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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Main Authors: Matti Ruuskanen, Graham Colby, Kyra St. Pierre, Vincent St. Pierre, Stéphane Aris-Brosou, Alexandre Poulain
Format: Dataset
Language:unknown
Published: Arctic Data Center 2019
Subjects:
Online Access:https://search.dataone.org/view/urn:uuid:2bd9a57a-e746-4594-abfa-3e4bcfd8131a
id dataone:urn:uuid:2bd9a57a-e746-4594-abfa-3e4bcfd8131a
record_format openpolar
spelling 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
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