Report on invertebrate field work, Macquarie Island, December 1986-January 1987Entry ID: Invert_MI_86-87
Abstract: From the report available for download:
A number of biologists have collected terrestrial invertebrates on Macquarie Island in previous years. Of these, K. Watson spent a year collecting intensively from various parts of the island both by hand and by extracting soil and litter samples in Tullgren funnels. He distributed the material he collected to taxonomists and published a summary of their ... findings in 1967. As a consequence, the fauna is relatively well known for a sub-antarctic island of its size. Since 1967 there have been few publications on the invertebrates; two on mites and one on Collembola. Macquarie Island speices have also been included in some general taxonomic revisions.
The Collembola, to which most attention was given during the recent field trip, are normally dominant, both in numbers of species and individuals on subantarctic islands, being outnumbered only by the Acari. They are detritivores and hence members of the decomposer suite of organisms. Since other decomposers such as myriapods, isopods, amphipods and some insect larvae are absent from Macquarie Island, the Collembola must be making a significantly larger contribution to nutrient cycling here than in less severe climates.
Field work was carried out for two months from December 7th 1986 until January 29th 1987.
The fields in this dataset are:
Organic Carbon %
Loss on ignition
(Click for Interactive Map)
Start Date: 1986-12-07Stop Date: 1987-01-29
BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ISLANDS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CHELICERATES > ARACHNIDS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS
BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS
BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > DECOMPOSITION
BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE
ISO Topic Category
Quality The main qualititative method used for collecting invertebrates was by extraction in Tullgren funnels and just over 100 samples of leaf litter, soil, moss, dung and other substrates were extracted in the six large and 10 small funnels that were taken to the island. Extraction in four Winklers and some floatation was also carried out. All these extractions were performed on the island. The ... average size of samples was 2-4 litres. Attempts were made to collect from all plant communities represented and although most samples were taken from the norhtern quarter of the island, three visits were made to field huts further south to obtain samples that were extracted at base camp. Samples from localities in the extreme south of the island were obtained from other expeditioners. Hand collections were made by beating and sweeping the vegetation and searching under stones. Some habitats sampled for the first time were interstitial meiofauna from intertidal sand, seal scats, fern litter, Acaena seed heads, deep soil and the greenhouse.
Additionally, four sites were chosen as typical of the main vegetation types on the island. These were slopes with either 1) tall tussock grassland (Poa foliosa), or 2) Stilbocarpa polaris, and plateau with either 3) herbfield or 4) fellfield with strips of moss, turf or Azorella selago. A replicate of each of these four types of land unit was selected at some distance from the original site. All eight sites were sampled quantitatively using 16 soil cores 5cms in diameter each, which were extracted until dry in banks of small Tullgren funnels. This took about 10 days. Five pitfall traps of 1.8cms in diameter filled with alcohol were run for five days on each site. Samples of litter and deep soil from and under the dominant plants were extracted non-quantitatively in large Tullgren funnels.
Access Constraints These data are available for download from the url given below. Included in the download file are a written report (containing tabulated data), as well as a text formatted excel spreadsheet.
Use Constraints This data set conforms to the PICCCBY Attribution License
Data Set Progress
Distribution Media: HTTP
Distribution Size: 19 MB
Distribution Format: pdf, csv
Role: DIF AUTHOR
Phone: +61 3 6232 3244
Fax: +61 3 6232 3351
Email: dave.connell at aad.gov.au
Australian Antarctic Division 203 Channel Highway
Province or State: Tasmania
Postal Code: 7050
Role: TECHNICAL CONTACT
Phone: +61 3 5327 6205
Email: p.greenslade at ballarat.edu.au
Centre for Environmental Management School of Science and Engineering University of Ballarat Mt Helen Campus, University Drive
City: Mt Helen
Province or State: Victoria
Postal Code: 3353
Creation and Review Dates
DIF Creation Date: 2005-02-11
Last DIF Revision Date: 2008-04-10