Black Sea Phytoplankton checklist

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Achnanthes lyrata

From Black Sea Phytoplankton checklist

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<div class="discussion">Species discription available at  [[{{TALKPAGENAME}}|Discussion]]</div>
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Revision as of 04:32, 11 August 2011

Species discription available at Discussion


Achnanthes lyrata Proshkina-Lavrenko



Classification

Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Achnanthales (Order) > Achnanthaceae (Family) > Achnanthes (Genus)

Properties

Habitat: benthic

Descriptio. Valvae elliptico-lanceolatae, extremitatibus late rostellatis, 33.8—35.6 µ longae, 21.5—22.7 µ latae. Valva superior area axili anguste lineari, medio striis radialibus grandibus levibus 10—11 in 10µ, extremitatibus 14—17 in 10 µ donatae. Valva interior area axili lineari, area media transversaliter dilatata, bifurcata. Striae radiales, tenere punctulatae, valvae medio 14—16, in extremitatibus 18-20 in 10 µ.

Habitatio. Mare Nigrum ad insulam Tendra 7 m alt. inter algas, Junio, raro.

Typus in diatomotheca Sectionis cryptogamicae Inst. Bot. Acad. Sci. URSS in Leningrad conservatur.

Observatio. Achnanthes lyrata ab omnibus speciebus cognitis generis valva interiore tigura lyritormi ornata dittert. Valva superior speciei fossilis periodi tertiariae e Ponto, Euxino[Ach.baldjikii (Bright.) CI.].


Occurrence

  References
Black Sea
Bulgaria
Geogria
Romania Petranu A., 1997; Boicenco L. Updated list from Bodeanu N., 1987-88
Russia
Turkey
Ukraine


Volume and surface area calculation

Shape
Simple shape
K(flattening factor)
More accurate shape -

Hillebrand et al., 1999 - elliptic prism
(in species which are genuflexed in girdle view, the apical axis can be calculated more precisely, if the length of the two straight parts is summed; - species with a rhombic valve view should be calculated as prisms on a parallelogram; - species with a linear valve view should be calculated as boxes; - some species have great capitate poles, these can be added as cylinders. In this case, the apical axis means the apical length without the capitae)
 (Hillebrand, H., Dürselen, C. D., Kirschtel, D., Pollingher, D. and Zohary, T. (1999) Biovolume calculation for pelagic and benthic microalgae. J. Phycol., 35, 403–424)



Appearance in checklists

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List based on literature analysis
List extracted from database
List extracted from published paper, which is based on monitoring(scientific) research of scientist(s) and includes analysis of real collected data
Personal list, based on monitoring(scientific research) of scientist (not published as article)
Identification book

Last revision on 20-05-2013

Personal tools

The Commission on the Protection of the Black Sea Against Pollution
http://www.blacksea-commission.org/


Partly supported by OceanUkraine project

OCEAN-UKRAINE is a project Supported by the Flemish Government - Department of Foreign Affairs



Black sea SCENE project