All scientific data collected by the Australian Antarctic program (AAp) are eventually described in the Catalogue of Australian Antarctic and Subantarctic Metadata (CAASM). CAASM can be used to search through AAp data descriptions, and it also provides links to access publicly available datasets, which can either be immediately downloaded or obtained from the Australian Antarctic Data Centre (AADC).
This dataset consists of Hyperion satellite imagery, as well as GPS ground truthing of vegetation quadrats.
The aims of this project were:
1. to produce a spectral library of the major subantarctic terrestrial plant species and community types from ground spectroradiometery measurements .
2. to use the spectral library to assist in classification of vegetation communities.
File: 2392HI2003_04 Vegetation Survey Data.xls
Table of vegetation data collected from Heard Island in the summer of 2003-2004 by Johanna Turnbull. Areas surveyed were Paddick Valley, Fairchild Beach, Dovers Moraine and Skua Beach. Ten 1x1 m quadrats were sampled with each 30x30 m site surveyed. Quadrats were selected haphazardly. Numbers are given as percentage cover of each species, averaged out over the ten sampled quadrats, unless otherwise stated.
The Codes used for species/ground cover types and vegetation communities/associations can be found in sheet 2 of the excel file, called 'vegetation codes'. They are also listed below:
Vegetation - Species/Ground Cover Types
Code - Species/ground cover types
AM - Acaena magellanica
AS - Azorella selago
CA - Callitriche
CA w/ H2O - Callitriche in water
CO - Colobanthus sp.
DE - Deschampsia
G - Gravel
L - Lichen
LI - Liverwort
M - Moss/Bryophytes
MO - Montia fontana
PA - Pringlea antiscorbutica
PAN - Poa annua
PC - Poa cookii
PK - Poa kuerguelensis
PK/PC - P. kerguelensis / P. cookii Hybrid
R - rock
S - sand / soil
W - Water
Vegetation - Communities / Associations
Code - Community
DCC - Closed Cushionfield
DCC w/ Aceana - Closed Cushionfield with Aceana
DCC/H - Closed Cushionfield/Herbfield
DCC/H/T - Cushionfield/Herbfield/Tussock
FF - Fellfield
H - Herbfield
MF - Mossfield
PC/M - Pool Complex/Meadow
PCC - Open Cushionfield
PCC/MF - Open Cushionfield/Mossfield
SM - Mire/Flush/Meadow
SM/PCC - Mire/Flush/Open Cushionfield
THD - Tussock with Cushionfield/Herbfield
Attempts were also made to collect imagery of Macquarie Island during same the month but all 3 attempts encountered 99% plus cloud cover over the island. The image of Heard Island has about 40% cloud cover, and substantial amounts of ice and snow cover many areas of vegetation normally visible in the summer months.
These data are publicly available for download from the provided URL.
This data set conforms to the CCBY Attribution License
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2388_alb_foraging when using these data.