September 14th 2007

(Number 1)

A.E. Bailey-Watts, A. Kirika & H. Håkansson - The effects of factorial nutrient enrichments on a planktonic unicellular centrales-dominated assemblage: clues to the factors controlling biomass in Loch Leven late winter-early Spring in 1981 (pp. 1-15);  K. Clarke - Pelagodictyon, a new genus of centric diatom from the Norfolk Broads (pp. 17-26); R.M. Crawford, C. Gardner & L.K. Medlin - The genus Attheya. I. A description of four new taxa, and the transfer of Gonioceros septentrionalis and G. armatas (pp. 27-51);  C. Gardner & R.M. Crawford - A description of Plagiogrammopsis mediaequatus Gardner & Crawford, sp. nov. (Cymatosiraceae, Bacillariophyta) using light and electron microscopy (pp. 53-63);  H. Håkansson & B. Meyer - A comparative study of species in the Stephanodiscus niagarae-complex and a description of S. heterostylus sp. nov. (pp. 65-85);  I. Kaczmarska & G.A.Fryxell - The genus Nitzschia: three new species from the Equatorial Pacific Ocean (pp. 87-98);  N. Maidana - Fossil diatoms from Salinas del Bebedero (pp. 99-119);  M. Maier - Die jahreszeitliche veränderung der kieselalgengemeinschaft in zwei geologisch unterschiedlichen fliebgewässern der Alpen und ihre verteilung auf verschiedenen substraten (Seasonal variation of diatom associations in two geologically contrasting mountain streams in the Alps and their distribution on different substrata) (pp. 121-131);  H. Mizuno - Sexual reproduction and auxospore formation in Achnanthes javanica f. subconstricta (pp. 133-141);  J. Pinckney, Y. Piceno & C.R. Lovell - Short-term changes in the vertical distribution of benthic microalgal biomass in intertidal muddy sediments (pp. 143-153);  F.E. Round & P.W. Basson - Protokeelia spinifera sp. nov., a benthic marine diatom from the Gulf Coast of Saudi Arabia (pp. 155-163);  P.A. Sims - Benetorus, Gladiopsis and related genera from the Cretaceous (pp. 165-187);  P. Snoeijs - Distribution of epiphytic diatom species composition, diversity and biomass on different macroalgal hosts along seasonal and salinity gradients in the Baltic Sea (pp. 189-211);  S.R. Stidolph - Observations and remarks on morphology and taxonomy of the diatom genera Gyrosigma Hassall and Pleurosigma W. Smith. IV. Gyrosigma fogedii sp. nov., and some diatoms similar to G. fasciola (Ehrenb.) Griffith & Henfrey (pp. 213-224);  J.-R. Yang, E.F. Stoermer & J.P. Kociolek - Aulacoseira dianchiensis sp. nov., a new fossil diatom from China (pp. 225-231);  R. Ross - Nomenclature for diatomists. Supplementary note on names for fossils (p. 233);  Obituary - John R. Carter 1908-1993 (pp. 235-236). 

(Number 2)

C. Cocquyt & D.H. Jewson - Cymbellonitzschia minima Hustedt (Bacillariophyceae), a light and electron microscopic study (pp. 239-247);  A. Estes & R.R. Dute - Valve abnormalities in diatom clones maintained in long-term culture (pp. 249-258);  R.J. Flower & H. Håkansson - Crateriportula gen. nov., a new genus with close affinities to the genus Stephanodiscus (pp. 259-264);  S.M. Franz & A.-M.M. Schmid - Cell-cycle and phenotypes of Biddulphiopsis titiana in culture (pp. 265-288);  H. Håkansson & H. Kling - Cyclotella agassizensis nov. sp. and its relationship to C. quillensis Bailey and other Prairie Cyclotella species (pp. 289-301);  P.B. Hamilton, M. Poulin, C. Prévost, M. Angell & S.A. Edlund - Americanarum Diatomarum Exsiccata: Fascicle II (CANA), voucher slides representing 34 lakes, ponds and streams from Ellesmere Island, Canadian High Arctic, North America (pp. 303-327);  J.T. Harper & D.J. Garbary - Host specificity of Podocystis adriatica on the red alga Heterosiphonia crispella from Senegal (pp. 329-333);  V. Merino, J. García, M. Hernández-Mariné & M. Fernández - Morphology and ultrastructure of Gomphoneis rhombica (Fricke) comb. nov. (pp. 335-347);  T.A. Nikiteeva & Y.V. Likhoshway - Cyclotella gracilis sp. nov. from Pleistocene material of Lake Baikal, Russia (pp. 349-353);  W. Scheffler - Cyclotella pseudocomensis nov. sp. (Bacillariophyceae) aus Nord-deutschen Seen (pp. 355-369);  A.-M.M. Schmid - Slit-scales in the auxospore scale case of Coscinodiscus granii: the rudiments of rimoportulae. (pp. 371-375);  H.J. Semina & G.A. Fryxell - Thalassiosira echinata Semina, a new diatom species from the Equatorial Pacific (pp. 377-85);  P.A. Sims - Skeletonemopsis, a new genus based on the fossil species of the genus Skeletonema Grev. (pp. 387-410);  K. Takahashi, R. Jordan & J. Priddle - The diatom genus Proboscia in subarctic waters (pp. 411-428);  E. Theriot & K. Serieyssol - Phylogenetic systematics as a guide to understanding features and potential morphological characters of the centric diatom family Thalassiosiraceae (pp. 429-450);  G.J.C. Underwood - Seasonal and spatial variation in epipelic diatom assemblages in the Severn Estuary (pp. 451-472);  G.J.C. Underwood & M.L. Yallop - Navicula pargemina sp. nov. - a small epipelic species from the Severn Estuary, U.K. (pp. 473-478);  S.R. Stidolph - Deposition of diatom holotypes (p. 479). Obituary - Maj-Britt Florin 1905-1993 (pp. 481-484).�

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