Ahnfeltiopsis, a new genus in the Phyllophoraceae (Gigartinales, Rhodophyceae)

Silva, P. C.; DeCew, Thomas C.

doi:10.2216/i0031-8884-31-6-576.1

Cited by 25 publications

(20 citation statements)

References 9 publications

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“…In agreement with other authors (Silva and DeCew, 1992;Lewis and Womersley, 1994;Masuda and Norris, 1994;Silva et al, 1996;Masuda et al, 1996;, we treat Ahnfeltiopsis and Gymnogongrus as separate entities, since in our opinion, the life history type and the manner of development of both tetrasporoblasts and cystocarps are important enough features to distinguish them. Nevertheless, in agreement with Fredericq and Ramírez (1996) and Masuda et al (1996), we hold that future studies on these taxa are required.…”

Section: Kallymenia Schizophyllasupporting

confidence: 89%

“…Moreover, Ardré (1980) remarked that S. pacifica (Kylin) Kylin and S. obovata (species with unknown tetrasporophytes) probably are the gametophytes of some of the Haematocelis species with which they coexist. In this way, DeCew et al (1992) relate H. rubens from the Pacific coast of Mexico with S. pacifica, pointing out that both gametophytes and tetrasporophytes from the Pacific coast are anatomically very similar to the Atlantic gametophytes (S. dubyi) and tetrasporophytes (H. rubens). For this reason, DeCew et al (1992) suggested the possibility that S. dubyi and S. pacifica can be conspecific.…”

Section: (Map 42)mentioning

confidence: 83%

“…Family PHYLLOPHORACEAE Nägeli (1847) Genus Ahnfeltiopsis P. Silva and DeCew (1992) Silva and DeCew (1992) created the genus Ahnfeltiopsis in order to accommodate those species previously assigned to Ahnfeltia and Gymnogongrus that produce internal cystocarps and have a life history in which erect gametophytes alternate with a crustose tetrasporophyte (Bonnemaisonia hamiferatype life history). The genus Ahnfeltia also has this type of life history but, on the contrary, the carposporophytes are external (Maggs and Pueschel, 1989).…”

Section: Kallymenia Schizophyllamentioning

confidence: 99%

“…Agardh (1849), as Gymnogongrus glomeratus, on the basis of material from the Cape of Good Hope and recently Silva and DeCew (1992) transferred it to the genus Ahnfeltiopsis. At present, the Atlantic distribution of this species is limited to the South Africa and Namibian coasts.…”

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confidence: 99%

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Marine benthic algae of Namibia

Lluch

2002

Sci. Mar.

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SUMMARY: The first comprehensive study of the marine algal flora of Namibia including descriptions and illustrations of most species is presented. The main objective of this work is to report a flora that, until now, has scarcely been studied. The work compiles all the available information on the marine benthic flora of Namibia and provides new data about it composition and biogeography, as well as detailed descriptions and remarks of most of its species. The samples on which this study is based were collected between 1986 and 1989 in the eulittoral and the upper sublittoral zones of the north half of the Namibian coast. According to the present data, the marine benthic flora of Namibia comprises 196 taxa (147 Rhodophyceae, 20 Phaeophyceae, 15 Ulvophyceae, 6 Cladophorophyceae and 8 Bryopsidophyceae), 21 of which has not been recorded from this coasts. This temperate flora is mainly characterized by a low number of species, a low proportion of Phaeophyceae and a high degree of endemism. Concerning the species number, the flora is quite poor due to both the scarce availability of colonizable substratum and the low diversity of habitats. On the other hand, the low proportion of Phaeophyceae is the reason for which the R/P and (R+C)/P ratios take disproportionately high values and so they are not useful in this geographical area. As regards the degree of endemism, the marine benthic flora of Namibia includes quite a high number of taxa endemic to southern Africa (55 taxa; 28.1% of the flora); 25 of these 55 taxa (12.8% of the flora) are endemic to the biogeographic Benguela Marine Province and only Acrosorium cincinnatum is endemic to the Namibian coasts.Key words: Namibia, marine algae, morphology and anatomy, distribution, biogeography, taxonomy, check-list. RESUMEN: ALGAS BENTÓNICAS MARINAS DE NAMIBIA. -Este trabajo recoge toda la información existente hasta el momento sobre la flora bentónica marina de Namibia y proporciona nuevos datos sobre su composición y biogeografía, además de descripciones detalladas y valoraciones críticas de muchas de sus especies. El trabajo se ha realizado a partir de muestras florísticas recolectadas entre los años 1986 y 1989 en las zonas eulitoral y sublitoral superior de la costa de la mitad norte del país, entre Walvis Bay y la desembocadura del río Kunene. Según los datos actuales, la flora bentónica marina de Namibia está representada por 196 táxones (147 Rhodophyceae, 20 Phaeophyceae, 15 Ulvophyceae, 6 Cladophorophyceae y 8 Bryopsidophyceae), 21 de los cuales no habían sido citados hasta el momento de las costas de este país. Se trata de una flora de carácter templado que se caracteriza principalmente por el bajo número de especies, la escasa proporción de feofíceas y el elevado grado de endemismo. En cuanto al número de especies, la flora de Namibia es relativamente pobre, debido a la escasa disponibilidad de substrato colonizable y a la baja diversidad de hábitats. Por otra parte, la baja proporción de feofí-ceas hace que los índices R/P y (R+C)/P adopten valores desproporc...

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Section: Kallymenia Schizophyllasupporting

confidence: 89%

Section: (Map 42)mentioning

confidence: 83%

Section: Kallymenia Schizophyllamentioning

confidence: 99%

mentioning

confidence: 99%

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Marine benthic algae of Namibia

Lluch

2002

Sci. Mar.

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“…The sequence of the floristic list follows the order proposed by Silva et al (1987) for Cyanophyta and that of Wynne (1986) for Rhodophyta, Phaeophyta and Chlorophyta. The nomenclature was updated following Silva et al (1987), Stewart (1991) and Silva and De Cew (1992).…”

Section: Methodsmentioning

confidence: 99%

Floristic study of the benthic algae of Bahia Asuncion, Baja California Sur, Mexico

Mateo‐Cid

Mendoza-González

1994

Cienc. Mar.

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Five samplings of benthic marine algae were carried out at Isla Asunción and Bahía Asunción, B.C.S., during 1988 and 1989. In total, 113 species of benthic marine algae were found. Three species of Cyanophyta, 78 species of Rhodophyta, 19 species of Phaeophyta and 13 species of Chlorophyta were determined. The floristic list includes data on the reproductive stage, tidal level, type of coast, substrate and epiphytism of the species found. Macrocystis pyrifera, Eisenia arborea and Corallina oficinalis var. chilensis are the principal components of the benthic vegetation of Asunción Island. The species composition found in Bahía Asunción is representative of the flora associated with Macrocytis pyrifera beds from the southern area of Baja California. The Rhodophyta are dominant in terms of diversity.

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