Six sites near a sewage outfall were sampled during austral summer in 1996 and 1997, with five replicates per site. The dataset contains a species-abundance matrix for epifauna within algal turfs, collected by the Australian Antarctic Data Centre. Analyses from this period found no significant impact from the outfall.
Use Cases
- Analyze species abundance patterns across the Site and Year columns to assess inter-annual variation in recruitment.
- Compare community structure using the Species column across sites like GCS and GBN to investigate small-scale spatial patterns related to wave exposure.
- Evaluate the impact of a point source discharge by examining data from the site 3m from the outfall against control sites.
- Model population-level responses using the species-abundance matrix to test for effects of human sewage effluent.
Strengths
- Sampling conducted at six sites with five replicates per site, providing spatial replication.
- Data collected over two consecutive years (1996 and 1997) allows for inter-annual comparison.
Limitations
- Sample size is limited to two sampling seasons and a small number of sites.
- The dataset is a basic species-abundance matrix; detailed environmental covariates or individual measurements are not provided.
- Data is temporally stale, collected over 25 years ago, which may limit relevance to current conditions.
Provenance
- Source
- Australian Antarctic Data Centre (AU_AADC)
- Collection Method
- Field sampling of epifauna within turfs of the intertidal red alga Chaetangium fastigiatum.
- Time Range
- 1996-1997
- Freshness
- null
- Geography
- Macquarie Island, specifically the isthmus area and three adjacent bays.