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Patterns of development in the epifaunal community at Portsea, Victoria.

Created 24/06/2025

Updated 24/06/2025

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This experiment examined the temporal changes in species composition and diversity of a developing epifaunal community on artificial substrata at Portsea. The substrata used were the bare uncaged panels and cage control panels used in the experiment described in the record 'Effects of predation by fishes on the establishment of the epifaunal community at Portsea, Victoria' (File Identifier: fd9aa0f0-e4c2-11dc-9b6b-00188b4c0af8). There were 4 replicate panels that were immersed for 2, 4 or 7 months on rigs under the Portsea Pier and 6 runs of the experiment from October 1975 to November 1977. At the conclusion of each run of the experiment the panels were fixed in 4% formalin-seawater solution. In the laboratory, the number of individuals and percent cover of colonial species on each panel were recorded. In general, the 3 most abundant colonists (barnacle Elminius modestus, tubicolous amphipods and the colonial ascidian Diplosoma rayneri) in the first 2 months decreased as the experiments proceeded. In the following months the surfaces were invariably dominated by arborescent bryozoans, particularly Bugula dentata and Tricellaria porteli and encrusting bryozoans, particularly Celleporaria fusca. Once arborescent bryozoans exceeded a height of 15mm they frequently escaped overgrowth by most encrusting species. In all runs of the experiment there was an initial and usually rapid increase in diversity followed by a decrease.

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Additional Info

Field Value
Title Patterns of development in the epifaunal community at Portsea, Victoria.
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/1572991b-bb4e-4f2e-9f3d-49afd1012475
Contact Point
Australian Ocean Data Network
garry.russ@jcu.edu.au
Reference Period 01/10/1975 - 01/11/1977
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    144.727,
    -38.327
  ],
  "type": "Point"
}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Patterns of development in the epifaunal community at Portsea, Victoria.". Please visit the source to access the original metadata of the dataset:
https://data.gov.au/data/dataset/patterns-of-development-in-the-epifaunal-community-at-portsea-victoria1