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Title

Native dispersers induce germination asynchrony in a macaronesian endemic plant (Rubia fruticosa, Rubiaceae) in xeric environments of the Canary Islands

AuthorsNogales, Manuel ; Nieves, Concepción; Illera, Juan Carlos ; Pérez Padilla, David
KeywordsRubia fruticosa
Speed of germination
Frugivorous effects
Arid habitats
Issue Date2-Jan-2006
PublisherElsevier
CitationJournal of Arid Environments 64(2): 357-363 (2006)
AbstractA comparison of the germination rate of a Macaronesian endemic plant (Rubia fruticosa) between two xeric badland areas of the easternmost islands of the Canaries (Lanzarote and Fuerteventura) is presented. A similar germination rate was observed between both seed control plants from the populations of Lanzarote and Fuerteventura in the two years. However, some germination asynchronies were observed when the native frugivores participated in this seed dispersal system; seeds from Lanzarote germinated earlier than in Fuerteventura when they were consumed by lizards and birds. Although this pattern did not present a between-year consistency, seeds germinated earlier in the more stressed badland even when climatic differences are not so great. This asynchrony, caused by frugivorous dispersers (lizards and birds), is important in geographical zones where rain is unpredictable and where it increases the probability that seedlings can recruit successfully and for a longer period.
Description7 pages, 1 figure.-- Available online Jul 18, 2005.
Publisher version (URL)http://dx.doi.org/10.1016/j.jaridenv.2005.06.002
URIhttp://hdl.handle.net/10261/13658
DOI10.1016/j.jaridenv.2005.06.002
ISSN0140-1963
Appears in Collections:(IPNA) Artículos
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