Sediment chemical data, Lake Hazen, Nunavut, Canada, August 4th to 8th, 2016
This data on porewater chemical concentrations of NH 4 + , NO 2 - /NO 3 - , SO 4 2- , TDP and Cl - , and microprobe data on O 2 , redox potential, and pH in the sediments of Lake Hazen in August 2016 was gathered for a metagenomic study on the structure and functional potential of the sediment micro...
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dataone:urn:uuid:0e0b7bd7-def7-4c05-b290-f156119b0524 2024-10-03T18:45:47+00:00 Sediment chemical data, Lake Hazen, Nunavut, Canada, August 4th to 8th, 2016 Matti Ruuskanen Graham Colby Kyra St. Pierre Vincent St. Louis Stéphane Aris-Brosou Alexandre Poulain Lake Hazen, Nunavut, Canada, Deep Hole [261m] sampling on the 4th of August 2016 Lake Hazen, Nunavut, Canada, Snowgoose Bay [49m] sampling on the 8th of August 2016 ENVELOPE(-70.71619,-70.71619,81.82452,81.82452) BEGINDATE: 2016-08-04T00:00:00Z ENDDATE: 2016-08-08T00:00:00Z 2019-01-01T00:00:00Z https://search.dataone.org/view/urn:uuid:0e0b7bd7-def7-4c05-b290-f156119b0524 unknown Arctic Data Center high arctic lakes sediments Dataset 2019 dataone:urn:node:ARCTIC 2024-10-03T18:12:02Z This data on porewater chemical concentrations of NH 4 + , NO 2 - /NO 3 - , SO 4 2- , TDP and Cl - , and microprobe data on O 2 , redox potential, and pH in the sediments of Lake Hazen in August 2016 was gathered for a metagenomic study on the structure and functional potential of the sediment microbial community. The title of the study is "High-Arctic lake sediments are enriched in novel Metagenome Assembled Genomes fit for low temperature and oligotrophy". Abstract of the study follows: The Arctic is currently warming at an unprecedented rate, which may affect environmental constraints on the freshwater microbial communities found there. Yet, our knowledge of the community structure and function of High Arctic freshwater microbes remains poor, even though they play key roles in nutrient cycling and other ecosystem services. Here, using high-throughput metagenomic sequencing and genome assembly, we show that sediment microbial communities in the High Arctic’s largest lake by volume, Lake Hazen, are highly diverse and contain novel organisms. These assembled genomes displayed a high prevalence of pathways involved in lipid chemistry, and a low prevalence of nutrient uptake pathways, which might represent adaptations to the specific, extremely oligotrophic conditions in Lake Hazen. A third of the reconstructed genomes were distantly related to known reference genomes, and analysis of marker genes indicated that these novel genomes play key roles in fixing atmospheric nitrogen and assimilating it into organic forms. Furthermore, we observed that the nitrogen and sulfur cycles are catalyzed by a diverse microbial community in these sediments. Increasing nutrient delivery from melting glaciers might lead to disappearance of oligotrophic niches in the sediment and alterations in the microbial community, which might have unforeseen consequences on water quality in northern regions. Dataset Arctic glacier* Lake Hazen Nunavut Arctic Data Center (via DataONE) Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Canada Lake Hazen ENVELOPE(-71.017,-71.017,81.797,81.797) Nunavut Snowgoose Bay ENVELOPE(-71.523,-71.523,66.569,66.569) ENVELOPE(-70.71619,-70.71619,81.82452,81.82452) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
high arctic lakes sediments |
spellingShingle |
high arctic lakes sediments Matti Ruuskanen Graham Colby Kyra St. Pierre Vincent St. Louis Stéphane Aris-Brosou Alexandre Poulain Sediment chemical data, Lake Hazen, Nunavut, Canada, August 4th to 8th, 2016 |
topic_facet |
high arctic lakes sediments |
description |
This data on porewater chemical concentrations of NH 4 + , NO 2 - /NO 3 - , SO 4 2- , TDP and Cl - , and microprobe data on O 2 , redox potential, and pH in the sediments of Lake Hazen in August 2016 was gathered for a metagenomic study on the structure and functional potential of the sediment microbial community. The title of the study is "High-Arctic lake sediments are enriched in novel Metagenome Assembled Genomes fit for low temperature and oligotrophy". Abstract of the study follows: The Arctic is currently warming at an unprecedented rate, which may affect environmental constraints on the freshwater microbial communities found there. Yet, our knowledge of the community structure and function of High Arctic freshwater microbes remains poor, even though they play key roles in nutrient cycling and other ecosystem services. Here, using high-throughput metagenomic sequencing and genome assembly, we show that sediment microbial communities in the High Arctic’s largest lake by volume, Lake Hazen, are highly diverse and contain novel organisms. These assembled genomes displayed a high prevalence of pathways involved in lipid chemistry, and a low prevalence of nutrient uptake pathways, which might represent adaptations to the specific, extremely oligotrophic conditions in Lake Hazen. A third of the reconstructed genomes were distantly related to known reference genomes, and analysis of marker genes indicated that these novel genomes play key roles in fixing atmospheric nitrogen and assimilating it into organic forms. Furthermore, we observed that the nitrogen and sulfur cycles are catalyzed by a diverse microbial community in these sediments. Increasing nutrient delivery from melting glaciers might lead to disappearance of oligotrophic niches in the sediment and alterations in the microbial community, which might have unforeseen consequences on water quality in northern regions. |
format |
Dataset |
author |
Matti Ruuskanen Graham Colby Kyra St. Pierre Vincent St. Louis Stéphane Aris-Brosou Alexandre Poulain |
author_facet |
Matti Ruuskanen Graham Colby Kyra St. Pierre Vincent St. Louis Stéphane Aris-Brosou Alexandre Poulain |
author_sort |
Matti Ruuskanen |
title |
Sediment chemical data, Lake Hazen, Nunavut, Canada, August 4th to 8th, 2016 |
title_short |
Sediment chemical data, Lake Hazen, Nunavut, Canada, August 4th to 8th, 2016 |
title_full |
Sediment chemical data, Lake Hazen, Nunavut, Canada, August 4th to 8th, 2016 |
title_fullStr |
Sediment chemical data, Lake Hazen, Nunavut, Canada, August 4th to 8th, 2016 |
title_full_unstemmed |
Sediment chemical data, Lake Hazen, Nunavut, Canada, August 4th to 8th, 2016 |
title_sort |
sediment chemical data, lake hazen, nunavut, canada, august 4th to 8th, 2016 |
publisher |
Arctic Data Center |
publishDate |
2019 |
url |
https://search.dataone.org/view/urn:uuid:0e0b7bd7-def7-4c05-b290-f156119b0524 |
op_coverage |
Lake Hazen, Nunavut, Canada, Deep Hole [261m] sampling on the 4th of August 2016 Lake Hazen, Nunavut, Canada, Snowgoose Bay [49m] sampling on the 8th of August 2016 ENVELOPE(-70.71619,-70.71619,81.82452,81.82452) BEGINDATE: 2016-08-04T00:00:00Z ENDDATE: 2016-08-08T00:00:00Z |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(-71.017,-71.017,81.797,81.797) ENVELOPE(-71.523,-71.523,66.569,66.569) ENVELOPE(-70.71619,-70.71619,81.82452,81.82452) |
geographic |
Arctic Arctic Lake Canada Lake Hazen Nunavut Snowgoose Bay |
geographic_facet |
Arctic Arctic Lake Canada Lake Hazen Nunavut Snowgoose Bay |
genre |
Arctic glacier* Lake Hazen Nunavut |
genre_facet |
Arctic glacier* Lake Hazen Nunavut |
_version_ |
1811920627507920896 |