Associations of forest-type with morphology of Ecklonia radiata and abundance of understorey algae
This study tested for ecological differences between monospecific and mixed-species stands of subtidal canopy-forming algae. At three sites on the northern shore of St Francis Island, South Australia, we determined the proportional cover of four configurations of canopy-forming algae: (i) monospecif...
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/2010 2023-05-15T16:18:09+02:00 Associations of forest-type with morphology of Ecklonia radiata and abundance of understorey algae Irving, A. Fowler-Walker, M. Connell, S. 2003 http://hdl.handle.net/2440/2010 en eng Royal Soc South Australia Inc Transactions of the Royal Society of South Australia, 2003; 127(2):167-175 0372-1426 0085-5812 http://hdl.handle.net/2440/2010 Connell, S. [0000-0002-5350-6852] Journal article 2003 ftunivadelaidedl 2023-02-05T19:39:15Z This study tested for ecological differences between monospecific and mixed-species stands of subtidal canopy-forming algae. At three sites on the northern shore of St Francis Island, South Australia, we determined the proportional cover of four configurations of canopy-forming algae: (i) monospecific stands of Ecklonia radiata; (ii) E. radiata clumps (≥4 individuals) surrounded by species of Fucales (e.g. Cystophora spp. and Sargassum spp.); (iii) individual E. radiata plants (or clumps of <3 plants) interspersed among fucoid species; and (iv) fucoid-dominated stands. Mixed E. radiata-fucoid and fucoid dominated stands formed the most extensive types of canopy, comprising >94% of forests sampled at all three sites. Using this information, we then tested whether the morphology of E. radiata plants and structure of understorey floral assemblages differed between monospecific E. radiata stands and stands of individual E. radiata plants interspersed among fucoids. The morphology of E. radiata showed no substantial differences between monospecific and mixed stands. The structure of understorey assemblages differed substantially among monospecific, mixed and open habitats (reef without canopy-forming algae). These results suggest that while the morphology of mature E. radiata is not strongly influenced by forest composition, it is likely that understorey algae are strongly affected by the composition and relative covers of species in the overlying canopy. Irving, A., Fowler-Walker, M. J. and Connell, S. Article in Journal/Newspaper Francis Island The University of Adelaide: Digital Library |
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The University of Adelaide: Digital Library |
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ftunivadelaidedl |
language |
English |
description |
This study tested for ecological differences between monospecific and mixed-species stands of subtidal canopy-forming algae. At three sites on the northern shore of St Francis Island, South Australia, we determined the proportional cover of four configurations of canopy-forming algae: (i) monospecific stands of Ecklonia radiata; (ii) E. radiata clumps (≥4 individuals) surrounded by species of Fucales (e.g. Cystophora spp. and Sargassum spp.); (iii) individual E. radiata plants (or clumps of <3 plants) interspersed among fucoid species; and (iv) fucoid-dominated stands. Mixed E. radiata-fucoid and fucoid dominated stands formed the most extensive types of canopy, comprising >94% of forests sampled at all three sites. Using this information, we then tested whether the morphology of E. radiata plants and structure of understorey floral assemblages differed between monospecific E. radiata stands and stands of individual E. radiata plants interspersed among fucoids. The morphology of E. radiata showed no substantial differences between monospecific and mixed stands. The structure of understorey assemblages differed substantially among monospecific, mixed and open habitats (reef without canopy-forming algae). These results suggest that while the morphology of mature E. radiata is not strongly influenced by forest composition, it is likely that understorey algae are strongly affected by the composition and relative covers of species in the overlying canopy. Irving, A., Fowler-Walker, M. J. and Connell, S. |
format |
Article in Journal/Newspaper |
author |
Irving, A. Fowler-Walker, M. Connell, S. |
spellingShingle |
Irving, A. Fowler-Walker, M. Connell, S. Associations of forest-type with morphology of Ecklonia radiata and abundance of understorey algae |
author_facet |
Irving, A. Fowler-Walker, M. Connell, S. |
author_sort |
Irving, A. |
title |
Associations of forest-type with morphology of Ecklonia radiata and abundance of understorey algae |
title_short |
Associations of forest-type with morphology of Ecklonia radiata and abundance of understorey algae |
title_full |
Associations of forest-type with morphology of Ecklonia radiata and abundance of understorey algae |
title_fullStr |
Associations of forest-type with morphology of Ecklonia radiata and abundance of understorey algae |
title_full_unstemmed |
Associations of forest-type with morphology of Ecklonia radiata and abundance of understorey algae |
title_sort |
associations of forest-type with morphology of ecklonia radiata and abundance of understorey algae |
publisher |
Royal Soc South Australia Inc |
publishDate |
2003 |
url |
http://hdl.handle.net/2440/2010 |
genre |
Francis Island |
genre_facet |
Francis Island |
op_relation |
Transactions of the Royal Society of South Australia, 2003; 127(2):167-175 0372-1426 0085-5812 http://hdl.handle.net/2440/2010 Connell, S. [0000-0002-5350-6852] |
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1766004279441620992 |