Jump to ContentJump to Main Navigation
Show Summary Details
In This Section

Botanica Marina

Editor-in-Chief: Dring, Matthew

6 Issues per year

IMPACT FACTOR 2016: 1.239
5-year IMPACT FACTOR: 1.373

CiteScore 2016: 1.28

SCImago Journal Rank (SJR) 2015: 0.608
Source Normalized Impact per Paper (SNIP) 2015: 0.664

See all formats and pricing
In This Section
Volume 51, Issue 1 (Feb 2008)


Survival of sand-burial by seaweeds with crustose bases or life-history stages structures the biotic community on an intertidal rocky shore

Robert J. Anderson
  • 1Seaweed Unit, Marine and Coastal Management, Private Bag X2, Roggebaai 8012, South Africa, and Botany Department, University of Cape Town, Rondebosch, South Africa
/ Dylan R. Anderson
  • 2Department of Botany, Nelson Mandela Metropolitan University, Port Elizabeth 6031, South Africa
/ James S. Anderson
  • 327 Old Cape Farm Rd, Noordhoek 7979, South Africa
Published Online: 2008-02-05 | DOI: https://doi.org/10.1515/BOT.2008.006


Responses of a rocky intertidal community to seasonal sand-inundation were investigated on the cool-temperate west coast of South Africa by experimentally testing the hypothesis that the crustose components in certain macroalgae survive burial, enabling them to dominate the community when the shore is sand-free. Twelve 0.25×0.25 m plots served as controls in the mid-eulittoral and 12 in the upper eulittoral zone. Treatment 1 (T1) comprised a further 12 plots in each zone that were cleared of all biota (scraping, wire-brushing and burning) soon after the sand moved off in year 2. Treatment 2 (T2) comprised clearing a further 12 plots in each zone at the end of Year 2, just before sand returned, in case T1 had inadvertently removed early-settling microscopic stages. Mid-eulittoral zone controls developed similar communities each year dominated by Mazzaella capensis, Gymnogongrus complicatus, barnacles, mussels and small limpets, with smaller covers of several other macroalgae. Both treatments significantly reduced M. capensis, G. complicatus and G. glomeratus, but did not affect covers of other species. These three species persisted as crustose holdfasts, and the latter two also as crustose tetrasporophytes; the crusts probably comprise coalescent sporelings. All other species recruited annually as the sand moved off. In the upper eulittoral zone, T2 had no effect on the biota that developed, indicating that none of the species (including the dominants Porphyra capensis and Chthamalus dentatus) relied on persistent elements to survive burial. These results confirm that sand-disturbed communities comprise a mixture of opportunistic and disturbance-tolerant species, but experimentally show the importance of crustose elements for survival of these red algae.

Keywords: crusts; disturbance; Gymnogongrus; Mazzaella; sand-burial

About the article

Corresponding author

Received: 2007-02-20

Accepted: 2007-10-05

Published Online: 2008-02-05

Published in Print: 2008-02-01

Citation Information: Botanica Marina, ISSN (Online) 14374323, ISSN (Print) 00068055, DOI: https://doi.org/10.1515/BOT.2008.006. Export Citation

Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

Pilar Díaz-Tapia, Ignacio Bárbara, and Isabel Díez
Estuarine, Coastal and Shelf Science, 2013, Volume 133, Page 97
Doriane Stagnol, Michel Renaud, and Dominique Davoult
Estuarine, Coastal and Shelf Science, 2013, Volume 130, Page 99
RJ Anderson, JJ Bolton, AJ Smit, and D da Silva Neto
African Journal of Marine Science, 2012, Volume 34, Number 1, Page 1

Comments (0)

Please log in or register to comment.
Log in