Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/13638
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Modern bryozoan assemblages and distribution on the Lacepede Shelf, southern Australian margin
Author: Hageman, S.
Bone, Y.
McGowran, B.
James, N.
Citation: Australian Journal of Earth Sciences, 1995; 42(6):571-580
Publisher: Blackwell Scientific
Issue Date: 1995
ISSN: 0812-0099
1440-0952
Abstract: Modem and relict sediments on the cool-water Lacepede Shelf are dominated by fragments of bryozoans, molluscs and foraminifers. This study evaluates the distribution of modem bryozoan sediment on the Lacepede Shelf based on 88 species from 16 localities using cluster analysis and principal component analysis. Six bryozoan faunal assemblages, corresponding roughly to physiographic position on the shelf, are recognized objectively. Assemblages are robust and generally defined by the changing diversity and relative abundance of the bryozoan fauna across the shelf. Slope assemblages can be differentiated from shelf assemblages based on presence or absence of a few key species. Lateral variation along the three transects is associated with: (i) differences in shelf geometry (shelf width, depth of shelf edge and angle of the slope); (ii) previous influx of continental sediments; and possibly (iii) presence of upwelling and long-shelf currents. Data were also evaluated to determine the level of detail required to provide the optimal information, with the most efficiency, from diverse bryozoan faunas. Presence- absence data for species prove nearly as effective in determining bryozoan assemblage distributions as analyses that incorporate taphonomic and abundance information. In addition, similar distribution patterns were observed using as few as 12 key species. The distribution of bryozoan species provides additional insight into the composition of carbonate skeletal particles on the Lacepede Shelf and the ecology of the diverse bryozoan fauna. These data are contributing to our understanding of the development of cool-water carbonates. © 1995 Taylor & Francis Group, LLC.
DOI: 10.1080/08120099508728226
Appears in Collections:Aurora harvest 7
Geology & Geophysics publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.