Phycologia 

About: Phycologia is an academic journal published by Taylor & Francis. The journal publishes majorly in the area(s): Genus & Algae. It has an ISSN identifier of 0031-8884. Over the lifetime, 3317 publications have been published receiving 88209 citations.

A review of harmful algal blooms and their apparent global increase

Abstract: 1. NEILSON A.H. & LEWIN R.A. 1974. The uptake and uti­ lization of organic carbon by algae: an essay in compar­ ative biochemistry (including the addenda by N.J. Antia). Phycologia 13: 227-264. 2. PROCfOR V.W. 1975. The nature of charophyte species. Phycologia 14: 97-113. 3. HOEK C. VAN DEN 1975. Phytogeographic provinces along the coasts of the northern Atlantic Ocean. Phycologia 14: 317-330. 4. JO HANSEN H. W. 1976. Current status of generic concepts in coralline algae (Rhodophyta). Phycologia 15: 221-244. 5. W YNNE M.J. & LoISEAUX S. 1976. Recent advances in life history studies of the Phaeophyta. Phycologia 15: 435452. 6. STARKS T.L., SHUBERT L.E. & T RAINOR F.R. 1981. Ecol­ ogy of soil algae: a review. Phycologia 20: 65-80. 7. MOESTRUP 0. 1982. Flagellar structure in algae. A review with observations particularly on the Chrysophyceae, Phaeophyceae (Fucophyceae), Euglenophyceae and Reck­ ertia. Phycologia 21: 427-528. 8. WOELKERLING WM J. 1983. The Audouinella (Acrochae­ tium-Rhodochorton) complex (Rhodophyta): present per­ spectives. Phycologia 22: 59-92. 9. STEIN J.R. & BORDEN c.A. 1984. Causative and beneficial algae in human disease conditions: a review. Phycologia 23: 485-50 1. 10. HOSHAW R. W. & MCCOURT R.M. 1988. The Zygnema­ taceae (Chlorophyta): a twenty-year update of research. Phycologia 27: 511-548. II. ANTIA N.J., H ARRI SON P.J. & OLIVEIRA L. 1991. The role of dissolved organic nitrogen in phytoplankton nutrition, cell biology and ecology. Phycologia 30: 1-89. 12. KAPRAUN D.F. 1993. Karyology of marine green algae. Phycologia 32: 1-21.

Stichochrysis immobilis is a diatom, not a chrysophyte

Abstract: Stichochrysis immobilis E. Pringsheim was described as a new genus and species of the Chrysophyceae (Pringsheim 1955) on the basis of a pure culture grown on agar. There is now con­ vincing evidence that the organism in culture was in fact a clone of the diatom Cyclotella meneghiniana Kiitzing. The clone upon which Stichochrysis immobilis is based was isolated by Dr Jack Myers from plates of agar enriched with Chu # 1 0 medium (Chu 1942), a freshwater medium lacking added vitamins. The sample from which the isolation was made was collected in February 1949 from a waste-water clar­ ification pond receiving discharge from the city of Alamo, Texas. The water, for which no chemical data were given, was golden-brown in colour because of a dense algal population. The cells of this clone at first appeared square, but later became more rectangular. An axenic culture on agar was furnished to Dr Pringsheim in June 1949. The organism was described (Pringsheim 1955) as consisting of cylindrical cells, mostly twice as long as broad, 7-10 J.Lm in length and 5 J.Lm in diameter, forming chains under certain circumstances. It was considered to represent an undescribed genus and was assigned to the Chrysophyceae on the basis of colour and storage products as deduced by Pringsheim from light microscope examination. Pringsheim's culture from Myers, considered to be the type clone, was deposited with CCAP (Cambridge, UK) as clone number 956/1. Some difficulties with the taxonomy of the genus developed fairly quickly. In 1957, one of us (RRLG) isolated (from agar) several strains of small euryhaline mi­ croalgae from brackish ponds and coastal waters near Milford, Connecticut (USA). These algae grew in chains and were first thought to be clones of Stichochrysis. Drawings of the 'Milford clones' were remarkably like Pringsheim's figures (Pringsheim 1955, figs I-I to 1-8) except that cells or chains were often narrower. However, suspicion was aroused by observations of rows of small 'protuberances' on chains of liquid-grown cells supplied with high levels of silicon. That nominally unicellular

The species concept in diatoms

Abstract: Diatoms are the most species-rich group of algae. They are ecologically widespread and have global significance in the carbon and silicon cycles, and are used increasingly in ecological monitoring, paleoecological reconstruction, and stratigraphic correlation. Despite this, the species taxonomy of diatoms is messy and lacks a satisfactory practical or conceptual basis, hindering further advances in all aspects of diatom biology. Several model systems have provided valuable insights into the nature of diatom species. A consilience of evidence (the ‘Waltonian species concept’) from morphology, genetic data, mating systems, physiology, ecology, and crossing behavior suggests that species boundaries have traditionally been drawn too broadly; many species probably contain several reproductively isolated entities that are worth taxonomic recognition at species level. Phenotypic plasticity, although present, is not a serious problem for diatom taxonomy. However, although good data are now available for ...