The central sternum is very narrow and may not be distinguishable. The striae are slightly off-set from one another at the central sternum. acaroides synonym: UKSI Classification unranked Biota kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Fragilariales family Fragilariaceae genus Asterionella species Asterionella formosa variety Asterionella formosa var. EMBED = percent of the stream substrate that is embedded by sand and fine sediment A rimoportula may be present at either pole, at both poles, or even more than one rimoportula at a pole (Körner 1969, Round et al. This increase has been interpreted as a response to atmospheric nutrient enrichment (Saros et al. acaroides (Lemmermann) Cleve-Euler, 1953 Asterionella gracillima var. Studies of the seasonality of A. formosa date to the classic works of Lund (1950) in Windemere. The hypotheca is slightly smaller than the epitheca. Direct Children: Variety: Asterionella formosa var. Valves are long and narrow, with capitate apices. A. formosa is infected by three well-described chytrid species, Rhizophydium planktonicum Canter emend., Zygorhizidium planktonicum Canter, and Zygorhizidium affluens Canter. Valves are elongate, narrow, with capitate apices. log_PTL = log concentration of total phosphorus (µg/L) 101: 21–30. Asterionella formosa. A. glacialis The striae are slightly off-set from one another at the central sternum. STRAHLER = distribution plot of the Strahler Stream Order SLOPE = stream reach gradient (degrees) order Fragilariales family Fragilariaceae genus ... Asterionella formosa Name Synonyms Asterionella gracillima var. #V24R11 1. Seven Asterionella formosa genotypes were isolated from a single water sample taken with a 5L Uwitec water sampler during an Asterionella spring bloom in January 2008 at 5m depth in Lake Maarsseveen. acaroides (Lemmermann) Meister, 1912 Homonyms Asterionella formosa var. and Cyclotella meneghiniana Kutz. 1990). These web pages are currently under construction and expansion. Contributor. However, th… In naming species, a heterotypic synonym is one that comes into being when a taxon becomes part of a different taxon. log_NO3 = log concentration of nitrate (µeq/L) Diatoms respond, even to relatively low loads of anthropogenic reactive nitrogen, in low nutrient lakes. W1_HALL = an index that is a measure of streamside (riparian) human activity that ranges from 0 - 10, with a value of 0 indicating of minimal disturbance to a value of 10 indicating severe disturbance. Taxonomy - Asterionella (GENUS) ))) Map to UniProtKB (188) Unreviewed (188) TrEMBL. Therefore one daughter cell is always smaller than the original cell. 9.7.3 Biodiversity. The central sternum is very narrow and may not be distinguishable. https://en.wikipedia.org/w/index.php?title=Asterionella&oldid=994331726, Creative Commons Attribution-ShareAlike License, This page was last edited on 15 December 2020, at 04:21. Order. A. japonica Asterionella formosa. Although A. formosa is common in mesotrophic and eutrophic lakes globally, it has been increasing in presence and abundance in oligotrophic alpine lakes. 1990). 2010) and to a lesser extent in shallow lakes of the Tetons (Spaulding et al. acaroides Lemm. Variety: Asterionella formosa var. [2][3] If a chytrid attaches to an Asterionella cell, they can, however, protect others of their kind by committing apoptosis, or cellular suicide, stopping the spread of the parasite. The average size of an Asterionella colony is between 60 and 80 micrometers long, with each arm being 2-4 micrometers wide. doi:10.3955/046.088.0306. Asterionella fibula (Breb., 1849) Hustedt, 1952 Species: Asterionella formosa Hass. Algae Details UTEX Number: FD480 Class: Bacillariophyceae Strain: Asterionella formosa Medium: Ag Diatom Medium (Ag) Origin: Description of Location: GPS: Type Culture: No Collection: Isolation: D. Czarnecki (5/16/04) Isolator Number: L1880 Deposition: D. … A. formosa is better able to grow at low PO4‐P concentrations than C. meneghiniana, as shown by its lower K for PO4‐P limited growth. A single rimoportula is present at the footpole. Asterionella formosa. Explanation of each environmental variable and units are as follows: ELEVATION = stream reach elevation (meters) [ About COPEPEDIA] Correlation and multiple regression analyses revealed associations between plankton and chemical variables. However, there may also be other ways to rejuvenate.[1]. 2014). Information on the nutrient kinetics of Asterionella formosa Hass. Asterionella is a genus of a diatom. Order: Fragilariales Silva Family: Fragilariaceae Greville Genus: Asterionella Hassall Species: Asterionella formosa Hass. Species: Asterionella gracilis Species: Asterionella gracillima (Hantzsch) Heib. Maier, Michelle A.; Peterson, Tawnya D. (Oct 2014). 2010). 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