RT info:eu-repo/semantics/article
T1 Morphology and distribution of nongeniculate coralline algae (Corallinaceae, Rhodophyta) on the leaves of the seagrass Cymodocea nodosa (Cymodoceaceae).
A1 Afonso Carrillo, Julio
A1 Reyes, Javier
A2 BotánicaEcología y Fisiología Vegetal
A2 Botánica Marina
AB Four species of non geniculate coralline algae (Corallinaceae, Rhodophyta) were identified on leaves of the seagrass Cymodocea nodosa (Ucria) Ascherson: three Fosliella states of Hydrolithon Foslie and one species of Pneophyllum KOtzing. Thespecies were identified by the morphology of the spore germination disc, the position of the trichocytes and the morphologyof the ventral filaments, trichocyte fields, and sporangial and gametangial conceptacles. The distribution of the epiphyteswas examined in terms of density, cover and fertility along the old leaves and during a whole annual cycle from a sublittoralmeadow at El Medano, Tenerife, Canary Islands. Marked seasonal variations were recorded in density, cover and fertility.In spring density, cover and fertility were low, increasing during summer and reaching maximal peaks in late summer; inautumn cover and fertility decreased but high density persisted; in winter low cover and low fertility were detected, togetherwith high density values. The density of coralline epiphytes along the leaves also showed seasonal variations. Densityincreased from proximal (younger) to distal (older) segments of the leaf in winter, decreased in summer and was relativelyconstartt in spring and autumn. The percentage cover increased at all seasons, from proximal to distal segments. Althoughsterile planfs were more abundant than fertile ones, the fertility always increased from proximal to distal segments.
YR 1995
FD 1995
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DS Repositorio institucional de la Universidad de La Laguna
RD 27-dic-2024