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).
Metadata record for data from ASAC Project 2397
See the link below for public details on this project.
---- Public Summary from Project----
Three soil animals, a land shrimp, a slater and a flat worm, were all introduced to Macquarie Island early last century. The three species were probably imported accidentally with sealers and their supplies from New Zealand. This study will investigate the origins and methods of dispersal of these animals and what factors limit their spread in order to advise on possible removal and improved quarantine risk management for the island.
From the abstract of the referenced paper:
Invasive species are a serious threat to biodiversity worldwide. The relatively simple ecological systems of the subantarctic have the potential to be significantly damaged by predatory species that invade. Two species of exotic, predatory, terrestrial flatworms were first collected in 1997 from two localitles only 2km apart, in the southeast of subantarctic Macquarie Island.
The species were later identified as Kontikia andersoni and Arthurdendyus vegrandis. We report here the results of fieldwork in 2004 that established that both species now occupy about a seventh of the southeast of the island which has a total area of only 170 square kilometres and that there seem to be no barriers to further expansion. The island was first discovered in 1810 and so it is likely the species were introduced by means of human intervention within the last 200 years. We provide evidence to show that both species originated in New Zealand and have probably been on the island for approximately 100 years giving an average rate of spread of about 10 metres per year. Other species of Arthurdendyus have been introduced from New Zealand to the United Kingdom where they prey on earthworms. The quarantine significance of A. vegrandis for Australia is discussed and recommendations made to reduce the probability of it entering Tasmania where it has the potential to become an agriculturla pest.
The fields in this dataset are:
Taken from the referenced paper:
Fieldwork was carried out on two separate occasions from the 3rd to the 19th of February 2004 and from the 27th to the 29th of February 2004, covering 11 days in total, and usually took place between 10am and 5pm. Two people worked together during both periods. Mapping began at the location of the two 1997 collections and radiated out from these sites until no individuals were found in repeated samples. In general we concentrated efforts in areas where we would have the highest probability of finding positive records, that is in areas that could retain higher moisture levels (ie along valley depressions), and then searched away from positive sites.
Site locations were recorded using a Garmin GPS (UTM zone 57). These data were downloaded using Ozi-explorer, and plotted on a map using GIS ArcView software.
NOTE - the paper from which this information was taken states that the site locations were recorded in UTM zone 85. This is the incorrect zone for Macquarie Island, which is actually in UTM zone 57 as indicated above.
An excel spreadsheet (in csv format) and a pdf copy of the referenced paper are available for download from the provided URLs. The referenced paper is only available for download by AAD staff.
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2397 when using these data.