Lake Hazen sediment chemical data from 2016-08-04 to 2016-08-08
This data on porewater chemical concentrations of NH4+, NO2-/NO3-, SO42-, TDP and Cl-, and microprobe data on O2, 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....
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Arctic Data Center
2019
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dataone:urn:uuid:2bd9a57a-e746-4594-abfa-3e4bcfd8131a 2024-06-03T18:46:33+00:00 Lake Hazen sediment chemical data from 2016-08-04 to 2016-08-08 Matti Ruuskanen Graham Colby Kyra St. Pierre Vincent St. Pierre Stéphane Aris-Brosou Alexandre Poulain Lake Hazen, Nunavut, Deep Hole [261m] sampling on the 4th of August 2016 Lake Hazen, Nunavut, 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:2bd9a57a-e746-4594-abfa-3e4bcfd8131a unknown Arctic Data Center high arctic lakes sediments Dataset 2019 dataone:urn:node:ARCTIC 2024-06-03T18:11:58Z This data on porewater chemical concentrations of NH4+, NO2-/NO3-, SO42-, TDP and Cl-, and microprobe data on O2, 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 Lake Hazen Nunavut Arctic Data Center (via DataONE) Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) 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. Pierre Stéphane Aris-Brosou Alexandre Poulain Lake Hazen sediment chemical data from 2016-08-04 to 2016-08-08 |
topic_facet |
high arctic lakes sediments |
description |
This data on porewater chemical concentrations of NH4+, NO2-/NO3-, SO42-, TDP and Cl-, and microprobe data on O2, 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. Pierre Stéphane Aris-Brosou Alexandre Poulain |
author_facet |
Matti Ruuskanen Graham Colby Kyra St. Pierre Vincent St. Pierre Stéphane Aris-Brosou Alexandre Poulain |
author_sort |
Matti Ruuskanen |
title |
Lake Hazen sediment chemical data from 2016-08-04 to 2016-08-08 |
title_short |
Lake Hazen sediment chemical data from 2016-08-04 to 2016-08-08 |
title_full |
Lake Hazen sediment chemical data from 2016-08-04 to 2016-08-08 |
title_fullStr |
Lake Hazen sediment chemical data from 2016-08-04 to 2016-08-08 |
title_full_unstemmed |
Lake Hazen sediment chemical data from 2016-08-04 to 2016-08-08 |
title_sort |
lake hazen sediment chemical data from 2016-08-04 to 2016-08-08 |
publisher |
Arctic Data Center |
publishDate |
2019 |
url |
https://search.dataone.org/view/urn:uuid:2bd9a57a-e746-4594-abfa-3e4bcfd8131a |
op_coverage |
Lake Hazen, Nunavut, Deep Hole [261m] sampling on the 4th of August 2016 Lake Hazen, Nunavut, 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 Lake Hazen Nunavut Snowgoose Bay |
geographic_facet |
Arctic Arctic Lake Lake Hazen Nunavut Snowgoose Bay |
genre |
Arctic Lake Hazen Nunavut |
genre_facet |
Arctic Lake Hazen Nunavut |
_version_ |
1800867782117556224 |