Differential GPS data collected at Heard Island 2003/04 for the Regional Sensitivity to Climate Change in Terrestrial Ecosystems (RiSCC) program
Metadata notes for RiSCC Heard Island 2003_04 season (ASAC 1015) - DGPS data and Base Station data DGPS data are described below, and associated data files listed. 1. Three Island study - Phenology and Morphology of Heard Island vascular plants. This study uses a combination of latitudinal and altit...
| Other Authors: | , , , , , |
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| Format: | Dataset |
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Australian Antarctic Data Centre
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| Online Access: | https://researchdata.ands.org.au/differential-gps-collected-riscc-program/699351 https://data.aad.gov.au/metadata/records/ASAC_1015_HIGPS03_04 http://nla.gov.au/nla.party-617536 |
| Summary: | Metadata notes for RiSCC Heard Island 2003_04 season (ASAC 1015) - DGPS data and Base Station data DGPS data are described below, and associated data files listed. 1. Three Island study - Phenology and Morphology of Heard Island vascular plants. This study uses a combination of latitudinal and altitudinal investigations to separate the effects of temperature per se and seasonality on the phenology and morphology of plants. Most latitudinal studies are confounded by covariation of seasonality and temperature, whereas with altitudinal variation at different latitudes one can disentangle these effects. The presence of the Polar Frontal Zone (APFZ), which has a major effect on seasonality, would be a key feature that would enable us to investigate this. Three islands (Marion, Kerguelen, Heard) were used in the study, each of which lies in a different place relative to the APFZ and each of which is inhabited by a similar suite of species, thus removing confounding effects of species identity in understanding responses. 1a Phenology data The collection of positional data for Heard Island Scarlet Hill Phenology was collected at each site; 4 m, 50 m, 100 m, 200 m and 250 m (ASAC 1015). At each site plants of Pringlea antiscorbutica, Acaena magellanica, Poa cookii and Azorella selago were chosen (NB at 100m and 200 m no Acaena magellanica was present, and at 250 m only Pringlea antiscorbutica was sampled) within a 50 x 50 m area, where possible, and were deemed typical of the site. Only healthy mature plants at each site were chosen. At the 4 m, 100 m and 200 m altitude levels, sites were established around AWSs (Automatic Weather Stations). Each plant was flagged and numbered. Numbered flags were removed from around/beside plants at the end of the study. The numbers of plants are represented in the GPS data. Positional data are in the form of points, lines and areas. The positional data are found in the following files. 4 m phenology PT021412A.SSF4 m phenology data, N15 Poa cookii data, Poa annua record, 50 m phenology data JDS011811A.SSFcoastal study area, AWS site and phenology site 50 m phenology JDS012314A.SSF50 m phenology (Scarlet Hill) and Stephenson camp location PT020910A.SSF50 m Azorella phenology, water meadow and Poa cookii N15 sites 100 m phenology JDS020714A.SSF200 m Phenology and 100 m AWS and phenology data JDS021313A.SSF100 m Phenology (Pringlea) PT021614A.SSF250 m and 200 m phenology data, 100m phenology 200 m phenology JDS020712A.SSF200 m Phenology site and AWS JDS020714A.SSF200 m Phenology and 100 m AWS and phenology data PT021614A.SSF250 m and 200 m phenology data, 100m phenology 250 m phenology PT021614A.SSF250 m and 200 m phenology data, 100m phenology 1b Morphology data DGPS points were only taken by JDS from Fairchild Beach morphology collection sites. JDS0104.SSFAcaena magellanica, Fairchild Beach morphology JDS010511ATR3.SSFFairchild Beach morphology 2. Positional data for the mapping of the distribution of Ranunculus crassipes The distribution of Ranunculus crassipes at Heard Island was mapped between the 14-1-2004 and 15-2-2004. This mapping was undertaken by JDS, PT and JJS. Data were collected from the Skua Beach bluffs to Sooty Valley. Positional data are in the form of points, lines and areas. Data include areas of rock water meadow. The positional data are found in the following files. PTRAN021513A.SSFRanunculus crassipes transect, points and rock water meadow JDS020816A.SSFRanunculus crassipes mapping on Skua bluffs JJS011417B.SSFRanunculus crassipes mapping on Skua bluffs PT020910A.SSF50 m Azorella phenology, water meadow and Poa cookii N15 sites This mapping of the distribution of Ranunculus crassipes together with mapping of Carex trifida and Poa litorosa on Macquarie Island described by the metadata record with ID ASAC_1015_MIGPS03 contributed to the paper: Bergstrom, D.M., Turner, P.A.M., Scott, J., Copson, G. and Shaw, J. (2006) Restricted plant species on sub-Antarctic Macquarie and Heard Islands. Polar Biology 29 532-539. 3. High altitude vascular plant points and transect data Records of high altitude plants were taken by JDS and RC. Some data from the files JDS012510A.SSF and JDS012510A_CPscarlet.ssf have not been corrected, as stated above. JDS012510A.SSFScarlet Hill high altitude transect JDS012510A_CPscarlet.ssfScarlet Hill high altitude transect - control points only for JJS JDS013111A.SSFLong Beach high altitude data and Apple location JDS020112A.SSFLong Beach high altitude data RC0302.SSFRobb Clifton control points for JJS 'and high altitude' RC0402.SSFRobb Clifton control points for JJS 'and high altitude' RC0502.SSFRobb Clifton control points for JJS 'and high altitude' Other datafiles recorded by PT, JDS and RC under ASAC 1015 include PT022012A.SSFFuel drum retaining wall, Spit Camp JDS012113A.SSFWinston Lagoon JDS012415A.SSFAcaena - 100 m south edge of Scarlet Hill JDS012914A.SSFLambeth 1 JJS Control point JDS123112A.SSFPoa annua - Dovers moraine JDSPHOTO020118A.SSFPhoto points - Dana Bergstrom data PT010621A.SSFSK25 - not sure what this data are RC0202.SSFRobb Clifton control points for JJS |
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