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

Mapas de distribución de algas marinas de la Península Ibérica y las islas Baleares. XXVII. Halymenia (Halymeniales, Rhodophyta)

[spa] Se presentan los mapas de distribución en la Península Ibérica y las islas Baleares del género Halymenia, representado en nuestras costas por H. elongata, H. floresii y H. latifolia. [eng] The distribution maps along the Iberian Peninsula and the Balearic Islands of the genus Halymenia, represented in this geographical area by H. elongata, H. floresii and H. latifolia, are given

Mapas de distribución de algas marinas de la Península Ibérica y las islas Baleares. XXVI. Cryptonemia (Halymeniales, Rhodophyta)

[spa] Se presentan los mapas de distribución en la Península Ibérica y las islas Baleares del género Cryptonemia, representado en nuestras costas por C. lomation y C. tuniformis.[eng] The distribution maps along the Iberian Peninsula and the Balearic Islands of the genus Cryptonemia, represented in this geographical area by C. lomation and C. tuniformis, are given

Sargassum muticum (Yendo) Fensholt, nueva cita para la Peninsula Iberica

Sargassum muticum (Yendo) Fensholt, feofícea originaria de Japón (Pacífico Oeste), está extendiendo rápidamente su área de distribución, asociada a los transportes de ostras japonesas (CRITCHLEY, A. & R. DIJKEMA, Bot. Mar. 27:211-216,1984). Actualmente está citada en el Japón, en la costa Pacífica de América del Norte, en el Atlántico europeo de Inglaterra, Canal de la Mancha y Holanda y en el Mediterráneo francés (CRITCHLEY, A. J. Mar. Biol. Ass. U.K. 63: 617-625, 1983)

Nuevas citas para la flora algológica de Baleares

En el estudio que estamos llevando a cabo sobre la flora algológicade Mallorca, se han determinado dos especies nuevas para las Baleares. Son Hypnea cervicornisJ. Agardh y Galaxaura oblongata (Ellis and Solander) Lamouroux, especies típicamente tropicales.In the study that we are carrying out about the algological flora of Mallorca, two new species for the Balearic islands have been determined: they are Hypnea cervicornisJ. Agardh and Galaxaura oblongata (Ellis and Solander) Lamouroux, two tipically tropical species

Padina ditristromatica and Padina pavonicoides (Dictyotales, Phaeophyceae): two new records for the marine benthic flora of the Mediterranean Spanish coasts

Padina distristromatica Ni-Ni-Win & H. Kawai and Padina pavonicoides Ni-Ni-Win & H. Kawai, two species recently described from the Mediterranean Sea, are reported for the first time from the coasts of the Iberian Peninsula, and the former also from the Balearic Islands. In this paper new data are provided for both species, especially cell dimensions. The indusium features, which are proposed as new taxonomical character for P. distristromatica, as well as the lack of stolon-like structures in this species, are considered useful features for distinguishing P. distristromatica from P. pavonica. A distribution map of both species in the Spanish coasts is also provided

Mediterranean species of Caulerpa are polyploid with smaller genomes in the invasive ones

Caulerpa species are marine green algae, which often act as invasive species with rapid clonal proliferation when growing outside their native biogeographical borders. Despite many publications on the genetics and ecology of Caulerpa species, their life history and ploidy levels are still to be resolved and are the subject of large controversy. While some authors claimed that the thallus found in nature has a haplodiplobiontic life cycle with heteromorphic alternation of generations, other authors claimed a diploid or haploid life cycle with only one generation involved. DAPI-staining with image analysis and microspectrophotometry were used to estimate relative nuclear DNA contents in three species of Caulerpa from the Mediterranean, at individual, population and species levels. Results show that ploidy levels and genome size vary in these three Caulerpa species, with a reduction in genome size for the invasive ones. Caulerpa species in the Mediterranean are polyploids in different life history phases; all sampled C. taxifolia and C. racemosa var. cylindracea were in haplophasic phase, but in C. prolifera, the native species, individuals were found in both diplophasic and haplophasic phases. Different levels of endopolyploidy were found in both C. prolifera and C. racemosa var. cylindracea. Life history is elucidated for the Mediterranean C. prolifera and it is hypothesized that haplophasic dominance in C. racemosa var. cylindracea and C. taxifolia is a beneficial trait for their invasive strategies

Mapas de distribución de algas marinas de la Península Ibérica e Islas Baleares. VIII. Cystoseira C. Agardh y Sargassum C. Agardh

[spa] Se presentan los mapas de distribución en la Península Ibérica e Islas Baleares de varias especies del género Cystoseira C. Agardh y de una especie del género Sargassum C. Agardh.[eng] We publish here the maps of the distrihution along the Iberian Peninsula and Balearie Islands of several species of Cystoseira C. Agardh and one species of Sargassum C. Agardh

Mapas de distribución de algas marinas de la Península Ibérica e Islas Baleares. XI. Lobophora variegata (Lamour.) Womersley, Padina pavonica (L.) Thivy y Zonaria tournefortii (Lamour.) Mont. (Dictyotales, Fucophyceae)

[spa] Se presentan los mapas de distribución en la Península Ibérica e Islas Baleares de los géneros Lobophora, Padina y Zonaria pertenecientes al Orden Dictyotales. Cada uno de estos tres géneros está representado en nuestras costas por una sola especie: Lobophora variegata (Lamour.) Womersley, Padina pavonica (L.) Thivy y Zonaria tournefortii (Lamour.) Mont.[eng] We publish here the maps of the distribution along the Iberian Peninsula and the Balearic Islands of the genera Lobophora, Padina and Zonaría belonging to the Order Dictyotales. Each one of these genera are represented in this geographical area by only one species: Lobophora variegata (Lamour.) Womersley, Padina pavonica (L.) Thivy y Zonaria tournefortii (Lamour.) Mont

Mapas de distribución de algas marinas de la Península Ibérica e Islas Baleares. XVI. Dictyopteris polypodioides (DC.) Lamour. y Spatoglossum solierii (Chauv. ex Mont.) Kütz. (Dictyotales, Fucophyceae)

[spa] Se presentan los mapas de distribución en la Península Ibérica y las Islas Baleares de Dictyopteris polypodioides (DC.) Lamour. y Spatoglossum solieri (Chauv. ex Mont.) Kütz. pertenecientes al Orden Dictyotales.[eng] The maps of distribution along the Iberian Peninsula and the Balearic Islands of Dictyopteris polypodioides (DC.) Lamour. and Spatoglossum solieri (Chauv. ex Mont.) Kütz., belonging to the Order Dictyotales, are given