English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/57163
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:

Mesograzers in Posidonia oceanica meadows: an update of data on gastropod-epiphyte-seagrass interactions

AuthorsGacia, Esperança ; Costalago, D. ; Prado, Patricia ; Piorno, Diana ; Tomàs, Fiona
KeywordsPosidonia oceanica
Stable isotopes
Issue Date2009
PublisherWalter de Gruyter
CitationBotanica Marina 52 : 439-447 (2009)
AbstractInformation on dietary habits of mesograzers in Posidonia oceanica seagrass meadows is scarce and restricted to a few species. Here we provide data on the most likely food sources for eight gastropod species inferred from stable isotope data. We observed very similar isotopic signals for all species regardless of trophic guild category, indicating similar consumption behaviour with a main diet contribution from epiphytes. We also review the state of knowledge on gastropod-epiphyte-seagrass interactions, with particular emphasis on the scarcity of studies derived from Mediterranean systems. Laboratory experiments showed that under moderately nutrient-enriched conditions, two species of gastropods (Bittium reticulatum and Jujubinus striatus) were controlling epiphyte biomass at high grazer densities, with no consequences for seagrass performance. Finally, the results of a long-term in situ fertilisation experiment showed that the δ15N signal for seagrass, epiphytes and gastropods reflects experimentally induced eutrophication, thus cascading up nutrient effects throughout the food web.
Description9 páginas, 5 tablas, 7 figuras.
Publisher version (URL)http://dx.doi.org/10.1515/BOT.2009.054
Appears in Collections:(CEAB) Artículos
(IMEDEA) Artículos
(ICM) Artículos
Files in This Item:
File Description SizeFormat 
bot.2009.054.pdf232,72 kBAdobe PDFThumbnail
Show full item record

Related articles:

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