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Delineation of simple microecosystems associated with the quartz stone habitat in the Vestfold Hills

Entry ID: ASAC_992

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Summary

Abstract: Quartz stone sublithic microbial communities and underlying soil, retrieved from the Vestfold Hills were investigated using a variety of traditional and molecular methods. Although direct epifluorescent counts of the sublithic biota averaged 1.1 x 109 cells g-1 dry weight and underlying soil, 0.5 x 109 cells g-1 dry weight, viable counts were on average 3-orders of magnitude higher in sublithic ... samples cf. underlying soil. Enrichment and molecular analyses revealed the predominant cyanobacteria were non-halophilic, able to grow optimally at 15-20 degrees C, and were related to the Phormidium subgroup with several distinct morphotypess and phylotypes present. Sublithic heterotrophic bacterial populations and those of underlying soils included mostly psychrotolerant taxa typical of Antarctic soil. However, psychrophilic and halophilic bacteria, mostly members of the alpha subdivision of the Proteobacteria and the order Cytophagales, were abundant in the sublithic growth (20-40% of the viable count and about 50% of isolated individual taxa) but absent from underlying soils. It is suggested that quartz stone subliths might constitute a 'refuge' for psychrophilic bacteria.

The download file contains:
8 files:
File 1. - Sample location data". Lists quartz stones collected for analysis, indicating site location, date of sampling, description of surrounding area and indicates whether or not soil immediately adjacent to the stone was collected.
File 2. - Gross colony diversitydata quartz stone sublith". Indicates colony diversity (indicated by number of grossly different colony types on agar medium used).
File 3. - Strain information quartz stone sublith isolates". Lists strains isolates, including strain designation, stone sample origin, and basic cellular and colonial morphological characteristics.
File 4. - Temperature/salinity response data". ". Lists responses of quartz stone sublith isolates to temperature and tolerance to salinity.
File 5. - Phenotypic data". Lists detailed phenotypic data for select quartz stone sublith isolates.
File 6. - Cell population data quartz stone subliths and soil". Indicates plate count estimates obtained after use of different media (salty, non-salty, dilute, non-dilute) as well as epifluoresecent direct count data for both quartz stone subliths and for immediately adjacent soil not covered by the stone.
File 7. - Bacterial isolate 16S rRNA gene sequence data". " Sequence data for quartz stone sublith derived isolates. All sequences deposited on the GenBank (NCBI) nucleotide database. All sequences are shown in the FASTA format.
File 8. - Cloned 16S rRNA gene sequence data". Sequence data for cloned sequences obtained by direct PCR from quartz stone sublith biofilm . All sequences deposited on the GenBank (NCBI) nucleotide database. All sequences are shown in the FASTA format.

Related URL

Link: GET DATA

Description: Download point for the data

Link: VIEW PROJECT HOME PAGE

Description: Public information for ASAC project 992

Link: VIEW RELATED INFORMATION

Description: Download point for the paper

Link: VIEW RELATED INFORMATION

Description: Citation reference for this metadata record and dataset

Geographic Coverage

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Spatial coordinates

N: -68.0

S: -68.5

E: 78.5

W: 78.0

Temporal Coverage

Start Date: 1998-01-01

Stop Date: 1998-12-31

Location Keywords

CONTINENT > ANTARCTICA

GEOGRAPHIC REGION > POLAR

Science Keywords

SOLID EARTH > ROCKS/MINERALS/CRYSTALS

BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA

BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE

ISO Topic Category

BIOTA

Platform

FIELD SURVEYS

Access Constraints A PDF copy of the referenced paper is available for download from the provided URL to AAD staff only.

A copy of the dataset is available for download from the provided URL.

Use Constraints This data set conforms to the PICCCBY Attribution License
(http://creativecommons.org/licenses/by/3.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_992 when using these data.

Ancillary Keywords

CYANOBACTERIA

QUARTZ

SOIL

VESTFOLD HILLS

Data Set Progress

COMPLETE

Data Center

Australian Antarctic Data Centre, Australia

Data Center URL: http://data.aad.gov.au

Data Center Personnel
Name: DATA OFFICER AADC Phone: +61 3 6232 3244 Fax: +61 3 6232 3351 Email: metadata at aad.gov.au Contact Address: Australian Antarctic Division 203 Channel Highway City: Kingston Province or State: Tasmania Postal Code: 7050 Country: Australia

Distribution

Distribution Media: HTTP

Distribution Size: 27 KB

Distribution Format: PDF

Fees: Free

Personnel

MARTIN LINE

Role: INVESTIGATOR

Role: TECHNICAL CONTACT

Role: DIF AUTHOR

Phone: +61 3 6226 2636

Fax: +61 3 6226 2642

Email: martin.line at utas.edu.au

Contact Address:

SCHOOL OF AGRICULTURAL SCIENCE

GPO BOX 252-54

University of Tasmania

City: Hobart

Province or State: Tasmania

Postal Code: 7001

Country: Australia

Publications/References

Smith M.C., Bowman J.P., Scott F.J., Line M.A. (2000), Sublithic bacteria associated with Antarctic quartz stones, Antarctic Science, 12, 2, 177-184

Creation and Review Dates

DIF Creation Date: 2000-08-09

Last DIF Revision Date: 2011-12-19

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