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| Registros recuperados: 11 | |
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| Wolff, W.J.; Stegenga, H.. |
| INTRODUCTION AND METHODS During an investigation of distribution and ecology of the Archiannelida of the estuarine area of the rivers Rhine, Meuse and Scheldt in the southwestern part of The Netherlands, three species of polychaetes new to the Dutch fauna were found. Because these species have not been reported very frequently from other localities, the finds are described in some detail. The first two species were found in samples taken with a o.i m2 Van Veengrab; the last one originated from a core sample taken in the beach. After collecting the samples have been treated in the way described by Boaden (1963). RESULTS AND DISCUSSION Hesionura augeneri (Friedrich, 1937) (fig. 2) This species was found at two localities in the coastal water (fig. 1) at... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/317203 |
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| Stegenga, H.. |
| Eleven species of Ceramiaceae are reported from the coast of the eastern Cape Province, South Africa, for the first time; five of these also represent new records for southern Africa as a whole. New details on reproductive morphology of Anotrichium furcellatum, Callithamniella capensis, Griffithsia subbiconica and Laurenciophila minima are presented. A key to the East Cape species of Callithamnion is provided. |
| Tipo: Article / Letter to the editor |
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| Ano: 1988 |
URL: http://www.repository.naturalis.nl/record/524670 |
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| Stegenga, H.; Vroman, M.. |
| Nine species of benthic marine algae are reported from the Caribbean island of Curaçao for the first time: Chlorophyta: Derbesia marina and Trichosolen longipedicellata; Phaeophyta: Ectocarpus rhodochortonoides, Feldmannia elachistaeformis, Hecatonema floridanum, Herponema tortugense and Sphacelaria novae-hollandiae; •; Rhodophyta: Polysiphonia scopulorum and Polysiphonia sphaerocarpa. The Curaçao algal flora, with at present about 350 species recorded with reasonable certainty, equals some of the richest known areas in the Caribbean. |
| Tipo: Article / Letter to the editor |
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| Ano: 1988 |
URL: http://www.repository.naturalis.nl/record/525642 |
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| Gittenberger, A.; Rensing, M.; Stegenga, H.; Hoeksema, B.W.. |
| Bij een inventarisatie van hard substraat in 83 locaties in de Nederlandse Waddenzee, in zoutgehaltes van 10-32 ppt, werden in juli/augustus 2009 in totaal 129 soorten planten en dieren waargenomen. Van deze soorten hadden er 29 een uitheemse of onbekende oorsprong. In aanvulling hierop werd een inventarisatie gemaakt van nog ongepubliceerde waarnemingen in de Waddenzee. Elf soorten en één ondersoort waren nog niet eerder geregistreerd in de Nederlandse Waddenzee. Eén alg, Ceramiaceae sp., met onbekende oorsprong, is vermoedelijk een nieuwe soort voor Europa. Eén zakpijpsoort, Molgula socialis, is nieuw voor Nederland. Deze soort is waarschijnlijk algemeen verspreid in Nederland en is mogelijk zelf inheems. In het verleden was hij vermoedelijk vaak... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Marine algae; Macrofauna; Nederland; Waddenzee; Hard substraat; 42.75. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/441406 |
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| Stegenga, H.; Kemperman, Th.C.M.. |
| Zonariophila semiendophytica is described as a new genus and species from the coast of the East Cape, South Africa. It is characterized by a single large elongate basal cell immersed in the thallus of Zonaria subarticulata (Lamour.) Papenf.; this laterally compressed cell gives rise, on both edges, to several short (up to 2.5 mm), uncorticated, erect, sparingly branched filaments. The position and structure of the procarp (the subapical cell in a determinate female fertile filament bears two sterile pericentral cells and one fertile pericentral cell, the latter with one sterile cell and a four-celled carpogonial filament), and the development of a single involucral filament from the hypogenous cell, put this genus in the immediate vicinity of... |
| Tipo: Article / Letter to the editor |
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| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/524502 |
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| Stegenga, H.; Vroman, M.. |
| Twenty-five species of the red algal family Ceramiaceae are reported from the exposed northeast coast of the Caribbean island of Curaçao. Some of the more interesting finds are discussed in some detail, and one species, Spermothamnion antillarum, is described as new to science. Twelve species are recorded from the island for the first time. A survey of all Ceramiaceae ever recorded from Curaçao yields a total of 60 species, an uncommonly high number for any Caribbean region. Explanations for this high number may be found in the large variety of habitats and the relatively intense study the marine environment has undergone on this island. |
| Tipo: Article / Letter to the editor |
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| Ano: 1987 |
URL: http://www.repository.naturalis.nl/record/524970 |
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| Registros recuperados: 11 | |
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