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Study

Study Name: Saline water eukaryotic from Lake Bonney in the McMurdo Dry Valleys, Antarctica

Projects

Biosamples

Organisms

Biosamples: 89 Seq. Projects: 89
STUDY INFORMATION
GOLD Study ID Gs0154296
Study Name Saline water eukaryotic from Lake Bonney in the McMurdo Dry Valleys, Antarctica
Other Names
NCBI Umbrella Bioproject Name
NCBI Umbrella Bioproject ID
SRA Studies
SRA Study Id ERP020508  (Link to NCBI )
Study Title Protist diversity in a permanently ice-covered Antarctic Lake during the polar night transition
Study Abstract The McMurdo Dry Valleys of Antarctica harbor numerous permanently ice-covered lakes, which provide a year-round oasis for microbial life. Microbial eukaryotes in these lakes occupy a variety of trophic levels within the simple aquatic food web ranging from primary producers to tertiary predators. Here, we report the first molecular study to describe the vertical distribution of the eukaryotic community residing in the photic zone of the east lobe (ELB) and west lobe (WLB) of the chemically stratified Lake Bonney. The 18S ribosomal RNA (rRNA) libraries revealed vertically stratified populations dominated by photosynthetic protists, with a cryptophyte dominating shallow populations (ELB-6m; WLB-10m), a haptophyte occupying mid-depths (both lobes 13m) and chlorophytes residing in the deepest layers (ELB-18 and 20m; WLB-15 and 20m) of the photic zone. A previously undetected stramenopile occurred throughout the water column of both lobes. Temporal variation in the eukaryotic populations was examined during the transition from Antarctic summer (24-h sunlight) to polar night (complete dark). Protist diversity was similar between the two lobes of Lake Bonney due to exchange between the photic zones of the two basins via a narrow bedrock sill. However, vertical and temporal variation in protist distribution occurred, indicating the influence of the unique water chemistry on the biology of the two dry valley watersheds.
  
Legacy ER Study ID
Legacy GOLD ID
Added By JGI automated process on 2021-07-28
Last Modified By
PI
Description The goal of this study is to describe the vertical distribution of the eukaryotic community residing in the photic zone of the east lobe (ELB) and west lobe (WLB) of the chemically stratified Lake Bonney
Relevance
Study Information Visibility Public
Metagenomic Study Yes
Publication
Is GEBA
Is HMP
ECOSYSTEM CLASSIFICATION
Ecosystem Environmental
Ecosystem Category Aquatic
Ecosystem Type Non-marine Saline and Alkaline
Ecosystem Subtype Lake
Specific Ecosystem Unclassified
STUDY COMPOSITION
Number of Biosamples 89
Number of Organisms 0
Number of Seq Projects 89
Number of Analysis Projects 0
Number of Related Studies 0

 

 

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