Aproximación al análisis fitosociológico de la flora algal del subestrato de Cystoseira mediterranea Sauv., en el litoral valenciano (España, Mediterráneo)

Se analiza fitosociológicamente la flora que coloniza el subestrato de (Sys/oseira mediterranea Sauv. en la costa valenciana. Los resultados concuerdan, en líneas generales, con los obíenidos en otros puntos del Mediterráneo occidental, destacando la abundancia de especies fotófilas y de amplia valencia ecológica.A phytosociological studv of the flora that grows under the canopy of (ysíoseira mediterranea Sauv. in the Levantine coast of Spain (Mediterranean) is made. The results are in agreement with other ones from other sites of Western Me diterranean basin. The infralittoral photophilous species are the more conspicuous group

Estudio fenológico de la vegetación marina de la Isla de Mallorca

Tesis Univ. Complutense de Madrid, 1983.Fac. de Ciencias BiológicasTRUEProQuestpu

Intraindividual Variation in Nuclear DNA Content in Durvillaea Antarctica (Chamisso) Hariot, Macrocystis pyrifera (Linnaeus) C. Agardh and Lessonia spicata (Suhr) Santelices (Phaeophyceae)

Macrocystis C. Agardh, Durvillaea Bory and Lessonia Bory are three brown seaweeds genera of commercial importance for Chilean fishermen. Macrocystis pyrifera (Linnaeus) C. Agardh (Laminariales, Laminariaceae) is one of the world's most ecologically and economically important seaweed collected in Chile for alginate extraction; and as food for abalone aquaculture, Lessonia spicata (Suhr) Santelices (Laminariales, Lessoniaceae) represents more than 70% of the total brown seaweeds annual landing in Chile; and Durvillaea antarctica (Chamisso) Hariot (Fucales, Durvillaeaceae) is consumed as food, being considered very healthy because of its iodine content. Despite the economic importance of these species their nuclear DNA content is unknown until this moment. The present research was initiated to determine the nuclear DNA content and the intraindividual ploidy level variation in these seaweeds. The DNA-localizing fluorochrome DAPI (4',6-diamidino-2-phenylindole) and red blood cell (chicken erythrocyte) standard were used to estimate the nuclear DNA contents by image analysis. Durvillaea antarctica presented lower 2C DNA (1.2 pg) content and narrower range of DNA contents (1C-2C) than the Laminariales, which showed higher 2C DNA contents (1.4 -1.5 pg) and a wider range of ploidy level, achieving up to 4C in L. spicata and up to 8C in M. pyrifera. This higher ploidy levels observed would be related with the more complex cortical organization in the Laminariales than D. antarctica. 1C nuclei were only found in mature antheridia (D. antarctica) and sporangia (M. pyrifera and L. spicata). The 2C values observed for the taxa assessed were in the range of other previously published Fucales and Laminariales

Addicions a la flora algològica del Principat de Catalunya

In a sandy-bed near Arenys de Mar (Barcelona, Spain) some algal species were collected, using scuba-diving techniques, at 25-32 m depth. Three of them were for the first time found in the catalan coast: Halymenia latifolia Crouan & Crouan, Halymenia floresia (Clemente) C. Agardh var. pinnata Codomier and Carpomitra costata (Stackhouse) Batters var. mediterranea Feldmann

Aportación al estudio fenológico de las algas de la Isla de Mallorca

Abstract not availabl

Distribution maps of marine algae from the Iberian Peninsula and the Balearic Islands. XXVIII. "Dasya" ("Ceramiales", "Rhodophyta").

Se presentan los mapas de distribución en la Península Ibérica y las islas Baleares de las especies del género Dasya, correspondientes a D. baillouviana, D. corymbifera, D. hutchinsiae, D. ocellata, D. rigescens, D. rigidula y D. sessilis.The distribution maps of the species of Dasya found along the coasts of the Iberian Peninsula and the Balearic Islands, D. baillouviana, D. corymbifera, D. hutchinsiae, D. ocellata, D. rigescens, D. rigidula and D. sessilis, are shown

Catálogo de las macroalgas bénticas marinas de Argelia, parte II: Ulvophyceae

The seaweed diversity of the Mediterranean is still not completely known, especially in some areas of its African coasts. As an effort to complete a more detailed catalogue to fill such gap, an updated checklist of seaweeds from Algeria, based on updated literature records, is developed using as starting point the checklist of Perret-Boudouresque and Seridi published in 1989. In the present work, in which we include the Ulvophyceae Mattox & K.D.Stewart, we list 73 accepted taxa from this group, among which there are 8 new records for Algeria.The seaweed diversity of the Mediterranean is still not completely known, especially in some areas of its African coasts. As an effort to complete a more detailed catalogue to fill such gap, an updated checklist of seaweeds from Algeria, based on updated literature records, is developed using as starting point the checklist of Perret-Boudouresque and Seridi published in 1989. In the present work, in which we include the Ulvophyceae Mattox & K.D.Stewart, we list 73 accepted taxa from this group, among which there are 8 new records for Algeria

Phenological and molecular studies on the introduced seaweed Dictyota cyanoloma (Dictyotales, Phaeophyceae) along the Mediterranean coast of the Iberian Peninsula

Dictyota cyanoloma, a distinctive brown algal species characterized by a blue-iridescent margin, was recently reported as an introduced species in the Mediterranean Sea but little is known about its distribution dynamics, morphological plasticity and genetic structure. In this integrative study, we evaluate its past and present occurrence along the Mediterranean Iberian coast, assess the species' phenology in Palamos (Girona, Spain) and analyze the haplotype diversity by sequencing 49 individuals from nine sampling sites for different chloroplast and mitochondrial DNA regions. Although D. cyanoloma currently occurs along all the Mediterranean Iberian coasts (in 19 of 36 localities sampled, mostly in marinas and harbour environments), we were not able to find any herbarium material of this species (at BCN-Phyc and MA) predating the year 1987. In Palamos, D. cyanoloma is present all through the year, with a maximum development in winter and a minimum in summer. Fertile specimens are absent during summer (July and August). Sporophytes are dominant from January to June and gametophytes were found only in February, March and June. Information about the antheridia, which has never been described before, is provided. Two chloroplast and three mitochondrial haplotypes were observed, indicating that multiple introductions of D. cyanoloma occurred in the study area. Additionally, the genetic structure suggests that spread did not occur through simple advancing wave fronts but by several longdistance dispersal events. Further studies employing microsatellite markers could potentially offer a better resolution to unravel expansion and colonisation dynamics of D. cyanoloma in the Mediterranean Sea

Checklist of the benthic marine macroalgae from Algeria, part II: Ulvophyceae

The seaweed diversity of the Mediterranean is still not completely known, especially in some areas of its African coasts. As an effort to complete a more detailed catalogue to fill such gap, an updated checklist of seaweeds from Algeria, based on updated literature records, is developed using as starting point the checklist of Perret-Boudouresque and Seridi published in 1989. In the present work, in which we include the Ulvophyceae Mattox & K.D.Stewart, we list 73 accepted taxa from this group, among which there are 8 new records for Algeria