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https://hdl.handle.net/2440/1670
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Type: | Journal article |
Title: | Variations in the configuration of algae in subtidal forests: Implications for invertebrate assemblages |
Author: | Goodsell, P. Fowler-Walker, M. Gillanders, B. Connell, S. |
Citation: | Austral Ecology: a journal of ecology in the Southern Hemisphere, 2004; 29(3):350-357 |
Publisher: | Blackwell Science Asia |
Issue Date: | 2004 |
ISSN: | 1442-9985 1442-9993 |
Statement of Responsibility: | P. J. Goodsell, M. J. Fowler-Walker, B. M. Gillanders and S. D. Connell |
Abstract: | The ecology of Australia's most extensive canopy-forming alga, Ecklonia radiata, is often studied with little regard as to whether it occurs in monospecific stands or as part of a mixed assemblage of canopy-forming algae. We tested the hypothesis that E. radiata does not primarily occur as monospecific stands, rather it occurs more often in stands of mixed algae. At a 1-m2 scale we recognized three main configurations within forests of algae (hereafter called stands): E. radiata that occurs as (i) monospecific stands; (ii) clumps (four or more individuals together) surrounded by species of Fucales; or (iii) individual plants (or clusters of fewer than three plants) interspersed among species of Fucales. All three types of stand occurred in similar proportions (percentage cover) across two regions of Australia's southern coastline (Western and South Australia). We also tested the hypothesis that these three types of stands (identified at 1 m2) contain different assemblages of invertebrates associated with the holdfast of E. radiata. Assemblages of invertebrates varied between monospecific and interspersed stands, but not between monospecific and clumped stands. These results suggest that variation in the configuration of subtidal algae (stands measured at a 1-m2 scale) has the potential to influence the composition and abundance of associated biota. We suggest that although studies in stands of monospecific E. radiata may provide useful information for the majority of forests containing E. radiata (monospecific and clumped stands made up 65% of forests sampled), caution must be used when extrapolating to stands of mixed, interspersed algae (>31% of forests sampled). |
Description: | The definitive version may be found at www.wiley.com |
DOI: | 10.1111/j.1442-9993.2004.01372.x |
Published version: | http://dx.doi.org/10.1111/j.1442-9993.2004.01372.x |
Appears in Collections: | Aurora harvest 6 Earth and Environmental Sciences publications Environment Institute Leaders publications |
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