Natural spatial subsidies in continental Antarctic soil
Entry ID: K052_2001_2005_NZ_1

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Summary
Abstract: The soils of the McMurdo Dry Valleys are hypothesized to rely on external sources of nutrients (carbon, nitrogen, etc). The importance of these spatial subsidies on productivity and biological diversity of dry valley soils was investigated over several seasons in the Garwood Valley. Sampling of the soil, microbial mats and foam from each identified landform and from Lake Colleen was undertaken for analysis of a variety of soil biological and chemical properties in order to gain an idea of the general spatial variation of these properties (before experimental work) and to determine the size of the soil microbial communities, the rates of microbial respiration and the abundance of selected invertebrate groups. Soil samples were collected and analysed to quantify carbon and nitrogen pools, potential decomposition and nitrogen release under optimal conditions and potential microbial use of a variety of test C and N substrates. The importance of spatial subsidy materials on the four different landforms was tested with the addition of lakeshore foam and algal mats at two levels of application, plus appropriate treatment controls. Pre-treatment soil samples were taken for a variety of chemical analysis to establish baseline parameters. After subsidy applications, field measurements were made of the short -term changes (over the first six days after treatment application) in in-situ microbial activity and the composition of gases being released into the atmosphere. After six days, a second set of soil samples were collected for post treatment measurements of soil community composition and diversity, potential microbial activity and decomposer processes. Soil samples were again taken 2 years later for medium term respiratory processes but also for laboratory controlled replicate experiment for in-situ confirmation of initial nitrogen limitation and later carbon limitation. Studies were in the 01/02, 02/03 and 04/05 seasons in the Garwood Valley.

Related URL
Link: VIEW PROJECT HOME PAGE
Description: The Antarctic Dry Valley soils project


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Geographic Coverage
 N: -78.0167 S: -78.05  E: 163.9667  W: 163.8334

Temporal Coverage
Start Date: 2002-01-09
Stop Date: 2002-01-19

Start Date: 2003-01-16
Stop Date: 2003-01-30

Start Date: 2005-01-22
Stop Date: 2005-01-28

Start Date: 2006-01-10
Stop Date: 2006-01-21


Location Keywords
CONTINENT > ANTARCTICA
CONTINENT > ANTARCTICA > GARWOOD VALLEY
GEOGRAPHIC REGION > POLAR


Science Keywords
AGRICULTURE >SOILS >CARBON    [Definition]
AGRICULTURE >SOILS >DENITRIFICATION RATE    [Definition]
AGRICULTURE >SOILS >NITROGEN    [Definition]
AGRICULTURE >SOILS >ORGANIC MATTER    [Definition]
AGRICULTURE >SOILS >SOIL FERTILITY    [Definition]
AGRICULTURE >SOILS >SOIL GAS/AIR    [Definition]
AGRICULTURE >SOILS >SOIL MOISTURE/WATER CONTENT    [Definition]
AGRICULTURE >SOILS >SOIL RESPIRATION    [Definition]
AGRICULTURE >SOILS >SOIL TEMPERATURE    [Definition]
AGRICULTURE >SOILS >MICROFLORA    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >BIODIVERSITY FUNCTIONS    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >BIOGEOCHEMICAL CYCLES    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >NUTRIENT CYCLING    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >PHOTOSYNTHESIS    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >DECOMPOSITION    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >BIOMASS DYNAMICS    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >PRIMARY PRODUCTION    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >ECOSYSTEM FUNCTIONS >RESPIRATION RATE    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >COMMUNITY STRUCTURE    [Definition]


ISO Topic Category
BIOTA


Platform
FIELD SURVEYS    [Information]
LABORATORY    [Information]
FIELD INVESTIGATION    [Information]


Instrument
SOIL SAMPLER    [Information]
AUTOANALYZER    [Information]
CHN ANALYZERS >Carbon, Hydrogen, Nitrogen Analyzers    [Information]


Quality
This is an ongoing investigation. The soil samples are held at the Scottish Crop Research Institute, Dundee, Scotland. Please contact Professor David Hopkins for more details. The data is archived with Associate Professor Ashley Sparrow, Professor David Hopkins and Dr Ed Gregorich. Please contact them for more information or please refer to the publications.


Data Set Progress
COMPLETE


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: SHULAMIT GORDON
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Personnel
ASHLEY SPARROW
Role: INVESTIGATOR
Phone: +01 775 784 1107
Fax: +01 775 784 4583
Email: asparrow at cabnr.unr.edu
Contact Address:
Natural Resources and Environmental Science
University of Nevada, Reno
Mail Stop 186
1000 Valley Road
City: Reno
Province or State: Nevada
Postal Code: 89512
Country: USA


BO ELBERLING
Role: INVESTIGATOR
Phone: +45 3532 2520
Fax: +45 3532 2501
Email: be at geogr.ku.dk
Contact Address:
Institute of Geography
University of Copenhagen
Øster Voldgade 10
City: Copenhagen
Postal Code: DK-1350
Country: Denmark


ED GREGORICH
Role: INVESTIGATOR
Phone: +1-613-759-1909
Fax: +1-613-759-6566
Email: GREGORICHE at agr.gc.ca
Contact Address:
Eastern Cereal & Oilseed Research Centre (ECORC)
Agriculture Canada
Central Experimental Farm
City: Ottawa
Province or State: Ontario
Postal Code: K1A 0C6
Country: Canada


DAVID HOPKINS
Role: INVESTIGATOR
Phone: +44-1786-467851
Fax: +44-1786-467843
Email: d.w.hopkins at stir.ac.uk
Contact Address:
Department of Environmental Science
University of Stirling
City: Stirling
Postal Code: FK9 4LA
Country: Scotland


PHIL NOVIS
Role: INVESTIGATOR
Phone: +64 3 325 6701 x2511
Fax: +64 3 325 2418
Email: novisp at landcareresearch.co.nz
Contact Address:
Landcare Research
PO BOX 69
City: Lincoln
Postal Code: 8152
Country: New Zealand


DAVID WARDLE
Role: INVESTIGATOR
Phone: +64-3-325 6701 extn 2511
Fax: +64-3-325-2418
Email: wardled at LandcareResearch.co.nz
Contact Address:
Landcare Research
PO BOX 69
City: Lincoln
Postal Code: 8152
Country: New Zealand


LAURIE GREENFIELD
Role: INVESTIGATOR
Phone: +64 3 364 2797
Fax: +64 3 364 2590
Contact Address:
School of Biological Sciences
University of Canterbury
Private Bag 4800
City: Christchurch
Country: New Zealand


CEISHA POIROT
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: c.poirot at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


SHULAMIT GORDON
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Publications/References
PAPERS
Hopkins D.W., Sparrow, A.D., Gregorich, E.G., Elberling, B., Novis, P., Fraser, F., Scrimgeour, C., Dennis, P.G.. Meier-Augenstein W. & Greenfield, L.G. 2009. Isotopic evidence for the provenance and turnover of organic carbon by soil microorganisms in the Antarctic dry valleys. Environmental Microbiology, doi:10.1111/j.1462-2920.2008.01830.x

Hopkins, D.W., Sparrow, A.D., Shillam, L.L., English, L.C., Dennis, P.G., Novis, P., Elberling, B., Gregorich, E.G. & Greenfield, L.G. 2008. Enzymatic activities and microbial communities in an Antarctic dry valley soil: Responses to C and N supplementation. Soil Biology and Biochemistry, 40: 2130-2136.

Hopkins, D.W., Sparrow, A.D., Gregorich, E.G., Novis, P., Elberling, B. & Greenfield, L.G. 2008. Redistributed lacustrine detritus as a spatial subsidy of biological resources for soils in an Antarctic dry valley. Geoderma, 144: 86-92.

Novis, P.M., Whitehead, D., Gregorich, E.G., Hunt, J.E., Sparrow, A.D., Hopkins, D.W., Elberling, B., & Greenfield, L.G. 2007. Annual carbon fixation in terrestrial populations of Nostoc commune (Cyanobacteria) from an Antarctic dry valley is driven by temperature regime. Global Change Biology 13: 1224-1237.

Hopkins, D.W., Sparrow, A.D., Novis, P.M., Gregorich, E.G., Elberling, B. & Greenfield, L.G. 2006. Controls on the distribution of productivity and organic resources in Antarctic dry valley soils. Proceedings of the Royal Society Series B: Biological Sciences 273: 2687-2695. [Invited review]

Elberling, B., Gregorich, E.G., Hopkins, D.W., Sparrow, A.D., Novis, P., & Greenfield, L.G. 2006. Distribution and dynamics of soil organic matter in an Antarctic dry valley. Soil Biology and Biochemistry 38: 3095-3106.

Gregorich, E.G., Hopkins, D.W., Elberling, B., Novis, P., Sparrow, A.D., Greenfield, L.G. & Rochette, P. 2006. Biogenic gas emission from lakeshore soils in an Antarctic dry valley. Soil Biology and Biochemistry 38: 3120-3129.

Hopkins, D.W., Sparrow, A.D., Elberling, B., Gregorich, E.G., Novis, P., Greenfield, L.G., & Tilston, E.L.. 2006. Carbon, nitrogen and temperature controls on microbial activity in soils from an Antarctic dry valley. Soil Biology and Biochemistry 38: 3130-3140.

BOOK CHAPTERS
Hopkins, D.W., Elberling, B., Greenfield, L.G., Gregorich, E.G., Novis, P., O’Donnell, A.G. & Sparrow, A.D. 2005. Soil micro-organisms in Antarctic dry valleys: resource supply and utilization. In: G.M. Gadd, K.T. Semple & H.M. Lappin-Scott (eds). SGM Symposium 65: Micro-organisms and Earth Systems – Advances in Geomicrobiology. Cambridge University Press, Cambridge. pp.71-84.

CONFERENCE PRESENTATIONS
Hopkins, D., Sparrow, A., et al. 2008. Biogeochemical transformations and responses to change of soils organisms in Antarctic dry valleys. Joint Scientific Committee on Antarctic Research (SCAR)/International Arctic Science Committee (IASC) International Polar Year Conference, St Petersburg, Russia, 8-11 July, 2008.

Novis, P., Smissen, R., Sparrow, A., Whitehead, D., Hunt, J., Gregorich, E., Hopkins, D., Elberling, B., Broady, P., & Greenfield, L. 2007. Nostoc commune in Victoria Land. Antarctica New Zealand Latitudinal Gradient Workshop, Wellington, NZ, 2 July 2007.

Elberling, B., Gregorich E.G., Hopkins D.W., Sparrow A.D., Novis P. & Greenfield L.G. 2007. Controls on soil organic matter decomposition in an Antarctic dry valley. International Symposium on Soil Processes Under Extreme Meteorological Conditions. Bayreuth, Germany, 25-28 February 2007.

Hopkins, D.W., Sparrow, A.D., Gregorich, E.G., Elberling, B., Greenfield, L.G. & Novis, P. 2006. Controls on biological activity in soils from Antarctic dry valleys. 18th World Congress of Soil Science. Philadelphia, USA, 9-16 July 2006.

Sparrow, A., Elberling, B., Greenfield, L., Gregorich, E., Hopkins, D., Novis, P. & Wardle, D. 2005. Antarctic dry valley soil organic matter and microbial communities: within-valley heterogeneity of composition and function. Ecological Society of America Annual Conference, Montreal, 8-12 August, 2005.

Hopkins, D., Greenfield, L., Wardle, D., Novis, P., Sparrow, A., Gregorich, E., Elberling, B., O’Donnell,T., & English, L. 2005. Resources and diversity. Synthesis of Soil Biodiversity and Ecosystem Functioning in Victoria Land, Antarctica: An NSF-Sponsored Workshop. Jekyll Island, USA, 21-23 April, 2005.

Creation and Review Dates
DIF Creation Date: 2009-04-16
Last DIF Revision Date: 2009-05-01

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