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The use of GIS mapping techniques to assess changes in vegetation at Cape Hallett
Entry ID: K024_2003_2004_NZ_1


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Summary
Abstract: A detailed vegetation map of a 120m by 28m study site was published by Rudolph (1963). A paper copy of the original maps of this research was obtained from archives at the University of Ohio.The map was digitised into a GIS layer and converted to meters. In the field, the plot was found because some of the marking pegs were still present on site and aerial photographs were used to locate points. GPS was used to determine the real world coordinates of the plot location. The site was remapped using a one metre square grid and change analysis undertaken using a GIS. Rudolph's map classifies the cover of mosses, lichens and algae into four classes: Heavy (40-90%), Patch (10-40%), Scattered (less than 10%) and none (0%). The combination of these classes was used to describe the vegetation in 2004. Within each one metre square the percentage cover of mosses, lichens and algae were recorded. The x,y distance of the cell centre from the north west corner of the plot was also recorded together with a description of the surface rock, wetness and percentage under snow. Vegetation change was able to be compared between 1962 and 2004. The changes in relation to the physical characteristics of the surface of the plot, such as rock type, wetness and slope were analysed. The data was converted to a Dbase file and then imported to a GIS point layer using the xy location as the geographical coordinates. The vegetation was also described using relevee measurements to determine cover of vegetation. The grid was 20 x 10 cm (200 point relevee) and analysed to determine species association. The 2004 map was compared with the 1962 map with statistics generated that describe the change.
Geographic Coverage
 N: -72.3167 S: -72.3167  E: 170.2667  W: 170.2667

Temporal Coverage
Start Date: 2004-01-20
Stop Date: 2004-02-03


Location Keywords
CONTINENT > ANTARCTICA
CONTINENT > ANTARCTICA > CAPE HALLETT
GEOGRAPHIC REGION > POLAR


Science Keywords
BIOSPHERE >VEGETATION >VEGETATION COVER    [Definition]
BIOSPHERE >VEGETATION >VEGETATION SPECIES    [Definition]


ISO Topic Category
BIOTA
IMAGERY/BASE MAPS/EARTH COVER


Platform
FIELD SURVEYS    [Information]
GROUND STATIONS    [Information]
GROUND-BASED OBSERVATIONS    [Information]


Instrument
GPS >Global Positioning System    [Information]


Project
LGP >Latitudinal Gradient Project    [Information]
EBA >Evolution and Biodiversity in the Antarctic    [Information]


Quality
The study is reported in the publications. All data is held by the investigators. Please contact for more information.


Data Set Progress
COMPLETE


Originating Center


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
T G ALLAN GREEN
Role: INVESTIGATOR
Phone: +64 7 838 4225
Fax: +64 7 838 4324
Email: greentga at waikato.ac.nz
Contact Address:
Department of Biological Sciences
University of Waikato
PO Box 3105
City: Hamilton
Country: NEW ZEALAND


LARS BRABYN
Role: INVESTIGATOR
Phone: +64 7 838 4466 ext. 8429
Fax: +64 7 838 4636
Email: larsb at waikato.ac.nz
Contact Address:
Department of Geography, Tourism and Environmental Management
University of Waikato
PO BOX 3105
City: Hamilton
Postal Code: 3105
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
Brabyn, L. Green, T.G.A. Beard, C. Seppelt, R. GIS goes nano: Vegetation studies in Victoria Land, Antarctica. New Zealand geographer 61(2): 139-147, 2005.

Creation and Review Dates
DIF Creation Date: 2009-04-23
Last DIF Revision Date: 2009-04-23


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