Data/hora: 05/06/2024 08:46:10

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Are epiphytes a significant component of intertidal Zostera noltii beds?
Autores: | Lebreton, Benoit; Richard, Pierre; Radenac, Gilles; Bordes, Monique; Breret, Martine; Arnaud, Christophe; Mornet, Francoise; Blanchard, Gerard F.
Data: | 2009-08
Ano: | 2009
Palavras-chave: | SEM; Cocconeis spp.; Epiphyte diatom; Microphytobenthos; Zostera noltii; Intertidal seagrass bed; Primary producer.
Resumo: | The role of epiphytes in an intertidal Zostera noltii seagrass bed in Marennes-Oleron Bay was assessed in comparison with the other main benthic primary producers (Z. noltii, microphytobenthos) at two bathymetric levels and on a seasonal basis. Assemblage and biomass of epiphytes were studied using scanning electron microscopy (SEM). Z noltii and its detrital matter followed a typical seasonal pattern: microphytobenthos was present in large quantities throughout the year representing 21% of the total biomass while detrital matter, above-ground parts and below-ground parts accounted for 65, 9 and 5%, respectively. Only two species of epiphytic diatoms, Cocconeis scutellum and Cocconeis placentula, were observed on seagrass leaves. Epiphyte biomass was very low, representing on average less than 0.001% of that of microphytobenthos or leaves. This low epiphyte biomass is linked with the absence of macroalgae and also with the low biovolume of Cocconeis, which formed a monolayer of cells on leaves. This can be explained by the severe conditions of the intertidal and the high leaf turn-over of Z. noltii leaves. (C) 2009 Elsevier B.V. All rights reserved.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2009/publication-6589.pdf

DOI:10.1016/j.aquabot.2009.03.003

Editor: | Elsevier
Relação: | http://archimer.ifremer.fr/doc/00000/6589/
Formato: | application/pdf
Fonte: | Aquatic Botany (0304-3770) (Elsevier), 2009-08 , Vol. 91 , N. 2 , P. 82-90
Fonte: | 2009 Elsevier B.V. All rights reserved.