English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/55581
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Chemically mediated interactions between macroalgae Dictyota spp. and multiple life-history stages of the coral Porites astreoides.

AuthorsPaul, Valerie J.; Kuffner, Ilsa B.; Walters, Linda J.; Ritson-Williams, Raphael; Beach, Kevin S.; Becerro, Mikel
KeywordsChemical defense
Phase shift
Allelopathy
Coral–algal interactions
Dictyota
Issue Date2011
PublisherInter Research
CitationMarine Ecology Progress Series 426: 161–170 (2011)
AbstractCompetition between corals and macroalgae is often assumed to occur on reefs, especially those that have undergone shifts from coral to algal dominance; however, data examining these competitive interactions, especially during the early life-history stages of corals, are scarce. We conducted a series of field and outdoor seawater-table experiments to test the hypothesis that allelopathy (chemical inhibition) mediates interactions between 2 common brown macroalgae, Dictyota pulchella and D. pinnatifida, and the coral Porites astreoides at different life-history stages of the coral. D. pinnatifida significantly reduced larval survival and larval recruitment. The extracts of both D. pinnatifida and D. pulchella significantly reduced larval survival, and the extract of D. pulchella also negatively influenced larval recruitment. There was no measurable effect of the crude extracts from Dictyota spp. on the photophysiology of adult corals. Our results provide evidence that these Dictyota species chemically compete with P. astreoides by negatively affecting larval settlement and recruitment as well as the survival of larvae and new recruits. Macroalgae may perpetuate their dominance on degraded reefs by chemically inhibiting the process of coral recruitment.
Description10 páginas, 5 figuras.
Publisher version (URL)http://dx.doi.org/10.3354/meps09032
URIhttp://hdl.handle.net/10261/55581
DOI10.3354/meps09032
ISSN0171-8630
Appears in Collections:(CEAB) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.