Sediment chemical data, Lake Hazen, Nunavut, Canada, May 2017 - June 2017
Temperatures and precipitations in the Arctic are expected to increase dramatically over the next century, yet little is known about how microbial communities and their underlying metabolic processes will be affected by these environmental changes. To address this knowledge gap, we adopted a unique...
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dataone:doi:10.18739/A20R9M41W 2024-10-03T18:45:45+00:00 Sediment chemical data, Lake Hazen, Nunavut, Canada, May 2017 - June 2017 Graham Colby Alexandre Poulain "C" Sediment near Ruggles River (negligible runoff), Lake Hazen, Nunavut, Canada "L1" Sediment near Blister River shallow (low runoff), Lake Hazen, Nunavut, Canada "H1" Sediment near Abbe River (low runoff), Lake Hazen, Nunavut, Canada "L2" Sediment near Blister River deep (high runoff), Lake Hazen, Nunavut, Canada "H2" Sediment near Deephole (high runoff), Lake Hazen, Nunavut, Canada ENVELOPE(-70.50447,-70.50447,81.80343,81.80343) BEGINDATE: 2017-05-10T00:00:00Z ENDDATE: 2017-06-20T00:00:00Z 2019-08-17T00:00:00Z https://doi.org/10.18739/A20R9M41W unknown Arctic Data Center Lake Hazen High Arctic Microbial Ecology Climate Change Freshwater Lake Sediments Ellesmere Island Sediment Chemistry Metagenomics Dataset 2019 dataone:urn:node:ARCTIC https://doi.org/10.18739/A20R9M41W 2024-10-03T18:13:08Z Temperatures and precipitations in the Arctic are expected to increase dramatically over the next century, yet little is known about how microbial communities and their underlying metabolic processes will be affected by these environmental changes. To address this knowledge gap, we adopted a unique space-for-time design to analyse sediments sampled from Lake Hazen, Nunavut, Canada. Over the past decade, in this world’s largest high Arctic lake by volume, climate change has enhanced glacial melt, resulting in increased annual runoff from the watershed. We exploit the spatial heterogeneity created by varying runoff regimes, conducting metagenomic analyses of lake sediments along these spatial gradients to study how a transition from low to high runoff, used as a proxy for environmental change, affects microbial community structure and functional potential. Here we show that increasing runoff leads to a decrease in taxonomic and functional diversity. While our data suggest that rising Arctic temperatures will negatively impact microbial diversity and nutrient cycling in Arctic lakes, it is still unclear how these losses at the microbial community level will affect biogeochemical cycles, or whether this will lead to feedback loops of uncertain direction and magnitude. Dataset Arctic Climate change Ellesmere Island Lake Hazen Nunavut Arctic Data Center (via DataONE) Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Canada Ellesmere Island Lake Hazen ENVELOPE(-71.017,-71.017,81.797,81.797) Nunavut Ruggles River ENVELOPE(-69.294,-69.294,81.702,81.702) ENVELOPE(-70.50447,-70.50447,81.80343,81.80343) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
Lake Hazen High Arctic Microbial Ecology Climate Change Freshwater Lake Sediments Ellesmere Island Sediment Chemistry Metagenomics |
spellingShingle |
Lake Hazen High Arctic Microbial Ecology Climate Change Freshwater Lake Sediments Ellesmere Island Sediment Chemistry Metagenomics Graham Colby Alexandre Poulain Sediment chemical data, Lake Hazen, Nunavut, Canada, May 2017 - June 2017 |
topic_facet |
Lake Hazen High Arctic Microbial Ecology Climate Change Freshwater Lake Sediments Ellesmere Island Sediment Chemistry Metagenomics |
description |
Temperatures and precipitations in the Arctic are expected to increase dramatically over the next century, yet little is known about how microbial communities and their underlying metabolic processes will be affected by these environmental changes. To address this knowledge gap, we adopted a unique space-for-time design to analyse sediments sampled from Lake Hazen, Nunavut, Canada. Over the past decade, in this world’s largest high Arctic lake by volume, climate change has enhanced glacial melt, resulting in increased annual runoff from the watershed. We exploit the spatial heterogeneity created by varying runoff regimes, conducting metagenomic analyses of lake sediments along these spatial gradients to study how a transition from low to high runoff, used as a proxy for environmental change, affects microbial community structure and functional potential. Here we show that increasing runoff leads to a decrease in taxonomic and functional diversity. While our data suggest that rising Arctic temperatures will negatively impact microbial diversity and nutrient cycling in Arctic lakes, it is still unclear how these losses at the microbial community level will affect biogeochemical cycles, or whether this will lead to feedback loops of uncertain direction and magnitude. |
format |
Dataset |
author |
Graham Colby Alexandre Poulain |
author_facet |
Graham Colby Alexandre Poulain |
author_sort |
Graham Colby |
title |
Sediment chemical data, Lake Hazen, Nunavut, Canada, May 2017 - June 2017 |
title_short |
Sediment chemical data, Lake Hazen, Nunavut, Canada, May 2017 - June 2017 |
title_full |
Sediment chemical data, Lake Hazen, Nunavut, Canada, May 2017 - June 2017 |
title_fullStr |
Sediment chemical data, Lake Hazen, Nunavut, Canada, May 2017 - June 2017 |
title_full_unstemmed |
Sediment chemical data, Lake Hazen, Nunavut, Canada, May 2017 - June 2017 |
title_sort |
sediment chemical data, lake hazen, nunavut, canada, may 2017 - june 2017 |
publisher |
Arctic Data Center |
publishDate |
2019 |
url |
https://doi.org/10.18739/A20R9M41W |
op_coverage |
"C" Sediment near Ruggles River (negligible runoff), Lake Hazen, Nunavut, Canada "L1" Sediment near Blister River shallow (low runoff), Lake Hazen, Nunavut, Canada "H1" Sediment near Abbe River (low runoff), Lake Hazen, Nunavut, Canada "L2" Sediment near Blister River deep (high runoff), Lake Hazen, Nunavut, Canada "H2" Sediment near Deephole (high runoff), Lake Hazen, Nunavut, Canada ENVELOPE(-70.50447,-70.50447,81.80343,81.80343) BEGINDATE: 2017-05-10T00:00:00Z ENDDATE: 2017-06-20T00:00:00Z |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(-71.017,-71.017,81.797,81.797) ENVELOPE(-69.294,-69.294,81.702,81.702) ENVELOPE(-70.50447,-70.50447,81.80343,81.80343) |
geographic |
Arctic Arctic Lake Canada Ellesmere Island Lake Hazen Nunavut Ruggles River |
geographic_facet |
Arctic Arctic Lake Canada Ellesmere Island Lake Hazen Nunavut Ruggles River |
genre |
Arctic Climate change Ellesmere Island Lake Hazen Nunavut |
genre_facet |
Arctic Climate change Ellesmere Island Lake Hazen Nunavut |
op_doi |
https://doi.org/10.18739/A20R9M41W |
_version_ |
1811919959481122816 |