GCMD

Summary

Abstract: Modern molecular phylogenetics, in conjunction with sensitive mineral surface geochemical analysis, was used to determine the quantitative and qualitative distribution of micro-organism in Dry Valley soils, the key environmental factors that determine microbial distribution and what the role of micro-organism in community structure are. Several sites were sampled including Mt Erebus, the Miers ... Valley, Bratina Island and Beacon Valley. At Mt Erebus, the site was probed for soil temperatures and the areas hot spots were mapped. The temperature, pH and soil moisture was measured over three transects and the soil was sampled at intervals along each transect. A temperature logger with two probes, one at 4cm depth and the other on the surface was installed for one year. At the Miers Valley, a survey of hypoliths was conducted to gain a quantitative estimation of habitat and biomass values. Hypolith dimensions (cm2), weight of the hypolith rock (g), gross weight of the community (g), the depth of rock insertion (mm) and the depth of penetration (mm) were all recorded. Environmental data (temperature, humidity and irradiance levels) of hypoliths was also recorded with probes at the underside of the hypolith (3cm deep), the soil surface, open mineral soil (3cm) and non-translucent rock (3cm). Photographs were taken of the hypoliths and samples were collected for phylogenetic analysis, pigment spectrophotometric analysis and ATP analysis. A transect was established and soil samples were collected at intervals along the transect. An area with several (>48) seal carcases was surveyed with transects running through individual carcasses. Transects were described, sampled at intervals, pH measured, CO2 profiles determined, the relative humidity and temperature under the carcass measured, sampled for RNA analysis and microscopy and DNA samples were extracted. Other seal carcasses were sampled for carbon dating. Two experiments were set up: 1) Hypolith growth experiment to determine if soils are capable of seeding de novo hypoliths and 2) DNA longevity was determined in soil next to a hypolith sample using a clonesaver card cut into 9 bits. Soil types were also plated onto media for isolation of certain bacteria. At Bratina Island, two ponds (P70 and Orange) were sampled, and temperature and pH recorded. A short visit was made to the Beacon Valley where soils were sampled across a 25m transect for comparison. Samples (comprising DNA extracts, soil samples, mummified seal tissue samples, RNA later-stabilised soil samples, rock samples, hypolith samples and culture plates) collected from the Miers and Beacon Valleys were returned to the University of Waikato.

Related URL

Link: VIEW RELATED INFORMATION

Description: The investigators homepage

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: -78.09

S: -78.09

E: 163.81

W: 163.81

(View on interactive map)

N: -77.77

S: -77.77

E: 167.45

W: 167.45

(View on interactive map)

N: -78.02

S: -78.02

E: 165.53

W: 165.53

(View on interactive map)

N: -77.52

S: -77.52

E: 160.72

W: 160.72

(View on interactive map)

Parent DIF

This data set description is a member of a collection. The collection is described in
K023_2004_2008_NZ_1

Temporal Coverage

Start Date: 2005-01-24

Stop Date: 2005-02-05

Location Keywords

CONTINENT > ANTARCTICA

CONTINENT > ANTARCTICA > BEACON VALLEY

Science Keywords

LAND SURFACE > SOILS > MICRONUTRIENTS/TRACE ELEMENTS

LAND SURFACE > SOILS > SOIL MOISTURE/WATER CONTENT

ISO Topic Category

BIOTA

ENVIRONMENT

GEOSCIENTIFIC INFORMATION

Platform

FIELD SURVEYS

LABORATORY

Instrument

SOIL MOISTURE PROBE

SOIL SAMPLER

SOIL TEMPERATURE PROBE

Project

EOSDIS > Earth Observing System Data Information System

GTOS > Global Terrestrial Observing System

ESIP > Earth Science Information Partners Program

ESI > Environmental Sustainability Index

Quality Data sources covering fundamental components of environmental sustainability
were utilized to derive the ESI.

Access Constraints None

Use Constraints The Yale Center for Environmental Law and Policy (YCELP) holds the copyright of this dataset. Users are prohibited from any commercial sale or free redistribution without explicit written permission from YCELP. Users should acknowledge YCELP, CIESIN, and WEF as the source used in the creation of any reports, publications, new datasets, derived products, or services resulting from the use of this dataset. YCELP, CIESIN, and WEF also request reprints of any publications and notification of any redistributing efforts.

Ancillary Keywords

CIESIN > Agriculture and Food Security > Vegetation > Plant Characteristics

CIESIN > Environmental Protection > Air Quality > Chlorofluorocarbons

Data Set Progress

COMPLETE

Data Center

NSIDC Distributed Active Archive Center

Data Center URL: http://nsidc.org/daac/index.html
Dataset ID: SI-010

Data Center Personnel
Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

National Snow and Ice Data Center

Data Center URL: http://nsidc.org
Dataset ID: NSIDC-0007

Data Center Personnel
Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at nsidc.org Contact Address: National Snow and Ice Data Center CIRES, 449 UCB University of Colorado City: Boulder Province or State: CO Postal Code: 80309-0449 Country: USA

Distribution

Distribution Media: FTP

Personnel

NSIDC USER SERVICES

Role: TECHNICAL CONTACT

Phone: +1 (303) 492-6199

Fax: +1 (303) 492-2468

Email: nsidc at nsidc.org

Contact Address:

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

City: Boulder

Province or State: CO

Postal Code: 80309-0449

Country: USA

PER GLOERSEN

Role: INVESTIGATOR

Phone: (301) 614-5710

Fax: (301) 614-5644

Email: Per.Gloersen at nasa.gov

Contact Address:

Laboratory for Hydrospheric Processes

NASA/Goddard Space Flight Center

Code 614

City: Greenbelt

Province or State: MD

Postal Code: 20771

Country: USA

DONALD J. CAVALIERI

Role: INVESTIGATOR

Phone: (301) 614-5901

Fax: (301) 614-5644

Email: donald.j.cavalieri at nasa.gov

Contact Address:

Laboratory for Hydrospheric Processes

NASA/Goddard Space Flight Center

Code 614.1

City: Greenbelt

Province or State: MD

Postal Code: 20771

Country: USA

Publications/References

Carsey, F.D., ed., Microwave remote sensing of sea ice. Geophysical Monograph 68, American Geophysical Union, 1992.

Cavalieri, D.J., P. Gloersen and W.J. Campbell, Determination of sea ice parameters with the Nimbus-7 SMMR, J. Geophys. Res. 89(D4):5355-5369, 1984.

Comiso, J.C. and H.J. Zwally, Polar microwave brightness temperatures from Nimbus-7 SMMR: Time series of daily and monthly maps ...