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Spatial patterns in shallow-water crinoid communities in the central and northern Great Barrier Reef

Created 24/06/2017

Updated 09/10/2017

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Shallow-water crinoid communities of the Central Great Barrier Reef were investigated. 1114 crinoid specimens were collected from 46 sites (24 sites on 12 reefs, 2 sites per reef, and 22 sites at Davies Reef). 43 comatuloid crinoid species from 21 genera and 6 families were identified. 1689 symbionts from the 1114 crinoids were assigned to 46 taxa from 5 invertebrate classes (see separate record).

Site locations were classified as nearshore (Green Island), mid-shelf reefs (Davies, Flora, John Brewer, Lodestone, Marx, Rib, Startle), and outer-shelf reefs (Michaelmas Cay, Noggin, Potter, Ribbon No.7, Wardle). Reefs were categorised as either previously infested by Acanthaster planci allowing or as unaffected reefs.

Habitat features recorded were: substrate composition, surface complexity, current strength, amount of benthic sediment, and slope angle. R= reef front (windward), B=back reef (leeward), S=sides either northern or southern (flank aspects of the outer slope), L=lagoon (inside).

Living posture (Cryptic = less than 20% of the arms visible; Protected = at least the central disc of the animal hidden Free-sitting = centro-dorsal disc visible but animal protected from at least one side; Exposed = animal visible from all directions, generally perched on top of the substrate); minimum and maximum arm length (to nearest cm); and colour were recorded for each specimen. Crinoid nocturnicity was noted.

Species abundance and species richness were recorded and Cramer values applied.

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Title Spatial patterns in shallow-water crinoid communities in the central and northern Great Barrier Reef
Language English
Licence Other
Landing Page https://devweb.dga.links.com.au/data/dataset/7160a7a1-75d1-4322-b3f9-bf83d2264b91
Contact Point
Australian Institute of Marine Science
adc@aims.gov.au
Geospatial Coverage {"type": "Polygon", "coordinates": [[[145.45, -18.83], [147.65, -18.83], [147.65, -15.15], [145.45, -15.15], [145.45, -18.83]]]}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Spatial patterns in shallow-water crinoid communities in the central and northern Great Barrier Reef". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/spatial-patterns-in-shallow-water-crinoid-communities-in-the-central-and-northern-great-barrier

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No duplicate datasets found.