarnetske, Jay P. Aanderud, Zachary T. Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments |
author_facet |
Lee, Raymond M. Griffin, Natasha Jones, Erin Abbott, Benjamin W. Frei, Rebecca J. Bratsman, Samuel Proteau, Mary Errigo, Isabella M. Shogren, Arial Bowden, William B. Zarnetske, Jay P. Aanderud, Zachary T. |
author_sort |
Lee, Raymond M. |
title |
Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments |
title_short |
Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments |
title_full |
Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments |
title_fullStr |
Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments |
title_full_unstemmed |
Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments |
title_sort |
bacterioplankton dispersal and biogeochemical function across alaskan arctic catchments |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/1462-2920.16259 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.16259 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.16259 https://sfamjournals.onlinelibrary.wiley.com/doi/am-pdf/10.1111/1462-2920.16259 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra |
genre_facet |
Arctic Tundra |
op_source |
Environmental Microbiology volume 24, issue 12, page 5690-5706 ISSN 1462-2912 1462-2920 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1462-2920.16259 |
container_title |
Environmental Microbiology |
container_volume |
24 |
container_issue |
12 |
container_start_page |
5690 |
op_container_end_page |
5706 |
_version_ |
1800746129301700608 |